Abstract

The invention relates to a control member (13) for controlling a movable electrode of a vacuum interrupter, the control member (13) comprising: - a winding (21) comprising at least one first winding layer (211) of a conductor wound around an axial direction; - at least one rigid spacer (31) arranged radially on the periphery of the first winding layer (211) and extending substantially over the entire thickness of the winding (21); - a matrix (4) made of dielectric material engaged with a lateral surface (311) of the spacer (31), with the periphery (213) of the first layer (211), and with a first axial end (215) of the first layer, wherein the second axial end (216) of the first layer (211) is at least partially free.

IPC Classes  ?

• H01H 33/666 - Operating arrangements
• H01F 7/128 - Encapsulating, encasing or sealing
• H01H 49/00 - Apparatus or processes specially adapted to the manufacture of relays or parts thereof
• H01F 7/16 - Rectilinearly-movable armatures
• H01H 50/44 - Magnetic coils or windings
• H01H 50/16 - Magnetic circuit arrangements

Abstract

The invention relates to a device (20) for actuating a current cut-off or disconnect system (10), which device comprises an actuating shaft (22) translatably movable along a main axis between a closed position and an open position; a locking device (30) comprising at least one first locking finger (31, 31') translatably movable along a first movement axis (Y1) and having a bevelled end portion (51) defining at least a first inclined planar surface (52, 52'), the normal (n1) whereof extends in a plane (P) parallel to the first movement axis and to the main axis, said first inclined planar surface being oriented towards a first end part or a second end part of the actuation shaft; and a first cam (60) mounted fixedly relative to the actuation shaft and having a peripheral part (66) in which at least a first ramp (74) parallel to the first inclined planar surface is formed, the locking device being able to take at least one locking configuration in which the first locking finger is pushed towards the first cam such that the first inclined planar surface cooperates, by planar contact, with the first ramp in order to keep the actuation shaft in the closed position or in the open position.

IPC Classes  ?

• H01H 3/20 - Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
• H01H 50/32 - Latching movable parts mechanically
• H01H 51/12 - Armature is movable between two limit positions of rest and is moved in both directions due to the energisation of one or the other of two electromagnets without the storage of energy to effect the return movement
• H01H 33/666 - Operating arrangements
• H01H 3/50 - Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring
• H01F 7/124 - Guiding or setting position of armatures, e.g. retaining armatures in their end position by mechanical latch, e.g. detent

Abstract

The invention relates to a sub-module (101) of an MMC converter comprising a first switching unit and a second switching unit (1, 2) each comprising a diode (D1, D2), an IGCT (S1, S2), a first connector (10) connected to a first pole (11) of the diode and a first pole (12) of the IGCT, and a second connector (13) connected to a second pole (14) of the diode and a second pole (32) of the IGCT, wherein the IGCT is arranged in a pressure contact housing, wherein at least one of the diodes is arranged in a plastic module housing, and wherein a first capacitor and a second capacitor (C1, C2) are placed between the first and second terminals and arranged symmetrically relative to one another on either side of the diodes and the IGCTs.

IPC Classes  ?

• H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

The invention relates to a modular multilevel voltage converter (10) comprising three arms (a, b, c), each comprising an upper half-arm and a lower half-arm, wherein each half-arm comprises a chain of individually controllable submodules of formula (I), and wherein the converter further comprises a control unit (30) comprising at least one AC control module (40), a DC control module (52), and a modulation member (58) that is configured to deliver modulation signal setpoints for controlling the control members of the submodules of the upper and lower half-arms, wherein the modulation signal setpoints are delivered on the basis of voltages across the terminals of the capacitors of the submodules of the upper and lower half-arms and on the basis of modulation voltage setpoints applied to the upper and lower half-arms, and wherein the modulation voltage setpoints depend on a modulation voltage alternating component setpoint delivered by the AC control module, a modulation voltage common-mode component setpoint delivered by the DC control module, and a modulation voltage homopolar common-mode component setpoint, which depends on the voltages across the terminals of the capacitors of the submodules of the upper and lower half-arms.

IPC Classes  ?

• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

The invention relates to a switching device (1) for a high-voltage DC electric current, the device comprising: - a main circuit (16); - a switch module (18) comprising the following branches connected in parallel: - a main branch (24) including a main switching unit (26); - a switch branch (32) comprising a plurality of switch modules (34) in series, wherein each of the switch modules comprises: - a switch capacitor (38) for the flow of current through the switch branch (32); - a switch (41, 42) in series with the switch capacitor (38); - a loop formed by the main branch (24) and the switch branch (32); - a control system (561) for closing the switch and discharging the switch capacitor (38) into the loop; - wherein the switch module (18) comprises a surge suppressor (30) for conduction when the main branch and the switch branch are open.

IPC Classes  ?

• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle

Abstract

The invention relates to a power transfer system (1) comprising a first branch (4) including a controlled switch (41) and a second branch (8) including a variable-frequency converter (5) connected in parallel between an AC network (2) and an electric machine (3); - the variable frequency converter (5) comprises: - a first AC interface connected to the first connection interface (61); - a second AC interface (191, 192, 193) connected to the second connection interface (62); - a third DC interface (171, 172, 173, 181, 182, 183); - the variable-frequency converter (5) being configured to perform either an AC-to-AC conversion between the first and second AC interfaces in a first mode or to perform an AC-to-DC conversion between the first AC interface and the third DC interface in a second mode; - an energy storage system (14) connected to the third DC interface.

IPC Classes  ?

• H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

The solution proposed by the invention is a multilayer coil for an electrical transformer suitable for the use of insulating fluids which are less polluting than conventional insulating fluids. The coil (1) according to the invention is characterized in that the first overhang length (L1i), and/or the second overhang length (L2i), of at least one electrically insulating layer (12i) is greater than the first overhang length (L1j), and/or respectively the second overhang length (L2j), of at least one further electrically insulating layer (12j).

IPC Classes  ?

• H01F 5/02 - Coils wound on non-magnetic supports, e.g. formers
• H01F 27/32 - Insulating of coils, windings, or parts thereof

Abstract

The invention relates to an electrical system (10) comprising three electrical converters (32, 34, 36) connected in series with respect to one another, by their DC terminals, between first and second DC terminals and an electrical power transformation device (40) comprising first, second and third primary windings (42a, 44a, 46a) connected to AC terminals of the electrical converters, the first electrical converter (32) comprising an electrical converter element (60) connected in cascade with a voltage level matching stage (50), the electrical system being capable of adopting a first operating mode in which the electrical converter element is configured to output an AC voltage from a DC voltage supplied by the voltage level matching stage and a second operating mode in which the voltage level matching stage is configured to output a DC voltage lower than a DC voltage supplied by the electrical converter element.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• H02M 7/797 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/53 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal

Abstract

The invention relates to infrastructure (1) for connecting offshore wind turbines (11, 12, 13, 14, 15, 16) to an electrical substation (10), the infrastructure comprising: - a first offshore wind turbine (13); - a first underwater electrical cable (23) having a first end connected to the first offshore wind turbine (13) and a second end positioned on the seabed (9); - second and third electrical cables (323, 334) having ends positioned on the seabed (9); - a first interconnection element (43), comprising a power output interface (437) connected to the second electrical cable (323), a power input interface (438) connected to the third electrical cable (334), a power input interface (436) connected to the second end of the first electrical cable (23), the first underwater interconnection element (43) comprising a first switch (431) configured to selectively connect and disconnect the first electrical cable (23).

IPC Classes  ?

• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• F03D 13/25 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors specially adapted for offshore installation

Abstract

T121221122) cancel each other out.

IPC Classes  ?

• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
• G01R 19/32 - Compensating for temperature change

Abstract

A conversion module (10) comprising a switch (14), a local control device (16) configured to control the opening or closing of the switch, an electrical energy recovery circuit (18) comprising a transformer (20) including a primary winding (20a) having a number of turns greater than the number of turns of a secondary winding, the primary winding being connected in a primary loop (22), in series with a decoupling capacitor (24), the electrical energy recovery circuit comprising an electrical energy storage device (28) connected in a secondary loop (30) and being configured to store electrical energy and to output at least part of this electrical energy to the local control device.

IPC Classes  ?

• H02M 1/00 - Details of apparatus for conversion
• H02M 1/096 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the power supply of the control circuit being connected in parallel to the main switching element
• H02M 7/155 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
• H02M 7/162 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/219 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration

Abstract

The invention relates to a method for controlling an electrical transmission connection (30) between first and second AC voltage buses (411, 421) that are connected respectively to first and second alternating voltage zones (1, 2) of an electrical transmission system, the electrical transmission connection (30) comprising at least one high-voltage direct current line (31), a first AC/DC converter (311) and a second AC/DC converter (321), the first and second AC voltage buses (411, 421) being interconnected by an AC system (32, 33, 34), the method comprising: - while the first and second first AC/DC converters (311, 321) operate to exchange power on the DC line (31) at a constant power set-point Phvdcref, detecting the switching off of a safety circuit breaker (514, 516, 524, 526) located in one of the first AC voltage zone (1) and the second AC voltage zone (2); - transferring additional power to said DC line (31) to compensate for said switching off.

IPC Classes  ?

• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• H02J 3/24 - Arrangements for preventing or reducing oscillations of power in networks
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link

Abstract

afaff Δω1 < (ω1 − ω2) < Δω.

IPC Classes  ?

• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• H02J 3/24 - Arrangements for preventing or reducing oscillations of power in networks
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• H02M 7/72 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
• H02M 5/44 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC

Abstract

The invention relates to a device (10) for disconnecting a high-voltage direct electric current by way of a fuse (26) interposed in a main branch (24), with: - an overload system (30) able to generate an oscillating overload current that is added, in the main branch (24), over the course of at least one oscillation half-period, to a fault current in terms of absolute value to ensure the melting of the fuse (26). The invention also relates to a method for disconnecting a high-voltage direct electric current by way of a fuse (26) interposed in a main branch (24), comprising:- storing electrical energy in an overload system (30);- generating, by way of the overload system (30), an oscillating overload current that is added, in the main branch (24), over the course of at least one oscillation half-period, to the fault current in terms of absolute value to ensure the melting of the fuse (26).

IPC Classes  ?

• H02H 3/02 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection Details
• H01H 9/54 - Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
• H02H 3/08 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current

Abstract

The invention relates to a voltage converter (10, 10') having first (12), second (14), third (16) and fourth (18) DC terminals and at least one arm (20, 30, 40) comprising exactly three electrical conversion modules (22, 32, 42, 24, 34, 44, 26, 36, 46), each comprising a chain of controllable submodules (SM) capable of assuming at least a first state in which a capacitor is inserted into the chain of submodules, the converter further comprising a first filter module (50) electrically connected between an intermediate point of the arm and said third DC terminal, and a second filter module (54) electrically connected between a second intermediate point of the arm and said second DC terminal.

IPC Classes  ?

• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

A cutoff device for high-DC-voltage electric current. The invention proposes a high-DC-voltage cutoff device comprising at least one cutoff module (18), comprising: • a main cutoff device (26) in a main branch (24), • a general overvoltage arrester (30) in an absorption branch (28), • a switching branch (32), with at least one switching capacitor (C1), characterized by: - a first plasma-tube switch (34.1) in the switching branch (32), - a pre-charging circuit (48.1) for pre-charging the switching capacitor (C1), - a switching overvoltage arrester (80.1), in parallel with the switching capacitor (C1), and having a protection voltage lower than a nominal service voltage of the cutoff module, and by at least one driveable switch (58.1, 58a, 58b) that supplies power to the first plasma-tube switch (34.1) by way of a voltage derived from a voltage between the armatures (C1p, C1d) of the switching capacitor (C1).

IPC Classes  ?

• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle

Abstract

The invention relates to a method for controlling an AC-to-DC converter (21) connected on one side to an AC network (41) and on the other side to a multi-point DC high-voltage network (10), comprising the steps of: - identifying an electrical power setpoint (P210) received from an external device, and identifying the operating point (P10) of the converter; - depending on the identified operating point (P10), setting respective corrective power setpoint bounds (MDP11, MDP12, MDP13, NDP11, NDP12, NDP13) for at least two different electric parameters to be controlled; - generating corrective power setpoints (DP11, DP12) for said two electrical parameters of the converter (21), each included between said respective bounds; - applying an electrical power setpoint to the converter (P211) which is the sum of the identified electrical power setpoint (P210) and of the generated corrective setpoints (DP11, DP12).

IPC Classes  ?

• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/757 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only

Abstract

The invention relates to a method for configuring a high-voltage DC system, the system comprising a first main terminal (A) and a second main terminal (B), a first electrical conductor (1) which comprises a first terminal (1_1) and a second terminal (1_2) which is connected to the second main terminal (B), wherein the method consists in particular of introducing a second electrical conductor (2) which comprises a first terminal (2_1) and a second terminal (2_2) connected to the second main terminal (B), and introducing a power converter (PC) with three terminals (X, Y, Z), such that its first terminal is connected to the first main terminal (A), its second terminal (Y) is connected to the first connection terminal (1_1) of the first electrical conductor (1) and its third terminal is connected to the first connection terminal (2_1) of the second electrical conductor (2).

IPC Classes  ?

• H02J 1/10 - Parallel operation of dc sources
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link

Abstract

The invention relates to a method for controlling an energy production system (1), comprising: - a connecting link (6) provided with a connection (62) to an AC network (2); - a turbine system (3) comprising an electric machine (31) for delivering a nominal electrical power Pnom; - an energy storage system (14), comprising the following steps: - receipt of a first electrical power setpoint Ps0 and control of the turbine system (3) so as to deliver an electrical power Pt0 = Ps0; and - receipt of an electrical power setpoint Ps1, where ΔPs = Ps1 - Ps0 and |Δps| > Pnom*0.3; a) application of a hydraulic setpoint to the turbine system (3) so as to increase the delivered electrical power Pti thereof and prevent the storage system (14) from delivering electrical power (62); b) determination of the power Pea that the storage system (14) is able to supply; c) when Pti + Pea ≥ Ps1 - ε1, the storage system (14) delivers an electrical power Pe1 to satisfy the requirement Ps1 - ε1 ≤ Pe1 + Pti ≤ Ps1 + ε2.

IPC Classes  ?

• H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
• H02J 3/48 - Controlling the sharing of the in-phase component
• F03B 13/00 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates

Abstract

The invention relates to a breaking device (28) for a high-DC-voltage current including, in succession, an isolating switch (48), a first primary point (44.1) and a first breaking module (40.1), characterized in that the breaking device (28) includes, between the first primary point (44.1) and ground (52), a precharge circuit (50) that has a precharge capacitor (54, 54.1), a precharge resistor (56) and a precharge switch (58), and in that the breaking device has at least: - one charging configuration (C_CH) for allowing the precharge capacitor to be charged; and - one precharging configuration (C_PCH) for allowing the precharge capacitor (54, 54.1) to be discharged into a conductor (12). The invention also relates to a method for controlling such a device and a process for evaluating the integrity of an electrical conductor.

IPC Classes  ?

• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle
• H01H 33/666 - Operating arrangements

Abstract

The invention relates to a power transfer system (1), comprising a first branch (4) comprising a controlled switch (41) and a second branch (8) comprising a variable frequency converter (5), in parallel between an AC network (2) and a reversible pump-turbine (3), the variable frequency converter (5) comprising : -a first AC/DC converter (11) having a first DC interface, and -a second AC/DC converter (12) having a second DC interface, the first and second DC interfaces being connected by a DC link (13), -a control circuit (7) having a first mode wherein it simultaneously opens the switch (4) and it transfers electrical power until it reaches the same frequency on two AC interfaces (61, 62), and having a second mode wherein it closes the switch (4) of the first branch (41); -an energy storage system (14); -a switching system (15) for selectively connecting the energy storage system (14) to the DC link (13).

IPC Classes  ?

• H02J 3/08 - Synchronising of networks
• F03B 3/10 - Machines or engines of reaction typeParts or details peculiar thereto characterised by having means for functioning alternatively as pumps or turbines
• F03B 13/08 - Machine or engine aggregates in dams or the likeConduits therefor

Abstract

122) flowing in the second secondary winding are out of phase, the voltage converter comprising only two electrical conversion modules.

IPC Classes  ?

• H02M 7/483 - Converters with outputs that each can have more than two voltage levels
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/36 - Means for starting or stopping converters
• H02M 1/15 - Arrangements for reducing ripples from DC input or output using active elements

Abstract

The invention relates to an energy production system (1) comprising: - a hydraulic turbine system (3) having undesirable electrical power output setpoints and identified safe electrical power output setpoints; - an energy storage system (14); - a connection (6) connected to the energy storage system (14) and to an electric machine of the hydraulic turbine system (3), and connected to an AC power network (2); - a device for determining the state of charge (19); - a control circuit (18) controlling a transfer of electrical power between the connection (6) and the energy storage system (14), configured to receive an electrical power setpoint value Reps and configured to determine that this received electrical power setpoint value Reps belongs to the undesirable electrical power output setpoint values, to generate an electrical power transfer setpoint value Epts, and an actual electrical power output setpoint value Aepos belonging to the safe electrical power output setpoint values, satisfying the relationship Reps = Epts + Aepos.

IPC Classes  ?

• H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• F03B 13/08 - Machine or engine aggregates in dams or the likeConduits therefor
• F03B 3/10 - Machines or engines of reaction typeParts or details peculiar thereto characterised by having means for functioning alternatively as pumps or turbines
• H02J 15/00 - Systems for storing electric energy

Abstract

The invention relates to a method for insulating a first conductor (21) of a first continuous high voltage power drive line connected to at least one link node in question comprising at least three distinct links each associated with at least one cut-off device, characterised in that the method comprises, according to an item of information on the criticality of the fault relative to the link node in question: - either, for a targeted opening operation, moving the electrical cut-off device (28.11) from its closed state to its open state, while maintaining each of the second (28.12, 29.1b) and the third (28.13; 18.1; 29.1) electrical cut-off devices in their closed state; - or, to fully open the node in question, interrupting all the power flows in all of the links of the node.

IPC Classes  ?

• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link

Abstract

The invention relates to a voltage converter (10) comprising an upper module (24) including at least one first upper arm (62) connected between first and third DC terminals and comprising a plurality of electrical conversion devices (33) connected in series in said at least one first upper arm, a lower module (26) comprising at least one first lower arm (30) connected between the third and fourth DC terminals and including a plurality of electrical conversion devices (32) connected in series in said at least one first lower arm and an electrical power exchange device (28) interconnecting the upper module and the lower module, at least one of the upper and lower modules comprising at least three electrical conversion devices (32) connected in series in said at least one corresponding upper or lower arm.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

The invention relates to an induction-controlled switch having a vacuum bulb (1), comprising: - a vacuum chamber (110); - a first switch (111) comprising first and second electrodes (1113, 1111), the first switch (111) further comprising a first actuator (12) slidably mounted in a first direction (A) and rigidly attached to the first electrode (1113), the first actuator comprising a first armature (122); - a second actuator (22) comprising a second armature (222); - a first control member comprising a first coil (131) configured to simultaneously generate a switching current in the first armature and a current in the second armature via the first coil (131), so as to separate or bring into contact the first and second electrodes (1113, 1111) and so as to move the first and second actuators in opposite ways along the first direction.

IPC Classes  ?

• H01H 33/666 - Operating arrangements

Abstract

The invention relates to a method for monitoring a system (1) for transmitting electrical power for a network for transmitting DC electrical power. The method involves - determining, along a measurement segment (112C), a profile of a temperature parameter, - determining a theoretical leakage current between the grounding connections (109) of the measurement segment (112C), taking into account the temperature parameter profiles and the load current and voltage, - measuring the leakage current between the grounding connections (109) of the measurement segment (112C), - generating an alert if there is a difference between the theoretical and measured leakage current.

IPC Classes  ?

• G01R 31/52 - Testing for short-circuits, leakage current or ground faults
• G01R 31/08 - Locating faults in cables, transmission lines, or networks

Abstract

Conversion chain comprising a plurality of conversion modules (12) each comprising a main switch (16) which is connected in a main electrical line and which can take up at least one open position, in which it blocks the circulation of an electric current in the main electrical line, and a closed position, in which it allows the circulation of an electric current in the main electrical line; and a damping circuit (18) comprising a transformer (20) which has a main winding (12a,12a') and a secondary winding (12b,12b'), which is connected in series to a semi-conductive commutation element (26) which is configured to take up a blocked state, in which it prevents the circulation of a current in the damping circuit, and at least one passage state, in which it allows the circulation of an electric current in the damping circuit between the upper terminal and the lower terminal of the conversion module.

IPC Classes  ?

• H02M 1/34 - Snubber circuits
• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 7/219 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration

Abstract

The invention relates to a mechanical cut-off device (10) for a high-voltage electrical circuit (2), comprising: - in a main electrical path (2P), a main mechanical switch (DS1); - in a parallel secondary electrical path (2S), a secondary mechanical switch (DS2); - a mechanical control unit (24) configured such that the secondary mechanical switch (DS2) is brought into its mechanically open state after the main mechanical switch (DS1); characterised in that the device has a transition dipole (48) comprising a capacitor (49) arranged electrically in series in the secondary electrical path (2S), and a controlled switch (DS3) which, in an electrically closed state, creates a bypass inside the mechanical cut-off device which short-circuits the capacitor (49) of the transition dipole (48). The invention also relates to a facility and a method for breaking an electrical circuit using such a device.

IPC Classes  ?

• H01H 9/00 - Details of switching devices, not covered by groups
• H01H 9/38 - Auxiliary contacts on to which the arc is transferred from the main contacts
• H01H 9/42 - Impedances connected with contacts
• H01H 33/12 - Auxiliary contacts on to which the arc is transferred from the main contacts
• H01H 33/16 - Impedances connected with contacts
• H01H 9/54 - Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere

Abstract

Disclosed is a voltage converter (10) comprising at least one arm (24) extending between a first DC terminal (16) and a second DC terminal (28) and comprising at least one upper half-arm (24u) and one lower half-arm (24l) that are connected, each half-arm comprising a chain of submodules (30), the converter comprising a filtering module (34) and at least one circuit-breaker device (40) connected between a mid-point of the arm and the first DC terminal, the circuit-breaker device being able to assume an open position and a closed position, the circuit-breaker device being configured to open when the voltage across terminals of the upper half-arm of the at least one arm reaches the maximum voltage that can be generated by the chain of submodules of the upper half-arm.

IPC Classes  ?

• H02H 7/12 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers
• H02H 3/20 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess voltage
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

The invention relates to a Francis-type wheel (4) for a hydraulic machine (1) that is intended to have a flow of water pass through it, comprising: - a ceiling (41) fixed to a shaft (11) having an axis of rotation; - a belt (42); - multiple blades (43) distributed about said axis of rotation and connecting the ceiling (41) and the belt (42), each blade comprising an outer radial leading edge (431), wherein the following relationship holds for at least 40% of the flow threads between first and second blades: Di2/Di1 ≥ 0.4, where Di1 is the distance between the leading edges (431) of the first and second blades for a given thread, and Di2 is the distance between the first blade and the leading edge of the second blade for this same thread.

IPC Classes  ?

• F03B 3/12 - BladesBlade-carrying rotors

Abstract

The invention relates to a method for supervising an HVDC facility (10) comprising a plurality of systems (12, 14, 16) on each of which a plurality of characteristic quantities can be measured, the method comprising the steps according to which: the value of each characteristic quantity of the plurality of characteristic quantities of each system is measured; for each characteristic quantity, an operating region is determined from the measured value of said characteristic quantity, the operating region being chosen among a group of operating regions; and, an operating state of the facility is determined from the operating regions previously determined.

IPC Classes  ?

• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link

Abstract

The invention relates to a method for controlling an electrical transmission network comprising a plurality of DC high-voltage lines (320) and at least three AC/DC converters identified by a respective index i, the method comprising: - for each of the converters having index i, recovering the setpoint active power value Pdci applied thereto; - recovering the instantaneous voltage value Vi and voltage angle value θi of the buses having index i; - modifying the setpoint active power Pdci of each of the converters having index i by a value including a term ΔPdcsi as a function of a sum of deviations of voltage angles multiplied by contribution adjustment parameters.

IPC Classes  ?

• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers
• H02J 5/00 - Circuit arrangements for transfer of electric power between ac networks and dc networks

Abstract

iijij is a power reference exchanged between the bus having index i and the bus having index j via the electrical transmission network (1), and n is the number of converters connected to the AC voltage buses.

IPC Classes  ?

• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers
• H02J 5/00 - Circuit arrangements for transfer of electric power between ac networks and dc networks

Abstract

The invention concerns a multi-level voltage converter (2) for converting a DC voltage into an AC voltage, comprising: - an arm, comprising an upper half-arm and a lower half-arm (257), each including several sub-modules in series (51, 52, 53), each comprising a capacitive energy storage element (6) and a circuit (4) for selectively bypassing the capacitive element or connecting it in series with the other sub-modules of the half-arm; - an improved sub-module includes several electrical energy exchange devices (7), each comprising: -an electrical energy storage device (81); -a DC/DC converter (71) having a second interface (713, 714) connected to the terminals of the storage device (81), comprising a switching circuit (721, 722) for selectively controlling the discharging or recharging of the storage device (81) via the first interface, the switching circuit (721, 722) including switches having a switching frequency higher than 10 kHz.

IPC Classes  ?

• H02M 7/49 - Combination of the output voltage waveforms of a plurality of converters
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/483 - Converters with outputs that each can have more than two voltage levels
• H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
• H02M 1/00 - Details of apparatus for conversion

Abstract

12132312132312132323 ) and a fault impedance parameter, - measurement of voltage and/or currents evolution at least at one specific location in the said power system (100), - iterative simulation of the voltage and/or current evolution by the physical model at the measurement point with a set of fault parameters where at each step of iteration, simulated and measured voltage and/or current evolutions are compared and the set of fault parameters is adapted according to a convergence criterion, - identification of a fault with its fault parameters when convergence of the measured voltage and/or current evolutions and simulated voltage and/or current evolutions is reached in a limited number of iterations.

IPC Classes  ?

• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link

Abstract

The invention relates to a current cut-off device for high-voltage direct current, of the type comprising: - between a primary point and an intermediate point (13), a primary diversion component (18, 180), and, in parallel, a primary surge arrester (30); - a mechanical secondary switch (24), between the intermediate point (13) and the secondary point (14); - a main resonator (32), a terminal (32b) of which is connected to the secondary point (14); - a main oscillation switch; - a main surge arrester (31), parallel to a main capacitor (34) of the main resonator (32); characterised in that the main oscillation switch (36) comprises three terminals, respectively connected to the primary point (12), to the intermediate point (13) and to the other terminal (32a) of the main resonator (32); the switch being able to switch at least between three states: direct, inversion and isolated.

IPC Classes  ?

• H01H 9/54 - Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle

Abstract

The invention concerns an electrically insulating composite material (1) comprising a polyepoxide matrix (2) of cycloaliphatic or diglycidyl ether type in an amount of less than 40% by mass, from 20 to 75% by mass of one or more micrometric and/or mesometric fillers (3), and from 0.1 to 20% by mass of at least one ionic liquid (4), the masses being expressed relative to the total mass of the electrically insulating composite material (1). The invention also relates to a process for manufacturing such electrically insulating composite material (1), and also to the use thereof for an electrically insulating support (9) in a metal-enclosed substation (5).

IPC Classes  ?

• C08K 5/19 - Quaternary ammonium compounds
• C08K 5/5337 - Esters of phosphonic acids containing also halogens
• C08L 65/00 - Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chainCompositions of derivatives of such polymers
• H01B 3/40 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes epoxy resins
• H02K 3/30 - Windings characterised by the insulating material
• H02K 3/40 - Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges

Abstract

00 and of said number Ni, • A control unit (UC) configured to control the M on/off switches of said switching interface (ISW) with a view to connecting each terminal (A, B, C) of said device for controlling power flow to a separate terminal of the system and to correspond to an operating state of the network.

IPC Classes  ?

• H02J 3/06 - Controlling transfer of power between connected networksControlling sharing of load between connected networks
• H02J 1/08 - Three-wire systemsSystems having more than three wires
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link

Abstract

The invention relates to a current breaker device (10) for high-voltage direct current, comprising: - at least one primary mechanical switch (18) placed in a main line (16) between a primary point (12) and a secondary point (14); - a primary surge arrester (30) arranged parallel with said primary switch (18); and - an oscillatory circuit (40) arranged electrically parallel with the primary switch (18) and electrically parallel with the primary surge arrester (30), said oscillatory circuit (40) comprising, electrically in series, at least an inductor (42), a capacitor (44) and an oscillation trigger (46), characterised in that the device (10) comprises, in said oscillatory circuit (40), a controllable device (48, 48', 50, 50') for varying the resistance value of a resistor inserted in series into said oscillatory circuit.

IPC Classes  ?

• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle

Abstract

The invention relates to a high-voltage direct current breaker device, comprising: - a primary mechanical switch (18) and a secondary mechanical switch (24) placed successively between a primary point and a secondary point but either side of an intermediate point (13), - a primary surge arrester (30) arranged parallel with the primary switch, - a secondary surge arrester (32) arranged electrically parallel with the secondary switch, characterised in that the secondary surge arrester is arranged electrically between the intermediate point and the secondary point, and in that the device (10) comprises a capacitive buffer circuit (34) electrically parallel with the assembly formed by the primary switch and the secondary switch, and electrically parallel with the assembly formed by the primary surge arrester and the secondary surge arrester, wherein the capacitive buffer circuit comprises an activation switch (36) and a buffer capacitor (38).

IPC Classes  ?

• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle

Abstract

Method for modeling an electrical cable in order to use the electrical cable in a plurality of propagation modes associated with delays in the temporal domain, said method using a transfer matrix and comprising steps according to which a cable propagation mode is selected, an approximation is calculated of the transfer matrix in the form of a first rational function comprising approximation terms associated with each of the cable propagation modes which are different from the selected propagation mode, a residue matrix associated with the propagation mode is determined, an approximation of the residue matrix is calculated, said steps are repeated successively for each of the cable propagation modes, and an approximate transfer matrix is determined using the set of previously approximated residue matrices.

IPC Classes  ?

• G01R 27/32 - Measuring attenuation, gain, phase shift, or derived characteristics of electric four-pole networks, i.e. two-port networksMeasuring transient response in circuits having distributed constants

Abstract

The invention relates to a system having: a high-voltage electrical power module (1) comprising a dielectric housing (2) housing electronic components of said module, and further comprising at least first (101) and second (102) connection terminals which are accessible from outside the module and between which the electronic components of the module are capable of applying a potential difference at least equal to 1 kV, said first and second terminals being separated by at least one set of alternating grooves (6) and ribs (7) arranged in an outer face of the dielectric housing (2); and - a dielectric protective element (10) extending between the first and second connection terminals (101, 102), said protective element covering the ribs of the housing and comprising ribs (17) housed in grooves (6) o the housing.

IPC Classes  ?

• H01L 23/62 - Protection against overcurrent or overload, e.g. fuses, shunts
• H01L 23/04 - ContainersSeals characterised by the shape
• H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
• H05K 7/14 - Mounting supporting structure in casing or on frame or rack

Abstract

The invention relates to a multilevel modular voltage converter (2), including: - an upper half-arm (253) that is connected between the first pole (201) and an intermediate node (243), and a lower half-arm (257) that is connected between the second pole (202) and the intermediate node (243), each half-arm including a plurality of modules connected in series, and a circuit for selectively bypassing an electrical energy storage element or connecting it in series with the other modules of the half-arm; - the converter (2) comprises a controlled switch (27) that is connected between the intermediate node (243) and a ground connection; - a control circuit (28) is configured: - to identify an electrical isolation between the AC interface and an AC network and to close said controlled switch (27) - to control the modules of the lower half-arm (257) and the modules of the upper half-arm (253) so as to modify first and second applied potential difference values. |

IPC Classes  ?

• H02H 7/10 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers
• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred

Abstract

The invention relates to an on-board system and a method for converting medium-voltage electrical power for a movable transport vehicle (10), comprising a plurality of conversion blocks (38.i) each having an upstream AC-DC stage (34) and an isolated downstream DC-DC stage (36), of the type in which, for each conversion block (38.i), the isolated downstream DC-DC power conversion stage (36) comprises a primary DC-AC converter (36A) produced in the form of a full bridge of controlled electronic switches and a transformer (36B) having a primary winding (36B1), connected to the downstream side of the primary converter and a secondary winding; characterised in that, for each conversion block (38.i), the primary DC-AC converter (36A) comprises a capacitive circuit (56) electronically inserted between an intermediate point (54) of the primary winding of the transformer (36B) and one side (48, 50) of the full bridge of the primary DC-AC converter (36A).

IPC Classes  ?

• B60L 9/12 - Electric propulsion with power supply external to the vehicle using DC motors fed from AC supply lines with static converters
• B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• B60L 9/28 - Electric propulsion with power supply external to the vehicle using AC induction motors fed from AC supply lines polyphase motors
• H02M 1/14 - Arrangements for reducing ripples from DC input or output
• H02M 1/12 - Arrangements for reducing harmonics from AC input or output
• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

The invention relates to a composite electrical insulation material (1) comprising an epoxy matrix (2) of cycloaliphatic type or of diglycidyl ether type, and from 15 to 45% of fillers, including a first micrometric inorganic filler (3) having an aspect ratio of less than 3 and a lamellar second micrometric inorganic filler (4) in a volume ratio ranging from 95/05 to 40/60. The invention also relates to the process for manufacturing such a composite electrical insulation material (1), and also to the use thereof for electrically insulating supports (9) in a metal-enclosed substation (5).

IPC Classes  ?

• H01B 3/40 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes epoxy resins
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• H02K 3/40 - Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges
• C08K 3/22 - OxidesHydroxides of metals
• C08K 3/38 - Boron-containing compounds

Goods & Services

Software in the fields of transport, distribution, production, electricity use and energy storage; software packages in the fields of transport, distribution, production, electricity use and energy storage; software relating to electricity transport and distribution networks, means of electricity production, sites for electricity consumption and means of energy storage; software packages relating to electricity transport and distribution networks, means of electricity production, sites for electricity consumption and means of energy storage; software for study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to electricity transport and distribution networks, means of electricity production, sites for electricity consumption and means of energy storage; software packages for study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to electricity transport and distribution networks, means of electricity production, sites for electricity consumption and means of energy storage; software for comparison of technological solutions, principles of architecture or concepts (algorithms) for control and protection of electricity transport and distribution networks, means of electricity production, sites for electricity consumption and means of energy storage; software packages for comparison of technological solutions, principles of architecture or concepts (algorithms) for control and protection of electricity transport and distribution networks, means of electricity production, sites for electricity consumption and means of energy storage; software for study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to complex systems capable of aggregating networks for electricity transport, electricity distribution, means of electricity production, sites for electricity consumption and means of energy storage; software packages for study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to complex systems capable of aggregating networks for electricity transport, electricity distribution, means of electricity production, sites for electricity consumption and means of energy storage; software for comparison of technological solutions, architectural principles or concepts (algorithms) for control and protection of complex systems capable of aggregating networks for electricity transport, electricity distribution, means of electricity production, sites for electricity consumption and means of energy storage; software packages for comparison of technological solutions, architectural principles or concepts (algorithms) for control and protection of complex systems capable of aggregating networks for electricity transport, electricity distribution, means of electricity production, sites for electricity consumption and means of energy storage; software for study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to connection architectures for means of electricity production; software packages for study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to connection architectures for means of electricity production; software for comparison of technological solutions, architectural principles or concepts (algorithms) for control and protection of connection architectures for means of electricity production; software packages for comparison of technological solutions, principles of architecture or concepts (algorithms) for control and protection of connection architectures for means of electricity production; software for study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to high or medium voltage, alternating (AC) or direct (DC) current electricity distribution and transport systems; software packages for study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to high or medium voltage, alternating (AC) or direct (DC) current electricity distribution and transport networks; software for comparison of technological solutions, architectural principles or concepts (algorithms) for control and protection of high or medium voltage, alternating (AC) or direct (DC) current electricity distribution and transport networks; software packages for comparison of technological solutions, architectural principles or concepts (algorithms) for control and protection of high or medium voltage, alternating (AC) or direct (DC) current electricity distribution and transport networks. Software development (design), software editing, software installation, software maintenance, software update, software technical support and consulting, computer software rental, software as a service (Saas) and operation of software in the fields of transport, distribution, production, electricity consumption and energy storage; software development (design), software editing, software installation, software maintenance, software update, software technical support and consulting, computer software rental, software as a service (Saas) and operation of software in the field of electricity transport and distribution networks, means of electricity production, sites for electricity consumption and means of energy storage; software development (design), software editing, software installation, software maintenance, software update, software technical support and consulting, computer software rental, software as a service (Saas) and operation of software for the study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to electricity transport and distribution networks, means of electricity production, sites for electricity consumption and means of energy storage; software development (design), software editing, software installation, software maintenance, software update, software technical support and consulting, computer software rental, software as a service (Saas) and operation of software for comparison of technological solutions, architecture principles or concepts (algorithms) for control and protection of electricity transport and distribution networks, means of electricity production, sites for electricity consumption and means of energy storage; software development (design), software editing, software installation, software maintenance, software update, software technical support and consulting, computer software rental, software as a service (Saas) and operation of software for the study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to complex systems capable of aggregating networks for electricity transport, electricity distribution, means of electricity production, sites for electricity consumption and means of energy storage; software development (design), software editing, software installation, software maintenance, software update, software technical support and consulting, computer software rental, software as a service (Saas) and operation of software for comparison of technological solutions, architecture principles or concepts (algorithms) for control and protection of complex systems capable of aggregating networks for electricity transport, electricity distribution, means of electricity production, sites for electricity consumption and means of energy storage; software development (design), software editing, software installation, software maintenance, software update, software technical support and consulting, computer software rental, software as a service (Saas) and operation of software for the study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to connection architectures for means of electricity production; software development (design), software editing, software installation, maintenance with respect to software, software update, technical support and consulting with respect to software, computer software rental, software as a service (Saas) and operation of software for comparison of technological solutions, architecture principles or concepts (algorithms) for control and protection of connection architectures for means of electricity production; software development (design), software editing, software installation, maintenance with respect to software, software update, technical support and consulting with respect to software, computer software rental, software as a service (Saas) and operation of software for study, modelling, optimization, simulation, technical, economic and environmental analysis, risk analysis, decision support and asset management relating to high or medium voltage, alternating (AC) or direct (DC) current electricity distribution and transport networks; software development (design), software editing, software installation, maintenance with respect to software, software update, technical support and consulting with respect to software, computer software rental, software as a service (Saas) and operation of software for comparison of technological solutions, architecture principles or concepts (algorithms) for control and protection of high or medium voltage, alternating current (AC) or direct current (DC) electricity distribution and transport networks.

Abstract

The invention relates to a power flow control system intended to be used in a grid network, said system comprising a power flow control device, means for detecting an electrical fault within the device, means for identifying the type of electrical fault detected and means for protecting said power flow control device, said protection means comprising: - A bypass switch placed parallel to each diode in the power flow control device; - A bypass switch placed parallel to each switch in the power flow control device, unless the switch is a non-reversible controlled switch; - A voltage limitation device connected to the terminals of each passive voltage source.

IPC Classes  ?

• H02J 1/14 - Balancing the load in a network
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02H 7/28 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred for meshed systems
• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred

Abstract

The invention relates to a superconducting current limiter comprising at least one superconductor-type conductor (3) wound up to form a coil (2) extending in a single plane and connecting a first electrical connection terminal to a second electrical connection terminal, an electrically insulating spacer (8) being arranged between two turns of the coil. The superconductor-type conductor (3) consists of at least two separate superconducting cables (5) wound up in parallel, the ends of which are electrically connected respectively by the first electrical connection terminal and by the second electrical connection terminal. An electroconductive spacer (12) is arranged between two of said separate superconducting cables (5), said electroconductive spacer (12) being permeable to a cooling liquid.

IPC Classes  ?

• H01L 39/16 - Devices switchable between superconductive and normal states

Goods & Services

(1) Logiciels de calcul scientifique dans les domaines du transport, de la distribution, de la production, de la consommation d'électricité et du stockage d'énergie; suites de logiciels de calcul scientifique dans les domaines du transport, de la distribution, de la production, de la consommation d'électricité et du stockage d'énergie; logiciels de calcul scientifique relatifs aux réseaux de transport et de distribution d'électricité, aux moyens de production d'électricité, aux foyers de consommation d'électricité et aux moyens de stockage d'énergie; logiciels pour l'étude, la modélisation, l'optimisation, la simulation, l'analyse technique, économique et environnementale, l'analyse de risque, l'aide à la décision et la gestion des actifs relatives aux réseaux de transport et de distribution d'électricité, aux moyens de production d'électricité, aux foyers de consommation d'électricité et aux moyens de stockage d'énergie; suites de logiciels pour l'étude, la modélisation, l'optimisation, la simulation, l'analyse technique, économique et environnementale, l'analyse de risque, l'aide à la décision et la gestion des actifs relatives aux réseaux de transport et de distribution d'électricité, aux moyens de production d'électricité, aux foyers de consommation d'électricité et aux moyens de stockage d'énergie; logiciels de comparaison de solutions techniques relatives à l'architecture, au contrôle et à la protection de réseaux de transport et de distribution d'électricité, de moyens de production d'électricité, de foyers de consommation d'électricité et de moyens de stockage d'énergie; suites de logiciels de comparaison de solutions techniques relatives à l'architecture, au contrôle et à la protection de réseaux de transport et de distribution d'électricité, de moyens de production d'électricité, de foyers de consommation d'électricité et de moyens de stockage d'énergie. (1) Support technique nommément installation, maintenance et mise à jour de logiciels dans les domaines du transport, de la distribution, de la production, de la consommation d'électricité et du stockage d'énergie; logiciel-service (SaaS) dans les domaines du transport, de la distribution, de la production, de la consommation d'électricité et du stockage d'énergie.

Abstract

saa.

IPC Classes  ?

• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link

Abstract

The invention proposes an on-board conversion system for converting power for a movable transport vehicle (10), of the type: - suitable for being in contact with a fixed linear contact (14) - comprising a first electrical connection circuit (22) and a second electrical connection circuit (26) - comprising one or more conversion blocks (38.i) each having an upstream AC/DC power conversion stage (34) connected to the first connection circuit (22), characterised in that the on-board conversion system (16) comprises, for each conversion block (38.i), an isolated downstream DC/DC power conversion stage (36); and in that the second connection circuit (26) allows, in a configuration for DC voltage, one, more or all of the conversion blocks (38.i) to be connected at an intermediate connection (40.i, 42.i), between the upstream (34) and downstream stages (36), to the second fixed source of electrical voltage.

IPC Classes  ?

• B60L 9/30 - Electric propulsion with power supply external to the vehicle using AC induction motors fed from different kinds of power supply lines
• B60L 9/22 - Electric propulsion with power supply external to the vehicle using AC induction motors fed from DC supply lines polyphase motors
• B60L 9/28 - Electric propulsion with power supply external to the vehicle using AC induction motors fed from AC supply lines polyphase motors
• H02M 1/10 - Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from AC or DC
• H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02P 27/14 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation with three or more levels of voltage
• H02M 7/49 - Combination of the output voltage waveforms of a plurality of converters
• H02M 7/493 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
• H02M 1/00 - Details of apparatus for conversion

Abstract

critcritcrit.

IPC Classes  ?

• F03B 13/06 - Stations or aggregates of water-storage type
• F03B 15/08 - Regulating, i.e. acting automatically by speed, e.g. by measuring electric frequency or liquid flow

Abstract

The invention concerns a conversion station (4) comprising: - a connection interface (460) to an AC grid (91); - a connection interface to a DC grid comprising first and second poles (441, 442); - an AC/DC converter (42); - for each of the phases: - the AC/DC converter (42) connected between the first and second poles in symmetrical monopole mode, an intermediate node being connected to the connection interface (460) to the three-phase AC grid; - a voltage balancing circuit (41) of the first and second poles, including a controlled switch (411) and an inductance (412) connected in series between ground and the intermediate node (40); - a control device (43) for detecting an electrical fault, and for controlling the closing of said controlled switches when an electric fault is detected.

IPC Classes  ?

• H02H 3/06 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection Details with automatic reconnection
• H02H 3/16 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to fault current to earth, frame or mass
• H02H 7/125 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for rectifiers
• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred

Abstract

A superconducting current limiting dipole (L6) comprising a superconducting conductor (F6) wound to form a two-wire coil extending in a single plane, an insulating layer (E1 to E11, H1) being disposed between two turns of said coil. The superconducting conductor (C1 to C6) is made up of at least four separate superconducting cables (C1 to C6) wound in parallel and arranged in at least two pairs, each of the pairs being formed of two of the said superconducting cables (C1 to C6) which are electrically connected together in a first connection area, and, in a second connection area, one of the superconducting cables of a pair is electrically connected to one of the superconducting cables of the other pair, the other superconducting cable of each pair being connected to an electrical connection terminal (T1, T2) or to an additional pair.

IPC Classes  ?

• H01F 6/06 - Coils, e.g. winding, insulating, terminating or casing arrangements therefor
• H01F 27/28 - CoilsWindingsConductive connections
• H01F 27/32 - Insulating of coils, windings, or parts thereof
• H01L 39/16 - Devices switchable between superconductive and normal states

Abstract

The present invention relates to a device (1) for measuring a magnetic field (B) and/or an electric field (E) comprising: - a measurement cell (3) enclosing a gas that is sensitive to the Zeeman effect and/or to the Stark effect, a polarised light source (7) the wavelength of which is tuned to an absorption line of the gas that is sensitive to the Zeeman effect and/or to the Stark effect, - at least one polarimetry system (11) configured to measure a first parameter corresponding to the rotation by a polarisation angle caused by the passage of the beam (9) through the measurement cell (3) enclosing a gas that is sensitive to the Zeeman effect and/or to the Stark effect, - a system (13) for measuring absorption, configured to measure a second parameter corresponding to the absorption of the beam (9) by the gas that is sensitive to the Zeeman effect and/or to the Stark effect in the measurement cell (3), and a processing unit (15) configured to combine the measurement of the first parameter corresponding to the rotation by the polarisation angle and the absorption measurement in order to extract therefrom a third and/or fourth parameter corresponding respectively to an electric field (E) and/or a magnetic field (B) to be measured.

IPC Classes  ?

• G01R 15/24 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
• G01R 33/032 - Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday

Abstract

The invention relates to a device for controlling a terminal (100, 200, 300) connected in a multi-terminal, high-voltage DC transmission facility, the terminal being able to supply power to the direct current part (16) of the facility or draw power therefrom, between an upper power limit and a lower power limit, the device also comprising at least one regulation module (20) designed to vary the power supplied to the direct current part of the facility, or drawn therefrom, by means of the terminal, according to a voltage variation on the direct current part of the facility, and the device further comprising a limiting module (24) designed to limit the variation of the power supplied or drawn by said terminal, for a given voltage variation, when the difference in power between the power supplied or drawn by said terminal and the upper power limit or the lower power limit falls lower than a predetermined value.

IPC Classes  ?

• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link

Abstract

The invention proposes a device for the mechanical disconnection of a high-voltage or very-high-voltage electrical circuit (2) of the type; - having two mobile electrodes (20, 22) that allow a nominal electric current to flow through the device along a main electrical path (2P) for a complete electrical closure position; - wherein the two electrodes, for an intermediate position, form a secondary electrical path (2S) through the device, the main electrical path being interrupted, characterized in that the device includes, in the secondary electrical path, an overvoltage arrester (50) in series with the pair of secondary contacts, and a commanded switch (52) able to switch a current flowing in the secondary electrical path either through the overvoltage arrester or into a short circuit (2S52) of the overvoltage arrester. The invention also proposes an electrical installation including such a device and a method for controlling such a device.

IPC Classes  ?

• H01H 33/16 - Impedances connected with contacts
• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle
• H02J 1/00 - Circuit arrangements for dc mains or dc distribution networks
• H01H 33/02 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means Details

Abstract

The invention concerns a power flow control device intended to be used in a mesh network, said device comprising: - a first voltage source connected between the first terminal (B1) of same and the third terminal (B3) of same, - a second voltage source connected between the second terminal (B2) of same and the third terminal (B3) of same, - a current source connected alternately to the first voltage source and the second voltage source and configured to ensure a transfer of energy between the first voltage source and the second voltage source, - switching means arranged to allow said current source to be connected alternately in parallel with the first voltage source or in parallel with the second current source.

IPC Classes  ?

• H02J 1/10 - Parallel operation of dc sources
• H02J 1/14 - Balancing the load in a network
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02J 4/00 - Circuit arrangements for mains or distribution networks not specified as ac or dc

Abstract

The invention relates to a method for controlling a high-voltage direct-current network (1) comprising: - high-voltage power lines (121, 123, 131, 133, 231, 233); - first to third conversion stations (11, 12, 13) each comprising: - a direct-current network interface comprising first and second poles (141, 142, 143); - at least two AC/DC converters (101, 102) connected between the alternating-current network interface and the direct-current network interface; - a control device (15) accessing a database storing a maximum intensity value at the nominal voltage and the corresponding growth time for each of the converters; - the control device determines an increased power to be exchanged for compensation on the second pole of the stations in the event of a fault on one of the high-voltage lines connected to the first pole based on the defective pole and based on the values stored in the database.

IPC Classes  ?

• H02J 1/00 - Circuit arrangements for dc mains or dc distribution networks
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link

Abstract

The invention relates to a multi-level modular converter (10) provided with a control module (20) comprising a computer (22) to calculate an internal control setpoint of the converter and an energy management module (24) allowing a power setpoint to be determined that is to be transmitted to the alternating electrical power supply network (110), the control module being configured to regulate the voltage at the point of connection of the converter to the direct electrical power supply network (120) and to regulate the voltage at the terminals of each capacitor modelled as a function of the internal control setpoint and of the power setpoint to be transmitted to the alternating electrical power supply network.

IPC Classes  ?

• H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters

Abstract

The present invention concerns a detection device (19) for detecting a short circuit current in an electrical power transmission cable (1), comprising: - an electrical power transmission cable (1) for a high-voltage DC network, comprising: • a central core (3), • an insulating sheath (5), • a metal screen (7) arranged around the insulating sheath (5), • at least one optical fibre (13), arranged between the electrically conductive central core (3) and the metal screen (7) by forming windings around the central core (3) in a detection region, - two optical transmitters (15A, 15B) arranged at the ends (1A, 1B) of the electrical power transmission cable (1), - two optical detectors (17A) arranged at the ends (1A, 1B) of the electrical power transmission cable (1), - two interruption devices (21A, 21B) arranged at the ends (1A, 1B) of the electrical power transmission cable (1), coupled to the optical detectors (17A, 17B) and configured to interrupt the connection of the electrical power transmission cable (1) when a change in the angle of polarisation with respect to a reference angle greater than a predetermined value is detected by the first optical detector (17A).

IPC Classes  ?

• H01B 7/32 - Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
• G01R 15/24 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
• H02H 1/00 - Details of emergency protective circuit arrangements
• G01R 31/08 - Locating faults in cables, transmission lines, or networks
• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
• G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
• G01R 31/02 - Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection
• H02H 3/087 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current for DC applications
• H02H 7/22 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systemsEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for switching devices
• H01B 9/00 - Power cables

Abstract

Device for controlling a terminal for re-establishing power in a multi-terminal high-voltage DC transmission installation including the terminal, the terminal comprising at least one voltage converter comprising an electrical energy storage module and being connected between an AC electrical power supply network and a DC portion of said installation, the device including an isolation module that is configured to control the isolation of the converter with respect to the AC electrical power supply network when the DC portion of the installation is in the low-voltage state, the device including a module for transferring the energy stored in the electrical energy storage module of the converter to the DC portion of the installation, a module for connecting the converter to the AC electrical power supply network when the DC portion of the installation is in the high-voltage state, and a module for re-establishing power in said installation.

IPC Classes  ?

• H02J 5/00 - Circuit arrangements for transfer of electric power between ac networks and dc networks
• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
• H02M 7/483 - Converters with outputs that each can have more than two voltage levels
• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/25 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in series, e.g. for multiplication of voltage
• H02M 1/36 - Means for starting or stopping converters
• H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
• H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
• H02J 1/14 - Balancing the load in a network
• H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• H02J 1/08 - Three-wire systemsSystems having more than three wires
• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• H02J 3/28 - Arrangements for balancing the load in a network by storage of energy
• H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers
• H02J 4/00 - Circuit arrangements for mains or distribution networks not specified as ac or dc

Abstract

The invention concerns a method for controlling an AC/DC converter (1 ) which comprises n power cells Ci, and wherein: - each power cell comprises an AC/DC input converter (In i) and an isolated DC/DC converter (Conv_i); - each input converter (In i) of a cell Ci being connected in series to the input converter (ln_i+1) of the cell Ci+1 in order to form an input stage (IN); - the DC/DC converter (Conv_i) of each cell Ci being connected in parallel to the DC/DC converter (Conv_i+1) of the cell Ci+1 in order to form an output stage (OUT). The input stage (IN) is controlled in order to regulate the output voltage (Uout) at a reference value (Uout_ref) by controlling the input current (lac). Each DC/DC converter (Conv_i) is controlled in a first operating mode (DAB) or in a second operating mode (SAB).

IPC Classes  ?

• H02M 7/23 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel

Abstract

The invention relates to a current cut-off device (1) for high-voltage DC current, comprising: • in series, a cut-off apparatus (121) and a current limiter (111); • an accumulation line (130) in parallel with the current limiter (111), • an oscillating circuit (142), in parallel with the cut-off apparatus (121), comprising an oscillation control switch (122) and having an inductance (133) characterised in that the accumulation line (130) comprises at least two accumulation capacitors (131, 132), and in that the oscillation line extends from a branch connection point (135) of the accumulation line located between the two accumulation capacitors (131, 132), determining a secondary segment (137) of the accumulation line (130) connected to the main conduction line (141) between the current limiter (111) and the main cut-off apparatus (141) so as to form part of the oscillating circuit.

IPC Classes  ?

• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle
• H02H 9/02 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current

Abstract

An electronic power module (1) comprising at least one semiconductor (5) connected to connection conductors (6, 7), and comprising a dielectric support (10) having a stationary layer (9) on which at least one of said connection conductors (6) is mounted, as well as a movable layer (11), the stationary layer (9) and the movable layer (11) having similar dielectric permittivity and being superposed along at least one surface facing the at least one connection conductor (6).

IPC Classes  ?

• H01L 23/427 - Cooling by change of state, e.g. use of heat pipes
• H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
• H01L 23/373 - Cooling facilitated by selection of materials for the device

Abstract

The invention relates to a conductive component (21) that attenuates very fast overvoltages, for very high-voltage electrical substations, said component comprising a hollow metal bar (25) a segment (27) of which is machined to form a solenoid. The solenoid segment (27) has an inductance higher than 3 µH. The component furthermore comprises: first and second electrodes (29, 31) that extend radially with respect to the axis (33) of the hollow metal bar (25), said electrodes being connected to the hollow metal bar (25) and defining an internal space (35); and an element (37) that forms both a capacitor and resistor, said element being placed in the internal space (35) and connected to the two electrodes (29, 31).

IPC Classes  ?

• H02H 9/04 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
• H02G 5/06 - Totally-enclosed installations, e.g. in metal casings
• H01F 27/40 - Structural association with built-in electric component, e.g. fuse
• H01F 38/02 - Adaptations of transformers or inductances for specific applications or functions for non-linear operation

Abstract

The invention relates to a DC high-voltage electrical installation comprising a switching device (22) for switching an electric current in the main circuit (24), and a method for controlling the closure of a switching device in such an installation, characterized in that the installation (23) includes a controlled variable resistor system (26) making it possible to modify the resistance value of the resistor system (26) seen by the current flowing through the main electrical circuit (24), said resistance value taking at least three distinct values: high, a lower value, and at least one nonzero intermediate value comprised between the high value and the low value. The installation includes a coordination device (32) making it possible to control switching times (T1, T2) of the resistance values of the resistor system (26).

IPC Classes  ?

• H01H 9/54 - Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
• H01H 33/16 - Impedances connected with contacts
• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle

Abstract

The invention concerns a DC/DC converter comprising: a multilevel DC/AC converter, the output terminals (3a) of which are connected to the input terminals of an inductive circuit (4, 7) in which an AC current flows, a DC input voltage (Vb) of the DC/DC converter being applied between the input terminals of the DC/AC converter, and an AC/DC converter with multilevel voltage source (52), the input terminals (3b) of which are connected to the output terminals of the inductive circuit (4, 7), a DC output voltage (Vh) of the DC/DC converter being available between the output terminals of the AC/DC converter. The DC/DC converter according to the invention is characterised in that the DC/AC converter is a DC/AC converter with multilevel current source (6).

IPC Classes  ?

• H02M 3/28 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

The invention provides a high-voltage electrical transformer including: - a magnetic circuit (20); - at least one primary winding (22) and at least one secondary winding (24), each including at least one conductor which is wound in the form of turns around the magnetic circuit (20); - an electrically insulating housing (26) which encapsulates the magnetic circuit (20) and which has an outer envelope surface (28) on which the primary and secondary winding are wound and an inner envelope surface which defines an inner volume in which the magnetic circuit (20) is accommodated, characterized in that each turn of a winding (22, 24) is accommodated in a winding groove which is formed in the outer envelope surface (28) of the insulating housing (26), and in that each winding groove is provided with a conductive groove layer.

IPC Classes  ?

• H01F 30/16 - Toroidal transformers
• H01F 27/28 - CoilsWindingsConductive connections
• H01F 27/30 - Fastening or clamping coils, windings, or parts thereof togetherFastening or mounting coils or windings on core, casing, or other support
• H01F 27/32 - Insulating of coils, windings, or parts thereof

Abstract

The invention relates to an underwater system for connecting at least three underwater high-voltage or very high voltage electrical cables (10', 10", 10"'), of the type comprising: - an outer cage (22) defining a connection space; - a connection fitting (30) comprising a conductive connection electrode (32) which has a junction node (34) from which at least three branches (36', 36", 36''') extend; characterised in that - each of said at least three branches (36', 36", 36''') of the conductive electrode (32) comprises a male terminal portion (38) which is connected to one of the electrical cables in a connection zone around which is mounted a connection sleeve (44, 46) made of insulating premoulded material, which receives, via each end, a male terminal portion (38) of one of the branches of the conductive electrode and the connection end of one of the electrical cables.

IPC Classes  ?

• H02G 15/14 - Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers specially adapted for submarine cables
• H02G 15/184 - Cable junctions protected by sleeves, e.g. for communication cable with devices for relieving electrical stress
• H02G 15/113 - Boxes split longitudinally in main cable direction
• H02G 15/115 - Boxes split perpendicularly to main cable direction
• H01R 31/02 - Intermediate parts for distributing energy to two or more circuits in parallel, e.g. splitter
• H01R 13/523 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases for use under water

Abstract

The invention concerns a switch for a high or medium voltage DC grid, comprising a DC circuit breaker (5) the sealed chamber of which contains a gaseous fluid comprising at least 70% by volume carbon dioxide at a pressure of between 0.65 MPa and 1.1 MPa measured at a temperature of 20°C and a resonant circuit having a capacitance value (C) in μF and an inductance (L) in μΗ less than 2700*C-0.84.

IPC Classes  ?

• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle
• H01H 33/22 - Selection of fluids for arc-extinguishing

Abstract

The invention relates to a method for protecting a network comprising: -electrical lines (120, 130, 230); -three nodes (10, 20, 30) for interconnection with: -a high-voltage interface with controlled switches; -a local network interface; -local networks for each respective node (10, 20, 30), comprising: -an MMC converter (16, 26, 36); -a protective circuit with, in parallel, a first controlled switch (14) and a first limiter (15), a second controlled switch (12) and a second limiter (13). The method comprises the steps of: -keeping said first switches (14) closed and said second switches (12) open; -measuring voltage and current at the high-voltage interfaces; -communicating the direction of the current, to the other end of a high-voltage line; -for each node: -identifying a fault; -checking that the current is lower than the breaking capacity of the high-voltage interface switch and opening this switch.

IPC Classes  ?

• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle
• H02H 3/02 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection Details
• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
• H02H 7/28 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred for meshed systems
• H02H 9/02 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current

Abstract

The control method allows the control of an installation (1) for transmitting electricity comprising a DC transmission network (3) including a group (2) of electricity transmission lines (4) that are linked to one another. The method allows the opening (E1) of at least one N-1 safety system (7) such that, for each safety system (7) being opened, the contribution to the flow of current through the group (2) of transmission lines (4), originating from the converter station (6) associated with said safety system (7) that is opened, is removed. Furthermore, the method also allows a search (E2) for the short-circuit fault in order to identify the faulty transmission line (4), and an operation (E3), implemented after identification of the faulty transmission line (4) by the search step (E2), of isolating the faulty transmission line (4) by opening the line circuit breakers (5a, 5b) of said faulty transmission line (4).

IPC Classes  ?

• H02H 3/30 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to difference between voltages or between currentsEmergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel
• H02H 7/10 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers
• H02H 7/122 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
• H02H 7/28 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred for meshed systems

Abstract

The invention relates to a method for controlling a multi-level modular converter (10), the method comprising an internal adjustment that can be modelled by a continuous time model which can be represented in the form of an equation system, the internal adjustment being implemented based on a discrete time model, and the discrete time model being obtained via a step of transforming the equation system to represent it in matrix form, and a step of discretizing the equation system represented in said matrix form.

IPC Classes  ?

• H02M 7/49 - Combination of the output voltage waveforms of a plurality of converters
• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

The invention relates to a multilevel modular converter (10) including a control module (12) for regulating the internal energy stored in the capacitors of the submodules of a half arm of the converter, the control module being capable of keeping the internal energy below an upper limit and/or above a lower limit, by using parameters measured on the DC electrical power supply network (110) and on the AC electrical power supply network (120) as well as operating power setpoints of the converter.

IPC Classes  ?

• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

The invention relates to a method of control used in a processing unit (PU) to control a DC/DC converter with a dual-bridge topology comprising two conversion stages. The said DC/DC converter is controlled by the processing unit (PU) to convert a first DC voltage (Vin) into a second DC voltage (Vout) while using a main regulating circuit (B1). The said method is characterized in that it is adapted to: - Determine an optimal phase angle (ø') from the first DC voltage (Vin) and the second DC voltage (Vout), Determine a switching frequency or act upon the switching frequency to be applied to the switches, in such a way as to make a current phase angle (ø) from the main regulating circuit correspond with the optimal phase angle (ø').

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

The invention relates to a medium- or high-voltage current breaking system comprising an arc-extinguishing chamber comprising, in a closed enclosure (10), a pair of arc contacts (4, 5), one (5) of the contacts being movable with respect to the other (4) under the action of a maneuvering member (13), the contacts separating while forming an electric arc in an arc zone (16) inside the enclosure (10). According to the invention, the system is characterized in that it also comprises an injection means (20) suitable for injecting, into an injection zone (17) adjacent to the arc zone (16) (or comprising it), a predefined volume of liquid in a first time that is shorter than a second time required for the appearance of the arc, which second time is composed of a time required by the maneuvering member to take account of a control signal for opening the contacts and setting the contacts in motion and a time required by the maneuvering member to move the contacts until the moment when the contacts physically separate while forming the electric arc. Application to the production of medium- or high-voltage circuit breakers.

IPC Classes  ?

• H01H 33/84 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being liquid, e.g. oil
• H01H 33/92 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by, or in conjunction with, the contact-operating mechanism the arc-extinguishing fluid being liquid, e.g. oil
• H01H 33/56 - Gas reservoirs

Abstract

The invention relates to an electrical insulation material comprising a polymer matrix and at least one filling material having an activation energy lower than the activation energy of the polymer matrix. The invention is used to produce an insulating accessory for a gas-insulated direct-voltage substation. The invention is also used to insulate a cable and to produce an insulating sheath around a conductor.

IPC Classes  ?

• H01B 3/40 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes epoxy resins
• C08K 3/00 - Use of inorganic substances as compounding ingredients
• C08K 3/08 - Metals
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins

Abstract

The invention relates to an electrical transformer (1) comprising a cable (11) including: a central section (2), an intermediate section (3) and a peripheral section (4), the central section (2) comprising a first winding (21) of a primary circuit and a first winding of a secondary circuit (22), and a first insulation layer (23) between said winding of the primary circuit and said winding of the secondary circuit, the intermediate section (3) surrounding the central section (2) and comprising a magnetic core (31), the peripheral section (4) surrounding the intermediate section (3) and comprising a second winding (41) of the primary circuit and a second winding (42) of the secondary circuit, and a second insulation layer (43) between said winding of the primary circuit and said winding of the secondary circuit; electrical connections (51, 52) between the first and second windings of the primary circuit and between the first and second windings of the secondary circuit.

IPC Classes  ?

• H01F 27/32 - Insulating of coils, windings, or parts thereof
• H01F 30/06 - Fixed transformers not covered by group characterised by the structure
• H01F 30/10 - Single-phase transformers

Abstract

The invention relates to a high-voltage electric insulator (1) comprising an elongate insulating element (11) that extends along an axis and has first and second ends (117, 118) at a distance from each other along said axis, and further comprising at least first and second resonant circuits (122, 123) that are galvanically insulated from each other by the insulating element (11), the first and second resonant circuits each comprising at least one winding extending about the axis, said windings being at a distance from each other along the axis and being magnetically coupled.

IPC Classes  ?

• H01B 17/00 - Insulators or insulating bodies characterised by their form
• H01B 17/42 - Means for obtaining improved distribution of voltageProtection against arc discharges

Abstract

The invention relates to a method for monitoring the opening of a mechanical switching device in an AC high-voltage electrical circuit, having two electrodes that are subjected to an AC electrical potential and to a floating potential, respectively, characterized in that the method comprises: - an initial opening step in which a relative movement of the two electrodes is effected at a first mean speed of separation of more than 0.05 meter per second, preferably more than 0.1 meter per second; - at least one stabilizing step, in which a relative movement of the two electrodes is effected at a stabilizing mean speed of separation of less than 0.03 meter per second. The invention also relates to an electrical installation implementing such a method.

IPC Classes  ?

• H01H 33/44 - Devices for ensuring operation of the switch at a predetermined point in the AC cycle
• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle

Abstract

The invention relates to a circuit breaker for a high- or medium-voltage DC network, comprising a branch (Α-Α') with a mechanical circuit breaker (S1) inserted into the line of the network and in parallel with which are mounted on the one hand a surge-protector branch (5), and on the other hand, in series, a first bank of capacitors (C), a trip switch (S2) and an inductor. According to the invention, this circuit breaker comprises at least one first resistive voltage divider (Rs) linked to the voltage of the network and exhibiting a low-voltage stage (R1s) connected in parallel with the bank of capacitors (C) so as to charge the bank of capacitors.

IPC Classes  ?

• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle

Abstract

The invention relates to an item of interconnection equipment (2) for a high-voltage DC grid, comprising: - first and second terminals for connection to first and second lines of a high-voltage DC grid (201, 202), a third terminal (203) for connection to a local station or a line of the high-voltage grid; - a node (204) connected to the first to third terminals (201, 203); - a first superconductor current limiter (251) and a first controlled switch (261) connected in series between the first terminal and said node; - a second superconductor current limiter and a second controlled switch connected in series between the second terminal and said node; - a third superconductor current limiter and a third controlled switch connected in series between the third terminal and said node; - and a device configured to inject an electrical current into said node.

IPC Classes  ?

• H02J 3/36 - Arrangements for transfer of electric power between ac networks via a high-tension dc link
• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
• H02H 7/28 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred for meshed systems

Abstract

The invention relates to a mechanical cut-off apparatus for an electric circuit comprising two electrodes mobile with respect to one another, and comprising an electric arc splitting device (48) comprising a multitude of distinct conducting elements separated and isolated electrically from one another. According to the invention, the splitting device comprises a first part and a second part, mobile with respect to one another between: - a position of electrical contact, and - a separated position of the two parts. The splitting device (48) comprises at least one series of said distinct conducting elements which, in the electrical closure position of the electrodes of the mechanical apparatus, are disposed along the continuous conducting electrical path of the nominal electric current through the apparatus defined by the two parts of the splitting device in the electrical contact position.

IPC Classes  ?

• H01H 33/04 - Means for extinguishing or preventing arc between current-carrying parts
• H01H 33/12 - Auxiliary contacts on to which the arc is transferred from the main contacts
• H01H 33/08 - Stationary parts for restricting or subdividing the arc, e.g. barrier plate
• H01H 33/14 - Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc

Abstract

The invention relates to a modular multi-level converter (2) provided with a control module (4) and a calculator (10) for calculating a set value for the internal energy of the converter, stored in the capacitances of the sub-modules of the half-arms. The control module is designed to deduce, from said set value for the internal energy of the converter, a set value for the voltage at the terminals of each modelled capacitor used to regulate the voltage at the points of connection of the converter to the continuous power supply network and the voltage at the terminals of each modelled capacitor.

IPC Classes  ?

• H02M 7/483 - Converters with outputs that each can have more than two voltage levels

Abstract

The invention relates to a current tripout device (1) for high voltage DC current, comprising: -a main conduction line (141) and a secondary conduction line (142) which are connected in parallel between the terminals; -the main conduction line (141) comprising a first controlled switch (121) and connected in series with a circuit including a capacitor (131) and a current limiter (111); -the secondary conduction line (142) comprising a second controlled switch (123), the main and secondary conduction lines forming an oscillating circuit across the terminals of the first controlled switch when the first and second controlled switches are closed; -a control circuit (103) exhibiting a first mode of operation for keeping the first switch (121) closed and the second switch open (123), and a second mode of operation for keeping a command for opening the first switch (121) and a command for closing the second switch (123).

IPC Classes  ?

• H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle