A high- or medium-voltage circuit breaker, in which a movable contact (1) is moved in sliding in order to separate stationary contacts (11, 12) from its sliding surface (2). In accordance with the invention, the stationary contacts (11, 12) have switching portions (9) that separate from the movable contact more or less simultaneously as a result of a setback (19) in the movable contact (1), thereby causing two simultaneous switching arcs to appear (14, 15), which arcs are extinguished much more quickly than a single arc, before the current is transferred to the conventional arcing contacts (5). This disposition enables the stationary contacts (11, 12) and their environment to be less exposed to damage.
The invention relates to a circuit breaker (10) for an electricity transport installation, the circuit breaker comprising a tank (12), a vacuum bottle (20) that has a stationary contact (24), a movable contact (26), and sealing means (40), a casing (30) that is arranged inside the tank (12), that electrically connects the movable contact (26) to an electrical conductor (18), and that co-operates with an outside wall of the vacuum bottle (20) to define a volume (42) that is taken to a pressure close to atmospheric pressure, and feeder means for feeding the inside volume (42) of the casing (30), which feeder means pass through the inside volume (14) of the tank (12), the circuit breaker being characterized in that the feeder means for feeding the inside volume (42) of the casing (30) consist in a tubular element (38, 54, 56) made of insulating material.
Circuits comprising at least one energy storage device, a resistor and switch arranged in series with the resistor are described. The energy storage device is arranged in parallel with the series connection of the switch and the resistor, and the switch is arranged to selectively switch the resistor into a parallel connection to the energy storage device. In some examples, the switch comprises a series connection of semiconductor switching elements. In some examples, the circuit may comprise a sub-module for use in a multilevel modular converter.
H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
H02M 7/06 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge sans électrode de commande ou des dispositifs à semi-conducteurs sans éléctrode de commande
H03K 17/10 - Modifications pour augmenter la tension commutée maximale admissible
H02M 7/217 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques - Détails
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02M 1/088 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques pour la commande simultanée de dispositifs à semi-conducteurs connectés en série ou en parallèle
A DC to DC converter for converting voltage between two voltage levels is described. The converter comprises a plurality of capacitors and switch units and is controllable between a first and second commutation state. In the first commutation state, the converter is configured for connection to higher voltage terminals and the capacitors are connected in series. In the second commutation state, the converter is configured for connection to lower voltage terminals, and the capacitors are connected to form at least two branches connected in parallel, the branches comprising a series connection of at least two capacitors. In some embodiments, one or more intermediate commutation states may also be provided.
H02M 3/07 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des résistances ou des capacités, p.ex. diviseur de tension utilisant des capacités chargées et déchargées alternativement par des dispositifs à semi-conducteurs avec électrode de commande
Systems and methods according to these exemplary embodiments provide for methods and systems related to optical current sensors used to monitor standby power transformers, specifically fiber optical current and voltage sensors and, more particularly, to applications involving filters for use in such sensors, such as frequency tracking comb filters. According to one embodiment, a method for monitoring a connection condition of a stand by power transformer includes the steps of measuring a current flowing through a high voltage side of the standby power transformer using at least one optical current sensor disposed proximate to a current flow path of the high voltage side, using a comb filter to filter the measured current, determining whether the filtered, measured current is less than a predetermined threshold value; and generating an alarm indication that the high voltage side of the standby power transformer is unconnected.
G01R 31/04 - Essai de connexions, p.ex. de fiches de prises de courant ou de raccords non déconnectables
G01R 15/24 - Adaptations fournissant une isolation en tension ou en courant, p.ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs modulateurs de lumière
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
The invention concerns a top head housing (12) for a current transformer (10), which is to be mounted on top of an insulating column (16) of the current transformer, and forming a chamber for windings (14) of the current transformer (10), said top head housing (12) being made of two parts (20) fixed one to the other, and comprising two openings (18) through each of which a conductor penetrates the chamber, said openings (18) being symmetrically opposed with reference to a main vertical axis (A) of the top head housing (12), characterized in that the two parts (20) of the top head housing (12) consist of two half shells (20) comprising identical bodies (24).
This application relates to methods and apparatus for control apparatus of a voltage source converter for direct current transmission of electrical power over a transmission line. The control apparatus comprises regulation control for generating a regulation signal for the converter to regulate an electrical parameter of the voltage source converter, such as voltage or power, so as to regulate power transmission over the transmission line. The regulation signal is based on the difference between a measured value of said parameter and a reference value of said parameter, as may be supplied from a reference control block and may be derived from a demand signal indicating the voltage or power demand. The apparatus also includes damping control configured to generate a damping signal for modulating said regulation signal to reduce the effect of resonance within the bandwidth of control of the converter. The damping signal is generated as a function of a measured voltage or current of the transmission line and an impedance value for the transmission line. The damping signal may be high-pass filtered so as to have no substantial impact on steady state operation.
H02M 5/42 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases avec transformation intermédiaire en courant continu par convertisseurs statiques
H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02J 1/02 - Dispositions pour réduire les harmoniques ou les ondulations
The invention provides a voltage sensor for a very high-voltage direct current line comprising two voltage divider stages connected in series, the sensor being characterized in that a first voltage divider stage (E1) that divides the very high voltage to an intermediate voltage is constituted by at least two elementary voltage divider stages (Em) connected in series and distributed in a composite insulator (I), each elementary stage (Em) comprising a resistor Re in parallel with a capacitor Ce, the second voltage divider stage (E2) that delivers the intermediate voltage being constituted by electronic components comprising capacitors and/or interchangeable resistors.
s) connected to a component to be supported; the support structure being characterized in that the pillar (16) includes at least one helical slot (20) coaxial about the main axis of the pillar (16).
The present invention provides medium- or high-voltage equipment including a leaktight enclosure in which there are located electrical components and a gas mixture for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, the gas mixture comprising heptafluoroisobutyronitrile, carbon dioxide, and oxygen in small quantities. Electrical components covered in a solid dielectric layer of varying thickness are located inside said leaktight enclosure of the equipment of the invention.
H01B 3/56 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques gaz
The invention relates to an assembly of modules (10) for an electrical circuit comprising: a module support (100) for at least two modules (200) and at least two modules (200), each module (200) comprising two complementary connectable sub-modules (210, 220). The module support (200) comprises for each sub-module (210, 220) at least an alignment member adapted to individually align the sub-module (210, 220) during its installation on the module support (100) in such way to connect it to complementary sub-module (220, 210) already installed on the module support (100) to form one of the modules (200). The invention also relates on a module support (100), a module (200) and a Flexible Alternative Current Transmission Systems.
The invention relates to a high power electrical module (10) comprising at least a first and a second electrical sub-module (111, 112), at least a first bus bar (131) that electrically connects together the first and the second electrical sub-module (111, 112), and at least a first and a second heat sink (120, 125) on which are respectively mounted the first and the second electrical sub-module (111, 112). The first and the second heat sink (120, 125) are arranged independently movable from each other in such manner to compensate the expansion of the first bus bar (131). The invention also relates on a voltage-source converter.
H01L 23/34 - Dispositions pour le refroidissement, le chauffage, la ventilation ou la compensation de la température
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
13.
Exhaust diffuser for a gas-insulated high voltage circuit breaker
A gas exhaust diffuser for a circuit breaker, comprising a first casing extending longitudinally along a principal axis with an open end to allow gas to enter and a closed end, and a second casing coaxial to the first casing, extending along the principal axis, with at least one outlet to allow gas to escape, the closed end of the first casing being arranged in the second casing and the first casing having at least two radial openings near its closed end to provide a fluid communication between the first and second casing. A plurality of incurved elements are positioned radially in the second casing at the at least one radial opening to create a rotation of an entering exhaust flow in a plan perpendicular to the principal axis, thereby generating a substantially helicoidally-shaped exhaust flow path in the second casing.
H01H 33/74 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc comportant des organes fixes pour diriger l'écoulement du fluide extincteur d'arc, p.ex. chambre d'arc dans lesquels la coupure s'opère dans un gaz
H01H 33/88 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc l'écoulement du fluide extincteur d'arc étant produit ou augmenté par le mouvement de pistons ou d'autres organes produisant une pression
14.
NANOMETER ALUMINIUM OXIDE MODIFIED INSULATION PAPER AND PREPARATION METHOD THEREOF
A method for preparing nanometer aluminium oxide modified insulation paper, comprising: preparing a nanometer aluminium oxide solution, dissociating cellulose insulation paper at least once to prepare a pulp solution, mixing the nanometer aluminium oxide solution with the pulp solution, mechanically oscillating and uniformly stirring the same, and preparing the nanometer aluminium oxide modified insulation paper. The content of the nanometer aluminium oxide in the modified insulation paper is 0.2-2%. The nanometer aluminium oxide is used to modify the insulation paper, thus increasing an alternating current breakdown strength of the insulation paper, and reducing a relative dielectric constant and dielectric loss factor of a power frequency.
An insulation dielectric response test system comprises: a housing (101); a support (102), disposed in the housing (101) and fixed on the bottom of the housing (101); a first electrode (103), disposed in the housing (101); a second electrode (104), disposed on the support (102) and located below the first electrode (103); and a tested sample (105), disposed between the first electrode (103) and the second electrode (104); multiple positioning rods (106) having graduations, vertically disposed at the edge of the support (102) and used for fixing the tested sample (105), wherein each positioning rod (106) is in threaded connection to at least one pair of nuts (107), and the tested sample (105) is clamped between one pair of nuts (107); and a vacuum-pumping device (200), wherein the vacuum-pumping device (200) further comprises a cavity (201) adapted to accommodating the housing (101) and a first valve (202) disposed on the cavity (201) and adapted to being externally connected to a vacuum pump. The insulation dielectric response test system has reliable performance and can precisely control the dimensional scales of an oil channel and insulation paper, so as to simulate oil and paper barrier structures of all kinds of oil-immersed power transformers. In addition, the insulation dielectric response test system can also solve the problem of poor repeatability of oil paper insulation dielectric response tests.
G01R 27/26 - Mesure de l'inductance ou de la capacitance; Mesure du facteur de qualité, p.ex. en utilisant la méthode par résonance; Mesure de facteur de pertes; Mesure des constantes diélectriques
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
G01R 31/16 - Test de la rigidité diélectrique ou de la tension disruptive Électrodes pour de tels récipients
16.
DEVICE FOR ACTUATING A ROTATING SHAFT SELECTED FROM A PLURALITY OF PARALLEL ROTATING SHAFTS
A device (10) for actuating a rotating shaft selected from a plurality of parallel rotating shafts, characterized in that it comprises: a driving shaft (11) supported and actuated by corresponding rotation means (12), which is provided with a driving gear (13) for the transmission of torque, a plurality of driven shafts (14, 15, 16) each one of which is provided with a corresponding driven gear (17, 18, 19) that is designed to be meshed with the driving gear (13), the driven gears (17, 18, 19) being arranged on the respective driven shaft in an axial position that is offset with respect to the other driven gears, the driving gear (13) being capable of performing a translational movement axially with means of translational motion (20) for alternate meshing with one of the driven gears (17, 18, 19), the device (10) further comprising means (21) of prevention of rotation for the driven shafts whose driven gear is not meshed with the driving gear (13).
H01H 3/58 - Mécanismes pour le couplage ou découplage de la pièce actionnante, du mécanisme moteur ou des contacts utilisant un embrayage à friction, à dents ou un autre embrayage mécanique
H01H 31/00 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs
F16D 11/14 - Embrayages dans lesquels les organes ont des parties qui se pénètrent mutuellement avec des organes d'embrayage mobiles selon l'axe uniquement
H01H 3/22 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement
H01H 3/26 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur dynamo-électrique
H01H 3/40 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant la friction ou des appareillages dentés ou à vis écrou
The invention relates to a device for measuring temperature in a high-voltage portion of a switchgear station, characterised in that it comprises: at least one temperature sensor (21, 22, 23, 24) located at a point on the high-voltage portion of which the temperature is to be monitored, at least one antenna (25) connected to the at least one temperature sensor, a control module (26) located in a low-voltage portion of the switchgear station, and at least one antenna (27) connected to the control module. The at least one temperature sensor (21, 22, 23, 24) is suitable for transmitting a signal representative of a temperature measurement and the control module (26) is suitable for receiving the representative signal, via the antennas, and for processing said signal in order to produce a message.
G01K 1/02 - Moyens d’indication ou d’enregistrement spécialement adaptés aux thermomètres
G01K 11/26 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant la mesure d'effets acoustiques de fréquences de résonance
G01K 13/00 - Thermomètres spécialement adaptés à des fins spécifiques
H02B 13/035 - Appareillages de commutation à isolation gazeuse
18.
MEDIUM- OR HIGH-VOLTAGE CIRCUIT BREAKER OR ISOLATOR, PROVIDED WITH IMPROVED FIXED CONTACTS, AND METHOD OF USE
High- or medium-voltage circuit breaker, where a movable contact (1) is displaced by sliding, so as to clear fixed contacts (11, 12) of its gliding surface (2). In accordance with the invention, the fixed contacts (11, 12) possess switching parts (9) separated almost simultaneously, by virtue of an additional difference in level (19) of the movable contact (1), so as to cause the appearance of two simultaneous switching arcs (14, 15), which are extinguished much more quickly than a single, before the current is communicated to the customary arc contacts (5). By this arrangement the fixed contacts (11, 12) and their environment are less exposed to damage.
A current flow controller (30) comprises: first, second and third terminals (32, 34, 36) being connectable, in use, to first, second and third electrical elements (46) respectively, the third terminal (36) being electrically connected to each of the first and second terminals (32, 34); a bidirectional switch (38) being operatively connected between the first and third terminals (32, 36), the bidirectional switch (38) being switchable to selectively permit and block current flow between the first and third terminals (32,36), the bidirectional switch (38) including a pair of inverse-parallel or inverse-series connected first and second switching elements (q1,q2,q3,q4), each switching element (q1,q2,q3,q4) being configured to have reverse voltage blocking capability; an energy storage device (42) being connected between the first and second terminals (32, 34) to define a current path between the first and second terminals (32, 34), the energy storage device (42) providing a voltage source; and a control unit (44) configured to selectively control switching of the bidirectional switch (38) in a voltage drop injection mode to block current flow in the bidirectional switch (38) in order to inject a voltage drop, in use, into the first electrical element (46) and thereby direct current through the current path between the first and second terminals (32, 34) so as to carry out regulation of current flow in at least one of the electrical elements (46).
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
A synthetic test circuit (30), for performing an electrical test on a device (52) under test, comprises: a terminal (32, 34) connectable to the device (52) under test; a voltage injection circuit (40) operably connected to the terminal (32, 34), the voltage injection circuit (40) including a first voltage source (46a), the first voltage source (46a) including a chain-link converter, the chain-link converter including a plurality of modules, each module including a plurality of module switches connected with at least one energy storage device; and a controller (50) being configured to operate each module of the voltage injection circuit (40) to selectively bypass the or each corresponding energy storage device and insert the or each corresponding energy storage device into the chain-link converter so as to generate a voltage across the chain-link converter and thereby operate the voltage injection circuit (40) to inject a voltage waveform into the device under test, wherein the voltage injection circuit (40) further includes a second voltage source (46a), the second voltage source (46a) being or including a capacitive energy storage device (54), the capacitive energy storage device (54) being fixedly connected in circuit in the voltage injection circuit (40).
The invention relates to a conductor (2) for electrical equipment, the conductor comprising at least one hollow section member (2) of electrically conductive material that is elongate along a longitudinal axis (Y), the conductor having an outside surface in which at least a portion forms corrugations (23, 24) in a plane perpendicular to the longitudinal axis. The conductor may advantageously form a movable contact (blade) (2) of a high voltage disconnector.
H01H 31/28 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs avec contact mobile demeurant électriquement connecté à une ligne en position d'ouverture de l'interrupteur avec contact à déplacement angulaire
The invention relates to a device for detecting a partial discharge from high-voltage gas-insulated equipment, the device including at least one antenna (A) arranged outside the high-voltage gas-insulated equipment and opposite a hatch (H) of the high-voltage gas-insulated equipment, characterized in that it also includes a metal flange (B) which is placed in electrical contact with a metal wall (1a, 1b) of the high-voltage equipment, and which forms, together with said wall, a Faraday cage that electrically insulates the antenna from the outside of the high-voltage equipment, the metal flange (B) having a concave wall opposite the hatch (H).
The invention relates to electrical equipment (10) for a medium, high, or very high voltage power transmission line, comprising: a metal vessel (12); at least one conductor (14) arranged inside the vessel (12) and extending parallel to a main axis of the vessel (12); a medium (16) made from an insulating material, which lies in a plane that is radial relative to said main axis of the vessel (12), and which is connected to the conductor (14) as well as to the vessel (12); and studs (20) for connecting the medium (16) to the vessel (12), which are mounted onto the vessel (12), characterized in that each stud (20) is radially mounted through an associated opening (26) of the vessel (12) that opens radially toward the outside, and comprises an inner radial end (22) that engages with the medium (16).
The invention relates to a device for detecting a partial discharge from high-voltage gas-insulated equipment, the device being attached, outside the high-voltage equipment, onto a surface of an electrically-insulating part (1) that retains a high-voltage bar inside the high-voltage equipment, said surface defining, at the surface of the high-voltage equipment, a rotationally symmetrical cylinder, characterized in that it includes: an electrically conductive strip (2) attached onto a surface of a strip (6) of electrically insulating material, the electrically conductive strip being wound so as to only contact all or part of said surface; and an electrical-shielding (5) part attached onto the high-voltage equipment and positioned above the strip (6) of electrically insulating material.
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
25.
CLIP FOR CONNECTING A LOW-CURRENT DEVICE TO A GAS INSULATED SUBSTATION ALLOWING SAID DEVICE TO BE DISCONNECTED FOR AN OPERATIONAL TEST PHASE OF THE SUBSTATION
The invention relates to a clip for connecting a low-current device that is connected to earth to the conducting bar of a gas insulated substation, said clip being manoeuvrable when switched off for disconnecting the device with a view to a test of the substation. The fastening clip comprises: - an electrode (13) to be connected to the device which carries a contactor (13) movable in rotation between a closed position in which it extends said electrode (13) to bear against a terminal (4) of the conducting bar and an open position in which it is separated from said terminal of the conducting bar; - a housing portion (8) surrounding the electrode (13) and the movable contactor (16); - an arm (19) linked to the movable contactor (16) and passing through the housing portion (8) in order to manoeuvre the movable contactor (16) from the outside.
The invention relates to an expansion joint (1) for a pressurised insulating sheath comprising two sliding portions (9, 11), the first portion (9) comprising a pipe (14) which has a flare (16) followed by a ferrule (17) and a restriction (18) which has a central opening (19), for defining a recess (21) having a cross section which is twice that of the first pipe (14), the second portion (11) comprising another pipe (22) inserted into the opening (19) and into the pipe (14), having a flange (23) surrounding said second pipe (22) and extending into the annular recess (21) in order to divide said recess into two halves, a first aperture (27) passing through the flare (16) and a second aperture (28) passing through the second pipe (22) on the side of the flange (23) opposite the free end thereof, and means (J) for connecting, in a sealed manner, the opening (19) to the other pipe (22), the flange (23) to the recess (21), and the two pipes which are inserted into one another.
The invention relates to a high-voltage electrical facility comprising: - a first electrical apparatus (12) including an electrical component; - at least one second electrical apparatus (22), connected to the first electrical apparatus (12) and comprising an electrical component (38); and - a means for electrically connecting the electrical component of the first electrical apparatus (12) with the electrical component (38) of the second electrical apparatus (22). Said high-voltage electrical apparatus is characterized in that the electrical connection means comprises a connecting bar (48) that is electrically connected to the electrical component (38) of the electrical apparatus, at least one end (52) of the connecting bar (48) being movable and connectable to, or separatable from, the electrical component.
The invention relates to a device for cutting of current on a transmission line. The device includes three electrical branches (B1, B2, B3) mounted in parallel, including a main branch (B), through which the current to be cut off flows, and an auxiliary branch (B2). The main branch includes at least one cutoff cell (CEL1) that has a semiconductor element and is mounted in series with at least one mechanical switch/breaker (Sm). The auxiliary branch (B2) includes at least one thyristor. The current cutoff device includes a control means (CM) capable of cutting off current that flows in the main branch. Said current cutoff device is characterized in that the control means include means capable of controlling conduction of the thyristor of the auxiliary branch (B2) once current flowing in the voltage limiter(s) reaches the value of the current flowing in the transmission line, the current being switched off in the semiconductor element of the cutoff cell the main branch.
H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02H 7/22 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour dispositifs de commutation
29.
PROCESS OF MONITORING AND/OR CONFIGURING INTELLIGENT ELECTRONIC DEVICES INSTALLED IN AN ELECTRICAL POWER SYSTEM
Process of monitoring and/or configuring at least one remote Intelligent Electronic Device (IED2) located in a remote substation (S2) of an electrical power system, said remote Intelligent Electronic Device being linked by a teleprotection link (2) with a local Intelligent Electronic Device located in a local substation (S1), said local Intelligent Electronic Device, remote Intelligent Electronic Device and teleptrotection link (2) forming a protection scheme intended to protect specific circuits of the electrical power system, characterized in that the process comprises a step of implementing monitoring actions on said remote Intelligent Electronic Device (IED2) from a software running on said local Intelligent Electronic Device (IED1), the data exchanged between the local Intelligent Electronic Device and the remote Intelligent Electronic Device during the running of the software being transmitted through the teleprotection link (2).
G05B 23/00 - Test ou contrôle des systèmes de commande ou de leurs éléments
G06F 9/00 - Dispositions pour la commande par programme, p.ex. unités de commande
G06F 21/00 - Dispositions de sécurité pour protéger les calculateurs, leurs composants, les programmes ou les données contre une activité non autorisée
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
There is disclosed a method of removing a sub-module (14) of a voltage source converter from a valve module frame (12). The method comprises coupling a lifting line (24) of an overhead lifting mechanism (18), such as a gantry crane, to the sub-module (12); sliding the sub-module (14) out of the frame (12) on a bearing (46, 52, 66, 74), disposed between the sub-module (14) and the frame (12); and moving the sub-module (14) to a resting location out of the frame (12) using the overhead lifting mechanism (18). There is also disclosed an apparatus for removing a sub-module (14) of a voltage source converter.
The invention relates to a circuit breaker (10) for an electrical installation transporting current comprising a vessel (12), a vacuum bulb (20), a fixed contact (24), a moving contact (26) and leakproofing means (40), a casing (30) arranged in the vessel (12) which electrically connects the moving contact (26) to an electrical conductor (18), which together with an end wall of the vacuum bulb (20) delimits a volume (42) which is carried to a pressure close to atmospheric pressure, and means of supply of the interior volume (42) of the casing (30) which pass through the interior volume (42) of the vessel (12), characterized in that the means of supply of the interior volume (42) of the casing (30) consist of a tubular element (38, 54, 56) made of an insulating material.
A synthetic test circuit (30), for performing an electrical test on a device (52) under test, comprises: a terminal connectable to the device (52) under test; a current injection circuit (36) operably connected to the terminal, the current injection circuit (36) including a current source (42), the current source (42) including a chain-link converter, the chain-link converter including a plurality of modules, each module including at least one energy storage device; and a controller (50) configured to operate each module to selectively bypass the or each corresponding energy storage device and insert the or each corresponding energy storage device into the chain-link converter so as to generate a voltage across the chain- link converter and thereby operate the current injection circuit (36) to inject a current waveform (I) into the device (52) under test.
a protection relay which is configured to receive measurement values from the instrument transformers and to sample said measurements values at a constant sampling rate.
H02P 1/42 - Dispositions de démarrage de moteurs électriques ou de convertisseurs dynamo-électriques pour faire démarrer des machines dynamo- électriques ou des convertisseurs dynamo-électriques pour faire démarrer individuellement un moteur d'induction monophasé
H02H 7/06 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour compensateurs synchrones
H02H 7/08 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour moteurs dynamo-électriques
H02H 7/09 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour moteurs dynamo-électriques contre une interruption de phase
34.
SELF-BLAST CIRCUIT BREAKER USING THE TWO-PHASE STATE OF A GAS TO IMPROVE THE CUT-OFF PROPERTIES
The invention concerns a current interrupter chamber (1) for a medium or high voltage circuit breaker extending along a longitudinal axis (XX') and comprising: - a pair of arcing contacts (4, 5), at least one of which (5) is movable along the longitudinal axis (XX' ), - an arc blowing nozzle (6), - a blowing chamber (7) of which the volume V2 is fixed and that opens inside the blowing nozzle, - a compression chamber (8), arranged substantially behind the blowing chamber, and means (73, 81) for making the inner volume of said compression chamber (8) and that of the blowing chamber (7) communicate, - means (14, 15, 50), disposed substantially behind the compression chamber (8), for supplying a liquid, either in the compression chamber (8), or directly in the blowing chamber (7).
H01H 33/92 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc l'écoulement du fluide extincteur d'arc étant produit ou augmenté par le mouvement de pistons ou d'autres organes produisant une pression ce mouvement étant réalisé par ou conjointement avec le mécanisme qui actionne les contacts le fluide extincteur d'arc étant liquide, p.ex. de l'huile
35.
Voltage-source converter full bridge module IGBT configuration and voltage-source converter
The invention relates to a full Bridge module, for connecting an electrical device such as a DC capacitor to an electrical circuit. The full bridge module comprises: a first and a second terminal to connect to the electrical circuit; a third and a fourth terminal to connect to the electrical device. The full bridge module further comprises a first to a fourth switch that connect the first and the second terminal to the third and fourth terminal. The first and the second switches are arranged on a first surface, the third and the fourth switches being arranged on a second surface that is parallel to the first surface. The invention relates also to a Voltage-source converter.
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
36.
A COUPLER MEMBER FOR COUPLING TOGETHER THE CASINGS OF TWO GAS-INSULATED ELECTRICAL ELEMENTS
The invention relates to a coupler member for coupling together first and second gas-insulated electrical elements, respectively including a first casing and a second casing, in order to connect these casings to each other, said member including a socket (8) fitted with fastener means for fastening to the first casing and a sleeve (9) fitted with fastener means for fastening to the second casing. The sleeve (9) is engaged in the socket (8) having its free end presenting a groove (17) receiving a sealing gasket (16). The groove (17) is defined by a plane end wall (19) and by a flank (20) forming a surface of revolution. The free end of the socket (8) is fitted with a plate (18) in the form of a ring having clamping screws (22) that are screwed into the free end of the socket (8) in order to close the groove (17) and to compress the gasket (16) so that it deploys radially while bearing against the flank (20) and against the sleeve (9).
The invention relates to a full Bridge module, for connecting an electrical device such as a DC capacitor to an electrical circuit. The full bridge module comprises: a first and a second terminal to connect to the electrical circuit; a third and a fourth terminal to connect to the electrical device. The full bridge module further comprises a first to a fourth switch that connect the first and the second terminal to the third and fourth terminal. The first and the second switches are arranged on a first surface, the third and the fourth switches being arranged on a second surface that is parallel to the first surface. The invention relates also to a Voltage-source converter.
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
38.
Electrical apparatus with dual movement of contacts comprising a return device with two levers
The invention provides electric power line switchgear (10) comprising a main movable contact (14) and a secondary movable contact (16), capable of moving along a main axis A of the switchgear (10), in which the main movable contact (14) is connected to the secondary movable contact (16) by means of a crank mechanism (20) that transforms the movement of the main movable contact (14) in one direction into a movement of the secondary movable contact (16) in an opposite direction; the switchgear being characterized in that the crank mechanism (20) comprises two levers (22, 24) mounted to pivot relative to the stationary housing (12) about respective parallel pivot axes (B, C), each lever (22, 24) being connected firstly to a respective one of the main movable contact (14) and the secondary movable contact (16), and secondly to the other lever (24, 22).
H01H 25/00 - Interrupteurs avec mouvement composé de la poignée ou d'un autre organe moteur
H01H 3/46 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant une liaison par tige ou levier, p.ex. une genouillère
H01H 33/90 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc l'écoulement du fluide extincteur d'arc étant produit ou augmenté par le mouvement de pistons ou d'autres organes produisant une pression ce mouvement étant réalisé par ou conjointement avec le mécanisme qui actionne les contacts
H01H 33/02 - Interrupteurs pour haute tension ou courant fort comportant des moyens d'extinction ou de prévention des arcs - Détails
39.
Current connection and/or cut-off device comprising permanent contacts with reduced wear
Device for making and/or breaking a current including a pair of permanent contacts (3, 4), at least one of the contacts (3, 4) being movable. At least one permanent contact (3, 4) including a main portion (3.1, 4.1) having a free end and an end protection portion (3.2, 4.2) secured to the free end of the main portion (3.1, 4.1), designed to be in mechanical and electrical contact with the other permanent contact (4, 3) only during an operation for opening or closing the pair. The end protection portion (3.2, 4.2) is made of a single transition metal having a melting temperature that is strictly higher than that of the main portion (3.1, 4.1) to which it is secured, or of an oxide or carbide of such a metal, or even of zinc oxide. For application in particular to high- or medium-voltage circuit breakers.
H01H 33/78 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc dans lesquels un gaz extincteur d'arc est dégagé par des organes fixes; Emploi de matériaux spécifiés dans ce but dans lesquels la coupure s'opère dans un gaz
40.
Control device of the spring type particularly for a high-voltage or medium-voltage circuit breaker or switch
The control device possesses a rigid main part combining most of the functional elements of this type of control device. It is made up of two portions of a rotary shaft, having placed between them a cam and a support arm that are connected together by a pivot that is offset relative to the axis of rotation. A toothed wheel having an inner set of teeth is placed around the support arm that is provided with a rachet system. The toothed wheel has an outer set of teeth-driven by a motor, via an intermediate gearwheel. The pivot controls the compression of the actuator spring by the assembly rotating. The device is applicable to high and medium voltage circuit breakers and switches.
H01H 5/00 - Dispositions à action brusque, c. à d. dans lesquelles pendant une seule opération d'ouverture ou une seule opération de fermeture, une énergie est d'abord accumulée et ensuite libérée afin de produire ou d'aider le mouvement des contacts
H01H 3/38 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant un ressort ou autre couplage élastique de l'arbre
H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
H01H 3/42 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant des cames ou excentriques
H01H 3/34 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant un encliquetage
H01H 3/40 - Mécanismes-moteurs, c. à d. pour transmettre la force motrice aux contacts utilisant la friction ou des appareillages dentés ou à vis écrou
In the field of High Voltage Direct Current (HVDC) power transmission there is a need for an improved control module. A control module (40), for controlling a chain-link component (26, 28) of a converter (10), comprises two controllers (42, 44). Each controller (42, 44) is configured to selectively control a chain-link component (26, 28) in accordance with a control program that is stored in the said controller (42, 44). The control module (40) is configured to replace the control program stored in one of the controllers (42, 44) with a replacement control program while the other of the controllers (42, 44) is controlling the chain-link component (26, 28).
H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
42.
ROTATING-ARC CIRCUIT-BREAKER INCLUDING A HIGH-RESISTANCE FIELD COIL
The invention relates to a rotating-arc switchgear device (1), comprising a stationary contact (34) and a mobile contact (16) movable between a closed position in contact with the stationary contact (34) and an open position in which it is separated from the stationary contact (34), said circuit-breaker (1) including an inductor (13) including a coil (24) for generating a magnetic field which tends to rotate an electric arc (C2) that appears between the contacts (11, 16) about the longitudinal axis (AX) during the opening of said contacts. The inductor includes a coil (24) made up of a metal strip wound onto itself in a spiral.
H01H 33/18 - Moyens pour éteindre ou empêcher des arcs entre organes traversés par le courant utilisant des aimants de soufflage
H01H 33/98 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc l'écoulement du fluide extincteur d'arc étant amorcé par un arc auxiliaire ou une partie de l'arc en absence de tout organe mobile pour produire ou augmenter l'écoulement
43.
IMPROVEMENTS IN OR RELATING TO POWER MODULES FOR USE IN POWER TRANSMISSION NETWORKS
A configurable power module (10; 80; 90; 140) comprises a first sub-module (12) which includes a first pair (18) of series-connected switching elements (20, 22) that are separated by a first connection terminal (24) and are connected in parallel with a first energy storage device (26). The configurable power module (10; 80; 90; 140) also includes a second sub-module 14 which includes a second pair 36 of series-connected switching elements (38, 40) that are separated by a second connection terminal (42) and are connected in parallel with a second energy storage device (44). The first and second sub-modules (12, 14) are interconnected by a connection module (16) which is operable to interconnect the first and second sub-modules (12, 14) in first and second connection modes. The connection module (16), in the first connection mode, establishes a parallel connection between the first and second energy storage devices (26, 44) which has bidirectional current flow characteristics. The connection module (16), in the second connection mode, interconnects the first and second energy storage devices (26, 44) to permit the first and second energy storage devices (26, 44) to combine and generate a blocking voltage to oppose the flow of current between the first and second connection terminals (24, 42).
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
A single-phase electric furnace transformer is provided according to the basic principle of the invention, comprising: a single magnetic core, said magnetic core comprising two side columns and at least one main column; a main transformer, comprising a first primary side winding and a first secondary side winding which are disposed on said at least one main column, wherein said first primary side winding consists of a first winding and a second winding which are connected in series with each other; and a voltage regulating autotransformer, which is disposed on one of two side columns of said magnetic core, and which comprises a second primary side winding and a second secondary side winding, wherein said second secondary side winding is an adjustable winding having on-load tap switch, and said adjustable winding is connected in series between the first winding and the second winding of said main transformer. The direct effect on the regulating winding and the regulating switch by the over-voltage of the grid can be avoided in the single-phase electric furnace transformer of the invention, and the voltage between two terminals of the primary winding of the main transformer can be reduced. Furthermore, the winding of the voltage regulating transformer is disposed on the side column of the main transformer in the invention, so that the material and the transformer loss can be reduced, and the installation space of the transformer can be decreased.
H01F 21/02 - Inductances ou transformateurs variables du type pour signaux continûment variables, p.ex. variomètres
H01F 21/12 - Inductances ou transformateurs variables du type pour signaux discontinûment variables, p.ex. à prises
H01F 17/06 - Inductances fixes du type pour signaux avec noyau magnétique avec noyau refermé sur lui-même, p.ex. tore
H01F 29/04 - Transformateurs ou inductances variables non couverts par le groupe avec possibilités de regroupement ou d'interconnexion des enroulements avec possibilité de changer de prise sans interrompre le courant de charge
H01F 29/02 - Transformateurs ou inductances variables non couverts par le groupe avec possibilités de regroupement ou d'interconnexion des enroulements
H01F 27/38 - Organes de noyaux auxiliaires; Bobines ou enroulements auxiliaires
This application describes a voltage source converter (300) of the controlled transition bridge type, having three phase limbs, each phase limb having a high side director switch (Sw1, Sw3, Sw5) and a low side director switch (SW4, SW6, SW2) connecting a respective DC terminal (DC+, DC-) to an AC node (102a-c) for that phase limb. Chain- link circuits (101a-c) for each phase limb comprise a plurality of series connect cells (103), each cell having an energy storage element (105) that can be selectively connected in series or bypassed. The chain-link circuits are operated in a voltage mode to provide a defined voltage transition at the AC node during a transition between one director switch being turned off and the other directors switch being turned on. In embodiments of the invention the chain-link circuits (101a-c) are connected to a common node such that, in use, a current can flow from one phase limb to another via the respective chain-link circuits. A converter controller (900) operates a chain-link circuit of a phase limb in a current mode to provide a defined chain-link current for at least part of the time when that phase limb is not in a transition state. The defined current can allow correct circulation of the DC current and/or provide capacitor balancing of the capacitors of a chain-link circuit. Additional chain-link circuits (301, 302) are provided between the DC terminals and the common node to provide a DC current in a converter state where all the high side or low side director switches are off at the same time.
H02M 1/15 - Dispositions de réduction des ondulations d'une entrée ou d'une sortie en courant continu utilisant des éléments actifs
H02M 7/5388 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont avec configuration asymétrique des commutateurs
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
46.
METHOD OF TESTING A TRANSFORMER, ELECTRICAL TESTING SYSTEM, SHORT-CIRCUITING CIRCUIT AND ANODIZING ASSEMBLY
The invention relates to a method of testing a so-called rectifier transformer (20), intended to be installed at the interface between a power supply circuit comprising at least one phase, and an installation, the rectifier transformer (20) comprising for each phase of the power supply circuit a secondary coil (220) intended to be linked across a rectifier circuit (30) to the installation (40) by a positive branch and a negative branch, each of the branches being equipped with a magnetic transducer (230a,b,c,d,e,f), the method comprising the steps consisting in short-circuiting each positive branch with the corresponding negative branch and performing a measurement of impedance and/or of losses of the rectifier transformer (20). The invention also relates to an electrical testing system (2), a short-circuiting circuit (50) and an anodizing assembly. Figure 2
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
Circuits comprising at least one energy storage device (120), a resistor (206) and switch (204) arranged in series with the resistor (206) are described. The energy storage device is arranged in parallel with the series connection of the switch (204) and the resistor (206), and the switch (204) is arranged to selectively switch the resistor (206) into a parallel connection to the energy storage device (120). In some examples, the switch (204) comprises a series connection of semiconductor switching elements (202). In some examples, the circuit may comprise a sub-module (200) for use in a multilevel modular converter (300).
This application relates to methods and apparatus for fault protection in a DC power transmission network or grid (200) that aid in determining the location of a fault in the network. The method involves, in the event of a fault, controlling at least one current limiting element (201; 202) of the network so as limit a fault current flowing to below a first current level which is within the expected current operating range of the network in normal operation, i.e. a safe level. The current limiting element (201) may be part of a suitable voltage source converter (101) or a DC breaker (202) capable of current limiting. The fault current is then controlled to maintain a non-zero level of fault current flow. The characteristics of the fault current flow at different parts of the network are then determined by fault current detection modules (203a-d). The location of the fault is then determined, by the fault current modules (203a-d) or a control system (205), based on the determined characteristics of the fault current flow at different parts of the network. The characteristic may include the direction or polarity of current flow. In some embodiments the current limiting elements may impose an AC modulation on the fault current which differs across the network and the characteristics of fault current may include the presence or absence of such modulation.
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H02H 9/02 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de courant
49.
Electrical contact device of the contact finger type with a strong nominal current
An electrical contact device of the contact finger type for high nominal current between a first part that is conductive and a conductive surface of a second part comprising a flexible rod connected to a first connection element for mechanical and electrical connection to the first part, a contact portion applied on the conductive surface of the second part, and at least one metal contact blade placed at a first end between a first end of the flexible rod and the first part. The flexible rod is conductive, and the at least one metal blade is connected at its second end to the second end of the flexible rod by a second mechanical and electrical connection element.
H01H 1/24 - Contacts caractérisés par la manière dont les contacts coopérants s'engagent en butant l'un contre l'autre avec montage élastique
H01H 1/22 - Contacts caractérisés par la manière dont les contacts coopérants s'engagent en butant l'un contre l'autre avec membre pivotant rigide portant le contact mobile
H01H 1/02 - Contacts caractérisés par leur matériau
50.
CUTOFF CHAMBER FOR A MEDIUM-VOLTAGE OR HIGH-VOLTAGE ELECTRICAL CURRENT CUTOFF APPLIANCE WITH A BULB COMPRISING A LIQUID
The invention relates to a cutoff chamber of a medium-voltage or high-voltage current cutoff appliance, consisting of an enclosure comprising a tight cutoff bulb containing a fluid that has a boiling temperature which is higher than 90°C at atmospheric pressure and a melting temperature which is lower than -5°C at atmospheric pressure, the rest of the enclosure containing at least one insulating gas with a low environmental impact. The invention also relates to a cutoff appliance comprising such a cutoff chamber.
H01B 3/16 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances inorganiques gaz
H01B 3/24 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques liquides, p.ex. huiles contenant de l'halogène dans les molécules, p.ex. huiles halogénées
H01H 33/22 - Emploi particulier de fluides pour extinction d'arcs
51.
Medium- or high-voltage electrical appliance having a low environmental impact and hybrid insulation
The present invention relates to medium- or high-voltage equipment having low environmental impact, including a leaktight enclosure in which there are located electrical components covered with a solid dielectric layer of varying thickness and a gaseous medium for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, and that comprises heptafluoroisobutyronitrile in a mixture with a dilution gas.
H01B 3/56 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques gaz
H01H 33/22 - Emploi particulier de fluides pour extinction d'arcs
A DC to DC converter (300,300a, 700) for converting voltage between two voltage levels is described. The converter (300, 300a, 700) comprises a plurality of capacitors (404) and switch units (304, 406) and is controllable between a first and second commutation state. In the first commutation state, the converter (300, 300a, 700) is configured for connection to higher voltage terminals and the capacitors (404) are connected in series. In the second commutation state, the converter (300, 300a, 700) is configured for connection to lower voltage terminals, and the capacitors (404) are connected to form at least two branches (502) connected in parallel, the branches (502) comprising a series connection of at least two capacitors (404). In some embodiments, one or more intermediate commutation states may also be provided.
H02M 3/07 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des résistances ou des capacités, p.ex. diviseur de tension utilisant des capacités chargées et déchargées alternativement par des dispositifs à semi-conducteurs avec électrode de commande
53.
MECHANICAL FASTENING SYSTEM FOR ROTATING OR STATIONARY COMPONENTS
Mechanical fastening system (10) for rotating or stationary components (1) such as turbine or compressor blades on a rotor or a shaft or a casing, respectively comprising a circumferential mounting groove adapted for receiving root sections (2) of said rotating or stationary components (1) as well as intermediate fastening components (3) for fixation of said components (1) in equidistance positions, whereby said intermediate fastening components (3) comprise at least an upper platform (31) and at least a side plate (32) having a groove (4) for mounting on said rotor, whereby said intermediate fastening components (3) are made of a plurality of distinct parts (31, 32, 33) of different materials from which at least one clamping part (33) is made of or comprises a shape memory alloy or similar material having a pseudo-elasticity behavior.
The present disclosure relates to a stator assembly for an electrical machine, and more in particular relates to a support element utilized within the stator assembly in order to improve its performance. The support element allows the thermal expansion of round connection arms while detuning the Eigen-frequency and reducing the amplitude of the vibrations.
The present disclosure relates to a method for manufacturing the windings of rotating electrical plant. Joining copper half coils (1, 2) to a winding of such a generator rotor is usually accomplished by a brazing process, wherein each turn to be joined, located at the half coil end portions, are separately heated to the brazing temperature after carefully positioning the brazing material in the joint area. This conventional method generally requires a long time to be carried out, which results in high production costs. The object of the present invention is to provide a method for joining of said conductors (1, 2) which is faster and is able to reduce negative effects of brazing and heating, which impacts on adjacent portions. This object is realised by means of a brazing element (4) which is positioned over the coil stack (1, 2, 1A, 2A) to be joined.
H02K 3/14 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches avec des conducteurs transposés, p.ex. des conducteurs torsadés
The invention relates to a basic enclosure element (10) for forming an enclosure of a switchgear (1) for interrupting or isolating a high-voltage circuit. The basic enclosure element (10) comprises a body (110) defining a chamber for containing a mobile conductor (20a, 20b, 20c). The body (110) comprises at least one first face (120) comprising a first connection means, and at least one second, open face (130). Said second face (130) comprises a second connection means complementary to the first connection means in such a way as to allow the connection of the basic enclosure element (10) to a second enclosure element (10c) in a fluidically communicating manner. The invention also relates to a switchgear enclosure and to a method for mounting such an enclosure.
The invention relates to an electrical cutoff device (1), in particular a disconnecting switch, comprising two arcing electrical contacts (5a, 5b) designed to be moved from a closed position to an open position during an opening operation, by means of the relative translational movement of said arcing contacts along a central axis (19). According to the invention, the device comprises means for accelerating the mobile arcing contact (5b) during the opening operation, employing a spring (16). The device is also designed such that, following the release of energy from the spring (16) during the opening operation, if the mobile arc contact (5b) and the other mobile body (4b') do not find their pre-determined relative positions, the other body (4b') is prevented from reaching the open position by a limit stop.
H01H 31/32 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs avec contact mobile demeurant électriquement connecté à une ligne en position d'ouverture de l'interrupteur avec contact à déplacement rectiligne
H01H 33/40 - Dispositions à énergie incorporée dans l'interrupteur pour actionner le mécanisme moteur utilisant un moteur à ressort
H01H 33/12 - Contacts auxiliaires sur lesquels l'arc est transféré des contacts principaux
H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
A disconnector for high voltage, including columnar supporting elements which are electrically isolating and are adapted to support electromechanical elements of opening and closing a circuit or an electrical line. At least one columnar supporting element, which is tubular, supports an optical current transformer, the optical fiber of which, surrounded by protection elements, extends inside the tubular columnar supporting element.
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
H02J 9/00 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H01H 33/02 - Interrupteurs pour haute tension ou courant fort comportant des moyens d'extinction ou de prévention des arcs - Détails
59.
SYSTEM AND METHOD FOR EVAPORATOR OUTLET TEMPERATURE CONTROL
Exemplary embodiments are directed to systems and methods for controlling an outlet temperature of an evaporator having a plurality of evaporator tube bundles, in which a processor is configured to compute an outlet temperature setpoint for the evaporator based on outlet temperatures of each of the plurality of evaporator tube bundles. The processor also regulates fluid flow through at least one of the evaporator tube bundles to reduce deviation between the outlet temperature of the evaporator and the outlet temperature setpoint for the evaporator.
The invention relates a combined cycle power plant with a gas turbine (4), a shaft (30) connecting a compressor (1) to a turbine (3), and a first generator (22), a heat recovery steam generator (20) fluidly connected to the exhaust of the gas turbine (4), The heat recovery steam generator (20) has at least one top suspended bundle (35) with an upper manifold (24), which is connected to a supporting structure of the heat recovery boiler by a bundle suspension (28), a lower manifold (25, 26), and vertically arranged heat exchange pipes. To minimize the length of the hot steam pipes a high pressure life steam pipe is connecting the final lower superheat manifold (25) to the high pressure steam turbine (6), and/or a medium pressure hot reheat steam pipe (11) connecting the final lower reheat manifold (26) to the medium pressure steam turbine (7). Besides the power plant a method to operate such a plant is disclosed.
F22B 37/20 - Dispositifs de support, p.ex. pour la fixation des faisceaux de tubes d'eau
F22G 3/00 - SURCHAUFFE DE LA VAPEUR - Détails ou parties constitutives de ces appareils
F01K 23/10 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de combustion provenant de l'un des cycles chauffant le fluide dans un autre cycle le fluide à la sortie de l'un des cycles chauffant le fluide dans un autre cycle
The winding for an electric machine comprises transposed bars (9) having at least four stacks of strands (15). Couples of stacks of strands (15) define elementary transposed bars (16). The winding comprises at least two stacks of cooling pipes (18) in each transposed bar (9), each stack of cooling pipes (18) being arranged between two stacks of strands (15), and at least one crossover transposed bar (20) in which the sides of the elementary transposed bars (16) are exchanged.
H02K 3/14 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches avec des conducteurs transposés, p.ex. des conducteurs torsadés
H02K 3/24 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre avec des canaux ou des conduits pour un agent de refroidissement entre les conducteurs
There is disclosed a method of installing a valve module 12 of a voltage source converter, comprising constructing an insulation assembly 10 by installing a plurality of insulator posts 14, each having a support plate 22 at its upper end, and loosely connecting a plurality of insulator braces 16 between the plurality of insulator posts 14. A valve module 12, which has a plurality of feet 13, is lowered onto the insulation assembly 10 such that each foot 13 of the valve module 12 rests on a respective support plate 22. The feet 13 of the valve module 12 are secured to the respective support plates 22 and the plurality of insulator braces 16 are tensioned.
H02B 5/00 - Postes de transformation d'extérieur; Postes de transformation comportant des installations d'intérieur et d'extérieur
H01L 25/11 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs ayant des conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
63.
OBSERVER BASED MONITORING AND CONTROL OF SUBMODULES IN MODULAR MULTILEVEL CONVERTER
This application relates to control methods and apparatus for a voltage source converter (100) comprising a plurality of energy storage devices (202) which can be selectively connected into an arm (301) of the voltage source converter. The apparatus comprises a model module (304) configured to generate a modelled value of the voltage of at least one energy storage device of the voltage source converter based on one or more model parameters and the operation of the voltage source converter. The apparatus further includes a model adaptation module (305) configured to receive the modelled value (VS) and also a measured value (VCap) of the voltage of at least one energy storage device, to determine an error between said modelled value and said measured value, and to generate a model control signal (Mcon) for adapting the model based on said error so that the modelled value substantially corresponds to the measured value. Control circuitry (303) is responsive to said model module and/or said model adaptation module to control operation of the VSC.
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
The invention relates to a combined cycle system, which comprises a gas turbine, a steam turbine and a heat recovery steam generator, wherein the steam discharged from the water separation unit is routed through a high pressure outlet line to the set of super-heaters and discharged from the set of super-heaters through a main outlet line of the heat recovery steam generator to be introduced into the steam turbine, an attemperating line is connected between the high pressure outlet line and the main outlet line of the heat recovery steam generator to introduce a portion of steam that is discharged from the water separation unit into the steam discharged from the set of super-heaters, and that a control valve is disposed in the attemperating line. With the solution of the present invention, pressure difference across control valve for steam temperature remains low in low load or high load application of the combined cycle system.
F01K 23/10 - Ensembles fonctionnels caractérisés par plus d'une machine motrice fournissant de l'énergie à l'extérieur de l'ensemble, ces machines motrices étant entraînées par des fluides différents les cycles de ces machines motrices étant couplés thermiquement la chaleur de combustion provenant de l'un des cycles chauffant le fluide dans un autre cycle le fluide à la sortie de l'un des cycles chauffant le fluide dans un autre cycle
65.
DEVICE AND METHOD FOR DC/DC REVERSIBLE CONVERSION ALLOWING AN EXCHANGE OF ENERGY BETWEEN TWO DC ELECTRIC NETWORKS
The invention relates to a device and a method for reversible DC/DC conversion allowing an exchange of energy between two DC electric networks. This device is asymmetric and comprises several converter modules (70) on the high voltage side, and a converter module (71) on the low voltage side based on a current loop with several magnetic cores.
H02J 7/34 - Fonctionnement en parallèle, dans des réseaux, de batteries avec d'autres sources à courant continu, p.ex. batterie tampon
H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
Systems and methods according to these exemplary embodiments provide for methods and systems related to optical current sensors used to monitor standby power transformers, specifically fiber optical current and voltage sensors and, more particularly, to applications involving filters for use in such sensors, such as frequency tracking comb filters. According to one embodiment, a method for monitoring a connection condition of a stand by power transformer includes the steps of measuring a current flowing through a high voltage side of the standby power transformer using at least one optical current sensor disposed proximate to a current flow path of the high voltage side, using a comb filter to filter the measured current, determining whether the filtered, measured current is less than a predetermined threshold value; and generating an alarm indication that the high voltage side of the standby power transformer is unconnected.
G01R 15/24 - Adaptations fournissant une isolation en tension ou en courant, p.ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs modulateurs de lumière
G01R 19/145 - Indication de l'existence d'un courant ou d'une tension
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
This application relates to methods and apparatus for control apparatus of a voltage source converter (401 ) for direct current transmission of electrical power over a transmission line (402). The control apparatus comprises regulation control (403) for generating a regulation signal for the converter to regulate an electrical parameter of the voltage source converter, such as voltage or power, so as to regulate power transmission over the transmission line. The regulation signal is based on the difference between a measured value of said parameter and a reference value of said parameter, as may be supplied from a reference control block (404) and may be derived from a demand signal indicating the voltage or power demand. The apparatus also includes damping control (405) configured to generate a damping signal for modulating said regulation signal to reduce the effect of resonance within the bandwidth of control of the converter. The damping signal is generated as a function of a measured voltage or current of the transmission line and an impedance value for the transmission line. The damping signal may be high-pass filtered (407) so as to have no substantial impact on steady state operation.
H02J 1/02 - Dispositions pour réduire les harmoniques ou les ondulations
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
In one aspect, a breaker circuit arranged to isolate a converter (300, 400, 500) from a direct current network (204) in the event of a fault condition is described. The breaker circuit comprises an isolation element (104) such as a mechanical switch arranged, on activation, to prevent current flow between the network (204) and the converter (300, 400, 500) and an energy absorption element (1 12, 414, 556), capable of receiving energy remaining in the circuit following activation of the isolation element (104). Also provided is a commutating voltage source (106, 206, 570) arranged to provide a source of commutating voltage to divert current away from the isolation element (104) and a switchable isolation element bypass path (1 10) arranged to the receive the diverted current. At least one of the energy absorption element (1 12, 414, 556), the commutating voltage source (106, 206, 570) and the isolation element bypass path (1 10) is operable in a non-fault condition to provide a functional component of the converter. Converters and methods of operation thereof are also described.
H02H 3/087 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge pour des systèmes à courant continu
H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02H 7/125 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour redresseurs pour convertisseurs ou redresseurs statiques pour redresseurs
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
69.
METHOD OF DETECTING PARTIAL DISCHARGE IN A GAS INSULATED HIGH VOLTAGE ELECTRICAL SUBSTATION
Method of detecting partial discharge in a gas insulated electrical substation, in which: -a frequency spectrum of the signals detected by a UHF sensor internal to said substation and a frequency spectrum of the signals detected by a UHF sensor external to said substation are measured (1, 2), -an average and a variance of the frequency spectrum of the signals detected by the internal sensor are calculated (3), -said average and/or said variance are compared (4) respectively with a threshold of average and/or of variance so that, if said average and/or variance is greater than or equal to the threshold of average and/or of variance: -a density of the frequency spectrum of the signal-to-noise ratio formed (5) from the spectra of the signals detected by the internal and external sensors is calculated (6), and -an alarm signal (A) is generated if said density is greater than or equal to a density threshold.
The invention proposes a support structure (10) comprising at least one cylindrical pillar (16) with a vertical main axis, a lower end (16i) of which is connected to the ground (14) and the upper end (16s) of which is connected to a component to be supported, characterised in that the pillar (16) comprises at least one helical slot (20) coaxial to the main axis of the pillar (16).
E04B 1/98 - Protection contre d'autres agents indésirables ou dangers contre les destructions mécaniques, p.ex. par les raids aériens
E04H 9/02 - Bâtiments, groupes de bâtiments ou abris conçus pour résister à des situations extérieures anormales, p.ex. à des bombardements, à des séismes ou à des climats extrêmes, ou pour se protéger de ces situations résistant aux séismes ou à l'effondrement du sol
The invention relates to a method for protecting a converter (1) comprising at least one phase and connected to a power supply network (2), said method being characterised in that it comprises, for said at least one phase: measuring the input current (IVSC) of the converter (1), measuring the voltage (Vgrid) at the point (P) of connection to the power supply network (2), determining a maximum value and a minimum value for the output voltage of the converter according to a maximum current value and the measured current and voltage, and defining the output voltage (VVSC) of the converter (1) according to the determined maximum value and minimum value.
A circuit breaker has a stationary contact and a movable contact, and an actuator device for actuating it comprises a rigid drive shaft (8) that drives the movable contact, first resilient means for driving the movable contact, and a torsion bar (2) for driving the drive shaft, the torsion bar (2) being suitable for being deformed in twisting in order to assist the resilient means during an initial period while opening the contacts of the circuit breaker. The torsion bar (2) is housed inside the drive shaft (8). A first end (4) of the torsion bar (2) is constrained to turn with a ring (10). A second end (6) of the torsion bar (2) is constrained to turn with the drive shaft (8).
H01H 1/50 - Moyens pour accroître la pression de contact, empêcher la vibration des contacts, maintenir ensemble les contacts après l'entrée en contact, ou pour ramener les contacts à la position d'ouverture
H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
H01H 33/30 - Dispositions à énergie incorporée dans l'interrupteur pour actionner le mécanisme moteur utilisant un mécanisme de commande à fluide
H01H 33/40 - Dispositions à énergie incorporée dans l'interrupteur pour actionner le mécanisme moteur utilisant un moteur à ressort
73.
ISOLATING SWITCH WITH IMPROVED CLOSING AND OPENING POWER
The invention relates to an isolating switch comprising: a fixed arc contact (20) and a mobile arc contact (22); an isolating nozzle (24) enveloping a part of a first arc contact (20) in such a way that, when the electric arc is formed during a manoeuvre for opening or closing the isolating switch, the isolating nozzle (24) is in contact with the electric arc and undergoes an ablation by the electric arc; and a screen (25) which is mounted on the second arc contact (22), an isolating tip (25b) of the screen (25) being mounted against an end (22a) of the second arc contact (22), which is located on the side of the first arc contact, the isolating tip (25b) being arranged so as to be in contact with the electric arc and to increase the length thereof.
H01H 31/32 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs avec contact mobile demeurant électriquement connecté à une ligne en position d'ouverture de l'interrupteur avec contact à déplacement rectiligne
H01H 33/70 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc
H01H 33/88 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc l'écoulement du fluide extincteur d'arc étant produit ou augmenté par le mouvement de pistons ou d'autres organes produisant une pression
A power plant with a fossil fuel fired boiler (10), an air feed system, flue gas system and condensate system. A unitary flue gas heat exchanger (54) spans a bypass line (22) in the flue gas system and the condensate system so as to improve the thermal efficiency of the power plant while minimising complexity.
An oxy-combustion boiler unit is disclosed which includes a furnace (100) for combusting fuel and for emitting flue gas resulting from combustion. The furnace has first (100a), second (100b) and third (100c) combustion zones, and an air separation unit (106) for separating oxygen gas (118) from air and providing a first portion (119) of the separated oxygen to a first oxidant flow (115), a second portion (120) to a second oxidant flow (117), and a third portion (121) of the separated oxygen gas to the first (100a), second (100b), and third (100c) combustion zones of the furnace (100). A controller together with control valves and measuring units cause the separated oxygen gas (118) to be distributed so that the first (115) and second (117) oxygen flows have a desired oxygen content, and so that the first (100a), second (100b), and third (100c) zones of the furnace (100) receive a desired amount of oxygen based on a combustion zone stoichiometry control. The flue gas oxygen content is determined in order to control the different oxygen contents and the amount of separated oxygen gas (118) produced.
F23C 6/04 - Appareils à combustion caractérisés par la combinaison d'au moins deux chambres de combustion disposées en série
F23C 9/00 - Appareils à combustion caractérisés par des dispositions pour renvoyer les produits de combustion ou les gaz de fumée dans la chambre de combustion
F23L 7/00 - Alimentation du foyer en liquides ou gaz non combustibles autres que l'air, p.ex. oxygène, vapeur d'eau
There is provided a module (48) for use in a voltage source converter. The module (48) comprises: a sub-module including first and second switching blocks (54,56), the sub-module further including a primary energy storage device (58), the first and second switching blocks (54,56) being connected in parallel with the primary energy storage device (58) in a half-bridge arrangement, each switching block (54,56) including a primary switching element (60); a secondary switching element (62) connected to or within the sub-module; and a primary control unit (68) configured to control switching of the primary switching elements (60) so as to configure the primary switching elements (60) and primary energy storage device (58) to form a forced commutation circuit to turn off the secondary switching element (62) and thereby limit a current flowing through the module (48) or block a current from flowing through the module (48).
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
77.
GAS-INSULATED MEDIUM OR HIGH VOLTAGE ELECTRICAL APPARATUS INCLUDING CARBON DIOXIDE, OXYGEN AND HEPTAFLUOROISOBUTYRONITRILE
The present invention relates to a medium or high voltage electrical apparatus including a sealed enclosure in which electrical components and a gaseous mixture are located, which ensure the electrical insulation and/or the extinction of the electrical arcs that likely to occur in said enclosure, the gaseous mixture including heptafluoroisobutyronitrile, carbon dioxide and oxygen in small quantities. Electrical components that are covered with a solid dielectric layer of variable thickness can be located in the sealed enclosure of the electrical apparatus according to the invention.
H01B 3/56 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques gaz
H01B 3/16 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances inorganiques gaz
A voltage source converter (10) comprises a plurality of converter limbs (20,22), wherein the plurality of converter limbs (20,22) includes: at least one first converter limb (20) extending between first and second terminals (12,14) and having first and second limb portions separated by a first AC terminal (26), the first and second terminals (12,14) defining a first pair of terminals, each limb portion of the or each first converter limb (20) including a first switching block (28) for switching that limb portion into and out of circuit with the first AC terminal (26), and a second converter limb (22) extending between third and fourth terminals (16,18) and having first and second limb portions separated by a second AC terminal (30), the third and fourth terminals (16,18) defining a second pair of terminals, each limb portion of the second converter limb (22) including a second switching block (32) for switching that limb portion into and out of circuit with the second AC terminal (30), the first and third terminals (12,16) being interconnected, the second and fourth terminals (14,18) being interconnected, the first or second pair of terminals being connectable to a DC electrical network (34), each AC terminal (26,30) being connectable to an AC electrical network (36), wherein each of the first switching blocks (28) includes: a single active switching element or a plurality of series-connected active switching elements; and/or at least one module (29), the or each module (29) including at least one active switching element and at least one energy storage device, the or each active switching element and the or each energy storage device combining to selectively provide a voltage source, wherein the voltage source converter (10) further includes one or more circuit interruption devices (40), a first circuit interruption device (40) interconnecting the first and third terminals (12,16), each first switching block (28) is switchable in a normal operating mode to control the configuration of the AC voltage at the corresponding first AC terminal (26) and thereby transfer power between AC and DC electrical networks (34,36); and each of the first and second switching blocks (28,32) is switchable in a circuit interruption mode to modify the flow of current in the voltage source converter (10) in order to cause an alternating current to flow through the or each circuit interruption device (40) and thereby create a current zero in the or each circuit interruption device (40).
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
This 4.5 slots per pole and phase stator winding (20) comprises three phase windings (22, 24, 26) and is formed in a first layer (28) and a second layer (30) disposed in each slot (181-1827) of a rotor. Each phase winding (22, 24, 26) forms at least two phase belts (34) comprising several coils turns (36). Each coil turn (36) comprises a first connecting bar (42) belonging to the first layer (28) and a second connecting bar (44) belonging to the second layer (30). For at least two phase windings (22, 24, 26), some outermost connecting bar (420, 440) of a group (46, 47) of first or second connecting bars (42, 44) of at least one phase belt (32, 34) are disposed in a slot (182, 1810) which are separated from the slots (184-187,186-188) which accommodate at least two other connecting bars of the same group by one slot (183,189), which accommodates an innermost (421, 440) connecting bar of another group of first or second connecting bars of another phase belt (32; 34) of another phase winding.
H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre
H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
H02K 15/04 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques d'enroulements, avant leur montage dans les machines
80.
SINGLE-PHASE CONDUCTOR MODULE AND SINGLE-PHASE CONDUCTOR JUNCTION EQUIPPED WITH SAID MODULES
In a medium- or high-voltage gas-insulated electrical apparatus, a junction of a plurality of modules (1) containing single-phase conductors is produced, in order to thereby create a common gas compartment, by machining initially continuous projections protruding from the sides of the modules in order to open said projections, and by assembling the machined modules in pairs (11), the modules at the ends of the junction remaining intact. A single model of the modules (1) is required for the locations without a junction and with a junction; preparing the modules for the junction is simple; and the junctions are rigid and easily sealed.
This 4.5 slots per pole and phase stator winding (20) comprises three phase windings (22, 24, 26) and is formed in a first layer (28) and a second layer (30) disposed in each slot (181-1827) of a stator. Each phase winding (22, 24, 26) forms at least two phase belts (34) comprising several coils turns (36). Each coil turn (36) comprises a first connecting bar (42) belonging to the first layer (28) and a second connecting bar (44) belonging to the second layer (30). For at least two phase windings (22, 24, 26), some outermost connecting bars (420, 440) of a group (46, 47) of first or second connecting bars (42, 44) of at least one phase belt (32, 34) are disposed in slots (182, 1810) which are separated from the slots (184-187, 186-188) which accommodate at least two other connecting bars of the same group by one slot (183, 189), which accommodates an innermost (42l, 44l) connecting bar of another group of first or second connecting bars of another phase belt (32; 34) of another phase winding. A single first phase winding (22) comprises at least one phase belt (32, 34) for which, all the first (42) connecting bars are disposed in adjacent slots (1812-1816) and all the second (44) connecting bars are disposed in adjacent slots (1823-1827).
H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre
H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
H02K 15/04 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques d'enroulements, avant leur montage dans les machines
82.
INJECTOR GRID FOR HIGH AND LOW DUST ENVIRONMENT SELECTIVE CATALYTIC REDUCTION SYSTEMS
A method and an arrangement 22 for supplying and mixing a reducing agent into a flue gas FG flowing through a gas duct 14 and into a selective catalytic reduction (SCR) reactor 18 arranged downstream of the arrangement 22. The subject arrangement 22 is useful in both high and low dust environments to mitigate ash and like particulate accumulation on reducing agent nozzles 42 and to provide more uniform reducing agent flow distribution upstream of the SCR reactor 18.
Disclosed herein is a system including a selective catalytic reactor that is located downstream of a furnace that generates flue gases. The selective catalytic reactor is operative to reduce nitrogen oxides to nitrogen. A bypass line is fluid communication with the selective catalytic reactor which contacts an input line to the selective catalytic reactor. The bypass line is adapted to handle a volume of flue gases that are diverted from the selective catalytic reactor; a first control damper disposed at an inlet to the selective catalytic reactor; and a second control damper that is disposed at an inlet to the bypass line. The first control damper and the second control damper interact to divide the flue gas stream between the selective catalytic reactor and the bypass line in ratio that is effective to reduce the amount of sulfur trioxide released from the system to a desirable value.
Tool for shaping generator bars comprising at least one index tower (5) to assist in the process of shaping generator bars. Each index tower comprises: - a clamp assembly (11) with jaws (17a, 17b) configured to hold generator bars, - a first rail (10) configured to shift the clamp assembly (11) in a first direction, - a second rail (13) configured to shift the first rail (10) and the clamp assembly (11) in a second direction. The clamp assembly (11) comprises a support (18) arranged in between the first rail (10) and the jaws (17a, 17b), wherein the jaws (17a, 17b) are mounted such that they can pivot relativ to the support (18).
H02K 3/14 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches avec des conducteurs transposés, p.ex. des conducteurs torsadés
H02K 15/04 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques d'enroulements, avant leur montage dans les machines
The invention relates to a carriage cart 100, which comprises a chassis frame 110 with a front end 112 and a rear end 114; a pair of front wheels 120 mounted on the front end 112 of the chassis frame 110; a pair of rear wheels 130 mounted on the rear end 114 of the chassis frame 110; wherein each wheel comprises a lifting member 140, 170 pivotally mounted on a pivot 150, 180 at the same side of the chassis frame 110 with the wheel, wherein when the carriage cart 100 is moving in a travel direction 10 running from the rear end 114 to the front end 112 of the chassis frame 110 on a first surface 200 by rotation of the wheel in a first rotation direction, the lifting member 140 of the front wheel 120 is projected beyond the front wheel 120 in the travel direction, and wherein as the carriage cart 100 is negotiating a second surface 300 substantially perpendicular to the first surface 200, the lifting member 140 of the front wheel 120 contacts firstly the second surface 300, by which the lifting member 140 is pivoted in a second rotation direction opposite to the first rotation direction, thereby lifting the front wheel 120 off the first surface 200. The carriage cart 100 according to example embodiments of the present invention may improve the performance of obstacle overcoming for robotic system.
B62D 57/00 - Véhicules caractérisés par des moyens de propulsion ou de prise avec le sol autres que les roues ou les chenilles, seuls ou en complément aux roues ou aux chenilles
86.
METHOD AND DEVICE FOR REGULATING THE POWER SUPPLY OF A PHOTOVOLTAIC CONVERTER
Described herein is a device for regulating the power supply of a photovoltaic converter, comprising: a laser source (2), a photovoltaic converter (6), which supplies a DC/DC converter (8), means (100) for regulating the input impedance of the DC/DC converter (8) as a function of the operating voltage (Us) of the photovoltaic converter (6) and of its no-load voltage (Us0), means (42) for measuring an output voltage of the DC/DC converter (8) and for producing a laser source regulating signal (SR).
H04B 10/00 - Systèmes de transmission utilisant des ondes électromagnétiques autres que les ondes hertziennes, p.ex. les infrarouges, la lumière visible ou ultraviolette, ou utilisant des radiations corpusculaires, p.ex. les communications quantiques
G05F 1/67 - Régulation de la puissance électrique à la puissance maximale que peut fournir un générateur, p.ex. une cellule solaire
87.
METHOD, DEVICE AND COMPUTER PROGRAM FOR CONTROLLING A MECHATRONIC CIRCUIT BREAKER
The invention relates to a method for controlling a mechatronic circuit breaker (1) designed to cut an electric current flowing through an electricity transmission means, characterised in that it comprises the following steps: - acquiring a measurement of the drift (dIe (t)/dt) of the current at the input of the circuit breaker, - comparing the absolute value of the drift of the current at the input with a first predetermined threshold (S1), - controlling the triggering of the circuit breaker when the absolute value of the drift of the current at the input is greater than said first predetermined threshold (S1).
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p.ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
88.
HVDC LOAD SWITCHING SYSTEM AND METHOD OF IMPLEMENTING THIS SYSTEM
The invention relates to an HVDC load switching system comprising busbars (11, 12, 13) situated between exterior high voltage lines or cables linked to energy consumer or provider nodes, several cutoff chambers (14) ensuring the DC breaker function (15) being disposed on each busbar. This system comprises two phases consisting of a first and a second DC busbar (11, 12) of + and - polarities, a third phase consisting of an auxiliary busbar (13), and a centralized auxiliary circuit (16).
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p.ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
89.
Control circuit for DC network to maintain zero net change in energy level
There is a control circuit comprising first and second DC terminals for connection to a DC network, the first and second DC terminals having a plurality of modules and at least one energy conversion element connected in series therebetween to define a current transmission path, the plurality of modules defining a chain-link converter, each module including at least one energy storage device, the or each energy storage device being selectively removable from the current transmission path to cause a current waveform to flow from the DC network through the current transmission path and the or each energy conversion element and thereby remove energy from the DC network, the or each energy storage device being selectively removable from the current transmission path to modulate the current waveform to maintain a zero net change in energy level of the chain-link converter.
H02M 3/158 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p.ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique
H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
90.
VARIABLE WINDOW RMS BASED PROTECTION SYSTEM AND METHOD FOR AN ELECTRICAL VARIABLE SPEED DOUBLY FED INDUCTION MACHINE
A protection system for an electrical variable speed doubly fed induction machine (IM) having a stator (S) and a rotor (R), comprising: -instrument transformers (CTR1, CTR2, CTS1, CTS2, VTR1, VTR2) capable of measuring low frequency signals from the rotor and/or the stator; -a protection relay (R1, R2) configured to receive measurement values from the instrument transformers sampled at a constant sampling rate, wherein the protection relay comprises a frequency determination module for determining the frequency of the rotor or stator low frequency signals, and at least one protection module configured to implement an algorithm making use of root mean square values each calculated from a series of rotor or stator sampled measurement values within a variable size window size of which depends upon the determined frequency of the rotor or stator low frequency signals.
H02H 7/06 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour compensateurs synchrones
H02H 7/08 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour moteurs dynamo-électriques
91.
SAMPLE VALUE BASED PROTECTION SYSTEM AND METHOD FOR AN ELECTRICAL VARIABLE SPEED DOUBLY FED INDUCTION MACHINE
A protection system for an electrical variable speed doubly fed induction machine (IM) having a stator (S) and a rotor (R), comprising instrument transformers (CTR1, CTR2, CTS1, CTS2, VTR1, VTR2) and a protection relay having at least one protection module configured: - to detect faults from measurement values received from the instrument transformers, - when a fault is detected, to set a start signal and start a trip timer, - to set a trip signal when the trip timer is expired, - to pause the trip timer and to start a reset timer when detection of the fault ends, - when no new fault is detected before expiration of the reset timer, to hold the start signal and the trip signal in their current states, - when no new fault is detected at expiration of the reset timer, to reset the start signal, the trip signal and the trip timer, - when a new fault is detected before expiration of the reset timer, to stop pause of the trip timer.
H02H 7/06 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour compensateurs synchrones
H02H 7/08 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour moteurs dynamo-électriques
Circuit breaker (1) insulated by a dielectric fluid which comprises a first pair of contacts (10, 20), which can move in translation with respect to one another, an arc extinction chamber (30), a compression chamber (40) suitable for propelling a part of the dielectric fluid by piston effect into the extinction chamber (30). The circuit breaker (1) is adapted so that the dielectric fluid propelled by the compression chamber (40) is introduced into the extinction chamber (30) through an end of the first contact (10). According to one possibility of the invention, the extinction chamber is surrounded by a fixed thermal chamber perforated with orifices and thus ensuring blasting as close as possible to the arc contacts.
H01H 33/70 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc
H01H 33/88 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc l'écoulement du fluide extincteur d'arc étant produit ou augmenté par le mouvement de pistons ou d'autres organes produisant une pression
H01H 33/90 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc l'écoulement du fluide extincteur d'arc étant produit ou augmenté par le mouvement de pistons ou d'autres organes produisant une pression ce mouvement étant réalisé par ou conjointement avec le mécanisme qui actionne les contacts
93.
Device for protection against particles generated by an electric switching arc
A protection device for providing protection against the particles generated by an electric arc when a first electrically conductive part and a second electrically conductive part of an electrical connection unit are separated from each other, the protection device including at least one protection element disposed in the proximity of the place at which the first part and the second part separate in order to form a shield against the particles.
The invention relates to a high-voltage circuit breaker (1) with a removable screen (60), the circuit breaker (1) having a closed position and an open position and comprising first and second contacts (10, 20) that are translatable relative to one other, and third and fourth contacts (30, 40) that are also translatable relative to one another. The circuit breaker (1) further comprises a screen (60) arranged to be intercalated between the first and third contacts (10, 30), at least first means for rigidly connecting in terms of movement with one of the second and third contacts (20, 30) and at least second means for rigidly connecting in terms of movement suitable for rigidly connecting the screen (60) in terms of movement with one of the first and third contacts (10, 30), said second means for rigidly connecting in terms of movement inhibiting the first rigid connecting means from a predefined position of the screen (60). The second means for rigidly connecting in terms of movement comprise at least one first stop arranged on said contact (30) and a first counter-stop arranged on the screen (60).
The invention relates to a new mechatronic circuit-breaker and its associated triggering method for breaking either alternating currents or direct currents at high voltages.
H01H 73/00 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel
H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
H02H 9/00 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p.ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
A method of assembling a transformer/reactor is disclosed comprising the steps of; receiving a first coil (2) having a first coil end conductor (30); receiving a second coil (3) having a second coil end conductor (40); mounting the first coil and second coil on respective limbs of a magnetic core (4); arranging the first coil such that the first conductor projects outwardly from the first coil from a point (7) between the first and second coils; arranging the second coil such that the second conductor projects outwardly from the second coil from a point (8) between the first and second coils; and connecting the conductors to form an interconnection (5) between the coils.
H01F 27/30 - Fixation ou serrage de bobines, d'enroulements ou de parties de ceux-ci entre eux; Fixation ou montage des bobines ou enroulements sur le noyau, dans l'enveloppe ou sur un autre support
The invention relates to a multifunction device for converting power, including a first converter (2) and a second converter (3) associated with a power storage device (4) that is mounted in parallel between the two converters (2, 3), a first inductor (L1)/switch (51) assembly (5) in series, which is connected, on one side, to the first converter (2) and which is to be connected, on the other side, to a first end power source (PS1), a second inductor (L2)/switch (S2) assembly (6) in series which is connected, on one side, to the second converter (3) and which is to be connected, on the other side, to a second end power source (PS2), at least one shunt arm (7) comprising a first additional switch (S3) connected to the inductor (L1) of the first series assembly (5), and a second additional switch (S4) connected to the inductor (L2) of the second series assembly (6), the first and second additional switches (S3,S4) being connected together at a common node (N) to be connected to a terminal of a direct current (DC) power source.
H02M 1/10 - Dispositions comprenant des moyens de conversion, pour permettre l'alimentation à volonté d'une charge par des sources de puissance de nature différente, p.ex. à courant alternatif ou à courant continu
98.
METHOD FOR PRODUCING A THREE-DIMENSIONAL ARTICLE AND ARTICLE PRODUCED WITH SUCH A METHOD
The invention relates to a method for producing a three-dimensional article or at least a part of such an article made of a gamma prime (γ') precipitation hardened nickel base superalloy with a high volume fraction (>25 %) of gamma-prima phase which is a difficult to weld superalloy, or made of a cobalt base superalloy, or of a non-castable or difficult to machine metal material by means of selective laser melting (SLM), in which the article is produced by melting of layerwise deposited metal powder with a laser beam characterized in that the SLM processing parameters are selectively adjusted to locally tailor the microstructure and/or porosity of the produced article or a part of the article and therefore to optimize desired properties of the finalized article/part of the article.
In a system for effecting pressure control in a thermal power plant operated at low load connected fluidly in series, a relief conduit is disclosed herein. The relief conduit selectively transfers steam from a cold reheat conduit to the second extraction conduit. The plant further includes a boiler, a high-pressure turbine, an intermediate pressure turbine, a low pressure turbine, a main steam conduit for feeding steam from the boiler to an inlet of the high pressure turbine, a cold reheat conduit for feeding steam from an outlet of the high-pressure turbine through a reheat flow path in the boiler, and a first and second high pressure heaters. A first extraction conduit connects the cold reheat conduit to a first high pressure heater to transfer heat, and a second extraction conduit connects the intermediate pressure turbine to the second high pressure heater, to transfer heat.
F01K 7/24 - Dispositifs de commande ou de sécurité spécialement adaptés à ces turbines
F01K 7/34 - Ensembles fonctionnels de machines à vapeur caractérisés par l'emploi de types particuliers de machines motrices; Ensembles fonctionnels ou machines motrices caractérisés par un circuit de vapeur, un cycle de fonctionnement ou des phases particuliers; Dispositifs de commande spécialement adaptés à ces systèmes, cycles ou phases; Utilisation de la vapeur soutirée ou de la vapeur d'évacuation pour le réchauffage de l'eau d'alimentation les machines motrices étant du type à soutirage ou sans condensation; Utilisation de la vapeur pour le réchauffage de l'eau d'alimentation
F01K 7/40 - Emploi de plusieurs réchauffeurs d’eau d’alimentation en série
An apparatus is mountable to a duct having a cross-section, for determining parameters of a flowable medium flowing through the duct. The apparatus includes a mounting attachment having a conduit member, and at least one combination of multiple sensing members configured to the conduit member. The conduit member may be disposed entirely within the duct such that the multiple sensing members are located within the duct establishing direct contact with the flowable medium. The multiple sensing members include oxygen and temperature sensing elements respectively, to determine parameter such as oxygen level in the flowable medium, and temperature of the flowable medium. Several such apparatus may be mounted in the duct across the cross-section to define a grid to determine said parameter at various locations across the cross-section.
G01K 13/02 - Thermomètres spécialement adaptés à des fins spécifiques pour mesurer la température de fluides en mouvement ou de matériaux granulaires capables de s'écouler
G01D 21/02 - Mesure de plusieurs variables par des moyens non couverts par une seule autre sous-classe
