The apparatus can be used for detecting a liquid contaminant in a rotating cavity of an electric machine. The apparatus can have a magnetic field source mounted to a non-rotary base and transmitting a magnetic field across a gap between the base a housing of the cavity, an interrogation circuit having a coil magnetically coupled to the magnetic field source across the gap via the magnetic field, and a distal circuit portion having electrical contacts separated by a spacing fluidly communicating with the cavity; and a detection circuit mounted to the base and having a coil magnetically coupled to the magnetic field and a detector detecting a variation occurring in the detection circuit upon change of a permittivity of the liquid across the spacing, the variation being indicative of the liquid contaminant.
H02K 7/18 - Structural association of electric generators with mechanical driving motors, e.g.with turbines
H02K 11/20 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
F03B 13/10 - Submerged units incorporating electric generators or motors
The method can include building a current local state for the managed devices including retrieving from the managed devices, via a local network, a plurality of current states of corresponding managed devices, and integrating the plurality of current states into the current local state; retrieving, from a remote computer, via a telecommunications network, a target local state for the managed devices; computing a difference between the target local state and the current local state; computing actions based on the difference between the target local state and the current local state, said actions to be executed by the managed devices for bringing the current local state into compliance with the target local state; and communicating the actions to the managed devices, via the local network, for execution.
The method can include computing actions corresponding to the difference between a current local state of the managed devices and a target local state for the managed devices, said actions to be executed by the managed devices for bringing the current local state into compliance with the target local state; communicating the actions to the managed devices, via the local network, for execution; subsequently to said communicating instructions, monitoring current states of the managed devices, including detecting a change in the current states of the managed devices, the change reflecting the execution of at least one of the actions at the managed devices, and updating the current local state to reflect the change; computing updated actions corresponding to an updated difference between the current local state and the target local state, following said updating, said at least one executed action being absent from the updated actions; communicate the updated actions to the managed devices, via the local network.
The method can include building a current local state for the managed devices including retrieving from the managed devices, via a local network, a plurality of current states of corresponding managed devices, and integrating the plurality of current states into the current local state; retrieving, from a remote computer, via a telecommunications network, a target local state for the managed devices; computing a difference between the target local state and the current local state; computing actions based on the difference between the target local state and the current local state, said actions to be executed by the managed devices for bringing the current local state into compliance with the target local state; and communicating the actions to the managed devices, via the local network, for execution.
The method can include computing actions corresponding to the difference between a current local state of the managed devices and a target local state for the managed devices, said actions to be executed by the managed devices for bringing the current local state into compliance with the target local state; communicating the actions to the managed devices, via the local network, for execution; subsequently to said communicating instructions, monitoring current states of the managed devices, including detecting a change in the current states of the managed devices, the change reflecting the execution of at least one of the actions at the managed devices, and updating the current local state to reflect the change; computing updated actions corresponding to an updated difference between the current local state and the target local state, following said updating, said at least one executed action being absent from the updated actions; communicate the updated actions to the managed devices, via the local network.
The method can include computing actions corresponding to the difference between a current local state of the managed devices and a target local state for the managed devices, said actions to be executed by the managed devices for bringing the current local state into compliance with the target local state; communicating the actions to the managed devices, via the local network, for execution; subsequently to said communicating instructions, monitoring current states of the managed devices, including detecting a change in the current states of the managed devices, the change reflecting the execution of at least one of the actions at the managed devices, and updating the current local state to reflect the change; computing updated actions corresponding to an updated difference between the current local state and the target local state, following said updating, said at least one executed action being absent from the updated actions; communicate the updated actions to the managed devices, via the local network.
H02K 7/18 - Structural association of electric generators with mechanical driving motors, e.g.with turbines
H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
7.
SYSTEM AND METHOD FOR MANAGING MONITORING EQUIPMENT OF A LARGE ELECTRIC MACHINE
The method can include building a current local state for the managed devices including retrieving from the managed devices, via a local network, a plurality of current states of corresponding managed devices, and integrating the plurality of current states into the current local state; retrieving, from a remote computer, via a telecommunications network, a target local state for the managed devices; computing a difference between the target local state and the current local state; computing actions based on the difference between the target local state and the current local state, said actions to be executed by the managed devices for bringing the current local state into compliance with the target local state; and communicating the actions to the managed devices, via the local network, for execution.
The apparatus can be used for detecting a liquid contaminant in a rotating cavity of an electric machine. The apparatus can have a magnetic field source mounted to a non-rotary base and transmitting a magnetic field across a gap between the base a housing of the cavity, an interrogation circuit having a coil magnetically coupled to the magnetic field source across the gap via the magnetic field, and a distal circuit portion having electrical contacts separated by a spacing fluidly communicating with the cavity; and a detection circuit mounted to the base and having a coil magnetically coupled to the magnetic field and a detector detecting a variation occurring in the detection circuit upon change of a permittivity of the liquid across the spacing, the variation being indicative of the liquid contaminant.
G01N 27/02 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
F03B 13/10 - Submerged units incorporating electric generators or motors
G01N 27/76 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables of fluids by investigating susceptibility
H02K 11/20 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
G01M 3/40 - Investigating fluid tightness of structures by using electric means, e.g. by observing electric discharges
9.
APPARATUS AND METHOD FOR DETECTING A LIQUID CONTAMINANT IN A ROTATING CAVITY OF AN ELECTRIC MACHINE
The apparatus can be used for detecting a liquid contaminant in a rotating cavity of an electric machine. The apparatus can have a magnetic field source mounted to a non-rotary base and transmitting a magnetic field across a gap between the base a housing of the cavity, an interrogation circuit having a coil magnetically coupled to the magnetic field source across the gap via the magnetic field, and a distal circuit portion having electrical contacts separated by a spacing fluidly communicating with the cavity; and a detection circuit mounted to the base and having a coil magnetically coupled to the magnetic field and a detector detecting a variation occurring in the detection circuit upon change of a permittivity of the liquid across the spacing, the variation being indicative of the liquid contaminant.
G01N 27/02 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
H02K 11/20 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
F03B 13/10 - Submerged units incorporating electric generators or motors
G01M 3/40 - Investigating fluid tightness of structures by using electric means, e.g. by observing electric discharges
G01N 27/76 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables of fluids by investigating susceptibility
The rotary machine has a rotor and a stator, a plurality of sensors configured to provide a signal indicative of an air gap configuration between the stator and the rotor, at least one of the rotor and the stator being supported via at least one actuator capable of moving a corresponding portion of the rotary machine relative to a ground reference, a computer configured to receive the signal from the plurality of sensors, determines a defect in the air gap configuration based on said signal, and controls the at least one actuator to correct the defect in the air gap configuration, during operation of the rotary machine, while the rotor rotates.
The capacitive sensor can have a sensing body having two flat conductor elements positioned parallel to one another and held spaced apart from one another, and having a thickness normal to the flat conductor elements, the sensing body having at least one aperture formed across its thickness. The capacitive sensor can be used to measure an air gap between a stator and rotor of a rotary electric machine, and the presence of the apertures can facilitate ventilation and/or improve linearization process of capacitive sensor through redistribution of its current vs distance signal along the measuring range, thus potentially increasing signal to noise ratio where it is the challenging to do so.
G01R 27/26 - Measuring inductance or capacitanceMeasuring quality factor, e.g. by using the resonance methodMeasuring loss factorMeasuring dielectric constants
G01N 27/22 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
G01D 5/24 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
The capacitive sensor can have a sensing body having two flat conductor elements positioned parallel to one another and held spaced apart from one another, and having a thickness normal to the flat conductor elements, the sensing body having at least one aperture formed across its thickness. The capacitive sensor can be used to measure an air gap between a stator and rotor of a rotary electric machine, and the presence of the apertures can facilitate ventilation and/or improve linearization process of capacitive sensor through redistribution of its current vs distance signal along the measuring range, thus potentially increasing signal to noise ratio where it is the challenging to do so.
G01D 5/24 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
H02K 11/20 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
42 - Scientific, technological and industrial services, research and design
Goods & Services
Design of equipment for measuring, control and monitoring of the behavior and condition of industrial machines in the energy and mining industries; engineering services related to equipment for measuring, control and monitoring of the behavior and condition of industrial machines in the energy and mining industries; product failure analysis services, namely, results interpretation related to equipment for measuring, control and monitoring of the behavior and condition of industrial machines in the energy and mining industries
14.
Method of monitoring partial discharges in a high voltage electric machine, and connection cable therefore
Partial discharges in a high voltage electric machine can be monitored by a partial discharge monitor connected to the high voltage electric machine successively via a capacitive coupler and a connection cable. The connection cable can have a conductive element designed to self-destruct in the presence of electric current amplitude significantly exceeding expected current amplitudes from said partial discharges, and having diameter designed to avoid creation of additional partial discharges within the cable itself. The connection cable can be light enough to avoid adding excessive weight to the stator windings.
G03G 15/02 - Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitisingCorona discharge devices
H02K 3/40 - Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges
Partial discharges in a high voltage electric machine can be monitored by a partial discharge monitor connected to the high voltage electric machine successively via a capacitive coupler and a connection cable. The connection cable can have a conductive element designed to self-destruct in the presence of electric current amplitude significantly exceeding expected current amplitudes from said partial discharges, and having diameter designed to avoid creation of additional partial discharges within the cable itself. The connection cable can be light enough to avoid adding excessive weight to the stator windings.
The method includes receiving a real-time signal containing information pertaining to amplitude and frequency of vibrations of a machine component over a frequency spectrum including a first analysis bandwidth and a second analysis bandwidth, and using the real-time signal to determine values indicative of the severity of vibrations occurring at frequencies in the first analysis bandwidth in a first unit of one of displacement, velocity, and acceleration, and determine values indicative of the severity of vibrations occurring at frequencies in the second analysis bandwidth in a second unit of one of displacement, velocity and acceleration, the second unit being different from the first unit; and associating the determined values in a common unit representing comparable severity of vibrations in the first analysis bandwidth and the second analysis bandwidth.
The method includes receiving a real-time signal containing information pertaining to amplitude and frequency of vibrations of a machine component over a frequency spectrum including a first analysis bandwidth and a second analysis bandwidth, and using the real- time signal to determine values indicative of the severity of vibrations occurring at frequencies in the first analysis bandwidth in a first unit of one of displacement, velocity, and acceleration, and determine values indicative of the severity of vibrations occurring at frequencies in the second analysis bandwidth in a second unit of one of displacement, velocity and acceleration, the second unit being different from the first unit; and associating the determined values in a common unit representing comparable severity of vibrations in the first analysis bandwidth and the second analysis bandwidth.
The method includes receiving a real-time signal containing information pertaining to amplitude and frequency of vibrations of a machine component over a frequency spectrum including a first analysis bandwidth and a second analysis bandwidth, and using the real-time signal to determine values indicative of the severity of vibrations occurring at frequencies in the first analysis bandwidth in a first unit of one of displacement, velocity, and acceleration, and determine values indicative of the severity of vibrations occurring at frequencies in the second analysis bandwidth in a second unit of one of displacement, velocity and acceleration, the second unit being different from the first unit; and associating the determined values in a common unit representing comparable severity of vibrations in the first analysis bandwidth and the second analysis bandwidth.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Système de mesure et de surveillance de la température pour les appareils électriques à haute tension, génératrices, gros moteurs, équipements rotatifs ou autre équipement électrique ou de transmission électrique, lequel est composé de sondes, de câbles et d'un logiciel permettant la cartographie thermique du noyau statorique, de l'enroulement statorique et des pôles du rotor.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Système de mesure et de surveillance de vibrations utilisé dans les machines hydroélectriques, turboélectriques, gros moteurs électriques industriels et équipements rotatifs de grande dimension nommément sondes de proximité, accéléromètres et vélocimètres, module de linéarisation de signal, unité programmable de surveillance de vibration, de protection et logiciel permettant l'analyse de signaux et les diagnostics.
A temperature sensor, capable of operating in electromagnetic and/or electric environments such as electrical generators, motors and transformers and/or in environments where vibratory conditions are frequent or continuous, contains at least one light emitting optic fiber and one light receiving optic fiber and an electrically non- conductive dilatable object which variably occults the emitted light as the object's temperature varies. The light receiving optic fiber transmits light intensity and light intensity changes to an electronic device that may include a photometer and light-to- temperature computing equipment.
A temperature sensor, capable of operating in electromagnetic and/or electric environments such as electrical generators, motors and transformers and/or in environments where vibratory conditions are frequent or continuous, contains at least one light emitting optic fiber and one light receiving optic fiber and an electrically non-conductive dilatable object which variably occults the emitted light as the object's temperature varies. The light receiving optic fiber transmits light intensity and light intensity changes to an electronic device that may include a photometer and light-to-temperature computing equipment.
A method for non-intrusive determination of an internal temperature of a given area of an electrical machine stator, comprises obtaining a temperature gradient between an internal wall of the stator and an external wall of the stator, obtaining temperature measurements at locations on the external wall of the stator, and using the temperature gradient and the external temperature measurements to extrapolate corresponding internal temperatures of the stator.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Apparatus comprised of electronic and software components for monitoring the dynamic air gap in hydro-electric generators, as well as other large rotating machines and also for monitoring the height, alignment and lateral position of linear motors and the vehicles propelled by same. Apparatus comprised of electronic and software components for the monitoring of any data relating to the performance of large generators and other rotating machines without requiring the stoppage of same. Measuring and monitoring systems suited for the harsh environment inside turbogenerating machines, namely: monitors true vibration without electrical runout and other interference; measures end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; Monitors on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measures magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Inhibits alarm feature during machine transitory operating conditions to prevent false alarms and unnecessary shutdowns; Detects rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown, and to warn of undesired movement during maintenance; Measures axial displacement of turbogenerator shaft; Miscellaneous applications of capacitive technology to measure displacement, proximity, position, or air gap. Measuring and monitoring systems for hydroelectric turbine-generator sets, namely: Monitors true vibration without electrical runout and other interference; Monitor on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measures end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; Measures magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Thermal mapping of stator core, stator windings and rotor poles; Alerts of a breakage and identifies the defective shear pin in the wicket gate operating mechanism of hydrogenerators; Detects rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown, and to warn of undesired movement during maintenance; Tests the static tightness of every stator wedge with a robot tool.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Apparatus comprised of electronic and software components for monitoring the dynamic air gap in hydro-electric generators, as well as other large rotating machines and also for monitoring the height, alignment and lateral position of linear motors and the vehicles propelled by same. Apparatus comprised of electronic and software components for the monitoring of any data relating to the performance of large generators and other rotating machines without requiring the stoppage of same. Measuring and monitoring systems suited for the harsh environment inside turbogenerating machines, namely: monitors true vibration without electrical runout and other interference; measures end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; Monitors on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measures magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Inhibits alarm feature during machine transitory operating conditions to prevent false alarms and unnecessary shutdowns; Detects rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown, and to warn of undesired movement during maintenance; Measures axial displacement of turbogenerator shaft; Miscellaneous applications of capacitive technology to measure displacement, proximity, position, or air gap. Measuring and monitoring systems for hydroelectric turbine-generator sets, namely: Monitors true vibration without electrical runout and other interference; Monitor on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measures end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; Measures magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Thermal mapping of stator core, stator windings and rotor poles; Alerts of a breakage and identifies the defective shear pin in the wicket gate operating mechanism of hydrogenerators; Detects rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown, and to warn of undesired movement during maintenance; Tests the static tightness of every stator wedge with a robot tool. (1) Design and engineering of monitoring systems for the measuring, control and monitoring of the behavior and condition of hydroelectric generators, turboelectric generators, and mining machines; results interpretation, namely, product failure analysis services for hydroelectric generators, turboelectric generators, and mining machines.
09 - Scientific and electric apparatus and instruments
Goods & Services
Apparatus comprised of electronic and software components for monitoring the dynamic air gap in hydro-electric generators, as well as other large rotating machines and also for monitoring the height, alignment and lateral position of linear motors and the vehicles propelled by same; Apparatus comprised of electronic and software components for the monitoring of any data relating to the performance of large generators and other rotating machines without requiring the stoppage of same; Measuring and monitoring instruments suited for the harsh environment inside turbo generating machines that monitor true vibration without electrical run out and other interference, measures end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; electronic monitors for on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measuring instruments to determine the magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Alarms for the detection of any excessive value from the monitored parameters; Alarm inhibitor for use during machine transitory operating condition to prevent false alarms and unnecessary shutdowns; Detectors for rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown and to warn of undesired movement during maintenance; Measuring instruments for axial displacement of turbo generator shaft; Measuring instrumentation and apparatus for miscellaneous applications of capacitive technology to measure displacement, proximity, position, or air gap in rotating machine that can show magnetic disturbances when the vibration is monitored using magnetic base sensors such as Eddy current probes; Measuring and monitoring systems for hydroelectric turbine-generator sets, namely, electronic monitors to measure the true vibration without electrical run out and other interference; electronic monitors of on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measuring instruments for end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; Measuring instruments for magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Electronic products for the generation of thermal maps of stator core, stator windings and rotor poles of a generator of electricity or motor; Alarms for detecting a breakage and identifying the defective shear pin in the wicket gate operating mechanism of hydro generators; Detectors for rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown, and to warn of undesired movement during maintenance on the machines; Measuring instruments for testing the static tightness of every stator wedge with a robot tool in large electrical generators or motors
09 - Scientific and electric apparatus and instruments
Goods & Services
Apparatus comprised of electronic and software components for monitoring the dynamic air gap in hydro-electric generators, as well as other large rotating machines and also for monitoring the height, alignment and lateral position of linear motors and the vehicles propelled by same; Apparatus comprised of electronic and software components for the monitoring of any data relating to the performance of large generators and other rotating machines without requiring the stoppage of same; Measuring and monitoring instruments suited for the harsh environment inside turbo generating machines that monitor true vibration without electrical run out and other interference, measures end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; electronic monitors for on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measuring instruments to determine the magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Alarms for the detection of any excessive value from the monitored parameters; Alarm inhibitor for use during machine transitory operating condition to prevent false alarms and unnecessary shutdowns; Detectors for rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown and to warn of undesired movement during maintenance; Measuring instruments for axial displacement of turbo generator shaft; Measuring instrumentation and apparatus for miscellaneous applications of capacitive technology to measure displacement, proximity, position, or air gap in rotating machine that can show magnetic disturbances when the vibration is monitored using magnetic base sensors such as Eddy current probes; Measuring and monitoring systems for hydroelectric turbine-generator sets, namely, electronic monitors to measure the true vibration without electrical run out and other interference; electronic monitors of on-line stator bar vibration to determine wedge tightness and winding insulation condition; Measuring instruments for end-winding vibration to assess bracing condition, or for any application in high voltage or explosive environments; Measuring instruments for magnetic flux emanating from rotor poles of generators to detect and diagnose any magnetic field imbalances; Electronic products for the generation of thermal maps of stator core, stator windings and rotor poles of a generator of electricity or motor; Alarms for detecting a breakage and identifying the defective shear pin in the wicket gate operating mechanism of hydro generators; Detectors for rotor movement in order to display rotational speed, to notify when it reaches standstill during shutdown, and to warn of undesired movement during maintenance on the machines; Measuring instruments for testing the static tightness of every stator wedge with a robot tool in large electrical generators or motors
28.
NON-INTRUSIVE METHOD FOR EXTRAPOLATING AN INTERNAL STATOR TEMPERATURE
A method for non-intrusive determination of an internal temperature of a given area of an electrical machine stator, comprises obtaining a temperature gradient between an internal wall of the stator and an external wall of the stator, obtaining temperature measurements at locations on the external wall of the stator, and using the temperature gradient and the external temperature measurements to extrapolate corresponding internal temperatures of the stator.
G01K 3/14 - Thermometers giving results other than momentary value of temperature giving differences of valuesThermometers giving results other than momentary value of temperature giving differentiated values in respect of space
09 - Scientific and electric apparatus and instruments
Goods & Services
apparatus comprised of electronic and software components for the monitoring of any data relating to the performance of large generators and other rotating machines without requiring the stoppage of same
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Apparatus comprised of electronic and software components for the monitoring of any data relating to the performance of large generators and other rotating machines without requiring the stoppage of same.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Apparatus comprised of electronic and software components for monitoring the dynamic air gap in hydro-electric generators, as well as other large rotating machines and also for monitoring the height, alignment and lateral position of linear motors and the vehicles propelled by same.
