Patents Assigned to General Electric Technology GmbH
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Patent number: 11728744Abstract: A voltage source converter having first and second DC terminals for connection to a DC network is provided. The voltage source converter includes at least one converter limb that extends between the first and second DC terminals and first and second limb portions that are separated by a respective AC terminal for connection to a corresponding phase of an AC network. Each limb portion includes a chain-link converter which is defined by a plurality of series-connected switching modules which operate in combination to provide a stepped variable voltage source. The voltage source converter includes a control apparatus configured to coordinate operation of the chain-link converters to cause an exchange of power between the DC and AC networks, evaluate the performance of one of the pluralities of series-connected switching modules, and modify the operation of the respective chain-link converter when the performance becomes degraded to a predetermined amount.Type: GrantFiled: August 19, 2019Date of Patent: August 15, 2023Assignee: General Electric Technology GmbHInventors: Pablo Ariel Briff, Huy Quoc Si Dang, Richard S. Zhang, Guillaume De Preville, Stéphane Pierre Brehaut, Omar Jasim
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Publication number: 20230253796Abstract: A converter station, for a bipole power transmission scheme, includes a first voltage source converter and a second source converter. Each converters have a first terminal as transmission conduit and a second terminal as a return conduit. The second terminal of the return conduit of the first converter is electrically connected to the first terminal of the transmission conduit of the second converter as being a same terminal. Both voltage source converters also includes at least one converter limb which extends between the first and second terminals of each converters. The or each converter limb includes first and second limb portions that are separated by a corresponding first and second AC terminal which is for connection to a respective phase of a first or second AC network.Type: ApplicationFiled: July 20, 2021Publication date: August 10, 2023Applicant: General Electric Technology GmbHInventors: Mita Babu NARAYANAN, Jorge Miguel GONCALVES
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Patent number: 11721978Abstract: There is provided a switching valve for a voltage source converter.Type: GrantFiled: September 24, 2021Date of Patent: August 8, 2023Assignee: General Electric Technology GmbHInventors: Stéphane Pierre Brehaut, Guillaume De Preville, Timothy Stott
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Patent number: 11709194Abstract: Systems, methods, and computer-readable media are disclosed for high impedance detection in electric distribution systems. An example method may include calculating, by a processor, a relative randomness of a signal, wherein the relative randomness is a derivative of a first scale wavelet transform divided by an energy of the signal. The example method may also include calculating, by the processor, one or more scales of a wavelet transform of the signal. The example method may also include calculating, by the processor, one or more energy ratios between energy of the wavelet transform in the one or more scales. The example method may also include calculating, by the processor, a zero-crossing phase difference between a third harmonic and a fundamental component of the signal.Type: GrantFiled: August 16, 2021Date of Patent: July 25, 2023Assignee: General Electric Technology GmbHInventors: Xiaoming Li, Hengxu Ha, Ling Xiang
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Patent number: 11702960Abstract: A turbine exhaust structure for an intermediate-pressure exhaust end of a high-and-intermediate-pressure (HIP) module.Type: GrantFiled: April 2, 2019Date of Patent: July 18, 2023Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventor: Frederic Santais
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Publication number: 20230221693Abstract: Systems and methods are disclosed for asset health assessment and fleet management. An example method may include classifying a first power system asset into a first sub-system and a second sub-system. The example method may also include measuring, by a processor of a protection relay and from a first power system asset, electrical, thermal, and/or mechanical data associated with the first power system asset. The example method may also include identifying a first fault feature for the first sub-system, wherein the first fault feature is influenced by load oscillations in the first power system asset. The example method may also include comparing the first fault feature to a second fault feature of a third sub-system in a second power system asset, wherein the second fault feature is the same as the first fault feature, and wherein the second fault feature is not associated with load oscillations.Type: ApplicationFiled: February 7, 2022Publication date: July 13, 2023Applicant: General Electric Technology GmbHInventors: Balakrishna PAMULAPARTHY, Mitalkumar KANABAR, Austin BYRNE, Umar Naseem KHAN
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Publication number: 20230223224Abstract: The present application concerns a 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 the enclosure, the gas mixture including heptafluoroisobutyronitrile, carbon dioxide, and a high content of oxygenType: ApplicationFiled: June 10, 2021Publication date: July 13, 2023Applicant: General Electric Technology GmbHInventors: Yannick KIEFFEL, Diana LEGUIZAMON CABRA, Louis MAKSOUD, Thomas BERTELOOT
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Publication number: 20230223865Abstract: There is provided a switching valve for a voltage source converter, the switching valve comprising a plurality of modules, each module including at least one switching element and at least one energy storage device, each switching element and each energy storage device in each module arranged to be combinable to selectively provide a voltage source, the switching valve including a regulator programmed to selectively control the switching of the switching elements to select one or more of the modules to contribute a respective voltage to a switching valve voltage, wherein the regulator is programmed to selectively regulate an energy stored in each energy storage device by controlling the switching of the switching elements to regulate a voltage of each energy storage device towards a target voltage, and the regulator is programmed to vary the target voltage of each energy storage device as a function of a number of healthy modules.Type: ApplicationFiled: January 4, 2023Publication date: July 13, 2023Applicant: General Electric Technology GmbHInventors: Omar JASIM, Colin DAVIDSON, Amit KUMAR
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Publication number: 20230223759Abstract: A bipole power transmission scheme includes a first converter station positioned in-use remote from a second converter station, and first and second transmission conduits to in-use interconnect the first converter station with the second converter station and thereby permit the first converter station to transmit power to the second converter station. The first converter station includes a first power converter, a second power converter, and a converter station controller which is programmed to selectively transition the bipole power transmission scheme into an asymmetrical monopole configuration, while maintaining the transfer of power from both the first and second power sources.Type: ApplicationFiled: May 21, 2021Publication date: July 13, 2023Applicant: General Electric Technology GmbHInventors: Mita BABU NARAYANAN, Omar JASIM, Carl BARKER
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Publication number: 20230204206Abstract: A system and method for warmkeeping a steam generator such as a sub-critical steam generator is disclosed. Water extraction piping extracts water from a component of one of the water fill circuits of the sub-critical steam generator. A deaerator heating system having an inventory tank of water mixes the extracted water with the water in the tank, and heats the mix of water to a predetermined temperature level to generate heated deaerated feedwater. Feedwater piping forwards the heated deaerated feedwater at the predetermined temperature level from the deaerator heating system to the water fill circuits of the sub-critical steam generator. The water extraction piping, the deaerator heating system and the feedwater piping operate cooperatively to warmkeep the water fill circuits in accordance with the predetermined temperature level while the sub-critical steam generator is in the unfired stand-by mode of operation.Type: ApplicationFiled: December 23, 2021Publication date: June 29, 2023Applicant: GENERAL ELECTRIC TECHNOLOGY GMBHInventor: RALPH MAYER
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Patent number: 11680757Abstract: A system and method of controlling corrosion of a heat exchanger, having a hot gas inlet and outlet and a cold side inlet and outlet. The method includes determining a temperature of the heat exchanger at a first selected location, controlling a temperature of a corrosion sensing device to a first selected temperature based on the temperature of the surface of the heat exchanger and determining a corrosion rate associated with the heat exchanger surface at the first selected location for the first selected temperature. The method also includes comparing the corrosion rate to an expected corrosion rate, determining a cold side fluid inlet temperature target for the heat exchanger based at least in part on the comparing, the determined corrosion; and controlling a cold side fluid inlet temperature based at least in part on the determined inlet temperature target, determined corrosion rate, and expected corrosion rate.Type: GrantFiled: July 9, 2020Date of Patent: June 20, 2023Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventor: Frederic Vitse
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Patent number: 11679964Abstract: A system for servicing a pulverizer includes a pulverizer having a housing, a journal assembly pivotally connected to the housing, a grinding mechanism operatively connected to the journal assembly, and an opening within the housing adjacent to the journal assembly and providing an access point to an interior of the housing, and a hoist apparatus mounted to the housing. The hoist apparatus includes a frame assembly received about the opening in the housing, a sheave assembly including a plurality of sheaves supported by the frame assembly, a motor operatively connected to one of the plurality of sheaves, and a cable received by the sheave assembly. The motor is operable to at least one of retract the cable through the sheave assembly to rotate a component out of the pulverizer through the opening and controllably let out the cable to rotate the component into the pulverizer through the opening.Type: GrantFiled: May 17, 2019Date of Patent: June 20, 2023Assignee: General Electric Technology GmbHInventor: Paul Mackenzie Colson
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Publication number: 20230188027Abstract: In the field of chain-link modules for voltage source converters, there is a need for an improved chain-link module. A chain-link module, for connection in series with other chain-link modules to form a chain-link converter selectively operable to provide a stepped variable voltage source within a voltage source converter, includes at least one pair of series-connected switching elements that are connected in parallel with a number of series-connected energy storage devices. Each energy storage device has an auxiliary power supply unit connected in parallel therewith to source energy therefrom for supply to an auxiliary chain-link module control circuit. The chain-link module also includes a modulation controller which is interconnected between each auxiliary power supply unit and the auxiliary chain-link module control circuit. The modulation controller is configured to modulate the proportion of energy supplied to the auxiliary chain-link module control circuit by each auxiliary power supply unit.Type: ApplicationFiled: December 5, 2022Publication date: June 15, 2023Applicant: General Electric Technology GmbHInventors: Patrick HORTON, Colin Chamock DAVIDSON, Adrian KEITLEY, Mikel OLALQUIAGA SAN EMETERIO
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Patent number: 11662760Abstract: The embodiments described herein provide a system including an intelligent electronic device (IED) comprising a first processor configured to communicate control commands to power equipment, receive measurements from the power equipment, use a secure wireless system to send data to an access point, wherein the data includes the measurements, and use the secure system to communicate with a management device, via the access point, to receive configuration information, command information, or any combination thereof.Type: GrantFiled: July 12, 2017Date of Patent: May 30, 2023Assignee: General Electric Technology GmbHInventors: Anca Lucia Cioraca, Daniel Thanos, Evgeny Pronin, Michael Shane Pilon
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Patent number: 11655736Abstract: A CCPP includes a gas turbine, a HRSG, a steam turbine a flash tank and first and second supply lines. The gas turbine, the HRSG and the steam turbine are interconnected to generate power. The gas turbine may include an air preheating system to preheat the air supplied in the gas turbine to enable expedite combustion therein. The flash tank is fluidically connected at a cold end of the HRSG to extract waste hot water from the cold end. Further, the first supply line is configured to interconnect the flash tank and the steam turbine to supply of flash steam to the steam turbine. Furthermore, the second supply line is configured to interconnect the flash tank and the air preheating system to supply hot flash condensate thereto.Type: GrantFiled: February 8, 2021Date of Patent: May 23, 2023Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventors: Klara Berg, Mariah Couzzi-Carneiro, Paul Drouvot, Torbjörn Stenström
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Patent number: 11652398Abstract: The present disclosure relates to a voltage source converter (VSC) (300) comprising: a first MOSFET switching element (302) including a first body diode (306); a second MOSFET switching element (304) including a second body diode (308), the second MOSFET switching element (304) being connected in series with the first MOSFET switching element (302); a protection device (318) connected in parallel with the second MOSFET switching element (304); and a controller (312), wherein the controller (312) is configured, on detection of an overcurrent event, to: switch off the first MOSFET switching element (302); and switch off the second MOSFET switching element (304), thereby forcing current flowing in the VSC (300) following the overcurrent event to flow through the second body diode (308) rather than through conducting channels of the first and second MOSFET switching elements (302, 304).Type: GrantFiled: March 5, 2019Date of Patent: May 16, 2023Assignee: General Electric Technology GmbHInventors: Colin Charnock Davidson, Francisco Javier Chivite-Zabalza, John Lewis Outram, Jerome Gregoire
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Patent number: 11650240Abstract: Systems, methods, and computer-readable media are disclosed for impedance-based broken conductor detection in electric distribution systems. Upon the detection of a broken conductor, the affected overhead line will be de-energized before it hits the ground. An example method may include determining, during a first time period, a first impedance value measured by a first IED, and may further include determining, during a second time period that after the first time period, a second impedance value measured by the first IED. The method may further include determining a first ratio based on dividing a difference between the first impedance value and the second impedance value by the first impedance value, and may further include determining that the first ratio deviates from a threshold setpoint, and determining that a broken conductor condition occurs based on the first ratio deviating from the threshold setpoint.Type: GrantFiled: March 22, 2021Date of Patent: May 16, 2023Assignee: General Electric Technology GmbHInventors: Yujie Yin, Mohammad Amin Zamani, Johannes Kruger, Hasan Bayat
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Publication number: 20230141230Abstract: In the field of chain-link converters operable to provide a stepped variable voltage source, there is a need for an improved method of operating such a chain-link converter. A method of operating a chain-link converter, the chain-link converter including a number of series connected chain-link modules, each chain-link module including at least one switching element and an energy storage device which together are selectively operable to provide a voltage source whereby the chain-link converter is able to provide a stepped variable voltage source, including the steps of: (i) identifying one or more unhealthy chain-link modules having a reduced performance characteristic compared to one or more healthy chain-link modules having a normal performance characteristic, (ii) utilizing the healthy chain-link modules normally in the operation of the chain-link converter, and (iii) reducing the utilization of the or each unhealthy chain-link module.Type: ApplicationFiled: March 31, 2021Publication date: May 11, 2023Applicant: General Electric Technology GmbHInventors: Stéphane BREHAUT, Guillaume DE PREVILLE
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Publication number: 20230140103Abstract: A bipole power transmission scheme with two independent converts, two power feed and one return conduit. During operation of the bipole power transmission scheme under abnormal conditions, when a return conduit is faulty and unable to provide a return current path, each converter controller is programmed to monitor the first power feed in the first transmission conduit and the second power feed in the second transmission conduit and, if the first power feed in the first transmission conduit and the second power feed in the second transmission conduit differ from one another, at least one converter controller modifies the power infeed from its corresponding power source to reduce the difference between the first power feed and the second power feed.Type: ApplicationFiled: March 16, 2021Publication date: May 4, 2023Applicant: General Electric Technology GmbHInventors: Mita BABU NARAYANAN, Omar JASIM
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Patent number: 11639966Abstract: Systems, methods, and computer-readable media are disclosed for enhanced electrical signature analysis (ESA) for fault detection in electrical machines. The enhanced ESA uses an algorithm that is able to adaptively learn the behavior of a particular electrical machine and automatically establish fault thresholds for the electrical machine without requiring manual inputs from an operator. The particular algorithm described herein to accomplish this may use machine learning that may be used to model the behavior of the electrical machine in real-time and based on any properties specific to the electrical machine.Type: GrantFiled: March 15, 2021Date of Patent: May 2, 2023Assignee: General Electric Technology GmbHInventors: Balakrishna Pamulaparthy, Mitalkumar Kanabar, Akilezkrishnamurthy Arthanari