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1. 发明申请

US20230139907A1 SYSTEMS AND METHODS FOR IMPROVED FAULT DIAGNOSTICS OF ELECTRICAL MACHINES UNDER DYNAMIC LOAD OSCILLATIONS 有权
公开(公告)号：US20230139907A1
公开(公告)日：2023-05-04
申请号：US17452838
申请日：2021-10-29
申请人： General Electric Technology GmbH
发明人： Ali SHAHID , Sumitha MOHAN , Rupam MUKHERJEE , Arvind Kumar TIWARI , Balakrishna PAMULAPARTHY
IPC分类号： H02P29/028 , G01R31/34
摘要： Systems and methods are disclosed for improved fault diagnostics of electrical machines under dynamic load oscillations. The systems and methods may rely on one or more different algorithms for performing such fault diagnostics. One example, algorithm may involve determining a ratio of an instantaneous real power and a reactive power of the motor.

2. 发明申请

US20230048196A1 SYSTEMS AND METHODS FOR HIGH IMPEDANCE FAULT DETECTION IN ELECTRIC DISTRIBUTION SYSTEMS 有权
公开(公告)号：US20230048196A1
公开(公告)日：2023-02-16
申请号：US17403650
申请日：2021-08-16
申请人： General Electric Technology GmbH
发明人： Xiaoming LI , Hengxu HA , Ling XIANG
IPC分类号： G01R31/08 , H02H1/00 , H02H7/22 , G06N20/00
摘要： 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. The example method may also include determining, by the processor, that a high impedance fault occurs based on at least one of: the relative randomness, a comparison between the one or more scales of the wavelet transform, and the zero-crossing phase difference.

3. 发明申请

US20230038688A1 PULVERIZED SOLID FUEL NOZZLE TIP ASSEMBLY WITH CARBON TIP PORTION 有权
公开(公告)号：US20230038688A1
公开(公告)日：2023-02-09
申请号：US17392702
申请日：2021-08-03
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： KEVIN GRZEBIEN , KENNETH RICHARD SMYTH , JOHN CHILDS LEWIS
IPC分类号： B05B15/18 , B05B7/00 , B05B7/14
摘要： A pulverized solid fuel nozzle tip assembly for use with a pulverized solid fuel pipe nozzle to issue a stream of pulverized solid fuel and air to a pulverized solid fuel-fired boiler is described. The pulverized solid fuel nozzle tip assembly has an outer nozzle tip portion adapted to mount in supported relation with the pulverized solid fuel pipe nozzle, and a monolithic, ceramic, inner nozzle tip portion adapted for mounting within the outer nozzle tip portion to have secure tiltable movement. The outer nozzle has supporting surfaces that support surfaces of the inner nozzle tip portion to minimize the tilting forces transmitted to the inner nozzle tip portion during normal furnace operation, enhancing the wear resistance of the pulverized solid fuel nozzle tip assembly. The outer nozzle has an air shroud with multiple air passages to direct secondary air over an outer surface of the inner nozzle tip portion.

4. 发明申请

US20220360161A1 ELECTRICAL ASSEMBLY 有权
公开(公告)号：US20220360161A1
公开(公告)日：2022-11-10
申请号：US17741078
申请日：2022-05-10
申请人： General Electric Technology GmbH
发明人： Andrzej ADAMCZYK , Carl BARKER
IPC分类号： H02M1/00 , H02M7/217 , H02M1/08
摘要： The present disclosure an include an electrical assembly comprising a power converter having an AC side and a DC side, the AC side for connection to an AC network; at least one power transmission medium connected to the DC side of the power converter; a dynamic braking system operably connected to the or each power transmission medium, the dynamic braking system including a dynamic braking control unit programmed to selectively control activation of the dynamic braking system to carry out a dynamic braking operation; a monitoring unit for monitoring an electrical parameter of the AC network; and a processing unit programmed to determine an operating state of the AC network from the monitored electrical parameter, wherein the dynamic braking control unit is programmed to be responsive to the determined operating state of the AC network by configuring the dynamic braking system to be activatable.

5. 发明申请

US20220359138A1 GAS INSULATING DEVICE WITH ANTI-LIQUIFICATION MEANS 有权
公开(公告)号：US20220359138A1
公开(公告)日：2022-11-10
申请号：US17764944
申请日：2020-09-22
申请人： General Electric Technology GmbH
发明人： Yannick KIEFFEL , François BIQUEZ , Thomas BERTELOOT
IPC分类号： H01H33/56 , H02B13/055 , H02B13/045
摘要： A medium or high voltage electrical device and method of maintaining the composition of an insulating gas mixture in a medium or high voltage electrical device, where the device comprises a sealed chamber, said sealed chamber comprising electrical components; a gas mixture ensuring electrical insulation and/or extinguishing of electrical arcs produced in this chamber, wherein the gas mixture comprises at least one insulating gas and at least one dilution gas; and a receptacle, said receptacle comprising an opening, at least one wall, wherein at least one wall is a heatable wall, and wherein said receptacle is positioned to receive liquefied gas; the device further comprising a heating element for heating the heatable receptacle wall; and a dielectrically and thermally insulating layer located between the heatable receptacle wall and the chamber.

6. 发明授权

US11480601B2 Systems and methods to improve distance protection in transmission lines 有权
公开(公告)号：US11480601B2
公开(公告)日：2022-10-25
申请号：US16584723
申请日：2019-09-26
申请人： General Electric Technology GmbH
发明人： Hengxu Ha , Zhiying Zhang
IPC分类号： H02H7/26 , G01R31/08
摘要： Systems and methods are provided herein for improving distance protection in transmission lines. Such systems and methods may involve receiving one or more current and voltage inputs, and determining, based on the one or more current and voltage inputs, one or more current and voltage phasors, wherein the one or more current and voltage phasors are determined using a short window phasor estimation. Such systems and methods may also involve determining, within a single power cycle and based on the one or more current and voltage phasors, a fault in a transmission line. Such systems and methods may also involve sending, to a distance protection element and based on the determination that the fault exists, a signal to clear the fault in the transmission line, and clearing the fault in the transmission line.

7. 发明授权

US11474140B2 Relating to locating faults in power transmission conduits 有权
公开(公告)号：US11474140B2
公开(公告)日：2022-10-18
申请号：US16325982
申请日：2017-08-08
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： Hengxu Ha , Sankara Sri Gopola Krishna Murthi
IPC分类号： G01R31/08 , G01R19/25 , G01R31/11
摘要： In the field of fault location within a power transmission network, a method of determining a fault location in a power transmission conduit includes: (a) sampling at an original sampling frequency a signal propagating through the power transmission conduit to establish a first data set including a plurality of sampled signal characteristics; (b) interpolating the first data set to establish a second data set including an increased number of signal characteristics whereby the second data set has an equivalent sampling frequency higher than the original sampling frequency; (c) identifying a fault wave signal within the second data set; and (d) utilising the propagation characteristics of the fault wave signal to determine the origin of the fault wave signal within the power transmission conduit.

8. 发明授权

US11462377B2 Electric arc-blast nozzle made of a material comprising micro-capsules of liquid (CF3)2CFCN and a circuit breaker including such a nozzle 有权
公开(公告)号：US11462377B2
公开(公告)日：2022-10-04
申请号：US17274074
申请日：2018-09-07
申请人： General Electric Technology GmbH
发明人： Yannick Kieffel , François Biquez
IPC分类号： H01H33/70
摘要： The invention relates to an electric arc-blast nozzle (5) for a circuit breaker comprising a middle portion (7) forming a throat defining internally an axial passage (13) for interrupting an electric arc, and two end portions (9, 11) extending on either side of the middle portion (7) and being designed to receive respective arcing contacts (1) and (3) that are movable axially relative to each other.
The middle portion (7) and the two end portions (9, 11) are made of a same dielectric material obtained from a composition comprising a fluorocarbon polymer matrix, at least one inorganic filler and micro-capsules of liquid heptafluoro-iso-butyronitrile.
The invention also relates to a circuit breaker including such a nozzle (5).

9. 发明申请

US20220131365A1 ELECTRICAL ASSEMBLY 有权
公开(公告)号：US20220131365A1
公开(公告)日：2022-04-28
申请号：US17430271
申请日：2020-02-05
申请人： General Electric Technology GmbH
发明人： Colin Charnock DAVIDSON , Andrew NOLAN , Alistair John BURNETT
IPC分类号： H02H7/10 , H02J3/36 , H02M1/32 , H02M7/00 , H02H1/00 , H02M7/5387
摘要： An electrical assembly comprises a plurality of modules (36), each module (36) including at least one switching element (38) and at least one energy storage device (40), the or each switching element (38) and the or each energy storage device (40) in each module (36) arranged to be combinable to selectively provide a voltage source, wherein each module (36) includes a respective sensor (46) that is configured to monitor at least one other of the plurality of modules (36), each sensor (46) configured to selectively detect an occurrence of an operational hazard in the or each corresponding monitored module (36).

10. 发明申请

US20220102979A1 RELATING TO POWER TRANSMISSION NETWORKS 有权
公开(公告)号：US20220102979A1
公开(公告)日：2022-03-31
申请号：US17485246
申请日：2021-09-24
申请人： General Electric Technology GmbH
发明人： Guillaume DE PREVILLE , Julian FREYTES , Jiaqi LI , Marc THOUVENIN , Omar JASIM
IPC分类号： H02J3/36
摘要： In the field of high voltage direct current (HVDC) power transmission networks, there is a need for improvements to allow a single power converter to control individual AC network voltages carried by multiple AC transmission conduits to multiple AC network elements, such as respective wind parks.
A power transmission network (10; 100) comprises a power converter (12) which has first and second DC converter terminals (14, 16) that are for connection, in use, to a DC network. The power converter (12) also includes an AC converter terminal (22) which is electrically connected to a plurality of AC transmission conduits (241, 242, 24n), each of which is for connection, in use, to a respective AC network element (261, 262, 26n) that is configured to operate at a respective individual AC network voltage. The power converter (12) further includes a primary converter controller (34) which is programmed, in use, to control the transfer of power through the power converter (12) and thereby between the DC network and the plurality of AC network elements (261, 262, 26n). The primary converter controller (34) is further programmed, in use, to control each individual AC network voltage by establishing a virtual voltage which is representative of the plurality of AC network voltages and altering a single AC converter voltage produced by the power converter (12) at the AC converter terminal (22) to adjust the virtual voltage and thereby adjust each individual AC network voltage.

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