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公开(公告)号：US20170331281A1
公开(公告)日：2017-11-16
申请号：US15535296
申请日：2015-12-10
Applicant: General Electric Technology GmbH
Inventor： Robert Stephen WHITEHOUSE , Carl David BARKER
Abstract: A DC electrical network comprising DC terminals operatively connectable to a converter; and DC transmission paths arranged to interconnect the DC terminals, and including a DC power transmission medium and a switching apparatus. The DC network further including: an active power electronic device connected in at the DC transmission paths, the active power electronic device; a detector configured to detect faults in the DC transmission paths; and a control unit programmed to operate the active power electronic device to vary an apparent impedance of a faulty DC transmission path to force a current flowing in the faulty DC transmission path to reduce to a target current level, and operate the switching apparatus to block current from flowing in the faulty DC transmission path when the current flowing in the faulty corresponding DC transmission path is reduced to the target current level.
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公开(公告)号：US20180342871A1
公开(公告)日：2018-11-29
申请号：US15559633
申请日：2016-03-17
Applicant: General Electric Technology GmbH
Inventor： Andrzej ADAMCZYK , Carl David BARKER , Robert Stephen WHITEHOUSE
IPC: H02J3/18
Abstract: A power transmission network including: a variable power source; an AC transmission link for AC power transmission from the variable power source to at least one source side converter; at least one source side converter including: an AC connecting point operably connected to the AC transmission link; and a DC connecting point for connection to a DC transmission link; and a control system configured to operate the source side converter or at least one of the source side converters in a frequency damping mode to control an AC voltage at its AC connecting point and thereby damp at least one frequency component at its AC connecting point and/or in the AC transmission link.
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公开(公告)号：US20180241213A1
公开(公告)日：2018-08-23
申请号：US15753708
申请日：2016-08-18
Applicant: General Electric Technology GmbH
Inventor： Robin GUPTA , Robert Stephen WHITEHOUSE , Carl David BARKER
CPC classification number: H02J3/36 , H02H3/021 , H02H3/087 , H02H7/22 , H02H7/268 , H02J3/18 , H02J3/1857 , H02M1/32 , H02M7/68 , H02M2007/4835 , Y02E40/26 , Y02E60/60
Abstract: There is provided an electrical assembly for use in a power transmission network. The electrical assembly includes a converter including terminals for connection to an electrical network, where the first terminal is a DC terminal. The assembly also includes a DC power transmission medium connected to the DC terminal, and a circuit interruption device including switching element(s) and an energy absorption element, each switching element being switchable to divert a flow of current in the DC power transmission medium through the energy absorption element in order to reduce the flow of current in the DC power transmission medium; The assembly also includes a converter control unit programmed to operate the converter to control a DC voltage at the DC terminal in a leakage current reduction mode to control a voltage across the energy absorption element.
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公开(公告)号：US20210231725A1
公开(公告)日：2021-07-29
申请号：US17267841
申请日：2019-08-13
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Robert Stephen WHITEHOUSE , Rosemary KING
Abstract: There is provided an apparatus (20) for monitoring a condition of an electrical power transmission medium (22), the apparatus (20) comprising: a signal source (24) for transmitting a signal (30) to travel along the electrical power transmission medium (22); and a monitoring device (26) configured to detect one or more reflected signals (34) in the electrical power transmission medium (22), wherein the monitoring device (24) is configured to use the or each detected reflected signal (34) to determine a change in capacitance of the electrical power transmission medium (22).
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公开(公告)号：US20190305669A1
公开(公告)日：2019-10-03
申请号：US16097330
申请日：2017-04-11
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Robin GUPTA , Rosemary Louise KING , Robert Stephen WHITEHOUSE , Carl David BARKER
Abstract: A voltage source converter (VSC) includes AC terminal(s) connected to an AC network, DC terminal(s) connected to a DC network, energy storage device(s) to selectively store and release energy, and switching element(s) connected between the AC and DC terminals. Each switching element and each energy storage device arranged so that each switching element is switchable to selectively switch each energy storage device into circuit with each DC terminal. The VSC further includes a controller to switch each switching element to switch each energy storage device into circuit to use the energy stored to inject test electrical signal(s) into the DC network in response to a fault in the DC network and when the VSC is disconnected from the AC network. The controller also monitors the test electrical response of the DC network to the injection of each test electrical signal to determine characteristic(s) and/or location of the fault.
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Patent Agency Ranking
公开(公告)号：US20180115253A1
公开(公告)日：2018-04-26
申请号：US15559339
申请日：2016-03-17
Applicant: General Electric Technology GmbH
Inventor： Robert Stephen WHITEHOUSE , Robin GUPTA , Andrzej ADAMCZYK
IPC: H02M7/483
CPC classification number: H02M7/483 , H02M2001/325 , H02M2007/4835
Abstract: An assembly including a converter including first and second DC terminals connectable to the DC network and between which extends a converter limb. Each converter limb includes first and second portions separated by an AC terminal. Each portion includes a switching element for normal operation and a switching element and energy absorber for a bypass mode. The bypass mode causes current to bypass the energy absorber in the limb portion and flow through the energy absorber. The assembly also includes an AC circuit breaker which is openable to isolate the converter from the network. The electrical assembly includes a control unit that is a programmed to operate the energy absorption module within the converter in its bypass mode and following a DC fault to initiate opening of the AC circuit breaker then to operate in absorption mode to remove DC fault current within an augmented current path.
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公开(公告)号：US20220123652A1
公开(公告)日：2022-04-21
申请号：US17431414
申请日：2020-01-28
Applicant: General Electric Technology GmbH
Inventor： Hassan TAGHIZADEH , Carl David BARKER , Robert Stephen WHITEHOUSE
Abstract: There is provided a current control circuit (20) for connection between a first electrical network (42) and a converter, the current control circuit (20) comprising: first and second input terminals (24,26) for connection to the first electrical network (42); first and second output terminals (28,30) for respective connection to converter terminals (46,48) of the converter; first and second switching limbs, the first switching limb interconnecting the first input and output terminals (24,28), the second switching limb interconnecting the second input and output terminals (26,30), each switching limb including a respective switching element (32,34,36,38); a director limb (76) extending between the first and second output terminals (28,30), the director limb (76) including at least one current director element (84) and at least one first resistive element (86), the director limb (76) including an intermediate terminal (82); a second resistive element (88), a first end of the second resistive element (88) operably connected to the intermediate terminal (82), a second end of the second resistive element (88) operably connectable to ground; and a controller (96) programmed to selectively control switching of each switching element (32,34,36,38) so as to, in use, regulate a flow of current from the first electrical network (42) to the converter.
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公开(公告)号：US20210328422A1
公开(公告)日：2021-10-21
申请号：US17270369
申请日：2019-08-14
Applicant: General Electric Technology GmbH
Inventor： Carl D. BARKER , Colin Charnock DAVIDSON , John Lewis OUTRAM , Timothy James STOTT , Robert Stephen WHITEHOUSE
Abstract: The present disclosure relates to an electronic valve apparatus for a high voltage direct current, HVDC, power transmission system. The electronic valve apparatus comprises a first device chain (301) including a plurality of first devices (302, 303) connected in series between an input node (330) and an output node (332) of the electronic valve apparatus (300, 400, 500). Each of the plurality of first devices (302, 303) has an asymmetric transfer function configured substantially to block current flow through the device in a first direction, and the plurality of first devices (302, 303) are connected such that they all block current flow in the same direction. The electronic valve apparatus also includes a second device chain (311) including a plurality of second devices (312, 313) connected in series between the input node (330) and the output node (332). Each of the plurality of second devices (312, 313) has an asymmetric transfer function configured substantially to block current flow through the device in a first direction, and the plurality of second devices (312, 313) are connected such that they all block current flow in the same direction. The second device chain (311) is connected in parallel with the first device chain (301).
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公开(公告)号：US20190123562A1
公开(公告)日：2019-04-25
申请号：US15559660
申请日：2016-03-17
Applicant: General Electric Technology GmbH
CPC classification number: H02J3/36 , H02J3/386 , H02M7/17 , H02M7/493 , H02M7/7575 , Y02E10/763 , Y02E60/60
Abstract: A power transmission network, for interconnecting a variable power source and a AC electrical network including: a DC transmission link for power transmission between a network side converter and a source side converter; a AC transmission link for power transmission from the respective variable power source to a source side converter; a source side converter including: a DC connecting point operably connected to the respective transmission link; and an AC connecting point operably connected to the respective transmission link; a network side converter including: an AC connecting point for connection to the respective electrical network; and a DC connecting point operably connected to the respective transmission link; and a control system, where a network side converter is designated as a first converter, and the control system is configured to operate each first converter as a DC slack bus to vary a DC voltage at its DC connecting point.
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公开(公告)号：US20190013674A1
公开(公告)日：2019-01-10
申请号：US15748717
申请日：2016-07-28
Applicant: General Electric Technology GmbH
Inventor： Robert Stephen WHITEHOUSE , Carl David BARKER , Andrzej ADAMCZYK
CPC classification number: H02J3/36 , H01H9/548 , H01H33/596 , H02J1/08 , H02J2003/365 , Y02E60/60
Abstract: There is provided an electrical assembly for use in an electrical system. The electrical assembly comprises a DC path. The DC path includes: a DC power transmission medium; and a current commutation device, the current commutation device including a switching element and an energy absorbing element, the switching element arranged to permit a current flowing, in use, through the DC path to flow through the switching element and at the same time bypass the energy absorbing element, wherein the electrical assembly further includes a control unit programmed to selectively control the switching of the switching element to commutate the current directly from the switching element to the energy absorbing element in order to increase the resultant voltage drop caused by the flow of direct current through the DC path in which the current commutation device is connected and thereby oppose the flow of the current through the DC path.
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