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1. 发明申请

US20190305669A1 VOLTAGE SOURCE CONVERTER 审中-公开
公开(公告)号：US20190305669A1
公开(公告)日：2019-10-03
申请号：US16097330
申请日：2017-04-11
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： Robin GUPTA , Rosemary Louise KING , Robert Stephen WHITEHOUSE , Carl David BARKER
IPC分类号： H02M1/32 , G01R31/11 , G01R27/18 , H02J3/36
摘要： 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.

2. 发明申请

US20170331281A1 DC ELECTRICAL NETWORK 审中-公开
公开(公告)号：US20170331281A1
公开(公告)日：2017-11-16
申请号：US15535296
申请日：2015-12-10
申请人： General Electric Technology GmbH
发明人： Robert Stephen WHITEHOUSE , Carl David BARKER
IPC分类号： H02H7/26 , H02H3/02
CPC分类号： H02H7/268 , H02H3/021 , H02H3/025 , H02H7/28
摘要： 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.

3. 发明申请

US20160380428A1 VOLTAGE LIMITER 审中-公开
标题翻译：电压限制
公开(公告)号：US20160380428A1
公开(公告)日：2016-12-29
申请号：US14902532
申请日：2014-07-10
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： Carl David BARKER , Andre Paulo CANELHAS , Andrzej ADAMCZYK
IPC分类号： H02H9/04 , H02J1/06
CPC分类号： H02H9/045 , H02H7/268 , H02H9/041 , H02J1/06
摘要： A voltage limiter includes first and second DC terminals connectable to a DC power transmission medium and ground, respectively. The voltage limiter further includes: (1) a current transmission path including two portions connected in series between the terminals and each including a non-linear resistive element; (2) a current bypass limb connected in parallel with the second portion and including at least one switching element; and (3) a control unit configured to control switching of the or each switching element to selectively switch the current bypass limb, during a fault condition, from a first mode to a second mode. In the first mode, current flows through the current bypass limb and bypasses the second current transmission path portion. In the second mode, current between the DC terminals is inhibited from flowing through the current bypass limb and thereby permits the current to flow through the second portion.
摘要翻译：电压限制器分别包括可连接到DC电力传输介质和接地的第一和第二DC端子。电压限制器还包括：（1）电流传输路径，包括串联连接在端子之间的两个部分，每个部分包括非线性电阻元件; （2）与所述第二部分并联连接并且包括至少一个开关元件的电流旁路臂; 以及（3）控制单元，被配置为控制所述或每个开关元件的切换以在故障状态期间选择性地将所述当前旁路臂从第一模式切换到第二模式。在第一模式中，电流流过电流旁路支路并绕过第二电流传输路径部分。在第二模式中，禁止DC端子之间的电流流过电流旁路臂，从而允许电流流过第二部分。

4. 发明申请

US20180342871A1 POWER TRANSMISSION NETWORK 审中-公开
公开(公告)号：US20180342871A1
公开(公告)日：2018-11-29
申请号：US15559633
申请日：2016-03-17
申请人： General Electric Technology GmbH
发明人： Andrzej ADAMCZYK , Carl David BARKER , Robert Stephen WHITEHOUSE
IPC分类号： H02J3/18
摘要： 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.

5. 发明申请

US20180241213A1 ELECTRICAL ASSEMBLY 审中-公开
公开(公告)号：US20180241213A1
公开(公告)日：2018-08-23
申请号：US15753708
申请日：2016-08-18
申请人： General Electric Technology GmbH
发明人： Robin GUPTA , Robert Stephen WHITEHOUSE , Carl David BARKER
IPC分类号： H02J3/36 , H02H7/22 , H02J3/18 , H02M7/68
CPC分类号： H02J3/36 , H02H3/021 , H02H3/087 , H02H7/22 , H02H7/268 , H02J3/18 , H02J3/1857 , H02M1/32 , H02M7/68 , H02M2007/4835 , Y02E40/26 , Y02E60/60
摘要： 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.

6. 发明申请

US20220123652A1 CURRENT CONTROL CIRCUIT 有权
公开(公告)号：US20220123652A1
公开(公告)日：2022-04-21
申请号：US17431414
申请日：2020-01-28
申请人： General Electric Technology GmbH
发明人： Hassan TAGHIZADEH , Carl David BARKER , Robert Stephen WHITEHOUSE
IPC分类号： H02M3/158 , H02M1/32 , H02M3/07 , H02M1/00
摘要： 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.

7. 发明申请

US20190123562A1 POWER TRANSMISSION NETWORK 审中-公开
公开(公告)号：US20190123562A1
公开(公告)日：2019-04-25
申请号：US15559660
申请日：2016-03-17
申请人： General Electric Technology GmbH
发明人： Andrzej Grzegorz ADAMCZYK , Carl David BARKER , Robert Stephen WHITEHOUSE
IPC分类号： H02J3/36 , H02J3/38
CPC分类号： H02J3/36 , H02J3/386 , H02M7/17 , H02M7/493 , H02M7/7575 , Y02E10/763 , Y02E60/60
摘要： 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.

8. 发明申请

US20190013674A1 ELECTRICAL ASSEMBLY 审中-公开
公开(公告)号：US20190013674A1
公开(公告)日：2019-01-10
申请号：US15748717
申请日：2016-07-28
申请人： General Electric Technology GmbH
发明人： Robert Stephen WHITEHOUSE , Carl David BARKER , Andrzej ADAMCZYK
IPC分类号： H02J3/36 , H01H33/59 , H01H9/54 , H02J1/08
CPC分类号： H02J3/36 , H01H9/548 , H01H33/596 , H02J1/08 , H02J2003/365 , Y02E60/60
摘要： 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.

9. 发明申请

US20180145499A1 BIPOLAR DC POWER TRANSMISSION SCHEME 审中-公开
公开(公告)号：US20180145499A1
公开(公告)日：2018-05-24
申请号：US15570161
申请日：2016-04-27
申请人： General Electric Technology GmbH
发明人： Robin GUPTA , Robert Stephen WHITEHOUSE , Carl David BARKER , Andrzej ADAMCZYK
IPC分类号： H02H3/16 , H02H1/00 , H02H7/26 , H02J3/36 , G01R19/12
CPC分类号： H02H3/16 , G01R19/12 , H02H1/0007 , H02H3/063 , H02H7/265 , H02H7/268 , H02J3/36 , H02M5/458 , H02M7/7575 , H02M2007/4835 , Y02E60/60
摘要： A bipolar DC power transmission scheme including first and second DC poles, each including a respective DC power transmission medium extending between first and second ends; a plurality of converters wherein each end of the transmission medium of each of the poles is operatively connected to at least one of the converters to form a rectifier and an inverter at opposite ends of the DC power transmission media; and a controller to operate at least one converter of one of the rectifier and inverter in a control mode and at least one converter of the other of the rectifier and inverter in a second control mode in response to a fault occurring on either of the poles. Additionally, the first control mode decreases and the second control mode increases the operating DC voltage of the or each corresponding converter from a normal operating voltage value.

10. 发明申请

US20180097365A1 POWER TRANSMISSION NETWORK 审中-公开
公开(公告)号：US20180097365A1
公开(公告)日：2018-04-05
申请号：US15559538
申请日：2016-03-17
申请人： General Electric Technology GmbH
发明人： Andrzej ADAMCZYK , Carl David BARKER , Robert Stephen WHITEHOUSE
IPC分类号： H02J3/36 , H02J3/38 , H02M1/32 , H02M7/757
CPC分类号： H02M7/7575 , H02J3/36 , H02J3/386 , H02M1/32 , Y02E10/763 , Y02E60/60
摘要： A power transmission network comprises, an AC electrical system AC transmission link from the AC electrical system to at least one AC-DC converter which includes: an AC connecting point 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 each AC-DC converter in an AC voltage control mode as an AC slack bus to control a magnitude and/or a frequency of an AC voltage of the AC transmission link at a or a respective steady-state value and facilitating a power transfer between its connecting points to accommodate power generated or supplied to the AC electrical system. The control system is further configured to operate each first AC-DC converter in a protection mode to protect each AC-DC converter from an overvoltage and/or an overcurrent.

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