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1. 发明申请

WO2016156435A1 CONVERTERS 审中-公开
标题翻译：转换器
公开(公告)号：WO2016156435A1
公开(公告)日：2016-10-06
申请号：PCT/EP2016/056965
申请日：2016-03-30
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： GUPTA, Robin , WHITEHOUSE, Robert , BARKER, Carl
IPC分类号： H02H7/12 , H02M1/32 , H02J3/36
CPC分类号： H02H7/1216 , H02J3/36 , Y02E60/60
摘要： Converter apparatus (200) and methods of operation thereof are disclosed. In an example, a converter unit of a bipole converter apparatus (202a, 202c) comprising a neutral connection (218a, 218c) having a breaker switch (212a, 212c) is disclosed. In the event of a DC fault, the fault condition may be monitored and it is determined whether a breaker switch operation condition is met. The breaker switch is opened when the breaker switch operation condition is met. In one example, the breaker switch operation condition may comprise a current level.
摘要翻译：转换器装置（200）及其操作方法。在一个示例中，公开了一种包括具有断路器开关（212a，212c）的中立连接件（218a，218c）的双极转换器装置（202a，202c）的转换器单元。在发生直流故障的情况下，可以监视故障状况，并确定是否满足断路器开关操作条件。当断路器开关操作条件满足时，断路器开关打开。在一个示例中，断路器开关操作条件可以包括当前电平。

2. 发明申请

WO2016156416A1 CONTROL OF VOLTAGE SOURCE CONVERTERS 审中-公开
标题翻译：电压源转换器的控制
公开(公告)号：WO2016156416A1
公开(公告)日：2016-10-06
申请号：PCT/EP2016/056942
申请日：2016-03-30
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： GUPTA, Robin , BARKER, Carl , WHITEHOUSE, Robert , ADAMCYZK, Andrzej
IPC分类号： H02M1/32 , H02J3/36 , H02M7/483
CPC分类号： H02M1/32 , H02J3/36 , H02J2003/365 , H02M7/483 , H02M2001/322 , H02M2007/4835 , Y02E60/60
摘要： This application relates to methods and apparatus for controlling a fault blocking voltage source converter (VSC) apparatus, e.g. a fault blocking VSC (200, 300) with one or one more full bridge cells (204) or a combination of VSCs (1201, 1202) with fault blocking capability. In the event of a DC side interruption, such as a DC side fault, the method involves operating (403, 404) the voltage source converter apparatus after identification (401) of the need for the DC side interruption to extract at least some electrical energy from the connected DC system to the VSC. At least some of the energy extracted from the DC system may be transferred to AC system. Once sufficient energy is extracted from the DC system the VSC may be isolated from the DC system and the voltage source converter apparatus may be switched (406) to a blocked state. Thus rather than instantly switch a fault blocking VSC to the blocked state on detection of a DC side fault the VSC is continued to be operated, and in a manner to transfer at least some energy stored in the DC system to the AC system before blocking.
摘要翻译：本申请涉及用于控制故障阻塞电压源转换器（VSC）装置的方法和装置，例如，具有一个或多个全桥单元（204）的故障阻塞VSC（200,300）或具有故障阻断能力的VSC（1201,1202）的组合。在诸如DC侧故障的DC侧中断的情况下，该方法包括在需要DC侧中断的识别（401）之后操作（403,404）电压源转换器装置以提取至少一些电能从连接的直流系统到VSC。从DC系统提取的至少一些能量可以被传送到AC系统。一旦从DC系统提取足够的能量，VSC可以与DC系统隔离，并且电压源转换器装置可以被切换（406）到阻塞状态。因此，在检测到直流侧故障时，不是立即将故障阻塞VSC切换到阻塞状态，所以VSC继续被操作，并且以在阻塞之前将存储在DC系统中的至少一些能量传送到AC系统的方式。

3. 发明申请

WO2017167744A1 HIGH VOLTAGE DIRECT CURRENT SWITCHGEAR 审中-公开
标题翻译：高压直流电开关
公开(公告)号：WO2017167744A1
公开(公告)日：2017-10-05
申请号：PCT/EP2017/057306
申请日：2017-03-28
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： SONNATHI, Chandra Mohan , BARKER, Carl , GUPTA, Robin , EBOCAYUK, David
IPC分类号： H02H3/093 , H02H7/12 , H02H7/22 , H02J3/36 , H02H3/02 , H02H7/30
CPC分类号： H02H3/093 , H02H3/021 , H02H7/1203 , H02H7/222 , H02H7/30 , H02J3/36 , H02J2003/365 , Y02E60/60
摘要： The present invention provides methods (200) and devices for controlling the operation of HVDC switchgear. In the event of a particular type of fault (202), such as a single-phase-to-ground fault, the phase which experiences a zero crossing of current is identified, and an open command sent to the breaker associated with that phase (202). By opening one of the multiple AC breakers which has a zero crossing of current, the current flowing in the other phases will also have zero crossings (204). Open commands can thus be sent to the other AC breakers after a time delay, and the current flowing in all AC phases successfully stopped (200).
摘要翻译：本发明提供用于控制HVDC开关设备的操作的方法（200）和设备。如果发生特定类型的故障（202），例如单相接地故障，则识别经历电流零交叉的相位，并且向与该相位关联的断路器发送打开命令（ 202）。通过打开具有零交叉电流的多个交流断路器中的一个，流过其他相的电流也将具有零交叉（204）。因此，打开命令可以在一段时间后发送到其他AC断路器，并且所有AC阶段中流过的电流成功停止（200）。

4. 发明申请

WO2021156096A1 ELECTRICAL ASSEMBLY 审中-公开
公开(公告)号：WO2021156096A1
公开(公告)日：2021-08-12
申请号：PCT/EP2021/051681
申请日：2021-01-26
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： SONNATHI, Chandra Mohan , GINNAREDDY, Rajaseker Reddy , BARKER, Carl
IPC分类号： H02M7/12 , H02M7/757
摘要： There is provided an electrical assembly comprising: a converter (20) including a DC side and an AC side, the DC side configured for connection to a DC network (36), the AC side configured for connection to an AC network (40), the converter (20) including at least one switching element (46); a circuit interruption device (50) operably connected to the AC side of the converter (20); a DC voltage modification device operably connected to the DC side of the converter (20), the DC voltage modification device including a DC chopper; and a controller (56) configured to selectively control the or each switching element (46), the circuit interruption device (50) and the DC voltage modification device, wherein the controller (56) is configured to be responsive to a converter internal fault (22) by carrying out a fault operating mode in which the controller (56) controls: the or each switching element (46) to block the converter (20); the circuit interruption device (50) to electrically isolate the converter (20) from the AC network (40); and the DC voltage modification device to reduce or minimise a DC voltage presented by the DC network (36) to the DC side of the converter (20).

5. 发明申请

WO2018162422A1 IMPROVEMENTS IN OR RELATING TO LINE COMMUTATED CONVERTERS 审中-公开
公开(公告)号：WO2018162422A1
公开(公告)日：2018-09-13
申请号：PCT/EP2018/055365
申请日：2018-03-05
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： WHITEHOUSE, Robert , BARKER, Carl
IPC分类号： H02M7/162 , H02M1/32
摘要： In the field of line commutated converters, for use in high voltage direct current (HVDC) power transmission, a line commutated converter (10) comprises a plurality of converter limbs (12A, 12B, 12C) that extend between first and second DC terminals (16, 18). Each converter limb (12A, 12B, 12C) includes first and second limb portions (22, 24) which are separated by an AC terminal (26A, 26B, 26C). The first limb portions (22) together define a first limb portion group (28) and the second limb portions (24) together define a second limb portion group (30). Each limb portion (22, 24) includes at least one switching element (36, 36 2, 36 3, 36 4, 36, 36 6 ) that is configured to turn on and conduct current when it is forward biased and it receives a turn on signal and to naturally turn off and no longer conduct current when it is reverse biased and the current flowing through it falls to zero. The converter (10) also includes a control unit (38) which is programmed to, in use, control successive switching of the switching elements (36, 36 2, 36 3, 36 4, 36, 36 6 ) whereby a first switching element (36 ) in the first limb portion group (28) and a second switching element (36 2 ) in the second limb portion group (30) and a different converter limb (12B, 12C) to the first switching element (36 ) connect two corresponding AC terminals (26A, 26C in series between the first and second DC terminals (16, 18). The control unit (38) is further programmed to send a third switching element (36 3 ) in the first limb portion group (28) a turn on signal whereby the third switching element (36 3 ) turns on and begins to conduct current while the current flowing through the first switching element (36 ) begins to fall to zero and the first switching element (36 ) prepares to naturally turn off, and to subsequently send a fourth switching element (36 4 ) in the second limb portion group (30) and a different converter limb (12A, 12C) to the third switching element (36 3 ) a turn on signal whereby the fourth switching element turns (36 4 ) on and begins to conduct current while the current flowing through the second switching element (36 2 ) begins to fall to zero and the second switching element (36 2 ) prepares to naturally turn off. The control unit (38) also checks for an abnormal current flow (56) associated with the first switching element (36 ) during a finite monitoring period (42', 42''; 62', 62'') to establish whether correct natural turn off of the first switching element (36 ) occurs.

6. 发明申请

WO2016146341A1 START-UP OF HVDC NETWORKS 审中-公开
标题翻译： HVDC网络启动
公开(公告)号：WO2016146341A1
公开(公告)日：2016-09-22
申请号：PCT/EP2016/053610
申请日：2016-02-19
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： GUPTA, Robin , BARKER, Carl , ADAMCYZK, Andrzej
IPC分类号： H02M1/36 , H02J3/36
CPC分类号： H02J3/36 , G05F3/08 , H02M1/36 , Y02E60/60
摘要： This application describes methods and apparatus for controlling a voltage source converter (101 a) to energise a DC link (103). A voltage order generating module (300) generates a voltage order (V ORD ) for controlling the voltage source converter to generate a DC voltage on the DC link, the voltage order is based on a time varying voltage reference signal (Rv). An voltage reference module (301), which may include a ramp generator (306) generates the time varying voltage reference signal (R v ) such that the rate of change of the voltage reference signal changes over time. The rate of change of the voltage reference signal may decrease over time, to become more gradual as the nominal operating voltage is reached to avoid over-voltages.
摘要翻译：本申请描述了用于控制电压源转换器（101a）以激励DC链路（103）的方法和装置。电压指令生成模块（300）产生用于控制电压源转换器以在DC链路上产生直流电压的电压次序（VORD），该电压次序基于时变电压参考信号（Rv）。可以包括斜坡发生器（306）的电压参考模块（301）产生时变电压参考信号（Rv），使得电压参考信号的变化率随时间改变。电压参考信号的变化率随着时间的推移而减小，随着额定工作电压达到而变得更加缓慢，以避免过电压。

7. 发明申请

WO2022233702A1 ELECTRICAL ASSEMBLY 审中-公开
公开(公告)号：WO2022233702A1
公开(公告)日：2022-11-10
申请号：PCT/EP2022/061337
申请日：2022-04-28
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： ZOU, Li , ADAMCZYK, Andrzej , BARKER, Carl , FRADLEY, John
IPC分类号： H02J3/12
摘要： There is provided an electrical assembly (20) comprising: a voltage sourced converter (22) for connection to an AC network (30); a controller (40) programmed so that, responsive to detection of a fault in the AC network (30), the controller (40): obtains a first set of voltage and current measurements taken at an interface connection point (PCC) between the voltage sourced converter (22) and the AC network (30); after obtaining the first set of voltage and current measurements, change operation of the voltage sourced converter to inject a modified fault current, and then obtain a second set of voltage and current measurements taken at the interface connection point (PCC); using the first and second sets of voltage and current measurements, determine operating parameters of the voltage sourced converter (22) for injecting a target fault current having a target phase angle that is the same, or substantially the same, as a phase angle of a reference fault current that would have resulted from operation of the voltage sourced converter (22) in accordance with pre-fault steady-state voltage phase and magnitude values; and operate the voltage sourced converter (22) in accordance with the determined operating parameters so as to inject the target fault current at the target phase angle.

8. 发明申请

WO2022117489A1 IMPROVEMENTS IN OR RELATING TO POWER TRANSMISSION NETWORKS 审中-公开
公开(公告)号：WO2022117489A1
公开(公告)日：2022-06-09
申请号：PCT/EP2021/083315
申请日：2021-11-29
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： KUMAR, Amit , BARKER, Carl
IPC分类号： H02J3/06 , H02J3/36 , H02J3/38
摘要： In the field of high voltage direct current (HVDC) power transmission networks, there is a need for improved network interconnections. A network interconnection (10; 70; 80), for interconnecting a power supply network (12) with a plurality of power distribution networks, comprises a power converter station (26) that is connected in use adjacent to an end (28) of a power supply network (12) and is controllable to provide an alternating voltage source. The network interconnection (10; 70; 80) also includes an interconnection bus (36; 88) which extends from the power converter station (26) towards each of a primary point of interconnection (38) that is connected, in use, with a primary power distribution network and at least one secondary point of interconnection (40A; 40B, 40N) which is connected, in use, with a corresponding secondary power distribution network. The network interconnection (10; 70; 80) additionally includes a power regulator (46A; 46B, 46N) that is electrically connected between the interconnection bus (36; 88) and the or each secondary point of interconnection (40A; 40B, 40N), and is operable to control the flow of power from the interconnection bus (36; 88) to the corresponding secondary point of interconnection (40A; 40B, 40N). The network interconnection (10; 70; 80) further includes a power flow controller (58) that is arranged in operative communication with the power converter station (26) and the or each power regulator (46A; 46B, 46N), and is programmed to adjust the alternating voltage source provided by the power converter station (26) to control the power delivered to the primary point of interconnection (38) and to alter as needed the influence of the or each power regulator (46A; 46B, 46N) to control the power delivered to the or each corresponding secondary point of interconnection (40A; 40B, 40N).

9. 发明申请

WO2021234145A1 BIPOLE HVDC POWER TRANSMISSION SYSTEM CONFIGURABLE TO MONOPOLE OPERATION 审中-公开
公开(公告)号：WO2021234145A1
公开(公告)日：2021-11-25
申请号：PCT/EP2021/063649
申请日：2021-05-21
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： BABU NARAYANAN, Mita , JASIM, Omar Fadhel , BARKER, Carl
IPC分类号： H02J3/36
摘要： In the field of high voltage direct current (HVDC) power transmission schemes, i.e. power transmission apparatuses, within HVDC power transmission networks, there is a need for an improved bipole power transmission scheme, i.e. an improved bipole power transmission apparatus. A bipole power transmission scheme (10) comprises a first converter station (12) positioned in-use remote from a second converter station (14), and first and second transmission conduits (20, 22) to in-use interconnect the first converter station (12) with the second converter station (14) and thereby permit the first converter station (12) to transmit power to the second converter station (14). The first converter station (12) includes a first power converter (30) which electrically interconnects the first transmission conduit (20) with a first variable power source (32), and in-use transfers power from the first power source (32) into the first transmission conduit (20). The first converter station (12) also includes a second power converter (38) which electrically interconnects the second transmission conduit (22) with a second variable power source (40), and in-use transfers power from the second power source (40) into the second transmission conduit (22). The bipole power transmission scheme (10) further includes a converter station controller (46) which is programmed to selectively transition the bipole power transmission scheme (10) into an asymmetrical monopole configuration, while maintaining the transfer of power from both the first and second power sources (32, 40), by: electrically interconnecting the first and second power sources (32, 40); configuring one power converter (30, 38) connected to the transmission conduit (20, 22) intended to continue transmitting power in the monopole configuration as a master converter (70) operating in a grid-forming mode (62, 74); configuring the other power converter (30, 38) connected to the transmission conduit (20, 22) intended to cease transmitting power in the monopole configuration as a slave converter (72) operating in a grid-following mode (80); and controlling the slave converter (72) to reduce to zero the power being fed into the transmission conduit (20, 22) connected therewith.

10. 发明申请

WO2020164901A1 CURRENT CONTROL CIRCUIT 审中-公开
公开(公告)号：WO2020164901A1
公开(公告)日：2020-08-20
申请号：PCT/EP2020/051983
申请日：2020-01-28
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： TAGHIZADEH, Hassan , BARKER, Carl , WHITEHOUSE, Robert
IPC分类号： H02M3/07 , H02M1/14 , H02M1/32 , H02M1/36 , H03K3/57
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.

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