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1. 发明申请

WO2012136241A1 FAULT HANDLING DURING CIRCUIT BREAKER MAINTENANCE IN A DOUBLE-BREAKER BUSBAR SWITCHYARD 审中-公开
标题翻译：断路器母线开关中的断路器维护期间的故障处理
公开(公告)号：WO2012136241A1
公开(公告)日：2012-10-11
申请号：PCT/EP2011/055184
申请日：2011-04-04
申请人： ABB TECHNOLOGY AG , BERGGREN, Bertil , PAN, Juiping
发明人： BERGGREN, Bertil , PAN, Juiping
IPC分类号： H02H7/26
CPC分类号： H02H7/268 , H02H7/30
摘要： A fault protection device (103) for a high voltage direct current (HVDC) double-breaker busbar unit (100) is provided. The busbar unit (100) comprises a first busbar (101), a second busbar (102), and at least three switchgear bays (110, 120, 130), each switchgear bay comprising a pair of direct current (DC) circuit breakers (112, 113, 122, 123, 132, 133) being arranged for connecting a DC circuit (111, 121, 131) to the busbars (101, 2). The device is arranged for tripping, during maintenance of any of the circuit breakers (112, 122, 132) connected to the first busbar (101), in 10 response to detecting a fault on a DC circuit (121) connected to the circuit breaker (122) under maintenance, all circuit breakers (113, 133) connected to the second busbar (102) except the circuit breaker (123) connected to the faulty DC circuit (121). An embodiment of the invention is advantageous in that the fault induced current which is to be interrupted is shared by at least two circuit breakers (113, 133). Further, a fault protection method of an HVDC double-breaker busbar unit is provided.
摘要翻译：提供了一种用于高压直流（HVDC）双断路母线单元（100）的故障保护装置（103）。母线单元（100）包括第一母线（101），第二母线（102）和至少三个开关柜（110,120,130），每个开关柜室包括一对直流（DC）断路器 112,113,122,123,132,133）被布置成用于将DC电路（111,121,131）连接到汇流排（101,2）。该装置被布置成在维护连接到第一母线（101）的任何断路器（112,122,132）的维护期间，响应于检测连接到断路器的DC电路（121）上的故障而跳闸（122），除了连接到故障DC电路（121）的断路器（123）之外的连接到第二母线（102）的所有断路器（113,133）。本发明的一个实施例的优点在于，要被中断的故障感应电流由至少两个断路器（113,133）共享。此外，还提供了HVDC双断路器母线单元的故障保护方法。

2. 发明申请

WO2011157306A1 BREAKER FAILURE PROTECTION OF HVDC CIRCUIT BREAKERS 审中-公开
标题翻译：断路器故障保护高压直流断路器
公开(公告)号：WO2011157306A1
公开(公告)日：2011-12-22
申请号：PCT/EP2010/063377
申请日：2010-09-13
申请人： ABB RESEARCH LTD , BERGGREN, Bertil , WANG, Jianping , PAN, Juiping , LINDEN, Kerstin , NUQUI, Reynaldo
发明人： BERGGREN, Bertil , WANG, Jianping , PAN, Juiping , LINDEN, Kerstin , NUQUI, Reynaldo
IPC分类号： H02H7/26 , H02H3/44 , H02H7/30
CPC分类号： H02H7/268 , H02H3/044 , H02H3/05 , H02H3/445 , H02H7/222 , H02H7/30
摘要： A breaker failure protection system (100) for a high voltage direct current, HVDC, circuit breaker (103) is provided. The circuit breaker is arranged for interrupting a DC circuit (101, 102) upon reception of a trip signal (108). The protection system comprises a current sensor (104), at least one inductor (105, 106), and a breaker failure detection unit (107). The current sensor is arranged for measuring a current I (t) through the DC circuit. The at least one inductor is connected in series with the DC circuit. The breaker failure detection unit is arranged for assessing, whether the circuit breaker has failed, and sending, if the circuit breaker has failed, a trip signal (109) to an adjacent circuit breaker. The assessment is based on the measured current. The stability of HVDC grids may be improved by sending, in case of a breaker failure, a trip signal to adjacent circuit breakers. Further, a method of breaker failure protection for an HVDC circuit breaker is provided.
摘要翻译：提供了一种用于高压直流，HVDC，断路器（103）的断路器故障保护系统（100）。断路器被布置成在接收到跳闸信号（108）时中断DC电路（101,102）。保护系统包括电流传感器（104），至少一个电感器（105,106）和断路器故障检测单元（107）。电流传感器用于测量通过直流电路的电流I（t）。至少一个电感器与DC电路串联连接。断路器故障检测单元被布置用于评估断路器是否发生故障，并且如果断路器发生故障，则发送到相邻断路器的跳闸信号（109）。评估是基于测量的电流。在断路器故障的情况下，通过发送到相邻断路器的跳闸信号，可以提高HVDC电网的稳定性。此外，还提供了一种用于HVDC断路器的断路器故障保护方法。

3. 发明申请

WO2011157305A1 FAULT PROTECTION OF HVDC TRANSMISSION LINES 审中-公开
标题翻译：高压直流输电线路的故障保护
公开(公告)号：WO2011157305A1
公开(公告)日：2011-12-22
申请号：PCT/EP2010/063372
申请日：2010-09-13
申请人： ABB RESEARCH LTD , BERGGREN, Bertil , WANG, Jianping , PAN, Juiping , SRIVASTAVA, Kailash , LINDEN, Kerstin , NUQUI, Reynaldo
发明人： BERGGREN, Bertil , WANG, Jianping , PAN, Juiping , SRIVASTAVA, Kailash , LINDEN, Kerstin , NUQUI, Reynaldo
IPC分类号： H02H7/26 , H02H3/38 , H02H3/42 , H02H3/44
CPC分类号： H02H3/42 , H02H3/38 , H02H3/445 , H02H7/268
摘要： A protection system (200) for high voltage direct current, HVDC, transmission lines is provided. The protection system comprises a direct current, DC, bus (201), means (202) for connecting an HVDC transmission line to the bus, at least one DC circuit breaker (203, 204) arranged for disconnecting the transmission line from the bus upon reception of a trip signal, current (211) and voltage sensors (212), an inductor (213) arranged such that the current through the transmission line passes the inductor, and a fault detection unit (220). The fault detection unit is arranged for assessing, on the basis of current and/or voltage measurements, whether a fault exists on the transmission line, and sending, if a fault is detected on the transmission line, a trip signal to the circuit breaker. The additional inductance limits the rise in fault current and facilitates a selective fault detection. Further, a method of fault protection for an HVDC transmission line is provided.
摘要翻译：提供用于高压直流，HVDC，传输线路的保护系统（200）。保护系统包括直流DC总线（201），用于将HVDC传输线连接到总线的装置（202），至少一个直流断路器（203,204），其布置成用于将传输线与总线断开接收跳闸信号，电流（211）和电压传感器（212），布置成使得通过传输线的电流通过电感器的电感器（213）和故障检测单元（220）。该故障检测单元被设置为基于当前和/或电压测量来评估传输线路上是否存在故障，并且如果在传输线路上检测到故障则发送到断路器的跳闸信号。附加电感限制故障电流的上升，并有助于选择性故障检测。此外，还提供了用于HVDC传输线的故障保护方法。

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