BREAKER FAILURE PROTECTION OF HVDC CIRCUIT BREAKERS
    11.
    发明申请
    BREAKER FAILURE PROTECTION OF HVDC CIRCUIT BREAKERS 有权
    断路器故障保护高压直流断路器

    公开(公告)号:US20130077204A1

    公开(公告)日:2013-03-28

    申请号:US13702333

    申请日:2010-09-13

    IPC分类号: H02H7/26

    摘要: A breaker failure protection system for a high voltage direct current, HVDC, circuit breaker is provided. The circuit breaker is arranged for interrupting a DC circuit upon reception of a trip signal. The protection system includes a current sensor, at least one inductor, and a breaker failure detection unit. 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 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: 提供高压直流,HVDC,断路器的断路器故障保护系统。 断路器被布置成在接收到跳闸信号时中断DC电路。 保护系统包括电流传感器,至少一个电感器和断路器故障检测单元。 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。 评估是基于测量的电流。 在断路器故障的情况下,通过向相邻的断路器发送跳闸信号,可以提高HVDC电网的稳定性。 此外,提供了一种用于HVDC断路器的断路器故障保护的方法。