电力系统自动化
電力繫統自動化
전력계통자동화
AUTOMATION OF ELECTRIC POWER SYSTEMS
2012年
24期
89-92
,共4页
压力低闭锁回路%高压断路器%分合闸闭锁%可靠性
壓力低閉鎖迴路%高壓斷路器%分閤閘閉鎖%可靠性
압력저폐쇄회로%고압단로기%분합갑폐쇄%가고성
low pressure block loop%high voltage circuit breaker%opening and closing block%reliability
针对目前SF。断路器的气体压力低闭锁回路由于使用了中间继电器，有可能因中间继电器故障而无法闭锁分合闸回路或不能及时发闭锁信号的问题，文中通过分析几种典型的断路器设备厂家在压力低闭锁回路设计方案上存在的利弊，提出了将中间继电器闭锁回路的单动断触点改为双动断触点串联，以及将发信回路的单动合触点改为双动合触点并联等改进方法，简单、有效地解决了压力低闭锁及发信回路存在的可靠性低问题。
針對目前SF。斷路器的氣體壓力低閉鎖迴路由于使用瞭中間繼電器，有可能因中間繼電器故障而無法閉鎖分閤閘迴路或不能及時髮閉鎖信號的問題，文中通過分析幾種典型的斷路器設備廠傢在壓力低閉鎖迴路設計方案上存在的利弊，提齣瞭將中間繼電器閉鎖迴路的單動斷觸點改為雙動斷觸點串聯，以及將髮信迴路的單動閤觸點改為雙動閤觸點併聯等改進方法，簡單、有效地解決瞭壓力低閉鎖及髮信迴路存在的可靠性低問題。
침대목전SF。단로기적기체압력저폐쇄회로유우사용료중간계전기，유가능인중간계전기고장이무법폐쇄분합갑회로혹불능급시발폐쇄신호적문제，문중통과분석궤충전형적단로기설비엄가재압력저폐쇄회로설계방안상존재적리폐，제출료장중간계전기폐쇄회로적단동단촉점개위쌍동단촉점천련，이급장발신회로적단동합촉점개위쌍동합촉점병련등개진방법，간단、유효지해결료압력저폐쇄급발신회로존재적가고성저문제。
Due to use of the intermediate relay in existing SF6 circuit breakers' gas low pressure block loop, there may not block the closes opening and closing loop caused by fault of intermediate relay or can not send out block signal immediately. In view of this problem, by comparing several typical circuit breaker manufacturers' design advantages and disadvantages in the low pressure block loop, some improved methods are introduced, such as changing the block loop's single normally-closed contact of intermediate relays to two normally-closed contacts, changing the block signal' s single normally-open contact to parallel two normally-open contacts, etc. The low pressure block and low reliability of signal-sending loop have been simply and effectively solved.
