馈线保护二次重合闸拒动分析  

Analysis of Secondary Reclosing Failure of Feeder Protection

作　　者：张敏 ZHANG Min(Guangzhou Power Supply Bureau,Guangdong Power Grid Corp.,Guangzhou 510620,China)

机构地区：[1]广东电网广州供电局,广东广州510620

出　　处：《电工技术》2020年第19期82-84,共3页Electric Engineering

摘　　要：介绍了二次重合闸的原理和整定方法,分析了一起近端故障保护二次重合闸拒动的事件,发现事件原因是弹簧储能时间与保护控制回路断线告警时间不匹配,引起重合闸瞬时放电。最后给出了解决方案,并通过试验验证了解决方案的有效性。The principle and setting method of secondary reclosing were introduced.An incident of near-end fault protection secondary reclosing failure was analyzed.It was found that the cause of the event was that the spring energy storage time did not match with the protection control circuit disconnection alarm time,which caused the reclosing instantaneous discharge.Finally,the solution was given,and the effectiveness of the solution was verified through experiments.

关 键 词：二次重合闸 储能时间 控制回路 断线 

分 类 号：TM773[电气工程—电力系统及自动化]