一起500 kV隔离开关误合事件分析及优化

Analysis and Optimization of a 500 kV Isolating Switch Misconnection Event

通过对一起500 kV隔离开关在无合闸命令情况下误合的事件进行分析,从控制回路原理出发,分析隔离开关误合的原因,并针对控制回路设计缺陷提出改进措施,以避免隔离开关在无合闸命令情况下误合。

An event of 500 kV disconnector closing by mistake without closing command is analyzed.Based on the principle of control loop,the reason of the disconnector malocclusion is analyzed.Aiming at the design defects of the control circuit,the improvement measures are proposed to avoid the false closing of the disconnector without closing command.