220kV变电站全停事故分析

Analysis on 220 kV Substation Shutdown Accident

针对一起同塔并架线路遭雷击引发的220 k V变电站全停事故,阐述了事故发生的经过、起因及事故处理过程,指出了开关拒分、开关拒合、二次回路缺陷、保护拒动等多重设备缺陷导致此次事故的发生,分析了保护拒动原因,并提出了防范措施。

In this paper,through a 220 k V substation full stop accident caused by lightning,the course of events,cause and accident treatment are elucidated.Refusal operation of switch,secondary circuit defect,miss operation of line protection and other multiple equipment defects are pointed out.It analyzes the cause for the refusal protection and puts forward preventive measures according to the problems exposed.