一起主变低后备疑似误动作事件综合分析

Synthetic Fault Analysis of a Relay Protection Override Trip

摘要: 本文对某变电所主变低后备动作事件进行原因查找分析，根据事故前运行方式和有关开关继电保护故障录波图，对罕见的保护装置拒动故障、线路复合故障进行了分析，重现了故障的发生、扩大过程，并提出了切实可行的解决方案和运行建议。

Abstract: In this paper the author try to find the reasons led to the relay protection override trip in 10 kV system. Analysis is conducted directing at the phenomena, relay protection diagrams and experiment data. In the end the author put forward the workable solution and suggestion.