一起由于电流互感器二次回路两点接地导致保护装置误动事件的分析

继电保护是电力系统的重要组成部分,一方面继电保护的正确动作对保障电力系统的安全运行起着十分重要的作用,另一方面继电保护的不正确动作(包括误动和拒动)也会给电力系统造成重大的灾难。文章将介绍一起由于电流互感器二次回路两点接地导致保护装置误动的事件,供大家参考学习。

Relay protection is an important part of the power system.On the one hand,the correct action of relay protection plays a very important role in ensuring the safe operation of the power system;on the other hand,the incorrect action of relay protection(including misoperation and refusal to operate)will also cause great disaster to the power system.This paper will introduce an event of misoperation of the protection device caused by the two-point grounding of the secondary circuit of the current transformer for reference.