一次220kV电压互感器损坏事故分析

Analysis for a 220kV Voltage Transformer Damage Accident

在电力系统运行中,导致电压互感器损坏的原因很多,介绍了一次由于电压互感器隔离刀闸操作机构不正常,缺相运行引起的2组电压互感器低压回路同时损坏的事件,从理论上对该电压互感器二次回路(the second winging of VT)损坏原因进行了分析,并提出了防范措施。

Due to there are many different problems can cause the voltage transformer to damage in power system operation,this paper introduces a damage event that the low-voltage loop of two voltage transformers failed at the same time caused by misoperation of the isolation switch and phase-deficient operation,then analysis the reasons theoretically,and finally series of preventive measures are put forward in this paper.