变电站220 kV母线电压不平衡处置分析

Analysis of 220 kV bus voltage imbalance disposal in substation

从调控运行角度,对一起处理变电站220 k V母线电压不平衡,在倒母线过程中,由于间隔元件母线刀闸辅助接点切换不到位,造成母线电压互感器二次反充电的事故进行了分析。对现场操作和调度处置过程中存在的问题进行了总结,提出了一些建议,为调控运行人员处理此类事故提供了参考。

From the perspective of regulation and operation,an accident of secondary reverse charging of bus potential transformer is analyzed in dealing with the 220 k V bus voltage imbalance in a substation. In the process of reversing the bus,the secondary reverse charging of the bus potential transformer is caused by the inadequate switching of auxiliary contact of the spacing element bus. The problems existing in the field operation and dispatching disposal process are summarized,and some suggestions are put forward to provide a reference for the regulating and controlling operators to deal with such accidents.