电压互感器反充电的危害及其防范措施

Analysis on the Harmfulness of Reverse Charge of Voltage Transformer and its Preventive Measures

针对电力系统内出现的电压互感器反充电事件,对电压互感器反充电的危害进行分析,指出反充电会产生很大的电流和感应电压,危及设备及人身安全,又对电压互感器二次回路并列过程进行分析,指出反充电可能原因,最后从倒闸操作的顺序、检查等方面提出防止反充电措施。

In view of the reverse charge of voltage transformer occurred in the power system,this paper analyzes the harmfulness of the reverse charge of voltage transformer,and points out that reverse charge will generate a strong current and induced voltage,which will endanger the equipment and personal safety.It also analyzes the parallel process of secondary circuit of the voltage transformer,points out the possible reasons for the reverse charge,and finally puts forward preventive measures against reverse charge from the aspects of switching operation sequence and inspection.