一起220 kV母线二次反充电导致电压切换装置元件烧毁的事件分析及防范措施

Analysis and Precautionary Measures of a 220 kV Busbar Secondary Reverse Charging Caused the Burning of Voltage Switching Device Components

通过对一起220 kV母线反充电引起的电压切换装置元件烧毁事件的分析,得出电压切换双位置继电器没有返回导致两条母线二次并列是引起此次事件的直接原因,并提出了相应的防范措施。

Through the analysis of a 220 kV bus reverse charging caused by the voltage switching device component burnout event,it is concluded that the voltage switching double position relay did not return and the two buses are paralleled twice as the direct cause of this event.Corresponding preventive measures.