主动干预型消弧装置动作引起站用变压器跳闸分析

Analysis of Substation Transformer Tripping Caused by Active Intervention Arc Suppression Device

某110 kV变电站站用变压器高压侧断路器作为主动干预型消弧装置前置断路器,当线路发生相间故障时,站用变压器跳闸而线路未跳闸。针对该故障进行分析,给出处理建议,并提出定值优化策略,为主动干预型消弧装置与站用变压器的定值整定提供参考,为老旧变电站增加主动干预型消弧装置提供了一种新思路。

The high-voltage side circuit breaker of the substation transformer in a 110 kV substation is used as the front circuit breaker of the active intervention arc suppression device,when a phase-to-phase fault happens to the line,the substation transformer trips,but the line does not trip. The fault is analyzed,the suggestions are given,and the setting optimization strategy is proposed,so as to provide a reference for the setting of active intervention arc suppression device and substation transformer,and provide a new idea for adding active intervention arc suppression device in old substation.