一起220kV SF_6断路器合闸故障分析及处理

Analysis and Handling of Closing Fault for 220kV SF_6 Circuit Breaker

通过一起220kV SF_6断路器合闸故障的排查,分析断路器BLG1002A操作机构的具体工作过程,尤其是分合闸掣子装置在分合闸中是如何配合工作的。并基于此对故障进行了原因分析及对故障操作机构进行了检修,检修的结果证明了分析的正确性,进而提出了改进措施。

By the checking an closing fault of 220kV SF6 circuit breaker and analysis the principle of BLG1002A operating mechanism, especially how to cooperation of the detent device during closing and opening. Based on it, carry on repairing for faulted operating mechanism, it indicates the analysis is correct, and put the improvement.