漏退压板导致500kV母差保护误动作的分析与对策

Misoperation Analysis and Countermeasure of 500 kV Bus Differential Protection Caused by Forgetting to Exit Protection Linking Piece

对一起500kV断路器失灵保护误动事件进行了详细的分析。事件暴露出工作负责人履职不到位、运行人员直接调用历史操作票、现场图纸管理混乱等多种问题。针对这些问题提出相应的防范措施,确保失灵保护回路现场作业风险可控、在控。

A 500 kV circuit breaker malfunction protection malfunction event was analyzed in detail.The incident exposed many problems,such as the inadequate performance of the person in charge of the work,the direct invocation of historical operation tickets by operators,and the confusion of the management of site drawings.Corresponding preventive measures are put forward to ensure that the risk of failure protection circuit on-site operation can be controlled.