一起空气开关跳闸引起的机组流程闭锁分析与对策

Analysis and Countermeasures of Unit Process Blocking by Circuit Breaker Trip

介绍一起抽水蓄能电站主变压器低压侧TV二次开关跳闸导致机组工况闭锁事件,通过对该事件的分析,该类开关对机组运行保护有重要影响,由于抽水蓄能电站机组的特殊性,提出了对应运维解决办法,同时空气开关跳闸具有隐蔽性,应引起电站生产人员足够重视,针对本次事件将类似空气开关在技术和管理方面提出了防范措施,从而保障机组和电网的稳定运行。

Introduction with pumping LV side of main transformer station PT two switch trip caused unit locking event storage conditions, through the analysis of the event, the switch hasan important influence on the operation of protection unit, the pumped storage power station unit＇ s particularity, proposed the corresponding maintenance solution, at the same time, the air switch trip has concealment that should cause enough attention to plant production staff, this event will be similar to the air switch proposed preventive measures in technology and management, so as to ensure the stable operation of the unit and the power grid.