换流阀冷却系统自动模式信号退出导致换流阀闭锁问题处理

The Automatic Mode Signal of the Cooling System of the Converter Valve Has Exited,Causing the Converter Valve to Lock

换流阀冷却系统是直流输电工程中极其重要的辅助设备,它的安全可靠运行是维持换流阀可靠运行的必要保证。随着换流阀冷却系统在换流站的受重视程度不断加大,同时因辅助设施导致换流站闭锁的不可容忍性加大,促使各换流站逐步开展一轮又一轮的闭锁排查。通过对单一元件的闭锁排查,发现某单一元件会导致换流站单极闭锁,对该现象进行分析及复现,对此单一元件造成的隐患进行整改。

Converter valve cooling system is an extremely important auxiliary equipment in the DC power transmission project,and its safe and reliable operation is the necessary guarantee to maintain the reliable operation of the converter valve.With the increasing attention paid to the converter valve cooling system in the converter station,the intolerance of converter station lockouts caused by auxiliary facilities has increased.Promote each converter station to gradually carry out round after round of lock investigation.It is found that a single element can lead to a single pole block in the converter station through the locking investigation of a single element.At the same time,this phenomenon is analyzed and repeated,and finally the hidden danger caused by this single element is rectified and eliminated.