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

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.