高压直流输电换流阀冷却系统氮气稳压方式电磁阀隐患治理方法

Troubleshooting Method for Electromagnetic Valve in Nitrogen Pressure Stabilization of Converter Valve Cooling System in High Voltage Direct Current Transmission

某换流站阀冷系统膨胀罐排气电磁阀故障导致一系列报警。介绍了阀冷系统的主要结构,并结合此次故障案例进行分析,得出阀冷系统目前氮气稳压控制方式中电磁阀的隐患,并提出相应的隐患治理方法建议。

This paper reports a valve cooling system malfunction occurred at an actual converter station which led to a series of alarms due to a fault in its expansion tank exhaust electromagnetic valve.The main structure of the valve cooling system is given and combined with the fault case.The potential risks of the electromagnetic valve in current applied nitrogen pressure control method of valve cooling system are specified,and the corresponding risk management suggestions are proposed.