天广工程阀侧零序电压保护动作情况分析

The analysis on the action of valve-side zero sequence voltage protection in Tianguang project

在天广直流控制保护改造工程中,多次发生换流变阀侧零压保护动作的情况,分析了该保护动作的原因,并提出了解决问题的方法。

In the control and protection improvement project for Tianguang HVI）C transmission, the converter transformer valve zero-voltage protection had acted many times. This paper analyzed the reasons for the protection action, and gives the solution to the problem.