换流站电压应力保护判据优化研究

Research on Optimization of Voltage Stress Protection Criterion for Converter Station

为防止换流阀承受过高电压应力而造成损坏,直流控制保护软件中配置有电压应力保护逻辑,对换流阀设备进行保护。当前,换流站电压应力保护逻辑还不够完善,无法完全保护换流阀。在介绍换流站电压应力保护原理的基础上,针对保护逻辑中存在的问题,深入分析研究,对软件逻辑中的保护判据提出了优化方案,能够有效提高换流站运行的安全性和可靠性。

In order to prevent the converter valve from being damaged due to excessive high voltage stress,the DC control protection software is equipped with voltage stress protection logic to protect the converter valve equipment.At present,the voltage stress protection logic of the converter station is not perfect enough to fully protect the converter valve.Based on the introduction of protection principles,this article analyzes and studies the problems in the protection logic in depth,and proposes an optimization plan for the protection criteria in the software logic,which can effectively improve the safety and reliability of the converter station operation.