±800kV DC换流站避雷器配置与参数选择

Arrester Configuration and Parameters Selection in±800 kV Direct Current Converter Station

基于特高压换流站的特殊性考虑,介绍了两种不同的避雷器配置方案,方案A采用M2避雷器和CB1A避雷器,方案B采用A2避雷器、CB1A和CB1B避雷器。讨论了配置C2避雷器的必要性,分析了CB1B避雷器优化经济性的原因及平抗分置所带来的优势,并根据避雷器直流参考电压的选择原则选择了相应参数,对DC输电工程具有参考作用。

This paper introduced two different types of arrester protection schemes based on the special consideration of ultra high vacuum （UHV） direct current （DC） converter station. The scheme A used M2 and CB1A type attesters and the scheme B used A2, CB1A and CBIB type arresters. This paper discussed the allocation necessity of C2 type arrester, analyzing the reason why CB1B type arrester could optimize the economical efficiency and the superiority caused by smoothing reactor distribution. According to the selection principle of arrester DC reference voltage, the corresponding parameters were selected, which provides references for DC transmission project.