同塔双回直流换流站雷电侵入波特性

The Characteristics of Lighting Intruding Overvoltage in the HVDC Double Circuit System of Converter Stations

以单回直流系统的换流站为基础,搭建一个同塔双回直流换流站系统,利用电磁暂态仿真软件ATP-EMTP,仿真计算同塔双回直流系统换流站直流侧的雷电侵入波过电压,以研究换流站的雷电侵入波特性和分析同塔双回和单回直流系统雷电侵入波特性的差别。结果表明,同塔双回直流系统换流站雷电侵入波过电压幅值与雷击形式、雷击点、系统运行方式以及工作电压极性均有关系,而且在直流侧的这个过电压幅值比起单回直流系统的要小。

Based on the converter station of HVDC single circuit system, and building a HVDC double circuit system, this paper does a simulation study on the lightning intruding overvoltage of HVDC double circuit system by means of ATP-EMTP as to find the characteristics of the lightning intruding overvoltage and the difference between the double circuit system and the single circuit system. The calculation results show that the amplitude of lightning intruding overvoltage is related to the form of lightning, the location of lightning, operation modes and polarity of the operating voltage, and less than that of the single circuit system at the DC side.