对于220 k V同塔双回输电线路来说,此电压等级输电线路的工作电压对线路耐雷性能的影响不容忽视。同时,雷电作为一种随机性的自然现象,雷击输电线路的随机性对输电线路耐雷性能的影响也同样重要。使用PSCAD/EMTDC电磁暂态软件建立典型220 k V同塔双回输电线路仿真模型,将雷击时刻的随机性考虑在内,分析了不同相序排列方式下一个工作电压周期内的反击耐雷性能,从而综合比较得出220 k V同塔双回输电线路在采用ABC/BCA和ABC/CBA两种相序排列方式下,其反击耐雷性能最优。
For 220 kV with double-circuit transmission line, the working voltage of thistransmission line to line lightning resisting level of influence cannot be ignored. At the same time, the randomness of the lightning as a natural phenomenon, affecting transmission lines lightning randomness lightning performance of transmission line is also important. This article uses PSCAD / EMTDC electromagnetic transient software to build a typical 220 kV double-circuit transmission line simulation model. Accounting to the lightning moment randomness, this article analyzes lightning performance under different phase sequence arrangement within an operating voltage period. Comprehensive comparison of results, we can find that 220 kV double-circuit transmission line use ABC / BCA and ABC / CBA owns the best counterattack lightning withstand performance.