杆塔档距及相序排列对330 kV同塔双回输电线路反击过电压的影响分析  

Influence of Tower Span and Phase Sequence Arrangement on the Overvoltage of 330 kV Double-Circuit Transmission Line

作　　者：张军强 张栋 董卓元 郑艳红 刘法亮 于淑婷 贺博[3] 张浩[3] ZHANG Junqiang;ZHANG Dong;DONG Zhuoyuan;ZHENG Yanhong;LIU Faliang;YU Shuting;HE Bo;ZHANG Hao(State Grid Shaanxi Electric Power Company Limited Economic and Technological Research Institute,Xi′an 710075,China;State Grid Shaanxi Electric Power Company Limited,Xi′an 710004,China;School of Electrical Engineering,Xi′an Jiaotong University,Xi′an 710049,China)

机构地区：[1]国网陕西省电力有限公司经济技术研究院,西安710075 [2]国网陕西省电力有限公司,西安710004 [3]西安交通大学电气工程学院,西安7100749

出　　处：《电瓷避雷器》2024年第3期33-39,47,共8页Insulators and Surge Arresters

摘　　要：330 kV输电线路是我国西北主电网的重要组成,电网的安全稳定运行关乎社会的和谐与稳定。由于330 kV输电线路的送电距离较远,通常可达200 km以上,杆塔的接地状态和档距设置也随地形发生变化。发生雷击时,由于档距会对雷电波沿输电线传播的折反射产生影响,从而影响输电线路的耐雷性能。此外,330 kV线路普遍采用双回路铁塔架设输电线路,沿途存在换相,不同地段的相序不尽相同,因此有必要研究不同的相序排列方式对线路耐雷性能的影响。使用EMTP暂态仿真软件构建330 kV同塔双回输电线路雷电反击模型,分析讨论了不同档距和不同相序对330 kV输电线路雷电反击过电压的影响,可对330 kV线路的防雷设计提供参考。330 kV transmission line is an important part of the Northwest Power Grid,and its safe and stable operation is related to the harmony and stability of society.Due to the long transmission distance of 330 kV transmission line,which can be more than 200 km,the terrain is complicated,and the span of the same line is not the same.When a lightning strike occurs,the span will affect the refraction and reflection of the lightning wave propagating along the transmission line,thereby affecting the lightning resistance performance of the transmission line.As 330 kV lines generally use double-circuit towers to erect transmission lines,the phase sequence in different sections is not the same.Therefore,it is necessary to study the impact of different phase sequence arrangements on the lightning resistance performance of the lines.The author uses EMTP transient simulation software to build a 330 kV double-circuit transmission line on the same tower lightning back striking model,discusses and analyzes the impact of different span and different phase sequences on the lightning backstroke overvoltage of 330 kV transmission lines.

关 键 词：330 kV 反击 同塔双回 档距 相序 

分 类 号：TM863[电气工程—高电压与绝缘技术]