不同电压等级同塔多回线雷电反击性能研究  

Study on the Lightning Back Flashover Performance of Multi-circuit Transmission Lines with Different Operating Voltages

作　　者：顾悦[1] 张园 李江涛[1] 彭业 陈文忠[1] 余江 

机构地区：[1]西安交通大学电气工程学院,西安710049 [2]南方电网电力调度控制中心,广州510623

出　　处：《电瓷避雷器》2015年第3期138-142,共5页Insulators and Surge Arresters

基　　金：南方电网科技项目(编号:K-ZD2013-008)

摘　　要：利用电磁暂态仿真软件EMTP-ATP对110kV、220kV、500kV同塔并架多回线路进行仿真,考虑到结合同塔双回线路的特点,建立杆塔的多波阻抗模型,输电线路的JMarti模型。仿真计算中计入了雷击时瞬时的工作电压、导线上的感应电压、避雷线对导线的耦合电压等因素。对不同电压等级的同塔并架双回线路的反击闪络情况进行分析。研究了雷电流幅值、线路运行电压、导线的排列相序对闪络情况的影响。By using EMTP, the multi-circuit with voltage of 110kV, 220 kV and 500 kV is simulated. Considering the characteristics of double circuits on the same tower, the multi-wave impedance model of tower and the JMarti model of transmission line are built. The calculation is combined with factors such as operation voltage at lightning striking instantaneous, induced voltage on line, coupling voltage from overhead shielding lines to the line conductors. The back flashovers of the double circuits with different voltage levels are analyzed and the influencing factors to flashover of lightning current amplitude, line operation voltage and the phase arrangement of conductors are also studied.

关 键 词：同塔并架多回线 反击 耐雷性能 

分 类 号：TM862[电气工程—高电压与绝缘技术]