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.
出处
《电瓷避雷器》
CAS
北大核心
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)
关键词
同塔并架多回线
反击
耐雷性能
multi-circuit transmission line
back flashover
lightning performance
