摘要
鉴于"溪洛渡送电广东±500kV同塔双回直流输电线路工程"的路径雷电活动频繁和双回路塔身较高的特点,运用ATP-EMTP模拟仿真软件,建立了杆塔的多波阻抗模型和绝缘子雷击闪络的先导发展模型,对该线路4种极导线排列方案的反击耐雷性能进行了深入的研究。根据计算结果,结合运行维护的要求,提出了最优的极导线排列方式和提高线路反击耐雷性能的方法。
In view of the heavy thundering stroke on the route and higher double-circuit towers of the ＂Xiluodu-Guangdong HVDC ±500kV double circuit transmission＂ project,a mathematical simulation model on the lightning back-flashover performance of ±500kV DC double circuit towers is established based on the ATP-EMTP software,which includes the multi-wave-impedance model of tower and the leader propagation flashover model of insulators.With the model,the lightning back-flashover performance of 4 polar layout of Xiluodu-Guangdong ±500kV DC double circuit transmission lines is simulated. The best polar disposition is selected through the calculated results. Moreover, methods for improving back-flashover lightning performance on these doublecircuit towers is put forward.
出处
《广东输电与变电技术》
2009年第5期1-5,共5页
Guangdong Power Transmission Technology
