期刊论文

Research on Lightning Withstand Performance of 500 kV Double-circuit Transmission Line

中文

电力学报

1005-6548

2014

29

6

461-467+478

10.13357/j.cnki.jep.002397

国家自然科学基金资助课题（50977003） 电力交通安全监控及节能技术教育部工程研究中心基金（2010#03）

本校为第一机构

与单回500 kV输电线路相比,同塔双回500 kV输电线路杆塔高度增加,引雷面积增大,将直接影响到线路的耐雷水平。文章依据先导发展闪络判据,模拟电弧的非线性特性,建立了绝缘闪络模型。利用电磁暂态仿真软件（ATP-EMTP）,搭建了500 kV同塔双回输电线路反击耐雷性能仿真电路,分析了杆塔高度、冲击接地电阻和工频电压等因素对线路反击耐雷性能的影响。结果表明:杆塔高度增加后,线路反击耐雷水平显著降低;杆塔冲击接地电阻的增大,将导致线路跳闸率上升,在电阻较高的情况下尤为明显;同时工频电压对500 kV同塔双回输电线路耐雷性能影响尤为明显,因此,在500 kV同塔双回输电线路的设计中应充分考虑工频电压...

Compared with the 500 kV single circuit transmission lines on same tower, 500 kV double circuit transmission line tower has a higher height and bigger lightning area,it will directly affect the lightning withstanding level. Based on the pilot development of flashover criterion, in order to simulate the nonlinear characteristics of arc, we established the insulation flashover model. Based on the electromagnetic transient program ATP-EMTP 500 kV, we established a simulation model of the back-flashover performance for 500 kV AC transmission lines ...