275千伏输电线路的雷电性能

R. Bhattarai, R. Rashedin, S. Venkatesan, A. Haddad, H. Griffiths, N. Harid
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引用次数: 9

摘要

本文利用TFlash和Sigma-Slp两种软件程序对275 kV双回路屏蔽传输线的防雷性能进行了对比研究。采用单行程和统计性能分析,并考虑屏蔽失效和反闪络情况,对线路性能进行了研究。通过灵敏度分析确定了闪络率与影响闪络率的参数之间的关系。为了提高线路的防雷性能,采用不同的相位和线路位置引入金属氧化物避雷器。提出了优化避雷器布置方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lightning performance of 275 kV transmission lines
This paper presents a comparative lightning performance study conducted on a 275 kV double circuit shielded transmission line using two software programs, TFlash and Sigma-Slp. The line performance was investigated by using both a single stroke and a statistical performance analysis and considering cases of shielding failure and backflashover. A sensitivity analysis was carried out to determine the relationship between the flashover rate and the parameters influencing it. To improve the lightning performance of the line, metal oxide surge arresters were introduced using different phase and line locations. Optimised arrester arrangements are proposed.
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