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| Simulation analysis on lightning strike characteristics of 35kV overhead lines in mountainous area |
| ZHANG Wenfeng1, LI Zhiwei1, ZHANG Guojian1, LIN Gan2,3 |
1. Dali Power Supply Bureau, Yunnan Power Grid Co., Ltd, Dali, Yunnan 671000;
2. Hubei Provincial Engineering Technology Research Center for Power Transmission Line (China Three Gorges University), Yichang, Hubei 443002;
3. College of Electrical Engineering & New Energy, China Three Gorges University, Yichang, Hubei 443002 |
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Abstract The typical terrains characteristics of Dali mountainous area overhead lines are analyzed in this paper. Based on the lightning activity data of lines collected by the lightning location system, the lightning resistance level and the trip rate of direct and induced lightning are calculated under typical terrain conditions such as ridge, hillside, valley and plain. The variation law of lightning trip rate of overhead line under mountainous terrain is obtained. The results show that the lightning trip rate varies greatly under different terrain conditions. The direct lightning trip rate of the line located on the ridge is larger and decreases with the decrease of the slope on both sides. However, the induced lightning trip rate of the line located in the valley is larger, which increases with the increase of the slope. Compared with plain areas, the lightning trip rate of mountainous lines is increased by about 64%.
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Received: 05 May 2022
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| Cite this article: |
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ZHANG Wenfeng,LI Zhiwei,ZHANG Guojian等. Simulation analysis on lightning strike characteristics of 35kV overhead lines in mountainous area[J]. Electrical Engineering, 2022, 23(9): 19-28.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2022/V23/I9/19
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2022, Vol. 23 
