[1]王鹏宇,元乙贺,李 博,等.计及雷电入射角输电线路绕击跳闸率的计算[J].电瓷避雷器,2020,(03):92-97.[doi:10.16188/j.isa.1003-8337.2020.03.015]
 WANG Pengyu,YUAN Yihe,LI Bo,et al.Calculation of Shielding Failure Trip Rate of Transmission Lines Considering Lightning Incidence Angle[J].,2020,(03):92-97.[doi:10.16188/j.isa.1003-8337.2020.03.015]
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计及雷电入射角输电线路绕击跳闸率的计算()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年03期
页码:
92-97
栏目:
避雷器
出版日期:
2020-06-25

文章信息/Info

Title:
Calculation of Shielding Failure Trip Rate of Transmission Lines Considering Lightning Incidence Angle
作者:
王鹏宇1 元乙贺2 李 博3 王日辉2
(1.国网长春供电公司, 长春 130000; 2.东北电力大学电气工程学院, 吉林 吉林 132012; 3.国网内蒙古东部电力有限公司 电力科学研究院,呼和浩特 010000)
Author(s):
WANG Pengyu1 YUAN Yihe2 LI Bo3 WANG Rihui2
(1.State Grid CHANGCHUN Power Supply Company, Changchun 130000, China; 2.Electrical Engineering College, Northeast Electric Power University, Jilin 132012, China; 3.Electric Power Research Institute, Eastern Inner Mongolia Electric Power Company of State Grid, Hohhot 010000, China)
关键词:
绕击跳闸率 雷电入射角 暴露宽度 电气几何模型
Keywords:
shielding failure trip rate incident angle of lightning exposure width electrical geometric model
DOI:
10.16188/j.isa.1003-8337.2020.03.015
摘要:
电气几何模型能够有效的计算出输电线路的暴露宽度进而求出绕击跳闸率。利用改进电气几何模型将雷击的方向扩至[-π/2,ψmax],通过求出暴露弧、屏蔽弧不同雷电入射角下在地面上的投影,根据先导入射角的概率分布得出绕击跳闸率。该方法表明传统模型中仅仅将雷电流看为垂直向下算得的误差很大,无法反应线路真实情况。最后,通过计算分析220 kV单回输电线路和同塔双回输电线路,并将其与实际情况对比分析,进而验证了此方法的准确性,在实际应用中具有借鉴意义。
Abstract:
The electrical geometry model can effectively calculate the exposure width of transmission lines and calculate the shielding failure trip rate.In this paper, the lightning incidence angle is expanded to [-π/2,ψmax] by using the improved electrical geometry model.By calculating the projections of exposed arc and shielded arc on the ground at different lightning incidence angles, the shielding trip-out rate is obtained according to the probability distribution of the pilot incidence angle.This method shows that the traditional model only regards lightning current as a vertical downward calculation error is very large, which cannot reflect the real situation of the line. Finally, the calculation and analysis of the 220 kV single circuit transmission line and the double circuit transmission line of the same tower and the actual situation are compared and analyzed, and the accuracy of the method is verified, providing reference in practical application.

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备注/Memo

备注/Memo:
收稿日期:2018-09-01 作者简介:王鹏宇(1994—),男,硕士,主要研究方向为电力系统高电压与绝缘技术。
更新日期/Last Update: 2020-07-07