高海拔地区500 kV线路降压运行工况下雷电侵入波过电压及避雷器优化配置  

Lightning Intrusive Wave Overvoltage and Optimal Lightning Arrester Arrangement of 500 kV Lines in Step-down Operation at High Altitude

作　　者：唐滔 陈小月 王羽[2] 吴华实 TANG Tao;CHEN Xiaoyue;WANG Yu;WU Huanshi(Southwest Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Chengdu 610021,China;Wuhan University,Wuhan 430072,China)

机构地区：[1]中国电力工程顾问集团西南电力设计院有限公司,四川成都610021 [2]武汉大学,湖北武汉430072

出　　处：《电力勘测设计》2023年第7期1-6,59,共7页Electric Power Survey & Design

摘　　要：依托吉隆500 kV变电站新建工程,计算不同运行方式下高海拔地区降压运行的500 kV线路分别遭受雷电反击和雷电绕击时变电站内的雷电侵入波过电压;计算常规220 kV线路遭受雷击时变电站内的雷电侵入波过电压并与降压运行的500 kV线路遭受雷击的情况进行对比,发现两种情况下变电站内的过电压水平存在一定差异,基于本文的计算条件分析造成差异的原因;确定该变电站的避雷器优化配置方案,并对避雷器优化配置方案的保护效果进行了验证。Relying on Jilong 500 kV substation project,the lightning intrusive wave overvoltage of the substation in the high-altitude area when the 500 kV line suffered from lightning strike is calculated under different operation modes;The lightning intrusive wave overvoltage of the substation when the 220 kV line suffered from lightning strike is also calculated.It is noticed that there is a certain difference in the overvoltage level in the substation under the two conditions,based on the calculation conditions in this article,the reasons for the difference are analyzed;the optimal configuration of the arrester of the substation is determined,and the protection effect of the optimal configuration of the arrester is verified.

关 键 词：变电站 降压运行 雷电侵入波 避雷器 

分 类 号：TM726[电气工程—电力系统及自动化]