01高海拔地区500kV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http://dlkc.cbpt.cnki.net电网设计第7期DOI：10.13500/j.dlkcsj.issn1671-9913.2023.07.001高海拔地区500kV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唐滔1，陈小月2，王羽2，吴华实2(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)摘要：依托吉隆500kV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500kV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220kV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500kV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。关键词：变电站；降压运行；雷电侵入波；避雷器中图分类号：TM726文献标志码：A文章编号：1671-9913(2023)07-01-06LightningIntrusiveWaveOvervoltageandOptimalLightningArresterArrangementof500kVLinesinStep-downOperationatHighAltitudeTANGTao1,CHENXiaoyue2,WANGYu2,WUHuanshi2(1.SouthwestElectricPowerDesignInstituteCo.,Ltd.ofChinaPowerEngineeringConsultingGroup,Chengdu610021,China;2.WuhanUniversity,Wuhan430072,China)Abstract:RelyingonJilong500kVsubstationproject,thelightningintrusivewaveovervoltageofthesubstationinthehigh-altitudeareawhenthe500kVlinesufferedfromlightningstrikeiscalculatedunderdifferentoperationmodes;Thelightningintrusivewaveovervoltageofthesubstationwhenthe220kVlinesufferedfromlightningstrikeisalsocalculated.Itisnoticedthatthereisacertaindifferenceintheovervoltagelevelinthesubstationunderthetwoconditions,basedonthecalculationconditionsinthisarticle,thereasonsforthedifferenceareanalyzed;theoptimalconfigurationofthearresterofthesubstationisdetermined,andtheprotectioneffectoftheoptimalconfigurationofthearresterisverified.Keywords:substation;step-downoperation;lightningintrusivewave;lightningarrester*收稿日期：2021-06-16第一作者简介：唐滔(1978—)，男，高级工程师，从事火力发电厂、变电站电气一次设计工作。02http://dlkc.cbpt.cnki.net电力勘测...
