一起罕见的220kV架空线路雷击故障跳闸分析  

Analysis of a Rare Lightning-stroke Fault of 220 kV Overhead Wire

作　　者：盛慧慧 杨静[2] 

机构地区：[1]北京市电力公司海淀供电公司,北京100086 [2]华北电网有限公司生产技术部,北京100053

出　　处：《电力科学与工程》2011年第5期56-59,70,共5页Electric Power Science and Engineering

摘　　要：针对一起220 kV架空线路雷击三塔三相故障跳闸事故,在考虑现有防雷措施、杆塔形式、绝缘子形式及配置的基础上,通过对地理环境、设备防雷措施、雷电机理过程等方面进行分析,得出事故是由于罕见的具有类似短波头特征的雷电造成雷击杆塔三相跳闸并引起两座相邻杆塔绝缘子雷击闪络破损。提出了进一步明确地区雷电活动的波形特征并开展针对性防范工作,继续开展雷电流波形探测手段的研究及并联间隙等防雷措施,供电力设备运行及科研院所借鉴。For a rare lightning-stroke which caused 3 towers and 3 phase fault of 220kV overhead wire,considering lightning protection,tower type,insulator type and configuration in existence,the paper concludes that the fault was becaused of a rare lightning which had shortwave character and caused the damage of insulators beside the main flashover tower by analyzing geographical environment and lightning mechanism.The paper presents developing more work on shortwave lightning,exploring of lightning wave and parallel gap lightning protection,and puts forward the precaution measure for the use of reference for electrical equipment running and research institutes.

关 键 词：架空线路 雷击跳闸 并联间隙 防雷措施 

分 类 号：TM862[电气工程—高电压与绝缘技术]