某220kV架空线路雷击三塔三相故障跳闸分析  

Analysis on a Lightning-stroke Caused 3 Towers and 3 Phase Fault of 220 kV Overhead Line

作　　者：杨静[1] 王剑[1] 许竞 李雨[3] 

机构地区：[1]华北电网有限公司,北京100053 [2]秦皇岛电力公司,河北秦皇岛066000 [3]华北电力科学研究院有限责任公司,北京100045

出　　处：《华北电力技术》2011年第6期47-50,共4页North China Electric Power

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。For a rare lightning-stroke which caused 3 towers and 3 phase fault of 220 kV overhead line,considering lightning protection,tower type,insulator type and configuration in existence,conclusions were made that the fault was caused by a rare lightning which had shortwave character and led to the damage of insulators beside the main flashover tower by analysis on geographical environment and lightning mechanism.Main focus was put on shortwave lightning and the precaution measure for electrical equipment operation.

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]