【作者】 许丹莉； 陈宇民； 马仪； 蔡葆锐； 刘东； 王毅楠；

【Author】 XU Danli1,4,CHEN Yuming2,MA Yi2,CAI Baorui3,LIU Dong1,4,WANG Yi-nan1,4(1.Graduate Workstation of Yunnan Power Grid Corporation,Kunming,650217,China;2.Yunnan Electric Power Research Institute,Kunming,650217,China;3.Yunnan Power Grid Corporation,Kunming,650011,China;4.North China Electric Power University,Baoing,071003,China.)

【机构】 云南电网公司研究生工作站； 华北电力大学； 云南电力研究院； 云南电网公司；

【摘要】 雷击事故长期困扰电网,一般雷击造成云南电网输电线路跳闸占总跳闸数的50%以上,云南电网公司也早已把输电线路防雷的研究作为一项重点工作来抓。将线路避雷器应用到某些降低接地电阻困难以及对防雷有特殊要求的局部线段能有效提高线路防雷性能。简要介绍了线路避雷器的基本原理,分析了反击和绕击的不同情况下,线路避雷器安装位置及数目的选择;总结了云南电网110kV、220kV输电线路避雷器应用的情况,针对存在的问题,提出防雷措施建议。更多还原

【Abstract】 Lightning accident have plagued powwe grid long time,lightning tripped rate up to 50% in yunnan power grid.Yunnan power grid company also had the anti-lightning research of transmission lines as a key work to catch on.Line lightning arrester applied to certain local line can effectively enhance the performance of Lightning protection.These lines mainly refers to the lines that difficult to reduce grounding resistance and which have special requirements.The basic principle of line arrester was briefly introduced.In the the different situations of the back and around strike,the analysis was carried out on the line arrester installation position and the number.The paper sums up the application situation of 110kV,220kV transmission line.Aimed at the existing problems,the suggestions of lightning protection was forward.更多还原