Application of Parallel Clearance in 10kV Overhead Lines
李晓晨①LI Xiao-chen;汤昕①TANG Xin;焦艺哲②JIAO Yi-zhe;
卢爽②LU Shuang;杨鑫②YANG Xin
①长沙电力职业技术学院(国网湖南省电力有限公司技术技能培训中心),长沙410131;
②长沙理工大学电气与信息工程学院,长沙410114
①Changha FEletrie Power Vocational and Technical College(The(Technical Skills Central'Training Department of State Grid Hunan Electric Power Corporation ),Changsha 410131 ,China ;
②School of Electrical and Information Engineering ,Changsha University of Technology ,Changsha 410114,China
摘要:10kV架空线路雷击跳闸率高,而适用的防雷措施较少,采用并联间隙的方法可靠、免维护。本文建立了10kV架空线路的雷电过电压的仿真计算模型,分析了并联间隙3相和单相安装方式的防雷效果。认为:3相并联间隙虽然使线路耐雷水平下降,但可以全面保护线路绝缘子,在线路易遭受直击雷的情况下应考虑使用.单相并联间隙对线路耐雷水平有显著提升,可作为配电线路重要的防雷措施使用。
Abstract: 10kV overhead lines have a high lightning trip rale, and there are few applicable lightning prolection measures. T'he methodof using parallel gapsis reliable and maintenance free. This article establishes a simulation calculation model for lightning overvolage of10kV overthead lines and analyzes the lightning prolection effect of parallel gap 3-phase and single-phase installation methods.Ilt isbelieved that although the 3-phase parallel clearance reduces the lightning resistance level of the line, it can comprehensively protect theline insulator,and should be considered for use when the line is prone to dlirect lightning strikes. The single-phase parallel clearancesignificantly improves the lightning resistance level of power lines and can be used as an important lightning protection measure fordistribution lines.
关键词:10kV架空线路;耐雷水平;单相并联间隙;3相并联间隙;应用方式
Key words: 10kV overhead line; lightning resistance level; single phase parallel clearance;3-phase parallel clearance; applicationmethod
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