同塔4回输电线路差异化防雷效果仿真分析  

Simulative Analysis of Differentiation Lightning Protection Effect of Four-circuit Overhead Transmission Lines

作　　者：彭向阳 余占清[2] 李志峰 毛先胤 李振[2] 王希[2] 

机构地区：[1]广东电力科学研究院,广州510080 [2]清华大学电机工程与应用电子技术系,北京100084

出　　处：《高电压技术》2014年第3期732-740,共9页High Voltage Engineering

基　　金：国家自然科学基金(50737001);国家重点基础研究发展计划(973计划)(2009CB724504)~~

摘　　要：对各种防雷措施进行防雷效果评估对于开展同塔线路防雷工作具有指导意义。为此,采用EMTP-ATP软件,对典型220 kV、220/500 kV同塔4回线路采用差绝缘、加装线路避雷器、加装引弧角、降低接地电阻、加强线路绝缘等8种防雷措施的防雷效果进行了仿真分析。研究表明:各种防雷措施防雷效果程度不同,各有技术和经济的局限性,可能会对线路运行维护、工程投资、线路不平衡度、单回线路耐雷水平造成影响。因此建议区分新建、运行线路来开展防雷设计和改造,强调重视降阻、加强绝缘等基础防雷措施的作用,并指出选择防雷措施不仅要考虑其防雷效果,还要考虑其经济性和对运行维护的影响。Evaluating the effect of different lightning protection measures is of guiding significance for multi-circuit lines. Using the EMTP-ATP software, we researched and evaluated the protection effect of eight measures on typical 220 kV, 220/500 kV four-circuit lines against lightning, including unbalanced insulation, installing line arrester, installing arc an- gle, reducing grounding resistance, and enhancing the line insulation, etc. The results show that effectiveness of lightning protection is different, and different measures also have different technical and economic limitations, so the selection of these measures may affect multi-circuit lines in aspects of operation and maintenance, project investment, line unbalance and single line lightning withstand level. As a result, we suggest taking different lightning protection measures after dis- tinguishing new construction lines and running lines, and emphasizing the lightning protection function of some basic measures including resistance reduction and insulation enhancement. For differentiating the lightning protection measures, we should take into account not only the lightning protection effect of measures, but also their influences on project economy, line operation and line maintenance.

关 键 词：输电线路 同塔多回 雷击跳闸率 耐雷水平 差异化防雷 防雷效果 

分 类 号：TM862[电气工程—高电压与绝缘技术]