110kV同塔六回输电线路避雷线损耗研究  

Study on Consumption of Ground Wire for 110kV Six-circuits Transmission Lines on the Same Tower

作　　者：颜天佑 黄业同 杨长辉[2] 

机构地区：[1]广州电力设计院,广州510660 [2]上海电力学院电力工程系,上海200090

出　　处：《电力学报》2012年第1期5-9,共5页Journal of Electric Power

基　　金：国家自然科学基金项目(51007053)

摘　　要：为减少110 kV同塔六回输电线路避雷线损耗提供理论指导,深入研究了相序布置方式对避雷线损耗的影响,并分析了影响避雷线损耗的其他因素。在Matlab环境下,建立110 kV同塔六回输电线路模型,编程计算不同相序布置方式下的避雷线损耗,比较得到避雷线损耗最小的理想相序布置方式,验证了经验布置方式是避雷线损耗较小的相序布置方式,并通过仿真分析,得到两避雷线位置变化、导线水平距离变化和导线垂直距离变化对避雷线损耗的影响规律。With the increasing of voltage grade of power system,the power loss at ground wirebecomes more and more remarkable.Therefore,research on its reduction has great significance foreconomy and energy saving.The cause of the electric energy loss has been analyzed.The power lossreduction mall occasions and the validity to ground line sectionalization was calculated using Matlabprogram and the unbalance factor influenced by phase sequence arrangement is analyzed.It isdetermined that application of subsectional insulation on 110 kV transmission line can considerablyreduce the inductive current on ground wire,reducing the power losses more than that of directgrounding at two ends.Effort shall be made to keep balance of loads between three phases as theunbalanced load leads to more power losses.Proper adjusting section location and distance can reducethe power losses at ground wire to minimum.

关 键 词：超高压输电线路 同塔六回 避雷线损耗 相序布置 Matlab 

分 类 号：TM863[电气工程—高电压与绝缘技术]