输电线路参数对杆塔分流系数的影响研究  

Research on the Influence of Transmission Line Parameters on the Shunted Coefficient of Tower Pole

作　　者：李牧轩 丘文彪 田中天 严小敏 LI Mu-xuan;QIU Wen-biao;TIAN Zhong-tian;YAN Xiao-min(Meizhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd,Meizhou 514000,China;Wuhan Sunshine Power Science&Technology Co.,Ltd,Wuhan 430070,China)

机构地区：[1]广东电网有限责任公司梅州供电局,广东梅州514000 [2]武汉三相电力科技有限公司,湖北武汉430070

出　　处：《电工电气》2022年第8期27-30,共4页Electrotechnics Electric

基　　金：中国南方电网有限责任公司科技项目(GDKJXM20200379)。

摘　　要：杆塔分流系数是决定输电线路反击耐雷水平的重要因素,输电线路自身参数对杆塔分流系数的影响不可忽视。基于多波阻抗模型,利用ATP-EMTP软件对不同接地电阻、杆塔呼高、线路档距下的杆塔分流系数进行仿真分析,结果表明接地电阻与线路档距对分流系数有明显的影响,是在防雷计算中需要考虑的因素。The shunted coefficient of tower poles is a decisive factor in the lightning back-flashover of the transmission line,and the parameters of the transmission line have an assignable influence on the shunted coefficient of tower poles.Based on the multi-wave impedance model,this research employed the ATP-EMTP software to do the simulation analysis of the shunted coefficient of tower poles from various grounding resistance,nominal heights,and line span.The result shows grounding resistance and line span have to be considered in lighting protection calculation because they have obvious effects on the shunted coefficient.

关 键 词：输电线路 杆塔分流系数 防雷 接地电阻 

分 类 号：TM726[电气工程—电力系统及自动化] TM863