酒湖线湖南段特高压直流输电线路耐雷性能分析  

Analysis of Lightning Protection Performance of UHVDC Transmission Lines in Jiuhu Line Hunan Section

作　　者：周顺 周羽生[1] 陈辉 刘诗涵 刘超智 ZHOU Shun;ZHOU Yusheng;CHEN Hui;LIU Shihan;LIU Chaozhi(Changsha University of Science ＆ Technology, Changsha 410114, China)

机构地区：[1]长沙理工大学智能电网运行与控制湖南省重点实验室,长沙410114

出　　处：《电瓷避雷器》2018年第2期8-14,19,共8页Insulators and Surge Arresters

基　　金：国家自然科学基金(编号:51407013);湖南省高等学校创新平台基金资助项目(编号:14K001)

摘　　要：酒湖线±800 kV特高压直流线路湖南段沿线路段地理复杂,属于雷暴频发区域,线路良好的耐雷性能是安全可靠运行的基础。本文基于ATP-EMTP软件,搭建了酒湖线特高压杆塔多段波阻抗模型,基于相交法的绝缘子闪络模型,以及考虑火花效应的接地电阻模型,构建了酒湖线特高压线路反击耐雷模型,分析了湖南段线路反击耐雷性能。利用电气几何法与规程法相结合,计算了绕击闪络率。研究表明:减小接地电阻和降低杆塔呼高以及提高线路绝缘水平,有利于提高特高压直流输电线路反击耐雷水平;采用负保护角有利于提高特高压直流线路绕击耐雷性能。The corridor area along Hunan section of Jiuhu ±800 kV UHVDC belong to the area where lightning activity is more frequent. It is very important to study on lightning protection performance of the line. In this paper, we build the UHVDC back striking lightning protection model based on the ATP-EMTP. It includes the tower surge impedance model, flashover model of insulators based on intersection method, and grounding resistance model to calculate the Jiuhu line Hunan section of transmission line back striking lightning protection performance. The shielding failure flashover rate is calculated by the method of electrical geometry and the method of calculation. The research show that reducing the grounding resistance, tower height, and improve the line insulation level, is conducive to the improvement of back striking lightning protection level of UHVDC transmission lines; the negative protection angle can improve the shielding failure lightning protection performance of UHVDC transmission line.

关 键 词：酒湖线 特高压 ATP-EMTP 耐雷性能 

分 类 号：TM863[电气工程—高电压与绝缘技术]