特高压输电线路绕击耐雷性能及其防雷措施分析  

Lightning Shielding Performance of UHV Transmission Lines and Analysis of Lightning Protection Measures

作　　者：宋俊峰 宋章胜 SONG Junfeng;SONG Zhangsheng(State Grid Hunan Ultra High Voltage Transmission Company,Hengyang 421002,China)

机构地区：[1]国网湖南超高压输电公司,湖南衡阳421002

出　　处：《通信电源技术》2023年第17期203-205,共3页Telecom Power Technology

摘　　要：为研究特高压(Ultra High Voltage,UHV)输电线路的绕击耐雷性能及其防雷措施,结合某特高压线路的工程实际,对其进行绕击耐雷性测试,并在此基础上进行线路绕击耐雷性能分析。结果表明:特高压输电线路的绕击耐雷性能较差,通过优化杆塔接地电阻和降低线路高度能够有效提高其耐雷性能;采用减小地线保护角的方式可以有效降低雷击跳闸率;在特高压输电线路上安装线路避雷器能够有效降低绕击跳闸率;在特高压输电线路的主要进线段安装避雷器,能够提高特高压输电线路的绕击耐雷性能。In order to study the lightning resistance of Ultra High Voltage(UHV)transmission lines and its lightning protection measures,combined with the engineering practice of an UHV line,the lightning resistance of the line is tested,and based on this,the lightning resistance of the line is analyzed.The results show that the lightning resistance of UHV transmission lines is poor,and the lightning resistance of UHV transmission lines can be effectively improved by optimizing the grounding resistance of the tower and reducing the height of the line.The lightning trip rate can be reduced effectively by reducing the protection Angle of ground wire.Installing line lightning arrester on UHV transmission line can reduce the tripping rate effectively.Installing lightning arrester in the main inlet section of UHV transmission line can improve the lightning resistance of UHV transmission line.

关 键 词：特高压(UHV) 输电线路 绕击 耐雷性能 防雷措施 

分 类 号：TM863[电气工程—高电压与绝缘技术]