±1100 kV吉泉线雷击致灾因子权重分析及高风险杆塔筛选  

Weight Analysis of Lightning Disaster Factors and High Risk Tower Identification for±1100 kV Jiquan Line

作　　者：任华 李健[1,2,3] 弥潇 谷山强[1,2,3] 王剑 吴敏 曹伟[1,2,3] 张瑞 REN Hua;LI Jian;MI Xiao;GU Shanqiang;WANG Jian;WU Min;CAO Wei;ZHANG Rui(NARI Group Co.,Ltd.,Nanjing 211106,China;Wuhan NARI Limited Liability Company,State Grid Electric Power Research Institute,Wuhan 430074,China;Hubei Key Laboratory of Power Grid Lightning Risk Prevention,Wuhan 430074,China;State Grid Shanghai Pudong Electric Power Supply Company,Shanghai 200122,China;State Grid Corporation of China,Beijing 100031,China)

机构地区：[1]南瑞集团有限公司,江苏南京211106 [2]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074 [3]电网雷击风险预防湖北省重点实验室,湖北武汉430074 [4]国网上海浦东供电公司,上海200122 [5]国家电网有限公司,北京100031

出　　处：《中国电力》2022年第2期115-124,共10页Electric Power

基　　金：国家电网公司科技项目(±1100 kV特高压直流输电线路雷电防护关键技术研究及应用,524625190020)。

摘　　要：目前已知输电线路雷击致灾因子主要包括雷电参数、地形地貌、绝缘配置、接地电阻等,但针对某条特定的线路,无法获得各因子对雷击风险的权重占比。以±1100 kV吉泉线为研究对象,深入挖掘该线路的雷击致灾因子,利用雷电灾害风险评估层次分析法,通过计算隶属度、构建判断矩阵对各致灾因子的权重占比进行分析。研究结果表明,该线路的沿线走廊地闪密度、雷电流幅值、边导线保护角的权重分别为0.420、0.247、0.147,是雷击风险权重较大的致灾因子。根据权重较高的致灾因子,采用分析集合的方法,筛选出了雷击闪络风险较高杆塔,为该线路防雷治理提供了重要依据。此方法比起逐基杆塔差异化防雷评估,可快速筛选出雷击闪络风险等级较高杆塔,显著降低工作烦冗度,适用于里程较长线路及批量线路雷害风险评估。Lightning disaster factors for transmission lines mainly include lightning parameters,landforms,insulation configuration and earth resistance,but their weight values for lightning risk are hard to be obtained for a certain transmission line.In this paper,an in-depth analysis is made of the lightning disaster factors for the±1100 kV Jiquan line.By using the analytic hierarchy process for lightning disaster risk evaluation,the weight of each disaster factor is obtained through calculating their membership and establishing judgment matrices.The results show that lightning density,lightning current amplitude and protection angle are main disaster factors with high weight values for lightning risk,and their weight values are 0.420,0.247,0.147 respectively.Based on the disaster factors with high weight values,the aggregation analysis method is used to identify the towers with high lightning risks,which has provided a important basis for formulating lightning protection strategy for Jiquan Line.Compared with the differential lightning risk evaluation on every tower,the proposed method in this paper can rapidly identify the towers with high risk of lightning,thus significantly reducing the tedious work.This method is applicable to lightning risk evaluation for the transmission lines with long distance or for a large number of transmission lines.

关 键 词：±1100 kV吉泉线 雷击致灾因子 层次分析法 权重分析 雷击风险 

分 类 号：TM863[电气工程—高电压与绝缘技术]