基于复合材料塔头的110 kV双回输电线路反击耐雷性能仿真分析  

Lightning Performance Simulation of 110 kV Double-Circuit Transmission Line Based on Lattice Composite Material Tower Head

作　　者：张廼龙 陈杰 李陈莹 胡丽斌 谭笑 ZHANG Nailong;CHEN Jie;LI Chenying;HU Libin;TAN Xiao(State Grid Jiangsu Electric Power Co.,Ltd.,Research Institute,Nanjing 211103,China)

机构地区：[1]国网江苏省电力有限公司电力科学研究院,南京211103

出　　处：《电瓷避雷器》2020年第4期114-119,共6页Insulators and Surge Arresters

摘　　要：复合材料杆塔以其突出的机械性能、绝缘性能和环境友好性,是未来国家电网输电线路杆塔改造的重要发展方向,开展复合材料杆塔输电各项关键技术的研究工作十分重要。针对目前提出的复合材料塔头与金属角钢塔身组合而成的"半绝缘结构复合材料杆塔",采用顺线方向垂直引下接地的防雷设计方案,考虑感应电压和工作电压的影响,通过EMTP/ATP仿真计算获得其反击一相闪络和两相闪络的耐雷水平,并分析了接地电阻对耐雷水平的影响。计算结果表明:随着接地电阻从10Ω升高到20Ω,半绝缘结构复合材料杆塔反击一相闪络的耐雷水平降低了82%,半绝缘结构复合材料杆塔反击耐雷水平与铁塔相比,在接地电阻为10Ω和20Ω条件下分别提升了84%和92%。With its outstanding mechanical properties,insulation properties and environment-friendly,the composite pole tower is an important development direction for the transformation of the national grid transmission line towers in the future.In this paper,the"semi-insulating structural composite material tower"which is composed of the composite material tower head and the metal angle steel tower body is proposed,and the grounding lightning protection design scheme is adopted in the vertical direction,considering the influence of induced voltage and working voltage.The lightning resistance level of the counter-phase flashover and two-phase flashover is obtained by EMTP/ATP simulation calculation,and the influence of grounding resistance on the lightning resistance level is analyzed.The calculation results show that as the grounding resistance increases from 10Ωto 20Ω,the lightning resistance level of the phase-flashover of the semi-insulated structural composite tower is reduced by 82%.Compared with the iron tower,the counter-attack lightning resistance level of semi-insulated composite tower increases by 84%and 92%respectively when the grounding resistance is 10Ωand 20Ω.

关 键 词：复合材料杆塔 顺线方向垂直接地 耐雷水平 接地电阻 双回输电线路 

分 类 号：TM863[电气工程—高电压与绝缘技术]