施工线路平行交流特高压线路感应电影响因素分析  

Analysis of Influence Factors of Induction Current in Parallel UHV AC Line

作　　者：郑远笛 李慧奇[1] 郭鑫 ZHENG Yuandi;LI Huiqi;GUO Xin(School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China;Taiyuan Power Supply Company,State Grid Shanxi Electric Power Company,Taiyuan 030012,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]国网山西省电力公司太原供电公司,山西太原030012

出　　处：《电工技术》2021年第20期148-150,153,共4页Electric Engineering

摘　　要：多条特高压在安徽境内共走廊架设,输电通道密集区电压等级高、输送容量大、线间距离小、平行距离长,运行线路对施工线路电磁感应情况更加严重。基于电磁暂态分析软件建立了同塔双回交流带电线路以及平行架设的昌吉-古泉±1100 kV直流施工线路的模型,计算了交流特高压不同运行工况下对施工线路面临的静电感应电压和电磁感应电流,分析了影响感应电压和电流的因素,研究结果为平行特高压交流输电线路架线安全提供了理论基础。A number of UHV which shared transmission channels set up in Anhui.The high voltage level,large transmission capacity,small distance between lines,and long parallel distance in dense transmission channels make the electromagnetic induction of construction lines more serious.Based on the electromagnetic transient analysis software,the model of the double-circuit AC live line on the same tower and the parallel Changji-Guquan±1100 kV DC construction line is established.The electrostatic induction voltage and electromagnetic induction current facing the construction line under different operating conditions of AC UHV are calculated,and the factors affecting the induced voltage and current are analyzed.The research results provide a theoretical basis for the safety of parallel UHV AC transmission lines.

关 键 词：施工线路 杆塔接地电阻 感应电压 感应电流 

分 类 号：TM75[电气工程—电力系统及自动化]