绝缘地线的感应电压研究  

Research on Induced Voltage of Insulated Ground Wire

作　　者：周魁 常菲 王艳君 ZHOU Kui;CHANG Fei;WANG Yanjun(New Energy Co.,Ltd.,CPECC,Wuhan,Hubei 430071,China;ITIC General Institute of Architectural Design and Research Co.,Ltd.,Wuhan,Hubei 430000,China;College of Electrical Engineering and New Energy,China Three Gorges University,Yichang,Hubei 443002,China)

机构地区：[1]中国电力工程顾问集团新能源有限公司,湖北武汉430071 [2]中信建筑设计研究总院有限公司,湖北武汉430000 [3]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《自动化应用》2024年第16期69-71,共3页Automation Application

摘　　要：当输电线路运行时,绝缘地线将产生工频感应电压,该感应电压对运维检修和地线绝缘间隙有较大影响。为此,建立500 kV单回架空线路的地线感应电压仿真计算模型,计算地线全线绝缘、地线全线绝缘(单点接地)、地线绝缘(沿线设有效接地点)3种情况下的感应电压,分析线路长度、输送容量、接地点等对感应电压的影响,并提出降低感应电压的有效措施。During the operation of transmission lines,the insulated ground wire will generate power frequency induced voltage,which has a significant impact on operation and maintenance,as well as the insulation gap of the ground wire.Therefore,establish a simulation calculation model for the induced voltage of the ground wire of a 500 kV single circuit overhead line,calculate the induced voltage under three conditions:Full insulation of the ground wire,full insulation of the ground wire(single point grounding),and insulation of the ground wire(with effective grounding points along the line),analyze the influence of line length,transmission capacity,grounding point,etc.on the induced voltage,and propose effective measures to reduce the induced voltage.

关 键 词：地线 感应电压 绝缘 

分 类 号：TM75[电气工程—电力系统及自动化]