110～500kV线路防感应电措施研究  

Study on Inductive Voltage Protection of 110～500 kV Transmission Line

作　　者：许飞[1] 李恒灿[1] 吴荣[1] 韦金胜[1] 

机构地区：[1]广西电网公司电力科学研究院,广西南宁530023

出　　处：《广西电力》2010年第2期5-7,35,共4页Guangxi Electric Power

摘　　要：对输电线路感应电产生的原因进行分析,通过对广西电网110～500 kV典型输电线路上的电场强度和感应电压实测和分析,结果表明线路杆塔上的工频电场强度分布极不均匀,大多数220 kV线路塔上人体感应电流已经超过了150μA的限值。线路上的感应电压也远远超过人体36 V的安全电压。根据测试结果有针对性地提出了电场和感应电压的防护措施。The reason of inductive voltage of transmission line is analyzed.According to field tests and analysis of electric field intensity and inductive voltage of typical 110～500 kV transmission lines,it is found that the distribution of power frequency electric field intensity on transmission line tower is extremely non-uniform,and the human body inductive current on most 220 kV transmission line towers is over the limit value of 150 μA,and the inductive voltage along transmission line is far over the human body safe voltage of 36 V.Protection measures of electric field and inductive voltage are also proposed based on test results.

关 键 词：输电线路 电场强度 感应电压 防护 

分 类 号：TM855[电气工程—高电压与绝缘技术]