500kV变电站工频电磁场分布及防护分析  

Analysis of power frequency electromagnetic field intensity distribution and protection in 500 kV substation

作　　者：刘嘉文[1] 李丽[1] 

机构地区：[1]广东电网公司电力科学研究院,广东广州510080

出　　处：《电力科技与环保》2014年第2期1-5,共5页Electric Power Technology and Environmental Protection

基　　金：中国南方电网公司科技项目(K-GD2011-414)

摘　　要：通过对广东地区500kV典型变电站的工频电场、工频磁场进行仿真计算和实际测量,分析500kV变电站不同电压等级、不同电气设备的工频电磁场水平及分布状况,从而提出合理的防护措施。统计结果表明,站内大部分区域工频电场和磁感应强度均满足ICNIRP规定的限值要求,主控楼、站外测点均远小于我国环评要求,防电磁辐射布料对工频电场的屏蔽效果显著。Power frequency electric ＆ magnetic field simulation calculation and actual measurement in typical 500 kV air insulated substation in Guangdong has been conducted. The distribution rule of electromagnetic environ- ment in 500 kV substation is studied in different voltage grade,different electrical equipment. The proposed meas- ures is available for reference to protection staff health in 500 kV substation. The results show that the level of e- lectromagnetic environment inside 500 kV substation meet ICNIRP limits requirement except in very few regions, the level of electromagnetic environment of main control building and outside 500 kV substation is lower than lim- its defined by environment protecting standard in China, the current shielding uniform can almost completely shield the power frequency electric field.

关 键 词：500 KV变电站 工频电场 工频磁感应强度 电磁环境 模拟计算 防护 

分 类 号：TM751[电气工程—电力系统及自动化]