兰州市区地下电力电缆对环境的电磁影响分析  

Analysis on electromagnetic environmental impact concerning underground power cable of Lanzhou

作　　者：高世刚[1] 姜梅[1] 李炜[1] 杨洁[1] 张鹏[1] 李小娟[1] 

机构地区：[1]国网甘肃省电力公司电力科学研究院,甘肃兰州730050

出　　处：《电力科技与环保》2015年第1期8-11,共4页Electric Power Technology and Environmental Protection

基　　金：甘肃省电力公司科技项目"高压地下电缆对环境的电磁影响分析研究"(5227221350BZ)

摘　　要：在参照架空输电线路电磁环境特性及其影响因子的基础上,分析预测了地下电力电缆对电磁环境的影响,识别和筛选了地下电力电缆的环境影响因子,并对兰州市区三条典型地下电力电缆的电磁环境进行实测,验证其对环境的影响,分析电缆在地下及地面上磁场衰减规律,最后得出其周围会产生一定的工频磁场,但远小于现有标准中的公众暴露限值,同时,也不会对所提出的敏感对象产生干扰。Firstly,on the basis of referring to the electromagnetic environmental characteristics and impact factors of overhead transmission lines,it predictive analysis on the electromagnetic environment effect of the underground electric power cable,identify and select the main electromagnetic environmental impact factors of the power cable. Secondly,the power frequency electromagnetic fields caused by two typical power cable lines in Lanzhou are tested,which confirm the environment effect of the above analysis and analyze the attenuation pattern of the power frequency magnetic field caused by electric power cable overground and underground. Finally,In conclusion,there is some power frequency magnetic radiation around the cable,but it is very little so that the radiating level is far less than the qualified value of the standards. At the same time,the cable also cannot disturb the electromagnetic sensitive subjects.

关 键 词：电力电缆 环境影响 工频电磁场 衰减 

分 类 号：TN818[电子电信—信息与通信工程]