特高压直流输电线路合成电场强度对人体影响分析  

Analysis on Influence on Human Body by Compound Electric Field Strength of Ultra-high Voltage DC Power Transmission Lines

作　　者：马爱清[1] 陈吉[1] 徐东捷 

机构地区：[1]上海电力学院电气工程学院,上海200090

出　　处：《广东电力》2016年第1期97-101,118,共6页Guangdong Electric Power

基　　金：国家自然科学基金项目(51007055)

摘　　要：针对特高压直流输电线路所引起的电磁环境问题,使用ANSYS软件建立了接近人体形状的人体模型。利用该模型,以四川向家坝到上海奉贤的±800 kV特高压输电线路为例,仿真了考虑人体对地绝缘和人体接地两种情况下人体内部电场强度分布,并在此基础上,利用APDL语言编写程序计算了人体距离输电线路不同距离,以合成电场强度对人体电场的影响。计算结果表明:人体对地绝缘和人体接地时,最大电场强度值均出现在腋下,分别为27.9 mV/m和13.6 mV/m;随着距输电线中心不同距离的变化,人体内部最大电场强度变化呈抛物线形式变化,最大值出现在距输电线中心的18 m处,为650 mV/m,略高于国际非电离辐射防护委员会(International Commission on Non-ionizing Radiation Protection,ICNIRP)规定的人体在高压输电线路不同曝露情形下的曝露电场强度限值,而在此距离时头部的电场强度为110 mV/m,则处于ICNIRP规定的限值范围内。In allusion to the problem of electric magnetic environment caused by ultra-high voltage DC power transmission lines, ANSYS software is used to established a human body model close to human body shape. Taking ＋ 800 kV ultra-high voltage power transmission line from Sichuan Xiangjiaba to Shanghai Fengxian as an example, this model is used to simulate distribution of electric field strength inside human body under two conditions including human body ground insulation and hu- man body grounding, in addition, APDL language is used for programming and calculating different distances between hu- man body and power transmission line so as to analyze influence on human body electric field by compound electric field strength. Calculation results indicate that at the time of human body ground insulation and human body grounding, maxi- mum electric field strength values both occur under the armpit, which are respectively 27.9 mV/m and 13.6 mV/m. With changes of different distances being apart from the center of power transmission line, change of the maximum electric field strength inside human body may show a parabola curve , and the maximum value occurs at the point of 18 m being apart from the center of power transmission line which is 650 mV/m and somewhat higher than the limit value of exposed electric field strength for human body under different exposed situations of high voltage power transmission lines regulated by Inter- national Commission on Non-ionizing Radiation Protection （ICNIRP）. At this time the electric field strength being apart from the head is 110 mV/, which is within the specified limit value range.

关 键 词：特高压直流输电线路 合成电场强度 人体 APDL语言 

分 类 号：TM726.1[电气工程—电力系统及自动化]