
1. 1(兰州交通大学自动化与电气工程学院 ),兰州,730070
2. 2(兰州交通大学光电技术与智能控制教育部重点实验室 ),兰州,730070
[ "陈博栋,男,1988年2月出生,2010年毕业于兰州交通大学,现为该校在读硕士研究生,研究方向为电力系统及其自动化" ]
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陈博栋, 逯 迈, 陈小强, 等. 特高压交流输电线路对人体电场效应的对比分析[J]. 辐射研究与辐射工艺学报, 2014,32(6):10-060501.
陈博栋, 逯 迈, 陈小强, 等. 特高压交流输电线路对人体电场效应的对比分析[J]. 辐射研究与辐射工艺学报, 2014,32(6):10-060501. DOI: 10.11889/j.1000-3436.2014.rrj.32.060501.
本文通过有限元分析方法计算了1 000 kV输电线路下方简化人体模型的电场效应,比较分析了不同塔型时人体中的感应电场及其分布情况。结果表明:人体周围电场并不是均匀分布的,而是产生了畸变;人体较细的部位(如颈部与腿部)电流密度较大;与普通型输电线路相比,紧凑型线路下人体内感应电流密度较小;中枢神经系统组织的最大感应电流为远小于2 mA?m−2安全限值;与紧凑型线路相比,普通型线路中枢神经系统组织的电场强度较大,但其最大感应电场仍小于20 mV?m−1的光幻视阈值。研究表明,特高压交流输电线路下人体感应电流及电场均低于根据ICNIRP导则推荐的安全限值。
To study the influence of ultra high voltage (UHV) AC transmission line frequency electric field on the human body, finite element analysis method was used to calculate electric field effect of the simplified human body model under 1000 kV transmission line. Then, comparative analysis of different towers was carried out to show the differences in the induced electric field and its distribution in the human body. The results indicated that electric field around the body is not evenly distributed, and distortion was produced; current density in the small parts of human body (e.g. the neck and legs) is high; compared with compact transmission lines, normal transmission lines induce smaller current density in the human body; the maximum induced current in the central nervous system is much smaller than safety limits of 2 mA?m−2; electric filed strength in the central nervous system under normal transmission lines is high, but the maximum induced electric field is still less than 20 mV?m−1, which is the phosphene threshold value. Studies demonstrate that induced current and electric field in the human body under UHV AC transmission line are both less than the reference levels from the International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines. The results can not only provide the basis for calculation of electromagnetic exposure of the real human body, but also provide reference for electromagnetic exposure assessment standard of UHV power transmission engineering in China.Cited
特高压交流输电工频电场有限元法感应电流密度感应电场
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