### Comparative analysis of electric field effects on the human body induced by ultra high voltage AC transmission line

CHEN Bodong1  LU Mai2  CHEN Xiaoqiang1  HU Yanwen1

1. 1(College of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)
2(Key Laboratory of Opto-Electronic Technology and Intelligent Control, Lanzhou Jiaotong University,
Lanzhou 730070, China)
• Received:2014-07-23 Revised:2014-10-21 Online:2014-12-20 Published:2014-11-17

Abstract:

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.

CLC Number:

• TM81，TL72