特高压直流输电线路离子流作用下人体电场效应分析
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兰州交通大学光电技术与智能控制教育部重点实验室,兰州交通大学光电技术与智能控制教育部重点实验室,兰州交通大学自动化与电气工程学院

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TL72

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等。主要研究领域为生物医学电磁学、电磁暴露安全评估E-mail:mai.lu@hotmail.com。


Analysis on Electric Field Effect of Human Body under Ion Current in UHVDC Transmission Lines
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Key laboratory of Opto-electronic Technology and Intellingent Control,Lanzhou Jiaotong University,,College of Automation and Electrical Engineering,Lanzhou Jiaotong University

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    摘要:

    利用Comsol有限元仿真软件建立特高压直流输电线路和人体的三维模型,主要分析了输电线路产生的静电场和离子流作用下产生的合成电场两种情况下人体电场效应,以及在不同的风速下合成电场对人体电场效应。结果表明:在合成电场下:人体周围,人体内部以及头部的电场最大值均是静电场情况下的2.7倍左右,说明离子流作用下增加的电场是不可忽略的,并且对人体产生更大的作用;不同的风速情况下人体周围,人体内部以及头部的电场是不同的,风速逐渐增大,其电场值逐渐减小,说明在风速作用下,人体周围的离子流发生了变化并减小,且也减小了合成电场的大小,进而对人体的作用也变小。根据国际非电离辐射防护委员会(International commission on non-ionizing radiation protection, ICNIRP) 导则限值对比分析,静电场和合成电场下人体内部电场最大值均超过普通民众限值0.4V/m和专业人员限值0.8V/m,而两种情况下的人体头部电场最大值在普通民众限值内,但是对于长期居住在特高压直流输电线路周边的居民会有一定的健康风险,因此在实际建设中需采取一定的降低电磁暴露防护措施或者避免穿越居民区。

    Abstract:

    : The establishment of three-dimensional model of UHVDC transmission line and the human body by using the finite element software Comsol, the human body mainly analyzes the electric field effect of electrostatic field and ion transmission lines produced by the flow under the action of the electric field under two kinds of conditions, and in different wind speeds, the synthesis of electric field on the human field effect. The results showed that: in the synthesis of electric field around the human body, the human body: the internal and the head of the electric field is about 2.7 times the maximum value of electrostatic field under the condition that the increase of the electric field effect of ion flow can not be ignored, and have a greater effect on the human body; around different wind speed conditions, and human body the head of the electric field is different, the wind speed increases, the electric field value decreases gradually, in the wind under the action of ion flow around the human body changes and reduce, and also reduce the size of the electric field, and the effect on the human body is also smaller. According to the International Commission on non ionizing radiation protection (International Commission on non-ionizing radiation protection, ICNIRP) - limit comparative analysis of electric field inside the human body electrostatic field and electric field under the maximum limit of 0.4V/m are more than ordinary people and professionals in the limit of 0.8V/m, and two cases of human head electric field the maximum value in the limit of ordinary people, but for long-term residence in UHVDC transmission lines surrounding residents will have certain health risks, so in the actual construction should take some protective measures to avoid or reduce the electromagnetic exposure through the residential area.

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侯立伟,逯迈,张利航. 特高压直流输电线路离子流作用下人体电场效应分析[J]. 科学技术与工程, 2017, 17(25): .
HOU Liwei,,ZHANG Lihang. Analysis on Electric Field Effect of Human Body under Ion Current in UHVDC Transmission Lines[J]. Science Technology and Engineering,2017,17(25).

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  • 收稿日期:2017-01-18
  • 最后修改日期:2017-04-18
  • 录用日期:2017-05-05
  • 在线发布日期: 2017-09-13
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