10 kV配电线路临电作业人体电场分布研究  

Study on Human Body Electric Field Distribution in 10 kV Distribution Lines Temporary Electricity Operation

作　　者：王丹瑜 胡南南 赵梓钧 夏俊杰 朱珠 范绍祺 吕建聪 杨家全 WANG Danyu;HU Nannan;ZHAO Zijun;XIA Junjie;ZHU Zhu;FAN Shaoqi;LV Jiancong;YANG Jiaquan(Department of Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;Power Science Research Institute of Yunnan Power Grid Co.,Ltd.,Kunming 650217,China)

机构地区：[1]昆明理工大学电力工程学院,云南昆明650500 [2]云南电网有限责任公司电力科学研究院,云南昆明650217

出　　处：《电力科学与工程》2024年第9期44-52,共9页Electric Power Science and Engineering

基　　金：云南省科技计划资助项目(YNKJXM20210199)。

摘　　要：由于10 kV配网架空线路电压等级相对较低,人体接近带电线路附近时表面电场集中对人体带来的影响未得到足够重视和研究。针对10 kV配电线路人体电场分布问题,提出了一种可等效真人的仿生人模拟技术,代替真人进行10 kV单回线路临电作业及故障场景实测探究。给出了具体的电场仿真模型中人体模型的等效参数。通过在室内搭建理想10 kV配电线路结合仿生人进行实测,并基于有限元分析的三维仿真计算获得电场在特定空间位置的场强分布数据,探究多场景下的人体电场分布情况。结果表明:将人体作为均匀介质电导体,等效相对介电常数设置为200左右时,可获得较为接近真实临电作业人体的电场分布情况。以人体位于3种故障时A相线路正下方0.62 m处,并按照从大到小排列顺序为例,电场值BC两相开路>C相开路>B相开路。研究结果可为10 kV配电线路人体静电安全防护提供参考。Due to the relatively low voltage level of overhead lines in 10 kV distribution network,the influence of surface electric field concentration on human body when human body is near the live line has not been paid enough attention and studied.Aiming at the problem of human body electric field distribution in 10 kV distribution lines,a bionic human simulation technology which can be equivalent to a real person is proposed to carry out temporary power operation and fault scenarios measurement of 10 kV single circuit lines.Through building ideal 10 kV distribution lines indoors and combining it with the bionic human for measurement,and using three-dimensional simulation calculation based on finite element analysis to obtain the field intensity distribution data of the electric field in a specific spatial position,the distribution of the human body electric field in multiple scenarios is explored.The results show that when the human body is used as a uniform dielectric conductor and the equivalent relative permittivity is set to about 200,the electric field distribution of the human body on real temporary electricity operation can be obtained.When the human body is located at 0.62 m directly below the A-phase line in three kinds of faults,taking the order of the electric field values from high to low as an example,BC two-phase open circuit>C-phase open circuit>B-phase open circuit.The research results can provide reference for the safety protection of human body static electricity in 10 kV distribution lines.

关 键 词：有限元分析 人体安全 空间电场分布 10 kV配电线路 临电作业 

分 类 号：TM81[电气工程—高电压与绝缘技术]