摘要
为了保证作业人员带电作业时的安全,需要研究作业人员进入作业区时,身体各部位所承受的电场强度。针对转角塔结构的特点,通过COMSOL有限元仿真软件建立750kV转角塔模型,研究转角塔上单回输电线路、双回输电线路上以及作业人员在导线不同位置作业时场强的变化情况。研究发现:人体周围电场及表面场强随着作业人员在不同作业位置时改变,地面场强远小于高空中输电线路附近位置的电场强度;人体体表场强从头部、躯体到下身因作业位置的不同而不同,同一位置下,头部受场强的影响最为严重,其次为上躯体,然后为下躯体;人体越靠近输电线路,部位体表场强越大。
In order to ensure safety of operators in live working, it is required to study electric field intensity of body parts as they enter into the working zones. Aiming at features of the structure of corner tower, the COMSOL finite element simulation software was used to establish a 750 kV corner tower model for studying variation of electric field intensity of operators on the single-circuit transmission line, double-circuit transmission line and different positions of the wire. The study indicates that electric field around the body and surface electric field intensity change with working positions and ground electric field intensity is far less than electric field intensity of neighbouring position of the high-altitude transmission line. The body surface electric field intensity varies from the head to the body because of different working positions, and at the same position, the head is most severely affected by electric field intensity, then the upper body and afterwards the lower body. The body surface electric field intensity is larger as the human body is closer to the transmission line.
作者
贺霞
朱永灿
张敏
孔敏儒
HE Xia;ZHU Yongcan;ZHANG Min;KONG Minru(College of Electronics and Information, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China;Shaanxi Yulin Energy Group Hengshan Coal & Electricity Co., Ltd., Xi'an, Shaanxi 719199, China)
出处
《广东电力》
2019年第7期106-111,共6页
Guangdong Electric Power
基金
国家自然科学基金项目(51707141)
