带电作业人体电场分布及等电位进入路径仿真研究
Simulation of body electric field distribution and equipotential entry path of live working
秦威南 1郭云鹏 2汤春俊 1谢诚3
作者信息
- 1. 国网金华供电公司,浙江金华 321000
- 2. 国网浙江省电力有限公司,浙江 杭州 310016
- 3. 武汉大学电气与自动化学院,湖北武汉 430072
- 折叠
摘要
带电作业是一种在高压电气设备上进行不停电检修、测试的常用方法.针对不同的塔型需考虑不同的作业方式.对于典型的500 kV输电线路,由于避雷器的存在改变了间隙结构,因此分析这种情况下作业人员的体表电场对于选择带电作业方式以及保证作业人员的安全具有重要意义.以含有避雷器的500 kV输电线路为例,通过选择典型杆塔间隙结构建立相应的有限元计算模型,分析带电作业安全距离及空间电场的影响因素,计算不同带电作业方式下作业人员处于杆塔不同位置的电场强度,并给出了进入等电位的相对安全路径,为输电线路带电作业智能化监控及风险预警提供技术参考.
Abstract
Live working is a common method for on-line maintenance and testing of high-voltage electrical equipment.Different operation modes need to be considered for different tower types.For a typical 500 kV transmission line,the existence of lightning arrester changes the gap structure,so analyzing the surface electric field of operators in this case is of great significance for selecting live working methods and ensuring the safety of operators.Taking a 500 kV transmission line with lightning arrester as an example,this paper selects a typical tower gap structure to establish the corresponding finite element calculation model,analyzes the influencing factors of live working safety distance and space electric field,calculates the electric field intensity of operators in different positions of towers under different live working modes,and gives the relative safe path to enter the equal potential,which provides technical reference for intelligent monitoring and risk early warning of live working of transmission lines.
关键词
带电作业/人体电场/有限元计算/风险预警Key words
live working/human electric field/finite element calculation/risk early warning引用本文复制引用
出版年
2024
NETL
NSTL
万方数据