考虑接地导体时500kV开关场内的工频电场(英文)  

The Power Frequency Electric Field in 500kV Swtiching Yard with Considering the Earth Electrode

作　　者：李永明[1] 王洋洋[1] 罗鹏[1] 徐禄文 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [2]重庆电力科学试验研究院,重庆401123

出　　处：《电气工程学报》2015年第10期9-14,20,共7页Journal of Electrical Engineering

基　　金：supported by National Natural Science Foundation of China(51277189);Program of Introducing Talents of Discipline to Universities(B08036);Fundamental Research Funds for the Central Universities(CDJXS12151108)

摘　　要：为了深入研究变电站内工频电场在有无考虑站内电气设备接地体影响时的分布情况,本文推导了计算开关场内工频电场的三维模拟电荷法,以500k V变电站为例,对变电站500k V开关场及各类电气设备的接地体进行建模,并进行工频电场分布的计算分析。首先,通过仿真结果与实测结果的对比,验证所建模型的正确性;然后分析了变电站站内有无电气设备接地体影响时的工频电场分布情况。本文所提方法为考虑接地体影响时站内工频电场的计算与分析提供了一种有效、快捷的途径。The distribution of power frequency electric field in the substation under the influence of the earth electrode is studied in this paper.Firstly,the charge simulation method for the calculation of power frequency electric field in switch yard is derived in this paper,and the electric field of500 kV switch yard is analyzed in a 500 kV substation with the earth electrode.Secondly,the modeling of the substation is established.Finally,numerical results are compared to that of measurement for verifying the correctness of the model;then the power frequency electric field distribution in switch yard is analyzed whether the earth electrode of electrical equipment.This work provides an effective,efficient way for the calculation and analysis of the power frequency electric field in the substation with the existence of earth electrode.

关 键 词：变电站 开关场 模拟电荷法 工频电场 接地体 安全防护等级 

分 类 号：TM631[电气工程—电力系统及自动化]