特高压同塔双回交流输电线邻近民房处电场计算  

Calculation and Analysis of the Electric Field Intensity of the Building Near the Ultra High Voltage Two Circuit AC Transmission Line on One Tower

作　　者：刘震寰[1] 邬雄[1] 张广洲[1] 路遥[1] 

机构地区：[1]国网电力科学研究院,武汉430074

出　　处：《高电压技术》2009年第8期1849-1855,共7页High Voltage Engineering

基　　金：国家"十一五"科技支撑计划(2006BAA02A05)~~

摘　　要：为了确定特高压同塔双回交流输电线路与邻近民房间的距离,基于模拟电荷的计算方法原理对输电线路邻近民房处的畸变电场进行了分析,并编制了相应的软件。计算结果表明:由于房屋的存在,对线路和房屋之间的电场强度起到了屏蔽作用,电场强度最大值有所降低;房屋顶部的电场强度随着房屋高度的增加而增大,同样由于房屋的屏蔽作用,房屋远离线路一侧的电场强度降低很多;增加导线高度或者向线路外侧移动房屋后,房屋顶部的电场强度有显著的降低。To make the electric strength above roof and other area of the building to satisfy the standard requirements, determination of the distance of transmission lines and building is very important. We analyzed the distorted electric field based on the theory of charge simulation method and program is set up for calculation. The results show that：（a） to calculate electric field strength of typical 1000 kV double circuit on one tower transmission line, because of the shielding effect of the building, the maximum value of electric strength between the transmission line and the building is lower than before; moreover, the electric field strength on the roof of higher building is higher than the lower. For example, the electric strength in middle of the edge of the three storey building＇s roof is 6 kV/ m, higher than the electric field strength of one floor building; meanwhile, because of the shielding effect of the building, the electric field strength side far from the line is lower than before. （b） when the transmission line are hoisted from 25 m to 50 m, the maximum value of electric field strength reduces from 14 to 4.2 kV/m. （c）when the three-storey building is moved away from line from 25 m to 50 m, the maximum value of electric field strength reduces from 14 to 4 kV/m.

关 键 词：特高压 同塔双回 输电线路 畸变电场 电场强度 民房 

分 类 号：TM723[电气工程—电力系统及自动化] TM937.1