特高压交流线路邻近建筑物时畸变电场的研究  

Study on the Electric Field Intensity of the UHV AC Transmission Lines near Buildings

作　　者：叶青[1] 文远芳[1] 黄韬[1] 张广洲[2] 刘兴发[2] 

机构地区：[1]华中科技大学电气与电子工程学院,武汉430074 [2]国网电力科学研究院,武汉43007

出　　处：《高压电器》2011年第5期5-10,共6页High Voltage Apparatus

基　　金：国网电力科学研究院项目基金(SG0927)~~

摘　　要：1 000 kV晋东南—南阳—荆门特高压交流试验示范工程已投入商业运行,随着输电线路电压等级的升高,电磁环境愈加复杂,而过于恶劣的电磁环境很可能会对附近无线电台站的工作及周围居民和输电线路工作人员的工作和生活产生影响,引起的纠纷也日益增多。基于此,笔者利用CDEGS软件对特高压走廊邻近民房时其周边电场进行仿真计算,并与现场实测数据进行比较。结果表明,仿真计算结果与实测所得数据基本吻合,由此推算出该情况下特高压交流输电线路走廊宽度。最后,对畸变电场的两种有效抑制方法——架设屏蔽线和低压线路进行了相关研究,进而得出这两种方法可以有效减小线路走廊宽度、节约土地资源的结论,以供相关人士参考。The 1 000 kV Jindongnan-Nanyang-Jingmen UHV AC test and demonstration transmission line project has been put into commercial operation.With the increase of voltage,the electromagnetic environment is more and more complicated,which may impose interference on the operation of radio station and the health of the residents and workers around the transmission lines.This paper calculated the electric field around the UHV AC transmission line making use of CDEGS software,and compared the output with the measured data.The result shows that the simulation output coincides with the measured data.According to the simulation output,the corridor width of the UHV AC transmission line is derived.In addition,two methods for suppressing the power-frequency distorted electric filed,i.e.setting shielded transmission lines and lower voltage lines under the UHV AC transmission line,are analyzed,and it is found that both methods can narrow the corridor width.

关 键 词：特高压交流 电磁环境 矩量法 畸变电场 线路走廊 民房 

分 类 号：TM726.1[电气工程—电力系统及自动化]