500 kV垂直排列双回紧凑型输电线路电磁环境研究

Study on Electromagnetic Environment of 500 kV Vertically Arranged Double Circuit Compact Transmission Lines

针对双回导线垂直布置的线路电磁环境,以500 kV垂直排列双回紧凑型输电线路为例,分析其电场、工频磁场、无线电干扰和可听噪声等电磁环境指标,结果表明,导线对地距离大于11.0 m后,线路电磁环境满足规范的限值要求,比常规双回线路节约40%,可大幅降低沿线房屋拆迁费用及工程建设难度。

In view of the electromagnetic environment of the line with double circuit conductors arranged vertically,the electric field,power frequency magnetic field,radio interference,audible noise and other electromagnetic environment indexes of 500 kV vertical arranged double circuit compact transmission line are analyzed.The results show that when the distance between the conductor and the ground is more than 11 m,the electromagnetic environment of the line meets the limit requirements of the code,saving 40%compared with the conventional double circuit line,which can greatly reduce the cost of house demolition and the difficulty of project construction along the line.