220kV高压输电线路工频电磁场影响因素研究

Study on influential factors of power frequency electromagnetic field under 220kV high voltage transmission line

针对目前日益突出的输电线路电磁环境问题,采用理论计算法,以220kV单回、双回输电线路为例,研究导线对地高度、导线布置方式、导线参数、相序排列方式、相间距离等因素对工频电磁场分布的影响,提出减小高压输电线路电磁环境影响的措施。

Aiming at increasingly noticeable electromagnetic environment problems of power transmission line, taking the 220 kV single -circuit and double -circuit for examples,through theoretical calculation method,the influential factors of power frequency electromagnetic field are studied, which include conductor heights, conductor dispositions and conductor parameters, phase position and phase spacing, distributing characteristic of electric field. The impacts of different line height to ground, conductor configuration, structural parameters, arrangement manners of lines is summarized. At last, some advice and methods of eliminating electromagnetic field under the transmission lines are proposed with regard to protecting environment.