线路避雷器对66kV同塔双回输电线路防雷性能影响的研究

Research on Influence of Line Arrester on Lightning Protection Performance of 66kV Double-Circuit Transmission Lines on the Same Tower

安装线路避雷器是应用最为广泛的输电线路防雷措施.为研究线路避雷器对66kV同塔双回输电线路防雷性能的影响,文中利用电力系统电磁暂态计算程序(ATP-EMTP)对某地区66kV同塔双回输电线路进行建模仿真,分析线路避雷器对杆塔电位的影响,并得到了安装2支~4支线路避雷器时的最佳安装位置.对于66kV同塔双回输电线路,安装2支避雷器时,建议安装在上横担的两相导线;安装3支避雷器时,建议在上横担的两相导线安装2支,在下横担的相导线安装1支;安装4支避雷器时,建议在上横担和下横担各安装2支避雷器.

Installation line arrester is the most widely used lightning protection measure for transmission lines. In order to study the influence of line arrester on the lightning protection performance of 66kV double-circuit transmission line on the same tower,this paper uses the electromagnetic transient calculation program (ATPEMTP) of power system to simulate and simulate the 66kV double-circuit transmission line on the same tower and analyze the line arrester. The influence on the tower potential and the best installation position when installing 2 ~4 line arresters. For the 66kV double-circuit transmission line on the same tower,when installing two arresters,it is recommended to install the two-phase conductor on the upper crossarm. When installing three arresters,it is recommended to install two on the two-phase conductor of the upper crossarm. Install one wire;when installing four lightning arresters,it is recommended to install two lightning arresters on the upper cross arm and the lower cross arm.