架空输电线路的防雷与接地设计

Analysis of Lightning Protection and Grounding Design of Overhead Transmission Line

现如今,架空输电线路的高度相对较高,传输电压大,所以很容易发生雷击.为了降低线路发生雷击之后的跳闸率,提升线路的供电安全可靠性与稳定性,进一步优化线路经济效益,从根本上提升防雷水平,架空输电线路防雷的关键就在于杆塔接地设计上,降低杆塔接地电阻可以减小线路在发生雷击之后的跳闸率.鉴于此,文章主要分析架空输电线路的防雷与接地设计.

Nowadays,the height of overhead transmission lines is relatively high and the transmission voltage is large,so lightning strikes are prone to occur.In order to reduce the trip rate after lightning strikes on the line,improve the power supply safety reliability and stability of the line,further optimize the line’s economic benefits,and further improve its own lightning protection level from the fundamental.The key to lightning protection of overhead transmission lines lies in the tower grounding design.Reducing the tower grounding resistance can reduce the trip rate of the line after lightning strikes.In view of this,this article mainly analyzes the lightning protection and grounding design of overhead transmission lines.