杆塔接地技术探讨

输电线路杆塔接地装置通过杆塔或引下线与避雷线相连,其主要作用是将击于输电线路的雷电流引入大地,以减小雷击引起的停电和人身事故。无疑,降低杆塔接地装置的接地电阻是提高线路耐雷水平的一项十分重要的措施。本文对冲击接地电阻的计算及接地电阻偏高的原因进行了讨论,并提出了降低输电线路杆塔接地电阻的措施。

Discussion on the Grounding Technology of the Tower

Passing through the tower or the down-lead, the tower grounding device of power transmission line is connected to overhead grounding wire. Its main function would be to lead the lightning current that strike to transmission line into the earth. Without fail, to reduce grounding resistance of the tower grounding device would be an important measure for improving the ensure-lightning level of transmission line. In this article, how to calculate the impact grounding resistance and why the grounding resistance is on the high side have been discussed, and the measure to reduce the grounding resistance of the tower of transmission line also has been presented.