This paper mainly explores the optimization method of grounding resistance of transmission line towers.By improving soil resistivity,optimizing grounding device structure and using resistance reducing materials,the grounding resistance of towers can be effectively reduced.At the same time,the measures to reduce the grounding resistance of towers in special mountainous areas are studied respectively.For rock areas,a scheme to reduce the grounding resistance by wrapping the tower foundation with steel cages is proposed,and the grounding resistance is reduced by increasing the effective conductive section of the tower foundation.A dendritic grounding device is designed for soil mountainous area,which reduces the grounding resistance of tower by increasing the number of horizontal grounding electrodes.The above optimization technology can effectively reduce the grounding resistance,improve the lightning withstand level of transmission lines,and ensure the operation safety of transmission lines.
关键词
输电线路/土壤电阻率/接地装置/降阻材料
Key words
transmission line/soil resistivity/grounding device/resistance reducing material
维普
万方数据