输电线路杆塔接地降阻优化技术  

Transmission Line Tower Grounding Resistance Reduction Optimization Technology

作　　者：刘溢烨 Liu Yiye(Fuzhou Weisi Electric Power Survey and Design Co.,Ltd.,Fuzhou,China)

机构地区：[1]福州维思电力勘察设计有限公司,福建福州

出　　处：《科学技术创新》2024年第7期35-38,共4页Scientific and Technological Innovation

摘　　要：本文主要探究了输电线路杆塔接地电阻的优化方法,通过改善土壤电阻率、优化接地装置结构以及使用降阻材料等方法,可以有效降低杆塔的接地电阻。同时,分别研究了特殊山区的杆塔接地降阻措施,对于岩石地区提出了利用钢筋笼包裹杆塔基础的降阻方案,通过增大杆塔基础有效导电截面达到降低接地电阻的目的;对于土质山区设计了一种树枝状接地装置,通过增加水平接地极数量降低杆塔接地电阻。上述优化技术能有效降低接地电阻,提高输电线路的耐雷水平,保障了输电线路的运行安全。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 

分 类 号：TM726[电气工程—电力系统及自动化]