电瓷避雷器Issue(5)：17-26,35,11.DOI:10.16188/j.isa.1003-8337.2025.05.003
有限施工面积条件下配电线路杆塔紧凑型接地降阻方法研究
Compact Grounding Resistance Reduction Method of Distribution Line Tower Under Limited Construction Area
刘伟 1安韵竹 2熊洁 1苏威 1王毅 1张流杰1
作者信息
- 1. 国网湖北省电力有限公司鄂州供电公司,湖北鄂州 436000
- 2. 山东理工大学电气与电子工程学院,山东淄博 255000
- 折叠
摘要
Abstract
The focus of lightning protection for transmission and distribution lines is to reduce the ground-ing resistance of the tower.However,the tower of the distribution line often lacks a certain grounding construction area because it is close to the residential living area,which limits the application of conven-tional tower resistance reduction measures.There are some problems such as the grounding resistance cannot reach the standard.The finite element simulation software COMSOL Multiphysics is used to estab-lish the natural grounding simulation model of the distribution line tower pile foundation,and the influ-ence of soil resistivity,tower depth and other factors on the impact current dispersion characteristics of the pile foundation is calculated and analyzed.Then,aiming at the problems of poor lightning resistance and insufficient construction area for grounding resistance reduction faced by existing multi-circuit distri-bution lines on the same tower,a compact grounding resistance reduction strategy based on flexible grounding module is proposed.The influence of flexible grounding module layout,soil conditions and grounding grid type on the current dispersion characteristics of compact grounding is calculated and ana-lyzed.The laying method and resistance reduction effect of compact grounding device are illustrated by practical application examples.The results show that the compact grounding grid strategy can effectively reduce the grounding impedance of the tower,and the grounding module should be arranged vertically.In practical engineering applications,the measured value of power frequency grounding resistance is below 15 Ω.关键词
配电线路杆塔/紧凑型接地网/散流特性/石墨接地材料/接地模块Key words
distribution line tower/compact grounding grid/dispersion characteristics/graphite ground-ing material/grounding module引用本文复制引用
刘伟,安韵竹,熊洁,苏威,王毅,张流杰..有限施工面积条件下配电线路杆塔紧凑型接地降阻方法研究[J].电瓷避雷器,2025,(5):17-26,35,11.
