高压电器2025，Vol.61Issue(10)：209-217,236,10.DOI:10.13296/j.1001-1609.hva.2025.10.022
基于铺设方式优化的接地网抗地面沉降断裂研究
Research on Anti-subsidence Fracture of Grounding Grid Based on Optimized Installation Methods
摘要
Abstract
To address the issue of conductor fractures in power system grounding grid caused by land subsidence,a novel grounding grid installation scheme is proposed in this paper,namely,the laying direction of the horizontal con-ductor of the grounding network is optimized from the traditional horizontal laying(width facing up)to vertical laying(thickness facing up).Through the finite element analysis method,a sysmetric simulation and analysis are conduct-ed on the stress and deformation of galvanized flat steel grounding grid under two installation methods when ground subsidence reaches 10 mm,20 mm,50 mm and 100 mm respectively.The results show that the vertically installed grounding grid demonstrates significantly superior performance in terms of both stress and deformation resistance at horizontal conductors and grounding down conductors compared to the horizontally installed configuration.At the ground subsidence level of 100 mm,the stress on the grounding down conductors of the horizontally installed ground-ing grid reaches the yield strength of Q235 steel,whereas the stress on the vertically installed grid's down conductors is only 35.7%of that in the horizontal configuration-well below the yield strength of both grounding conductors and down conductors.The vertical installation method can effectively reduce the stress exerted on both the grounding grid and down conductors during ground subsidence,thereby enchancing the reliability and stability of the grounding system in subsidence-prone environments.This approach provides novel technical insights and safeguarding mea-sures for ensuring the safe operation of power system under complex geological conditions.关键词
地面沉降/变电站/接地网/接地引下线/有限元模拟Key words
ground subsidence/substation/grounding grid/grounding down conductor/finite element simulation引用本文复制引用
齐文艳,李田,黄智豪,叶芳,于金山,毛华,张胜寒..基于铺设方式优化的接地网抗地面沉降断裂研究[J].高压电器,2025,61(10):209-217,236,10.基金项目
国网天津市电力公司科技项目(基于滑坡—沉降地质灾害特性的输变电工程防灾技术研究).Project Supported by State Grid Tianjin Electric Power Company Technology Project(Research on Disaster Prevention Technology for Power Transmission and Transformation Engineering Based on Landslide Settlement Geological Hazards Characteristics). （基于滑坡—沉降地质灾害特性的输变电工程防灾技术研究）
