电瓷避雷器Issue(6)：98-105,8.DOI:10.16188/j.isa.1003-8337.2026.06.012
基于CDEGS土壤冻结状态下接地网安全性能研究
Safety Performance of Grounding Grid Under Soil Freezing State Based on CDEGS
张文龙 1李承阳 2张玉东 3吴金玲 1孟垂懿 1原欣 1黄硕1
作者信息
- 1. 沈阳工程学院国际教育学院,沈阳 110000
- 2. 国家电网哈尔滨供电公司,哈尔滨 150000
- 3. 南方电网江门市供电公司,广东江门 529000
- 折叠
摘要
Abstract
The main function of the grounding network in a substation is to provide a channel for the flow of fault currents.A sound grounding network is an important guarantee for the normal operation of the power system and the safety of equipment and personnel in the substation.The author uses the interna-tionally renowned power system grounding analysis software CDEGS to study the safety parameters of the grounding network of a 110 kV substation with seasonal frozen soil.It analyzes the changes in safety per-formance parameters such as grounding resistance,ground potential rise,and shunt coefficient of the grounding network under soil freezing conditions,aiming to achieve a multi index evaluation and analysis of the safety and optimization measures of the grounding network of substations with seasonal frozen soil.The research results indicate that when the frozen layer increases below the buried depth of the grounding grid,the grounding resistance,shunt coefficient,and contact and step voltage of the grounding grid will gradually increase.At this time,the comprehensive impact of grounding fault current,grounding resist-ance,and shunt coefficient on its ground potential rise should be considered to choose reasonable resist-ance reduction measures or layout plans.关键词
变电站/CDEGS/季节性冻土/安全性能/接地网Key words
substation/CDEGS/frozen soil areas/safety performance/grounding grid引用本文复制引用
张文龙,李承阳,张玉东,吴金玲,孟垂懿,原欣,黄硕..基于CDEGS土壤冻结状态下接地网安全性能研究[J].电瓷避雷器,2025,(6):98-105,8.
