内蒙古电力技术2026，Vol.44Issue(2)：48-55,8.DOI:10.19929/j.cnki.nmgdljs.2026.0020
基于灰色关联法的直流接地极电场特性影响规律及参数灵敏性分析
Analysis of Influence Pattern and Parameter Sensitivity of Electric Field Characteristics of DC Grounding Electrodes Based on Grey Relational Analysis Method
摘要
Abstract
As an important component of high-voltage direct current(HVDC)transmission system,the electric field distribution characteristics of DC grounding electrode have a significant impact on the safe and stable operation of the system as well as the surrounding environment.CDEGS software is used to establish simulation models of linear,star-shaped,single-ring,and double-ring DC grounding electrodes for electric field characteristics.Comparative analysis shows that the double-ring DC grounding electrode performs best in terms of electric field distribution characteristics and current dissipation performance.For the double-ring DC grounding electrode,the effects of soil resistivity,grounding electrode burial depth,and inner and outer ring radii on its electric field characteristics are thoroughly investigated.The grey relational analysis method is proposed to quantify the sensitivity of each parameter to the surface potential and step voltage.The results indicate that surface potential and step voltage are positively correlated with soil resistivity and negatively correlated with the grounding electrode burial depth and radius.Grey relational analysis shows that soil resistivity is the dominant factor affecting surface potential,with a correlation coefficient of 0.897 3.For step voltage,the influence of soil resistivity and electrode burial depth is comparable,with correlation coefficients of 0.800 5 and 0.794 7,respectively.Moreover,when the ratio of the inner to outer ring radius of the grounding electrode is 0.728,the uniformity of the electric field distribution is optimal.关键词
直流接地极/电场特性/双圆环形/土壤电阻率/灰色关联分析Key words
DC grounding electrode/electric field characteristics/double-ring/soil resistivity/grey relational analysis分类
信息技术与安全科学引用本文复制引用
贾慧杰,王英杰,车传强,赵顺,刘琦,刘学芳..基于灰色关联法的直流接地极电场特性影响规律及参数灵敏性分析[J].内蒙古电力技术,2026,44(2):48-55,8.基金项目
内蒙古电力(集团)有限责任公司科技项目"基于脉冲涡流无损探测的接地网缺陷及质量评估系统"(2024-4-3) （集团）
