广东电力2017，Vol.30Issue(10)：99-103,5.DOI:10.3969/j.issn.1007-290X.2017.010.018
地下金属管道对变电站接地网地表电位的影响
Influence of Underground Metal Pipelines on Earth Surface Potential of Substation Grounding Grid
摘要
Abstract
In order to accurately understand influence of underground metal pipelines on earth surface potential of the grounding grid,this paper calculates earth surface potential distribution of the grounding grid considering current distribution of metal pipelines close to the grid based on field-circuit combination. It analyzes influence of changes of lengths and aper-tures of metal pipelines and performs site test on earth surface potential of the grounding grid of one 34 kV substation. Re-sults indicate underground metal pipelines will decrease earth surface potential near the grounding grid and decrease range is related with length or aperture of the metal pipeline. However scope of the influence is limited within 5 m. The research re-sults may provid basis for fault diagnosis of the grounding grid based on earth surface potential.关键词
变电站/接地网/现场测试/地表电位/金属管道Key words
substation/grounding grid/site test/earth surface potential/metal pipeline分类
信息技术与安全科学引用本文复制引用
谭琪明,沈冬,胡徐铭,陈平,施会,茅晓亮,吕佩佩..地下金属管道对变电站接地网地表电位的影响[J].广东电力,2017,30(10):99-103,5.基金项目
国家自然科学基金项目(51307109) （51307109）
