全球能源互联网（英文）2021，Vol.4Issue(5)：520-530,11.DOI:10.14171/j.2096-5117.gei.2021.05.009
多合一站接地系统优化建设方法及示范应用
Optimal construction method and demonstration application of multi-in-one station grounding system
摘要
Abstract
Mutual influence may be driven by different models and operating mechanisms of grounding systems in multi-in-one substations. Even equipment damage and personal injury will occur in the event of a short-circuit or lightning strike. To meet the construction requirements of different multi-in-one substations, two typical application modes of grounding systems in multi-in-one substations are analyzed in this paper: plane and longitudinal layout schemes. First, the safety index and withstand voltage of secondary equipment in multi-in-one substations are introduced. Second, the plane layout scheme of grounding grids is examined. Based on a 35-kV multi-in-one substations in Shanghai, it was verified that the overall grounding grid needs to be laid to meet the safety of secondary equipment in the station. Finally, considering that it is feasible to rebuild the upper layer of a substation, the longitudinal layout scheme of the grounding grid in multi-in-one substations is also examined. Safety assessment is carried out in terms of aspects such as short-circuits and lightning strikes, and relevant optimization construction methods are analyzed. In this study, a real 35-kV substation in Shanghai was selected as an example. Simulation and field tests based on Current Distribution, Electromagnetic Fields, Grounding and Soil Structure Analysis (CDEGS) software verified that the proposed construction scheme can achieve safe operation of multi-in-one substations. This construction idea can also serve as a reference for the future construction of multi-in-one substations.关键词
优化建设/安全性评估/CDEGS/多合一站/防雷保护Key words
Optimizing construction/Safety assessment/CDEGS/Multi-in-one substations/Lightning protection引用本文复制引用
蔡言兴,纪航,王大伟,雷兴,孙宇贞,袁尚青..多合一站接地系统优化建设方法及示范应用[J].全球能源互联网（英文）,2021,4(5):520-530,11.基金项目
This work was supported by National Natural Science Foundation of China(No.92067105)and the science and technology project of State Grid Shanghai Municipal Electric Power Company(No.5209211900VD). （No.92067105）
