Some Considerations about Grounding Design of Substation Room in Civil Buildings

Han Zhanqiang（Beijing Institute of Architectural Design，Beijing 100045，China）

Abstract Based on the most basic circuit theory，the analysis method for the grounding design of substation room is put forward；taking the TN system as an example，the existing problems in the currently and commonly used collective drawings and practical engineering are pointed out；and finally a more reasonable method of grounding is summarized.

Key words Grounding Current path Transformer Low-voltage switchgear cabinet Neutral point grounding mode Stray current

 

摘 要 从最基本的电路理论出发，提出了变配电室接地设计的分析方法，以TN系统为例，指出了目前国内常用图集和实际工程中存在的问题，最后总结出较为合理的接地方式。

关键词 接地 电流路径 变压器 低压开关柜 中性点接地方式 杂散电流