民用建筑物内10 / 0. 4 kV变电所接地简析

董 青（悉地（北京）国际建筑设计顾问有限公司，北京市 100013）

Brief Analysis of 10 / 0.4 kV Substation Earthing in Civil Buildings

DONG Qing（CCDI（Beijing)International Architectural Design

Consultants Co.,Ltd.,Beijing 100013，China)

Abstract： For the common practices of 10 / 0.4 kV substation earthing in civil buildings,the advantages and disadvantages of different earthing designs are compared and problems are discussed by analyzing current paths during normal operation and at fault,so as to put forward principles of substation earthing design to provide reference for engineering design.

Key words：earth‑electrode network；MET；earthing conductor；protective earthing conductor；functional earthing conductor；protective equipotential bonding；protective bonding conductor；earth fault current

摘　要：主要针对民用建筑物内10 / 0.4 kV变电所接地的几种常见做法，通过对正常工作和故障时电流路径的分析，对比不同接地设计做法的优劣和问题所在，提出变电所接地设计原则，为工程设计提供参考。

关键词：接地网；总接地端子；接地导体；保护接地导体；功能接地导体；保护等电位联结；保护联结导体；接地故障电流

中图分类号：TU852   　　　　   文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2021.03.003