高压电器2017，Vol.53Issue(5)：41-47,7.DOI:10.13296/j.1001-1609.hva.2017.05.007
城市微电网接地系统选择与设计
Design and Selection of the Grounding Systems for City Micro-grid
摘要
Abstract
In order to obtain a safe and reliable grounding scheme of micro-grid,this paper builds three different grounding models(TN,TT and IT)through the PSCAD/EMTDC in the standard micro-grid model proposed by European ICCS/NTUA.The fault current level of various grounding systems is studied.This paper has verified the importance of RCD and over current protection to react load shell fault through simulation in grounding system.In the security of different grounding system,based on the simulation model,the security of TN grounding system under the total equipotential connection is analyzed,and non-equipotential connection should be configured quickly and reliably RCDs in both TIT and IT grounding system.Through the analysis of fault current level,effects and security,a hybrid grounding system is proposed at last.关键词
微电网/接地方式/剩余电流动作保护/总等电位联接/混合接地系统Key words
micro-grid/grounding type/residual current action protection/total equipotential connection/hybrid grounding system引用本文复制引用
张合栋,杨秀,张美霞,邓虹,赵树青..城市微电网接地系统选择与设计[J].高压电器,2017,53(5):41-47,7.基金项目
国网上海市电力公司科技项目(52094014001Z).Project Supported by Shanghai Electric Power Supply Company of Science and Technology(52094014001Z). （52094014001Z）
