电力系统自动化Issue(13)：129-136,8.DOI:10.7500/AEPS20140717003
有源配电网中性点接地方式的选择问题
Selection Problems of Neutral Grounding Mode in Active Distribution Networks
摘要
Abstract
The selection of neutral grounding mode is a basic problem in distribution systems.For active distribution networks (ADNs) containing a large amount of distributed generators (DGs),the neutral grounding mode will be decided by both main network and DGs and the single-phase earth fault current and overvoltage will be more complex.So the neutral grounding mode of ADNs needs to be re-examined.Possible grounding mode combinations of main network and DGs are given out.Grounding mode transformation problems,single-phase earth fault current and overvoltage problems in different operating states and different stages of single-phase earth fault handling process including pre-and post-line protection of main network or islanding protection,are analyzed.Then the basic idea about grounding mode selection of DGs for each existing distribution network is proposed,whose neutral grounding modes are determined,and about grounding mode selection of a brand new ADN,without considering all the constraints of insulation and relay protection conditions in existing distribution networks.A preliminary study on neutral grounding mode of ADNs is made. This work is supported by National Natural Science Foundation of China(No.51477184,No.51177096)and National High Technology Research and Development Program of China(863 Program)(No.2012AA050213).关键词
有源配电网/接地方式/分布式电源/接地故障Key words
active distribution network/grounding mode/distributed generator (DG)/earth fault引用本文复制引用
薛永端,郭丽伟,张林利,徐丙垠,李天友..有源配电网中性点接地方式的选择问题[J].电力系统自动化,2015,(13):129-136,8.基金项目
国家自然科学基金资助项目(51477184,51177096) （51477184,51177096）
国家高技术研究发展计划(863计划)资助项目(2012AA050213)。 （863计划）
