王 巍 王金全 徐 晔 王春明（中国人民解放军理工大学工程兵工程学院，南京市 210007）
郭香静（郑州航空工业管理学院，郑州市 450000）
马 涛（中国人民解放军理工大学工程兵工程学院，南京市 210007）
Brief Analysis on Grounding of Low-voltage Distribution Network Containing Distributed Generation
Wang Wei Wang Jinquan Xu Ye Wang Chunming（Engineering Institute of Engineering
Corp，PLA University of Science & Technology，Nanjing 210007，China）
Guo Xiangjing（Zhengzhou Institute of Aeronautical Industry Management，Zhengzhou 450000，China）
Ma Tao（Engineering Institute of Engineering Corp，PLA University of Science & Technology，Nanjing 210007，China）
Abstract Development of distributed generation technology in low-voltage distribution network is introduced. Distributed generation is classified into two categories by determining whether neutral point of system can be formed or not. Several structures incorporating typical distributed generation into low -voltage distribution network are proposed，for which， grounding mode is classified and corresponding advantages and disadvantages are analyzed. Failures of different protections caused from different single-phase grounding faults after connection of distributed generation into low-voltage distribution network are discussed. Strategy for protection coordination is presented.
Key words Distributed generation Low-voltage distribution network Grounding system Neutral point Coordination protection
摘 要 介绍分布式发电技术在低压配电网络中的发展现状。以能否构成系统中性点将分布式电源划分为两类，给出几种典型的分布式电源并入低压配电网络的结构，对其接地形式进行归类，分析各自的优缺点。论述分布式电源接入低压配电网络后，不同的单相接地故障点带来不同类型保护失效的问题。提出保护协调的策略。
关键词 分布式电源 低压配电网络 接地系统 中性点 协调保护
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