含分布式电源的微电网过电流保护方法  

Over-Current Protection of Micro-Grid with Distributed Generators

作　　者：杨凤惠 张向锋[1] 王致杰[1] 陈舒婷[1] 

机构地区：[1]上海电机学院电气学院,上海200240

出　　处：《上海电机学院学报》2015年第2期89-94,共6页Journal of Shanghai Dianji University

摘　　要：分析了分布式电源的位置、容量对微电网过电流保护的影响,阐述了传统三段式保护配置不能满足分布式电源接入条件下微电网的过电流保护要求。针对美国电力可靠性技术解决方案协会提出的包含分布式电源的微电网模型,给出3种具体的保护方案,以实现分布式电源接入条件下微电网继电保护自动、快速、有选择地动作,从而保证电网安全可靠运行。This paper analyzes negative effects of the location and capacity of distributed gen- erators on a micro-grid. Traditional three-step protection devices cannot meet the requirements of a micro-grid with a large amount of distributed generators. The American Association of Electric Reliability Technology Solutions （CERTS） has proposed a micro-grid model containing distributed generators. Based on the model, this paper presents three specific relay protection devices to en- sure that micro-grid relay protection acts automatically, quickly and selectively.

关 键 词：微电网 过电流保护 分布式电源 继电保护 

分 类 号：TM773[电气工程—电力系统及自动化]