摘要
由于微网中常含有风力、光伏、柴油发电机组发电及电池储能等大量通过逆变器并网的分布式电源,微网系统在孤岛运行模式下的动态响应特性与并网模式时存在很大的差异。对含多种分布式能源的微网系统,利用PSCAD/EMTDC软件建立其孤岛运行方式下动态模型,研究了其安全稳定特性,发现该系统在短路故障后主要存在频率稳定问题,分析了影响该系统稳定性的各种因素。
When a microgrid has various types of distributed energy sources such as wind, photovoltaic and battery energy storage devices, its dynamic response characteristics in islanded operation are different from that in its intetration with a grid through power electronic converters. For a microgrid with various types of distributed energy sources, this paper sets up its dynamic simulation model in islanded operation with PSACA/EMTDC, and studies its dynamic characteristics, pointing out that there are mainly problems in frequency stability when short failures occurred in the system, and furthermore analyzes the various factors influencing the system stability.
出处
《南方电网技术》
2013年第4期71-74,共4页
Southern Power System Technology
关键词
微网系统
孤岛运行
安全稳定分析
分布式能源
microgrid
island operation
stability analysis
distributed energy resources
