微网运行模式及控制策略研究

微网技术解决了分布式发电大规模并网的问题,提高了可再生能源的效能,是分布式发电的高级利用形式。介绍了微网和并网开关的基本结构,分析了微网的运行模式,包括并网运行时微网的并网标准、微网与大电网的相互作用、孤岛运行时孤岛检测与孤岛划分。针对微网在不同运行模式下,其内部分布式电源运行特性不同的特点,对微网的控制策略展开深入的研究。

Microgrid Operation Modes and Control Strategies

Microgrid technology serves as a solution to the problem of large-scale integration of distributed generation (DG) into power grid,the senior utilization mode of DG to enhance the renewable energy efficiency. This paper introduces the basic structure of microgrid and grid connection switch,and analyzes the microgrid operation mode,its grid connection standards,interaction with power grid,as well as islanding detection and classification in case of islanding. Considering the different characteristics of DG operation when microgrid runs in different modes,in-depth research has been conducted on the micrcogrid control strategies.