微电网结构与控制模式分析

Analysis on Structures and Control Approaches of Microgrids

微电网是一种将各种分布式发电组合起来为当地负荷提供电能的中、低压小型电网,能在并网和孤岛两种模式下运行,它能提高负荷侧的供电的可靠性。本文简单介绍了国内外微网的定义及其异同,按照微网结构和控制模式对当前的实验室微网和示范工程加以分类,并对其机理进行了简要的分析和阐述。

Microgrid is a medium or low voltage grid which provide electricity for the local loads with distributed generation. It can operate either in gdd-connection mode or islanding mode, and it is pointed out that microgrid can provide more reliable power supply for loads. This paper simply introduces the definition of microgrids, their similarities and differences. And the current laboratory microgrids and demonstration projects are classified according to their structure and control mode, and then their mechanism are briefly analyzed and expounded.