微电网孤岛运行的控制策略与仿真分析

Control strategy and simulation analysis of microgrid island operation

微电网是一种特殊形式的有源配电网,它提供了一种分布式电源接入大电网的有效方法,且具有并网和孤岛两种运行模式。笔者在列举讨论对微电网孤岛运行控制的基础上,搭建了基于PSCAD/EMTDA的仿真模型,并通过分布电源(DG)和负荷的投切仿真试验,验证了微电网孤岛运行的可行性。

Microgrid is a special distribution network with distributed generation, providing an effective method for distributed generation contacting to large distributed power grid. Microgrid can operate in two modes： grid -connected mode and islanded mode. This paper listed and discussed the control strategy of microgrid island operation, and built a simulation model, through which simulated DG and load switching to verify the feasibility of microgrid island operation based on PSCAD/EMTDA simulation software.