Power management strategies for microgrid-A short review

Microgrids are the key solution to implement Smart Grid for integration of renewable and distributed energy resources. To make it fully use the renewable resources with intermittent feature, much effort has been made to construct demonstrative projects and investigate a proper power management. The methods used in the most popular hierarchical structure with three layers: primary control, secondary control and tertiary control (optimization) are reviewed and compared respectively. Besides, the distribution solution of power management using multi-agent system (MAS) also is investigated and analyzed, in which the energy balance can be achieved by negotiations among agents. Finally, some conclusions and perspectives are presented.