A Review for Control Strategies in Microgrid

Microgrid, as a buffer and link between renewable energy and Power Grid, represents the development trend of a power energy organizational structure in the future. Microgrid is to promote energy development and management changes in the important carrier, to facilitate energy-saving and emission reduction and to achieve sustainable energy development of great significance. This paper introduces the research status of the microgrid control strategy both at home and abroad, and proposes the future development direction of the microgrid control strategy. This paper first classifies the control strategy of micro power supply, and expounds the research status of three control strategies: V/f control, PQ control and droop control. Then, the overall control strategy of the microgrid is classified. The research status of the four control strategies, namely peer control, master-slave control, hierarchical control and decentralized control is described respectively. Finally, the advantages and disadvantages of various control strategies of the microgrid are elaborated.