부산대학교 도서관

Microgrid and distributed generation are more and more widely used in power systems. In this background, a control strategy based on consistency is proposed in this paper, to improve the optimal regulation ability of the AC/DC hybrid microgrid groups. The control strategy is divided into two levels: control strategy within a subnet and control between microgrid groups. At the level of subnet control, the power mapping factor and secondary adjustment term are introduced into the traditional droop control, to realize the autonomous and stable optimization in the island mode of a single sub microgrid. At the level of inter microgrid groups control strategy, the local control strategy of interlinking converter based on average power mapping factor is constructed, and the compensation term based on consistency is introduced to realize the power optimization operation between different microgrids jointly. Finally, the simulation model is established by Matlab/Simulink to prove the effectiveness of the method.