Coordinated control of micro-grid based on distributed moving horizon control

This paper proposed the distributed moving horizon coordinated control scheme for the power balance and economic dispatch problems of micro-grid based on distributed generation. We design the power coordinated controller for each subsystem via moving horizon control by minimizing a suitable objective function. The objective function of distributed moving horizon coordinated controller is chosen based on the principle that wind power subsystem has the priority to generate electricity while photovoltaic power generation coordinates with wind power subsystem and the battery is only activated to meet the load demand when necessary. The simulation results illustrate that the proposed distributed moving horizon coordinated controller can allocate the output power of two generation subsystems reasonably under varying environment conditions, which not only can satisfy the load demand but also limit excessive fluctuations of output power to protect the power generation equipment. •The distributed moving horizon coordinated control scheme is proposed for the power balance and economic dispatch problems of micro-grid.•The overall distributed generation system is decomposed into several subsystems with their own local moving horizon controllers.•The power coordinated controller via moving horizon control is designed by minimizing a suitable objective function.•The principle is that wind subsystem is prior while PV subsystem coordinates and the battery is activated when necessary.