Two-stage game framework for energy management in islanded multi-microgrid system

A multi-microgrid system is composed of multiple low-voltage microgrids and the distributed energy connected to adjacent feeders. Considering the uncertainty factors, this study presents a two-stage game framework to achieve energy management in the daily operation of islanded multi-microgrids. In the upper stage, the power surplus and power shortage conditions of microgrids are analysed and the corresponding profit models are established. Then, during this cooperative game, each microgrid maximises its own profits through transactions and achieves a win-win situation by changing the number of coalition members. In the lower stage, the uncertainty models of both the photovoltaic power generation and the controllable load are constructed to achieve the maximum match between the power generation and the load curve. Finally, it is shown via a practical example that the proposed method can effectively promote the total profit of the islanded multi-microgrid system.