Dynamic dispatch of grid-connected multi-energy microgrids considering opportunity profit

This paper presents a new dispatch strategy for grid-connected combined cooling, heat and power (CCHP)-based multi-energy microgrids under the time-of-use (TOU) pricing. An energy transfer matrix is used to model the multi-energy flows among all the units including renewable energy sources (RES), a CCHP generator, power exchanges, an electrical energy storage (EES), an air conditioner and a fuel cell from the system perspective. Then, an optimal multi-period dispatch model is proposed considering the opportunity profit from EES. The proposed strategy is tested on the data from a realistic microgrid in Queensland, Australia. Compared with two traditional dispatch strategies, the simulation results indicate that the proposed dispatch strategy could effectively reduce the net operation costs and better schedule the distributed generation units in grid-connected multi-energy microgrids.