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Real-time energy management strategies for microgrids

This paper proposes two real-time energy management strategies from both the perspectives of economy and stability, which could be categorized as optimization method and heuristic method. The optimization method constructs an optimization model, aiming at minimizing the total operational cost in least violation of the schedule, to yield a real-time power dispatch scheme for distributed generators (DGs). The heuristic method dispatches the deviated power from schedule based on economy and feasibility. Both methods are applicable to microgrids in different scenarios. Case studies were conducted to verify the effectiveness of the proposed strategies. The results indicate that the optimization method is efficient to handle complicated situation considering various constraints while the heuristic method can provides a good real-time scheme with low time consumption.