Multi-objective Optimal Operation of AC/DC Hybrid Microgrid Considering the Combination of Electric Energy Router Control Modes

The combination of the control modes of Electric Energy Routers (EER) will affect the power flow distribution in the microgrid with multi-EER. A multi-objective optimal operation model for the AC/DC hybrid microgrid with the EERs is presented to minimize operation cost and power loss. The NSGA-II algorithm is employed to solve the problem to obtain the optimal combination schemes of the control modes of the EERs at each hour as the form of the Pareto front. Then a merged method is proposed to synthesize the 24-hour Pareto front based on the Pareto fronts at different hours. The results show that the proposed method is more efficient than the direct calculation of the 24-hour Pareto front. This paper also explores the influence of wind and PV power generation uncertainty on the Pareto front.