Dynamic Economic Dispatch of AC/DC Microgrid Based on Finite-Step Consensus Algorithm

AC/DC microgrid is the main trend of microgrids’ development, and dynamic economic dispatch is regarded as an important strategy to ensure the economic and safe operation of microgrid system. In this paper, a dynamic economic dispatch model of AC/DC microgrid is developed with the objective of minimizing the daily operation cost of controllable units. Furthermore, a distributed algorithm based on finite-step consensus algorithm is proposed, in which the incremental cost of each distributed generation unit is set as a consensus variable, and all units can obtain the optimal values by exchanging information only with its neighboring. In addition, the algorithm can converge to the optimal solutions in finite steps, which greatly reduces the convergence time. The effectiveness of the proposed model as well as the algorithm is verified by simulation examples.