Abstract：This paper proposed a novel optimal dispatch method of distribution network with microgrid. The goal of the method is to minimize the operation cost of distribution system by considering the power regulation adequacy of microgrid. To evaluate the regulation adequacy, the maximum ′charging′ and ′discharging′ power of microgrid in next dispatch horizon were calculated based on unbalanced power prediction under multi-time scale. A minimum cost maximum flow algorithm was proposed to solve the optimization problem. Furthermore, the reactive power optimization of distribution network was calculated based on optimal dispatch. Simulation studies demonstrate that, compared with the normal distribution network dispatch method by considering microgrid day-head scheduling curve, the proposed dispatch method can reduce system operation cost and network loss effectively and improve the voltage qualification rate.
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2017, Vol. 32 
