Abstract:  ABSTRACT： In this paper, a grid-friendly optimal scheduling method in electricity market environment is proposed formulti-microgrid system in distribution network, and a day-ahead double-layer scheduling model is established. The paper first constructs the optimization model of distribution network, which reduces the fluctuation of the injection power from transmission network and microgrids to distribution network and improves the economy of distribution network operation by optimizing the output of the microgrids as well as ensuring the proportion of renewable energy generation, so as to increase the enthusiasm of power system to accept microgrids, which is helpful to market operation and development of microgrids in electricity marketing environment. Secondly, in the microgrid layer, the randomness of solar and wind power is described with the multiple scenario technique. The microgrids and distribution network are regarded as different interest subjects and the incentive mechanism for dynamic electricity price is designed to guide the microgrid in accordance with the optimization of distribution network, so as to establish the economic and environmental optimization model of microgrids to coordinate the output of distributed generation. The simulated annealing algorithm is used to solve the model, and the simulation example verifies the rationality and validity of the model.

Key words:  KEYWORDS：  marketing environment, multi-microgrid, grid-friendly, dynamic price incentive mechanism, multiple scenarios technique