Study On Multi-Microgrid System Optimal Scheduling Method Based On Open Market

With the rapid increase of the amount of the micro-grids and the gradual liberalization of the electricity market,microgrid can trade energy not only with distribution network,but also with other microgrids.This paper did the research below about multi-microgrid system optimal scheduling method based on open market:(1)A trade model of multi-microgrid system based on open market has been proposed.It includes the model of wind turbine,photovoltaic,micro-turbine diesel generator and batteries.The effect of each kind of distributed generator in optimal scheduling is also introduced briefly,which did a lot of favor to establis h the optimal scheduling method.(2)An interactive scheduling mode between microgrids and distribution network has been proposed.And an energy trading rule of distribution network with multi-microgrid was established.Both of them guaranteed the orderly energy trading between the micro grids in the multi-microgrid system.(3)A two-level multi-microgrid system optimal scheduling method based on open market has been proposed.The lower level is an optimization problem to maximize each microgrid's profit by optimizing the controlled sources' scheduling.The upper level is a coordination problem for distribution dispatching agency to solve the conflicts of the scheduling results from the lower level.(4)A numerical example of a multi-microgrid with three microgrids indicates that this method can effectively solve the multi-microgrid system scheduling problem,improve the income of each microgrid,and promote the orderly development of distributed energy and microgrid helpfully.