Research On Daily Ahead Economic Dispatch Of Micro-grid

In recent years, the global energy crisis and environmental pollution problems highlighted, makes one of micro power grid in the spotlight. With the gradually mature of the micro grid technology and the deepening of the engineering application practice, the micro grid economic operation problem to be solved.This article first introduced the research background and significance of this topic, and the micro grid at home and abroad summarized the research status quo of economic operation;Secondly expounds the typical structure and operation mode of the micro grid and energy management system, and on the basis of predecessors’ research has established the mathematical model of the micro power supply, including fuel cost, depreciation cost of initial investment and operation maintenance cost, environmental cost, heating power compensation costs and CHP system run economic indicators, such as the income method;Again according to the micro power grid interconnection and operation features of the isolated net running, established under the two kinds of operation modes of different research content, and according to the different scheduling rules fully consider the operation of the micro grid economic indicators and the relevant constraints, respectively, set up under the two kinds of operation modes of a micro power grid economic operation model, and also according to the characteristics of the different operation mode and the micro power generator characteristics, respectively, puts forward the interconnection and the isolated net running economic optimization scheduling policy;Finally, with a wind turbine, photovoltaic cells, micro gas turbine, fuel cell and battery type cogeneration micro power grid as an example, considering the ladder electricity price policy, on the basis of micro power grid were obtained by using genetic algorithm(ga) in each period in the next days of power generation planning and with big power grid electricity trade plan, and through the analysis of economic operation to verify the proposed model and the feasibility and effectiveness of economic optimization scheduling policy.