Study On Microgrid Economic Dispatch Model Based On Multi-objective Optimization

With the increasing national energy and environmental problems,clean energy such as wind and solar energy has attracted people’s attention.The use of clean energy is of great significance to alleviate energy shortage and protect the ecological environment.As a carrier that can use clean energy to generate electricity,the development of micro grid has attracted wide attention from the power and energy industry.Micro grid is a form of distributed power supply,which is mainly based on environmental economic benefits.Therefore,whether micro grid can operate economically is one of the important conditions for consumers to accept it.Based on the analysis of the structure of the micro grid,studying the characteristics of several common micro power supply and micro power grid economic operation strategy,on the basis of build a solar photovoltaic cell(PV),wind turbines(WT),the micro gas turbine(MT),diesel generators(DE)and battery energy storage device(BS),but in the isolated net and grid run under two ways of optimization model.The scheduling strategy of the micro grid in the two working modes is determined,and specific examples of the power supply system of the isolated network are given,including the parameters of each power supply,the load curve of one cycle,the generation curve of wind generator and solar photovoltaic cell.The objective function with minimum operating cost,minimum environmental cost and minimum combined cost is obtained.The particle swarm intelligence algorithm is used to calculate the optimal solution for the economic operation of the micro grid,from which the optimal power scheduling plan curve of the micro grid in a day is obtained,namely the output curve of each micro power source in different time periods.In this paper,the multiple power generation mode in the field of micro grid how to combination,and how to achieve optimization of related research,by the micro economic operation of power grid planning model for the simulation results,fully show that the feasibility and validity of research methods,the results of practical design and application has a certain theoretical guiding significance.