Study Of Energy Management And Operation Optimization For Microgrids

With the rapid development of social economy,energy demand is increasing.The economy problems have become the hot issue of the world.In recent years,with the development of distributed generation technology,the exploitation and utilization of renewable energy such as wind power and solar energy get more and more attention.However,because such distributed energy has the disadvantages of randomness and intermittency,when it is connected into power grid,it will affect the operation of the power grid,which is not conducive to the safe and stable operation of the power grid,because of these reasons,limiting its development and use.Micro-grid has effectively solved this contradiction,The Micro-grid consists of distributed sources such as wind energy and solar energy,energy storage equipment,energy conversion devices and loads,which can realize self-monitoring,self-protection and autonomous operation small-scale power system that can be operated in grid connection and islanding,it`s an effective way to use distributed generation technology.With the development of microgrid technology,the optimization of economic operation of microgrid has become a widespread concern in the society.Therefore,how to improve the economic benefits of microgrid operation becomes an issue that needs to be in-depth study.In this paper take Hangzhou HuaDian Electric Power Research Institute Park Experimental Microgrid system as the research object,in-depth study the microgrid energy management and operation optimization.1?The microgrid simulation model based on the experimental microgrid system in Hangzhou HuaDian Electric Power Research Institute is established.The microgrid is composed of photovoltaic power generation system,battery energy storage system,micro-gas turbine and controllable load.By analyzing the structure of microgrid,operation control method,energy management system and economic operation optimization strategy,the mathematical mode of photovoltaic power generation system,Energy storage system and micro-gas turbine and controllable load are established.2?A multi-objective optimal operation model is established.The objective function of optimization operation is proposed,which is the lowest operating cost,the highest environmental benefit,the lowest depreciation cost of micro-power supply and the least battery life loss.By setting the weight of four targets in the integrated optimization objective,the multi-objective operation of the microgrid can be optimized and controlled.3?Based on Genetic algorithm an adaptive multi-parent genetic algorithm is proposed to solve the multi-parameter and multi-objective optimization problem of multi-objective optimal operation model.The algorithm supports scheduling planning of many kinds of time scales.Finally,using C# language and MATLAB programming algorithm optimization program,the effectiveness of optimization mode and algorithm is verified by simulation.