Study On Optimization Of Micro Grid Power Allocation

With the development of social economy,The electricity of people`s demand is more and more big.But the traditional power system with the increase of the power demand at the same time the shortcomings revealed.So solar power generation,wind power generation technology began to emerge But for the energy use,security and other aspects of the consideration,the simple distributed power should not be large.scale access to large power grid Micro grid can be a very good integration of distributed generation grid connected to the problem,Effectively alleviate the growing trend of the traditional power grid,and improve energy efficiency,power supply reliability and environmental protection and so on many aspects compared to the simple distributed generation has obvious advantages So micro network has gradually become one of the key research and development objects in the modern power system.And according to the specific circumstances of the local micro grid distributed power supply capacity of the number of types of configuration to reduce the investment cost,planning system,which has important practical significance to safe and reliable operation of microgrid and improve the environment friendliness In this paper,based on the theory of optimal configuration of micro grid power supply,the following work is carried out:(1)The working principle of the distributed power supply is analyzed in detail,and aiming at some key factors were analyzed by MATLAB simulation Based on this,the mathematical model of the steady state output power of each distributed power supply is given(2)Study on optimal allocation of micro grid with independent operation of a certain wind/Solar/energy storage Considering the economy and reliability of power supply,the cost of installation,operation and maintenance,operation and maintenance costs,battery replacement costs,government subsidies for new energy power generation costs and the cost of power outage penalty Reliability is introduced into the objective function in the form of penalty function Configuration method,prepared in MATLAB were improved adaptive genetic algorithm(DAGA)is solved,and through examples of conventional genetic algorithm and typical diploid genetic algorithm were analyzed.The results show the superiority of the correct configuration of configuration model is proposed and the superiority of the improved algorithm(3)Study on optimal allocation of grid connected wind/solar/energy storage/diesel power grid operation In addition to the lowest economic indicators(including the purchase and sale of electricity and net income)and the reliability of the penalty function outside Consider the environmental cost and using energy function rate of three parts as the ultimate goal Objective function: using the more objective entropy weight assignment method to determine the weight of each sub objective Operation strategy: consider the main price difference,proposed a more comprehensive economic power dispatch strategy reasonable;Configuration method: using the improved diploid adaptive genetic algorithm(DAGA)and particle swarm optimization algorithm(PSO)to solve the problem.From the final example configuration results analysis Compared with the traditional methods and strategies,the entropy weight method and the comprehensive economic dispatch strategy have obvious advantages.and the effectiveness and superiority of the improved algorithm are also verified.