Research On Optimal Operation Strategy Of Microgrid Based On Demand Side Response

With the continuous development of society,resource consumption is increasing day by day,and environmental pollution is becoming more severe.In this context,the development of microgrids and demand-side response technologies is becoming more and more rapid.The microgrid uses clean energy such as wind energy and the sun to achieve power generation goals,so that the consumption of energy such as fossils can be suddenly reduced.Demand-side response technology can fully tap the potential of user-side control resources and improve user-side power efficiency.In summary,in this design,I conducted an in-depth study of the microgrid with distributed power sources,energy storage systems,and conventional loads to complete the control goal of coordinated and optimized source storage.The contents of the research work are as follows:(1)Construct mathematical models of each key unit of source storage load in the microgrid;create corresponding generator and energy storage system models;analyze the model according to the characteristics of user-side loads;create load models of adjustable equipment such as air conditioners and water heaters,And gives a demand-side response framework suitable for microgrids.(2)In view of the importance of optimizing the scale of the microgrid,this paper attempts to use the demand-side response to study the energy generation problem in the microgrid and effectively optimize the scale of the microgrid.Cost reduction is achieved by reducing the demand side response or eliminating the imbalance between the power generation side and the power consumption side.The specific method is to shift the load time domain or schedule the load,and compare the optimization results with and without demand side response.Finally,the effectiveness of the strategy is verified through simulation.(3)Since natural resources may cause forecast errors,we focus on analyzing the causes of error randomness caused by natural resources such as wind energy and light energy,and propose scenarios generation and reduction methods to reduce forecast errors.Because demand-side response consumes a lot of manpower and material resources,a multi-objective double-layer coordinated optimization control model for microgrid based on automatic demand-side response was created.The model is divided into upper and lower layers.In the upper layer,the user-side adjustable load is guided by the time-sharing electricity price information to activelyparticipate in demand response,optimized for the load curve,and then output to the lower layer model after the optimization is completed.In the lower layer,economic and environmental benefits are the primary targets for optimization,and the improved particle swarm optimization algorithm is used to solve the model,which aims to effectively control environmental pollution and improve the economics of microgrid operation.Finally,on the basis of the automatic demand-side response strategy proposed above,through simulation,the strategy is deeply verified to prove the effectiveness and practicability of the strategy described in the paper.