Research On Microgrid Optimal Dispatch Considering Demand Response

In the face of global energy shortage and environmental pollution,distributed power generation is gradually paid attention to and put into use.Microgrid is a powerful carrier for distributed generation to exert its efficiency,and the research on Microgrid optimal dispatch has become one of the hot spots at present.With the continuous development and improvement of the power market,the impact of demand side resources on the power market is gradually increasing.It can effectively pool demand side resources to participate in the optimal dispatch of microgrid,which can better smooth the load curve,improve the reliability of microgrid power supply and the utilization of new energy.In this paper,we study the application of incentive demand response and electricity price demand response in microgrid optimal dispatch and the influence of microgrid.Firstly,the background and research status of microgrid optimal dispatch and demand side response are studied,the operation characteristics of main equipment in microgrid are analyzed,its mathematical model is constructed,and the category,response mode and characteristics of demand response are introduced in detail.Then,the grid connected micro grid optimal dispatch model is constructed,and the incentive demand response model of transferable load is introduced.The generation cost,battery depreciation cost,environmental cost and transfer load compensation cost are considered comprehensively,and the user’s comfort degree is converted into the compensation cost of transferable load,and a load dispatch model considering new energy generation and peak valley price is proposed Strategy can effectively reduce the difficulty of dispatch.The improved algorithm of flower pollination is used to solve the model.Finally,considering the influence of electricity price demand response on micro grid optimal dispatching,a two-stage optimal dispatching model is constructed,which takes the influence of new energy into account.In the first stage,the time-sharing electricity price and load curve are optimized with the goal of maximum customer satisfaction.In the second stage,the optimized load curve is put into the microgrid layer,and the output of the devices on the microgrid side is optimized to minimize the comprehensive operation cost of the microgrid.