Multi Micro Energy Grid Optimization Considering On The Uncertainty Of New Energy Sources And Market Environment

With the rapid development of modern society in the degree of materials,the demand for energy resources has risen significantly.Meanwhile,increasing amounts of human beings have realized the importance of protecting the natural environment.Hence,the utilization rate of new energy resources becomes higher among all energy resources.As a result,the traditional micro energy grids that operate separately are losing the capability to satisfy the citizens and the society in terms of energy demand.Instead,the new micro energy grids that consider the uncertainty of new energy resources are a perfect and comprehensive substitute.As known,State Grid proposes to clean energy resources,reduce costs,develop new energy resources,and build an innovative power system.In the process of constructing the innovative power system,the multi micro energy grids can effectively improve the consumption of new energy resources,reduce carbon emissions,coordinate the sharing and trading of energy resources between the multi micro energy grids and the main grid,and increase the stability,reliability and efficiency of the system.Therefore,the topic of multi micro energy grids has become the hot spot of recent research.Firstly,starting from the traditional operation mode of micro energy grids,this paper considers the uncertainty of the output and the load of new energy recourses and,based on affine rules,proposes a robust economic optimal scheduling method that transforms day-ahead optimization to real-time optimization.The result of case analysis demonstrates that this method has advantages on robustness and cost-saving.Secondly,on the basis of optimizing a single micro energy grid,this paper considers the optimization of multi micro energy grids.Since the multi micro energy grids is directly connected to the distribution system and can cause dramatic impacts on its operation,this paper bases on the bilateral transaction mode and establishes a two-layer optimization model of the multi micro energy grids considering the participation of the active distribution system.According to the problems of distribution network operation caused by the access of the multi micro energy grids,the upper-layer model establishes a distribution network reconfiguration model with the lowest distribution network loss as the objective function,and obtains the best operational plan of distribution network.The lower-layer model,a decentralized cooperative scheduling model,uses the original dual interior point method to calculate the node marginal electricity price of the public connection point of the micro energy grids,and designs the decentralized cooperative scheduling strategy to determine the switching power between the multi micro energy grids so that the multi micro energy grids can be operated in an economical mode.Lastly,this paper designs and develops the optimization operation module on the management platform of the multi micro energy grid.According to the theoretical research on the optimal dispatch method in Chapter 2 and Chapter 3 and the simulation scenario of Hangzhou Juhua intelligent industrial park,this paper promotes back-end module calculation,front-end interface display and overall data interaction,introduces the overall architecture and functions as well as related sub-module functions of the management platform,and displays the platform and the main function module interface.