| The energy management of the microgrid aims at coordinating the output of each time period between its own microsources to achieve the purpose of optimized operation of the microgrid system.Compared with a single microgrid,the energy management between multiple microgrids is more complicated.It is not only necessary to consider the cooperation of distributed power sources within the microgrid,but also to take into account the power exchange between microgrids.In addition,the dynamic joining and withdrawal of sub-microgrids will also have a certain impact on the coordinated operation of the multi-microgrid system.In view of this,this paper takes the energy management strategy of multiple microgrids based on System of Systems(SoS)architecture as the research topic,compares the similarities between SoS architecture and energy management of multiple microgrids,and explores energy management strategies for multiple microgrids under SoS system method.First of all,based on the previous research results,the structure and operation mode of the microgrid and the structure of the multi-microgrid system are explained.By analyzing the characteristics of the SoS system and the energy management of the multi-microgrid,the SoS architecture of the multi-microgrid system is proposed.Then,considering the energy mutual benefit between the sub-microgrids,the multi-microgrid energy management analysis is carried out,and the mathematical model of each micro-source in the multi-microgrid is built.On this basis,the overall optimization operation of the multi-microgrid is used as the optimal dispatch objective function,Combining the constraints between the sub-microgrids and their own constraints,the model predictive control and the alternating direction multiplier method are used to solve the optimization dispatch objective function of the microgrid group.And through simulation analysis,test the advantages of the multi-micro grid energy management program.Finally,through the graph theory method,the dynamic physical structure changes and real-time information interaction of the multi-microgrid are given,combined with the rapidity,robustness,autonomy and activeness of the sub-microgrids in the multi-microgrid under the dynamic link behavior.And other characteristics,construct a multi-microgrid contribution evaluation model,and explore the impact of the dynamic addition and withdrawal of sub-microgrids at different times on the overall coordinated optimization of the multi-microgrid.Explore the time,space and network location of microgrid access and exit on the microgrid The influence of the group system’s collaborative optimization operation is verified by simulation.The research results show that the energy management of multiple microgrids based on the SoS architecture embodies the advantages of the energy complementation of the microgrid group,and greatly protects the privacy of each sub-microgrid.Moreover,the dynamic energy management optimization scheme for multi-microgrids based on the SoS system can not only ensure the independence of each sub-microgrid,but also effectively manage the interactive power between each sub-microgrid,reduce the overall operating cost of the multi-microgrid,and generate emerging benefits.,And find out the different effects on the optimal operation of the multi-microgrid system under the dynamic link behavior of the sub-microgrid,which has certain practical application value. |
