Research On Energy Management System And Its Application For Microgrids Based On DMP5000 Platform

A small power system consisting of distributed power generation,energy storage system,and load,which achieves power balance and voltage frequency stability through mutual coordination,and realizes autonomy and energy management,is called microgrid.The microgrid energy management system mainly includes a control and protection module,an energy optimization management module,and an operation monitoring module,which monitors and optimizes the operation of the microgrid to guarantee it to operate safely,economically and reliably.Based on a real-time data sharing solution,this thesis studies the optimal control strategy of the microgrid energy management system,develops the application interface of the distributed power controller,and verifies the functional modules of the microgrid energy management and stability control experimentally.The main research work of this thesis can be summarized as follows:Firstly,a secondary network framework of power system with decentralized acquisition and centralized control is taken as the research object,and the information acquisition,information calculation and logic judgment for analog signals and digital signals are realized hierarchically.According to the overall network framework,as well as the realization requirements of data sharing and real-time control,a solution is provided,namely the DMP5000 platform.The platform divides the secondary network of the power system into the local control layer,the intermediate control layer and the monitoring control layer.By completing the network architecture design of each layer of the DMP5000 platform and the detailed design of key technologies such as synchronous sampling control and data exchange,the real-time and synchronization of the information exchange of the whole network is guaranteed to realize the research network framework.Secondly,the functional modules and their scheme design based on DMP5000 platform are studied.According to the relevant theory and application requirements,the functional modules of the microgrid energy management system are divided into advanced functional modules and low-level control modules according to the characteristics of the DMP5000 platform.The detailed design of each functional module is carried out and the relationship diagram between the function modules is illustrated to complete the implementation scheme inside each module and the relationship between the modules.Finally,based on an engineering project of microgrid with distributed generations,the information interface module between microgrid energy management system and microgrid primary equipment is designed to realize the switching of operation control strategies for each power node in the project.The control of the parameters,in turn,realize the information fusion of the microgrid energy management system and the microgrid primary equipment.The engineering project implementation results have verified that the design system can ensure the smart microgrid operate stably,safely and economically.