Research On Modeling And Simulation Of Power System Based On Centralized Renewable Energies

Energy Internet,as the development direction of the future power system and the effective way of renewable energy exploitation and utilization,is attracting extensive attention and research.This paper focuses on energy coordination and optimization of Energy Internet and a hierarchical control scheme of multi-agent system is proposed.With the autonomy and collaboration of Agent,the coordinated control of the components of Energy Internet,and the goal of wide area energy dispatching and optimal operation of Energy Internet are realized.This paper mainly completed the following work:(1)An Energy Router based Energy Internet model,which has a hierarchical architecture and is composed of transmission layer,distribution layer and microgrid layer,is designed.In this model,two layers,and also the different energy sub networks of same layer,are connected through the Energy Router.(2)The basic theory of multi-agent system is analyzed in detail from the definition of Agent,structure,communication and cooperation of multi-agent system.For the multi-agent system development platform—JADE,the architecture,graphics tools,software package and communication mode are also introduced.(3)Aim at the transmission layer and distribution layer with more centralized renewable energy access to,a hierarchical control scheme based on multi-agent system,which utilizes the Agents to dispatch the Energy Routers and the centralized generation units in Energy Internet,is built for Energy Internet model.The interaction protocol of FIPA contract network is chosen as the cooperative method of multi-agent system,and the main functions of each Agent are designed.With the decentralized control and collaborative processing capabilities of Agent,the collaborative solution to the global target or specific target of Energy Internet is completed.(4)The European North Sea power grid is chosen as the application scenario of the hierarchical control scheme.The multi-agent system model of European North Sea power grid is built through JADE,and the control scheme for the multi-agent system of Energy Internet is tested.The research results show that the hierarchical control scheme of multi-agent system for Energy Internet has the advantages of centralized control and distributed control.In the process of completing global optimization of Energy Internet,the centralized generation units can be well regulated,meanwhile the rational utilization of centralized renewable energy has been realized.