Research On Optimal Scheduling Of Multi-Region Multi-Energy Flow Coupling Interconnection System Considering Shared Energy Storage And Integrated Demand Response

To cope with the dual pressures of fossil energy shortage and environmental protection,the power system is developing in the direction of multi-source cooperation and interconnection,and the multi-region and multi-energy flow coupling interconnection system has gradually become a key element in the energy field.Shared energy storage and integrated demand response have become important adjustment means of coupling systems with efficient coordination ability and flexible adjustment ability.Therefore,to improve the operation economy of the coupling system and tap the response potential of demand resources,this paper establishes a mathematical model of shared energy storage and integrated demand response and studies the optimal scheduling scheme of a multi-region and multi-energy flow coupling interconnection system.(1)Multi-region and multi-energy flow coupling interconnection system model construction.Firstly,the multi-energy flow coupling system architecture of a single area is established,and its mathematical model is established according to the operation characteristics of energy conversion equipment;Secondly,based on the principle of an energy hub,the energy flow topology of the coupling system is constructed,and nine scheduling factors are introduced to establish the energy coupling matrix.Finally,several regional subsystems are interconnected,and the mathematical model of a multi-region and multi-energy flow coupling interconnection system is established,which lays a theoretical foundation for subsequent research considering shared energy storage and integrated demand response.(2)Research on optimal scheduling of multi-region and multi-energy flow coupling interconnection system considering shared energy storage.To give full play to the operation potential of the energy storage system and reduce the waste of energy storage resources,firstly,the corresponding service mode and mathematical model are established according to the concept of shared energy storage.On this basis,the optimal scheduling model of a multi-region and multienergy flow coupling interconnection system considering shared energy storage is constructed and solved by a genetic algorithm.The simulation results show that the model can effectively reduce the system operation cost,reduce the power grid load,and improve the economy and flexibility of the system operation.(3)Research on optimal scheduling of multi-region and multi-energy flow coupling interconnection system considering integrated demand response and shared energy storage.Firstly,the mathematical model is established according to the concept of integrated demand response;Secondly,to dig deep into demand-side resources to improve the economy and flexibility of system operation,an optimal scheduling model of multi-region and multi-energy flow coupling interconnection system considering shared energy storage and integrated demand response is established.The analysis of an example shows that the model can realize multi-energy complementarity and flexible adjustment between multi-region and multi-energy flow coupling interconnection system,tap the response potential of flexible resources,and reduce the peakvalley difference of system load and operating cost.