Abstract:
In order to strengthen the multi-energy complementary synergy between advanced adiabatic compressed air energy storage(AA-CAES) and integrated energy systems(IES), and improve the operating efficiency of the system, this paper proposes an optimal operation method of electricity-heat integrated energy system with AA-CAES energy station. Firstly, the basic dispatching architecture of IES with AA-CAES energy station was constructed. Secondly, a model of heat and power cogeneration of AA-CAES was built, and the operation characteristics of AA-CAES device under compression and expansion conditions were analyzed in detail, such as the thermal energy storage process, the thermal energy exchange process and the thermal energy provision process. Then, based on the dynamic characteristics of heat transfer delay and loss of heating network pipelines, a linear heating network equation considering the heat storage inertia of the heating network is established; on this basis, considering the schedulable resources on the user side, a day-ahead optimal operation model of IES with AA-CAES energy station in consideration of integrated demand response is proposed. Finally, the modified IEEE33-node distribution network and the Bali 32-node district heating network are analyzed by calculation examples. The simulation results show that the proposed method can effectively reduce the operating cost of IES and improve the IES renewable energy consumption capacity.