Operation and Switching Strategy Optimization of Integrated Energy System

The Integrated Energy System (IES) contains a variety of heterogeneous energy flows coupled with each other. This feature provides optimization space for system optimization. It also makes its operating mode more flexible. How to optimize the steady-state operation mode of the integrated energy system and complete the switching between steady-state operation modes, this paper proposes an IES steady-state optimization model and operation mode switching method considering the transmission characteristics of the cold and heat pipe network. First, the IES economic steady-state operation model and the green steady-state operation model that describe the steady-state transmission characteristics of the cold and heat pipe network are constructed. Then, by analyzing the transient characteristics of the cooling and heating pipe network during the IES model switching process and the response time of the energy flow conversion equipment, the optimal scheduling time range of the IES is determined. Finally, the IES steady-state mode switching problem is converted into several ultra-short-term optimal scheduling by segmenting the IES switching process. The feasibility of the steady-state operation optimization model and switching strategy is analyzed through simulation.