Dynamic Modeling of Integrated Energy Cooling and Heating Supply System Based on System Identification

The dynamic model of each device of the integrated energy system is the prerequisite and basis for real-time control, fault diagnosis and decision analysis of the integrated energy system. Therefore, it is of great importance to study the dynamic model of the integrated energy system. In this paper, the system identification method is used to establish the dynamic mathematical model of the cooling and heating equipment and the pipe network of the integrated energy system. The global Linear Parameter Varying model of each equipment and pipe network is obtained by a linear interpolation method. The model is subsequently tested using test data over a large load range. The results show that the LPV model modeling method using linear interpolation is able to reduce some of the computational efforts while still ensuring a high level of model accuracy.