Research on multi-source collaborative simulation and operation optimization of regional centralized supply system

Based on the study of regional distributed energy system, this paper takes the energy system of a business district in Shanghai as the research object. A time-varying mathematical model is established for the equipment, pipe network and users in the energy system. The hydraulic model and thermal model of regional energy supply network are established. Based on the basic loop method, the algorithm for solving the multi-source hydraulic model is established. The validity and correctness of the model are proved by case study; On this basis, a time-varying optimization model with the minimum operation cost of energy station as the objective function is established. At the same time, the simple particle swarm optimization algorithm is used to solve the optimization problem. It is found that the lower the pump frequency is, the closer the boiler outlet temperature is to the ambient temperature, and the lower the operation cost of the regional centralized energy supply system is.