Multi-Objective Optimized Operation of Integrated Energy System Based on Economic and Exergy Analysis

Integrated energy system can effectively reduce operation cost and improve energy utilization through the multi-energy complementation and cascade utilization of various types of energy. Based on the exergy analysis method, this paper establishes the energy-saving index of the reciprocal of the minimum exergy efficiency of the system, and combines the economic index to construct a multi-objective operation model of the integrated energy system. The Pareto front is obtained by using the Ɛ-constraint method and the entropy method is used to determine the optimal operating strategy of the system. Simulation results show that the multi-objective operation model can achieve the trade-off between the system operation cost and the exergy efficiency compared with the single objective operation.