Research on Cost Optimization of Integrated Energy System Based on Power Demand Response

In this paper, demand response is introduced to stimulate the role of demand-side users in saving system operating costs through realtime changes in electricity prices. In this paper, the relevant models of electric power network, natural gas network and thermal network are established, and the mathematical model of user behavior of electricity price demand response is established according to the elasticity matrix of electricity price and user benefit maximization theory, and the operation cost minimization model of comprehensive energy system based on power demand response is established by piecewise-linearization algorithm. Finally, an integrated energy system consisting of IEEE-39 node power subsystem, Belgium 20-node natural gas subsystem and 6-node thermal subsystem is given to verify the effectiveness of the proposed algorithm and the established model.