Abstract:  Integrated demand response （IDR） has been considered a significant way to raise the flexibility of integrated energy system（IES）. By co-optimizing demand response load and energy production conversion equipment， IES will increase the efficiency of energy utilization which in turn lowers the cost of both the energy supplies and consumers. Firstly， the characteristics of demand response load are analyzed， and the demand response load is subdivided into interruptible load， transferable load and adjustable heat load. Secondly， the combined heat power （CHP） system is modeled by the energy hub modeling method， and the demand response load is incorporated into it. On this basis， the operation strategy of the CHP system considering demand response load is constructed. The dispatch model is solved with the goal of minimizing daily operating cost and energy consumption. Finally， the results of case study in two different scenarios show that the participation of demand response load can cut the peak and fill the valley and make the supply and demand more balanced. By coordinating the operation strategy of energy equipment and demand-side load， the daily operation cost of the system is saved by 5.4%， and the energy conversion rate is increased by 2.6%. The economic optimal operation of CHP system is realized.

Key words:  integrated demand response（IDR）, demand response load, combined heat and power （CHP） system, energy hub, coordination and optimization