Energy Management Strategy of CCHP System with CAES Considering Demand Response

The combined cooling, heating and power (CCHP) system can effectively realize energy multistage usage by recovering waste heat, which plays an important role in the energy technology development all around the world under the background of current energy and environmental crisis. Compressed air energy storage (CAES) has aroused extensive research in the international community because of its advantages of low environmental pollution and high energy conversion efficiency. This study makes full use of the natural cooling, heating and electrical multi-functional interfaces of the CABS, and connects it to the CCHP system in a multi-energy coupling way. Considering on the characteristics of multi-energy flow coupling, this paper proposed an energy management strategy of the CCHP system including CAES, which combines the resources of the generation, the energy storage and the user side with taking account the price-based demand response. In order to achieve this goal, a mixed integer non-linear programming model is established and minimization of the total operating cost of the system is the objective function. The experimental results display that adding accumulation system and considering demand response can bring advantages to load shifting, load curve smoothing and system operation economy.