Operation strategy for interactive CCHP system based on energy complementary characteristics of diverse operation strategies

Abstract

The interactive operation of multiple combined cooling, heating, and power (CCHP) systems can improve the performance of regional integrated energy systems by exploiting the spatiotemporal complementarity of loads. The interaction of various energy networks in the interactive combined cooling, heating, and power (ICCHP) system introduces new challenges to the optimization of the operation strategy. An interactive operation strategy based on the energy complementarity characteristics of the following electric load, following thermal load, and following hybrid electric–heating load operation strategies is proposed in this paper. To investigate the interaction effect on the system performance and the effect mechanisms when it operates interactively between different users, the load heat-to-power ratio of users was first classified and abstracted. Then, the performances of the ICCHP between two users with different loads and between two users with the same loads are analyzed separately. Finally, the effect of a third user was investigated to expand the application of the interactive operating strategy to the multi-user mode. The results showed that the interaction between CCHP systems with different loads can make use of the complementarity between different loads and the energy complementarity of operation strategies, which greatly improves the performance of the ICCHP system. CCHP systems with the same loads can only rely on the energy complementarity of the operation strategies, leading to less improvement in performance. In addition, the performance of the ICCHP system will be significantly improved in the three-CCHP interactive mode if the performance of the third building is higher in independent operation.