Optimal Utilization Strategy of Integrated Energy for Commercial Users Based on CCHP Coupling

Aiming at the optimal utilization problem of integrated energy for commercial users, the stepped utilization of energy was firstly analyzed in typical combined cooling, heating and power(CCHP) systems. Secondly, considering the coupling structure of the system and energy utilization characteristics of commercial users, a physical framework of integrated energy system(IES) was set up for multi-energy optimal utilization. Devices of energy production, conversion and storage was modelled on the source side, and meanwhile, on end-user side, load models were built according to space cooling, space heating, hot water and electric. Then, taking into account the time-of-use and costs of operation and maintenance, a mathematical model of IES optimal utilization was established, which was solved by YALMIP/Gurobi. Finally, Case study proves the economy and effectiveness of the proposed optimization strategy.