Research on the Optimization Scheduling of Integrated Energy System Considering Heat Recovery from Data Center

Abstract

With the explosive growth of data centers, a large amount of waste heat resources generated by their operation need to be efficiently utilized. In order to improve the energy utilization efficiency of the integrated energy system and reduce the operating cost, an optimal scheduling model of the integrated energy system considering the waste heat recovery of the data center is proposed. Firstly, a data center integrated energy system framework including wind power, photovoltaic, gas turbine, electric boiler, heat pump and absorption chiller is constructed, and a data center waste heat recovery model is established. The heat dissipation is upgraded by heat pump and connected to the system heating network and absorption chiller. Secondly, with the goal of minimizing the sum of total operating costs, considering the power balance of electricity, heat and cold and the constraints of equipment output, an economic dispatch model is formed. Simulation verification is performed by setting a comparison scenario with or without waste heat recovery. The results show that after the waste heat recovery is enabled, the total cost of the system is reduced by 7.95%, and the cost of gas purchase is reduced by 16.86 %. It effectively replaces the gas heating and drives the absorption refrigeration, and realizes the cascade utilization of thermal energy and the consumption of renewable energy.