Research On Power Supply And Distribution System Design And Energy Efficiency Management Of Large Data Center

Data center as the core of information infrastructure,installed capacity and permeability increased year by year,followed by the urgent demand for electric power and the limited capacity of the power grid between the contradiction gradually increased.In order to improve the reliability and energy efficiency management level of data center power supply and distribution system,this paper studied the high voltage DC power supply and the hybrid energy storage unit that combines renewable energy.The operation mode of energy efficiency management is analyzed as well.First of all,this paper analyzes the HVDC power supply and its key technologies and combined with the actual situation of the project for the power supply and distribution system of the data center is designed.Secondly,on the basis of the design of power supply and distribution system,The characteristics and control strategy of hybrid energy storage device composed of supercapacitor and battery are studied,and the model of power supply and distribution system of data center using hybrid energy storage device is built and simulated.The simulation results show that the hybrid energy storage device has the excellent performance of stabilizing dc bus voltage fluctuation and reducing ripple level in the power supply and distribution system of data center.Finally,the photovoltaic power generation system is connected to the power supply and distribution system using mixed energy storage.the problem of efficient utilization of three kinds of access power sources under distributed energy efficiency management mode is studied.Through WAPUE calculation method,PUE value can be reduced by 2%,and two methods of energy efficiency management and peak reduction are simulated and verified in MATLAB.