Research On The Model And Optimal Operation Of Energy Internet In Data Center Park

Data center is one of the important directions of the New Infrastructure initiative,and the energy efficiency of the data centers has always been a focus of research.Park Energy Internet is a system that emphasizes the promotion of energy efficiency.At the same time,the construction mode of the data center industrial park provides an environment for the application of Park Energy Internet.Therefore,constructing Energy Internet in data center park becomes a proper way to deal with the high energy consumption of data centers.However,the current research on data centers and Energy Internet is independent to each other.So how to construct Energy Internet in data center park and realize its overall efficient operation is the key problem to be solved.On this basis,we focus mainly on the operation optimization of Energy Internet in data center park,and conduct the following researches:Firstly,the basic mode and structure of Energy Internet in data center park are proposed and mathematic models of common energy devices in Park Energy Internet are introduced.Considering dynamic voltage and frequency scaling,mathematic models of electricity load and cooling load in data centers are established.Moreover,energy balance model of Energy Internet in data center park based on Energy Hub is put forward,providing theoretical basis for the following research.Secondly,an operation optimization model of Energy Internet in data center park is proposed,with the consideration of server frequency shifting and time-scale workload shifting in data center.In this model,the advantage of multi-energy coupling in Energy Internet is fully exerted and the efficient utilization of energy has been realized.Meanwhile,the price information of upper energy network is considered in the frequency shifting and workload shifting in data centers,improving the economy of the data center park.Furthermore,study of how the amount of delay-tolerant workload influences the optimization of data center park is carried out.Finally,to solve the uncertainties of source and load in data center park,a day-ahead optimal dispatching model of Energy Internet in data center park based on improved light robustness is proposed.In this model,slack constraint of energy balance in the data center park is constructed based on light robust theory.Meanwhile,the probabilities of uncertainties are considered through interval estimation.Moreover,the slack constraint is linearized using counterpart transformation.This model is proved to be capable in dealing with the uncertainties in data center park while prioritize loads in data center.At the same time,by changing the confidence parameter and penalty factor,the economy and conservatism of dispatching scheme can be adjusted.By setting different combinations of confidence parameters and penalty factors,the confidence-penalty-cost surface is constructed,which can intuitively reflect the influence of the confidence parameters and penalty factors on the cost,and achieve the balance between economy and conservatism of the dispatching scheme.