Research On Optimal Operation Strategy Of 5G Base Station Energy Storage System Based On Communication Load Migration

Under the requirements of the dual-carbon target,the country vigorously carries out green and energy-saving 5G base stations,which are equipped with rooftop photovoltaic and energy storage batteries to solve the problems of high power consumption and high cost of the base stations.However,the distributed PV output of roof in different load areas differs from that of base station in time and space,so there is a problem of PV absorption difficulty.Therefore,how to conduct energy storage configuration of 5G base stations and formulate operation strategies of 5G base station system to improve the economy of base stations has become an urgent problem to be solved according to the spatiotemporal differences of photovoltaic and base station communication loads in different load areas.In this paper,the spatial and temporal prediction of roof distributed photovoltaic output is firstly carried out,and the installed area model of roof distributed photovoltaic is established to realize photovoltaic power generation prediction.Besides,the energy consumption composition of 5G base station and the difference and complementarity of its communication load in time and space are analyzed.By analyzing the spatio-temporal differences of roof distributed PV output and base station load in industrial zone,administrative district,business district and residential area,the complementary relationship between PV output and base station load is found,which provides data support for the formulation of load migration strategy of the following communication.Secondly,in view of the reliability requirements of the power supply of 5G base stations,a dynamic backup model of the base station’s energy storage is established to improve the dispatchable capacity of the base station’s energy storage,instead of the fixed capacity reserved by the traditional base station for the power supply of 5G base stations.On this basis,in view of the uncertainty of photovoltaic output and communication load,a two-stage robust optimal configuration model of base station energy storage applicable to different load areas is established,and different energy storage planning schemes are formulated for 5G base stations in different load areas,so as to realize local conditions and minimize investment costs and operating costs.Finally,in order to further tap the potential of 5G base stations to participate in the interaction of the power grid,aiming at the difficulty of photovoltaic consumption caused by the spatio-temporal differences of base station loads and rooftop PV in different load areas,the joint optimization operation idea and framework of energy storage and 5G base station are proposed,and a 5G base station communication load migration model based on mobile user allocation is established.Information flow migration in different load areas,namely base station communication load migration,can change the load size of 5G base stations so as to realize the transfer of energy flow,which can effectively improve the mismatch between photovoltaic output of buildings with different land types and base station load.On this basis,taking the optimal photovoltaic absorption rate and operating cost as the objective function,a 5G base station system optimization operation model considering communication load migration is proposed.The results of example analysis show that the proposed model can reduce the operating cost of base station and improve the photovoltaic absorption rate.