Double Q Planning Method For Active Substation Considering Power Demand Of 5G Network And Reliability

5G network is the key object of China’s new infrastructure construction.The denseness of its network deployment and the substantial increase of its load make the power consumption of 5G base stations increase sharply and bring new challenges to the distribution network planning.The development of distributed power generation technology and metering technology provides a new idea for the capacity planning of distribution network substation.How to realize green communication in the 5G era and take into account the economy and reliability of active substation planning has become an urgent problem to be studied.Based on the 5G network system architecture and the power consumption composition of 5G base stations,this paper firstly analyzes the energy-saving potential of 5G network from the perspectives of the spatial overlay of 5G network and the "tidal effect" of the communication load in time.In order to explore the energy saving methods of 5G network,the connection criteria of 5G base station and communication load are constructed,and the energy efficiency model of 5G network is established,and the relationship between 5G network energy saving and 5G network energy efficiency improvement is discussed.Based on the reliability of the distribution network node where the base station locates and the load of the base station,the energy storage configured by the base station is dynamically divided into two parts:standby capacity and redundant schedulable capacity.The redundant schedulable capacity model of the energy storage of the base station is proposed,which lays a foundation for the study of the capacity value of the energy storage of the base station.Then,the method of load forecasting and distributed power output forecasting in substation planning area is proposed.For 5G network,a power demand model including power consumption after network energy efficiency optimization and base station energy storage backup power consumption is established,and the rest of the conventional loads are predicted by load density method.Based on the original output model of wind power and photovoltaic,the revised output model of wind power and photovoltaic was obtained considering the probability of component failure outage,and the reliability index of distributed power supply was constructed.The calculation results show that the hibernation strategy aiming at the optimal energy efficiency for 5G network can realize the "peaking" of 5G network power consumption,and the base station energy storage has a large amount of redundant capacity with scheduling potential.The output correction model of distributed power supply provided more reliable data reference for the confidence capacity evaluation of distributed power supply in subsequent substation planning.Finally,in order to fully ensure the economy and reliability of substation planning,the principle of improving the reliability of the substation supply area by the redundant energy storage capacity discharge of 5G base station is discussed,the confidence capacity evaluation method of distributed power supply is proposed,and the double Q planning model of active substation is established considering the demand and reliability of 5G network.Moreover,the dual-Q planning is transformed into a substation planning problem considering the "peak cutting" power consumption of 5G network and the confidence capacity of distributed power supply,as well as an opportunity-constrained regulation problem of base station energy storage participating in fault power supply,peak cutting and valley filling,and output absorption of distributed power supply under different reliability confidence levels in the substation supply area.The results of example analysis show that the proposed double-Q planning method for active substation can obtain the planning scheme of active substation and the charging and discharging strategy of base station energy storage with the best economic benefits and meet the reliability requirements,and realize the mutual benefit and win-win situation between the power grid and the communication operator.