The Economic Dispatch Of Power System Considering Base Station Standby Energy Storage

Global fossil energy is almost exhausted,and large-scale new energy power generation can effectively resolve the problem of shortage of fossil energy.However,the problems such as fluctuation and intermittence of new energy power generation have brought great challenges to power system.The connection of energy storage system into the power grid can effectively solve the problems of large-scale grid-connected new energy power and improve the economy and stability of power system.The energy storage investment is expensive,and there are few large-scale energy storage systems connecting to the power grid.However,the number of standby energy storage which is idle under normal conditions in communication base stations is large.It has great theoretical significance and practical value to strengthen the use of existing communication base station energy storage(BSES)resources to participate in power system dispatching.The concrete contents of this paper are as follows:(1)Formulate charging and discharging control strategies for BSES connecting to the power grid based on the discussion of base station power supply mode.Based on the discussion of the BSES lease pricing issue and consideration of the risks,maintenance costs and profits of BSES participating in scheduling,building a rental model.The Expected Energy Not Supplied is used to determine the amount of energy supplied by BSES,and the reasonable discharging of depth of BSES is determined considering the loss of life and lease cost of BSES in dispatching.(2)Studied the participation of BSES in power system peak load shifting,made full use of the large number of BSES and the advantage of no ramp rate limitation,improved the stability and economy of power system operation.By comparing the different scales of BSES in peak load shifting,the effect of BSES in peak load shifting is analyzed.The relationship between depth of discharge of BSES and total cost is studied further.The optimal depth of discharge for BSES.Under the time-of use price system,comparing the cost of BSES and conventional energy storage participation in scheduling,the BSES is more economical than conventional energy storage with the same capacity.(3)Utilized BSES to participate in power system optimization and dispatch,established power system economic dispatch objective function including BSES rental cost?thermal power generation cost,peak-to-valley electricity price benifit,and environmental penalty cost.Under the constraint conditions of available BSES capacity,generator output,and normal unit ramp rate,the bare bones Particle Swarm Optimization with Adapted ?(A?.-BBPSO)algorithm was used for optimization.The effectiveness of the proposed method is verified by IEEE30 system simulation.The participation of BSES in the power system scheduling brings benefits to the power system,reduces the operating cost,and improves the economic efficiency of the power system operation.In summary,based on the research of communication base station power supply operation mode and control strategy,a rental model was established in this paper in which BSES participates in scheduling.a reasonable dispatching power and depth of discharge was determined.BSES is utilized to shift peak load to improve the stability and economy of power system.Using base station energy storage resources to participate in the optimal scheduling of power systems,an electric power system economic dispatch model containing base station energy storage is established,and optimized by A?,-BBPSO algorithm.The effectiveness of the proposed method is verified by IEEE 30-bus system simulation.