Optimization dispatching strategy for an energy storage system considering its unused capacity sharing  

作　　者：Hejun Yang Zhaochen Yang Siyang Liu Dabo Zhang Yun Yu 

机构地区：[1]Anhui Province Key Laboratory of Renewable Energy Utilization and Energy Saving,Hefei University of Technology,Hefei 230009,P.R.China [2]State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems,China Electric Power Research Institute,Beijing 100192,P.R.China [3]Department of Energy Technology,Aalborg University,Aalborg 9220,Denmark

出　　处：《Global Energy Interconnection》2024年第5期590-602,共13页全球能源互联网（英文版）

摘　　要：In renewable energy systems,energy storage systems can reduce the power fluctuation of renewable energy sources and compensate for the prediction deviation.However,if the renewable energy prediction deviation is small,the energy storage system may work in an underutilized state.To efficiently utilize a renewable-energy-sided energy storage system(RES),this study proposed an optimization dispatching strategy for an energy storage system considering its unused capacity sharing.First,this study proposed an unused capacity-sharing strategy for the RES to fully utilize the storage’s unused capacity and elevate the storage’s service efficiency.Second,RES was divided into“deviation-compensating energy storage(DES)”and“sharing energy storage(SES)”to clarify the function of RES in the operation process.Third,this study established an optimized dispatching model to achieve the lowest system operating cost wherein the unused capacity-sharing strategy could be integrated.Finally,a case study was investigated,and the results indicated that the proposed model and algorithm effectively improved the utilization of renewable-energy-side energy storage systems,thereby reducing the total operation cost and pressure on peak shaving.

关 键 词：Renewable energy Energy storage system Sharing energy storage Power system dispatching Peak shaving 

分 类 号：TM73[电气工程—电力系统及自动化] TK02[动力工程及工程热物理]