Optimal Dispatching For Shared Battery Stations Of Electric Vehicles By Divisional Control

With the problems of environmental pollution,energy security and energy crisis becoming more and more serious,Electric Vehicles(EVs)have become the focus of research and development in countries around the world due to their high efficiency,zero carbon emission and low cost.However,the rapidly increasing energy demand of EVs has limited the further popularization and promotion of EVs.In addition,the peak load,voltage drop and network loss caused by random out-of-order charging behavior pose new challenges to the power system.Battery charging stations(BCS)and battery swapping stations(BSS)are ideal solutions to the EVs' energy supply problem.By uniformly scheduling,BCS and BSS provide convenient energy supply service and flexible ancillary service.In the dispatching process of smart grid and integrated energy system,the optimal dispatching of BCS and BSS is of great significance to the development of smart grid and integrated energy system.The main research contents are described as follows:Firstly,the optimal dispatching problem of centralized single charging-swapping station is studied.A shared battery station(SBS)model with charging,discha rging,sleeping,and swapping functions is proposed.From the perspective of the SBS system operator,an objective function for maximizing revenue is established.The control center optimizes the number of each segment in each time slot.The sustainable and safe operation of the SBS system can be ensured.Secondly,the optimal dispatching problem of large-scale battery charging-swapping stations is studied.An aggregated shared battery station(ASBS)system model is proposed.Based on the k-means cluster algorithm and divisional control algorithm,a collaborative optimization dispatching strateg y for ASBS is designed.The sum of electricity purchasing cost,battery degradation cost,rental benefits is minimized.The sustainable and safe operation of the SBSs can be ensured.Thirdly,the problem of coordinated optimization of regional integrated e nergy system considering battery charging-swapping stations is studied.A hierarchical energy management framework based on the Energy Hub is constructed.In the regional integrated energy system,the traditional energy storage power stations are replaced by SBSs.By optimizing the amount of energy bidding,energy conversion,energy storage,and demand response,the dynamic balance between the supply and demand of integrated energy system can be achieved.And the efficient and economy of the integrated energy system can be ensured.Finally,the optimal dispatching of SBSs considering EV scheduling and battery scheduling is studied.A multi-SBS system consisting of a control center,power system,and large-scale SBSs is proposed.The optimal dispatching weighs the cost and income comprehensively.The control center provides the optimal dispatching strategy to EV and SBSs,ensuring the safe and economy of Multi-SBS system.