Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province(Yanshan University), Qinhuangdao 066004, China
Electric vehicles with the characteristics of cleanliness and energy storage have broad application prospects. However, in order to solve the drawback of short driving mileage, electric vehicle charging stations should be available on the expressways. The battery-swapping mode is employed in the electric vehicle charging stations for centralized management of batteries. Firstly, a bi-level economic dispatch model is developed. The objective function is to minimize the total cost in the upper level, and optimize the network loss in the lower level, respectively. Secondly, based on the proposed model, a new method is presented. In the upper level, the total output of the centralized charging stations and the thermal power units are optimized for every moment using the particle swarm optimization method. The power output of each thermal power unit is allocated for every moment by the integrative sensitivity. In the lower level, the power output of each centralized charging station is optimized for every moment and allocated by network loss sensitivity. Finally, numerical examples based on an improved IEEE 30-bus tested system show that the method proposed is accurate and effective, which can satisfy the economic requirements while obviously improving the calculation speed.
|||LI Xueping, GAO Fei, LU Zhigang. Bi-level Economic Dispatch Considering Expressway Centralized Charging Station[J]. Automation of Electric Power Systems,2017,41(14):126-132. DOI:10.7500/AEPS20161025008|