(School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China)
On the premise of known output power of wind power and photovoltaic and time-of-use electricity price implemented in the grid, electric vehicles energy storage battery is used in the battery swapping mode and the direct charging mode. The optimization objective is minimum fuel cost and power cost purchased from an external grid in the direct charging mode. For the battery swapping mode, minimum recharging cost is added as the optimization objective on the basis of the above-mentioned optimization objective in battery swapping mode. The optimization objectives are verified using CPLEX software, the results showing that the optimization program will help reduce the operating cost of the microgrid operator. The battery swapping mode is better than the direct charging mode for using battery discharging energy when energy price is high and charging when energy price is low, thus improving the operational economy of the microgrid. This work is supported by National Basic Research Program of China (973 Program) (No. 2009CB219700).
|||ZHANG Xiaobo, ZHANG Baohui, DONG Liang, et al. Operation Optimization of Electric Vehicles in Battery Swapping Mode and Direct Charging Mode in Microgrid[J]. Automation of Electric Power Systems,2016,40(9):56-63. DOI:10.7500/AEPS20150416004|