Load modeling for electric taxi battery charging and swapping stations: Comparison studies

With the development of electric vehicles (EVs), the existing power system concerned will be challenged from several aspects due to the spatial and temporal stochastic distribution of the EV charging load. Given this background, a model for simulating the charging load of electric taxis under fast charging mode and battery swapping mode considering the passenger trip characteristics, stochastic driving patterns and charging behaviors is developed in this paper. First, the concept of traffic zone of the gridded road map as well as seeking, traveling and charging route of EVs is introduced. Then, Monte Carlo simulations of EV driving patterns and charging behaviors are carried out considering typical passenger trip characteristics and the impacts of different charging operation modes. Finally, a comparative case study of the EV charging load in Hangzhou City of China is carried out to illustrate the essential features of the proposed model. The impacts of different charging operation modes on the spatial and temporal distribution of EV charging load are also addressed.