Charging Load Modeling of Large-scale Electric Vehicles in a Wider Time Scale

Ignored by existing charging load models of electric vehicles, the multi-day spaced charging mode can improve the utilization rate of on-board batteries of electric vehicles, and it conforms to the actual charging habits of users. Based on the assumption that the daily travel mileage of a single user is a constant, the electric vehicle users are classified according to the daily travel mileage, and the calculation method of the expected charging load of each user at a specified time is proposed in this paper. Therefore, based on the law of large numbers and the principle of superposition, the charging load model of all user clusters charged within a specified working day and the total load level of each working day in a week are constructed.