Static Charging Scheduling of Electric Vehicles at Private Stations

In this short paper, considering the significant increase on the number of electric vehicles (EV) and the additional load they bring on the power grid, we propose a static charging scheduling algorithm in order to effectively schedule the charging of EVs during nighttime at private charging stations. Given the vehicles and the volume of their charging demands, we first determine the additional load to the grid assuming all EVs need to charge to the maximum level recommended by the manufacturers within the given time period. Then, the proposed algorithm calculates the energy and the time needed to charge the EV battery to the level requested by the owner. After finding the slack time (the latest start time for charging - the current time), it schedules the charging of EV by giving priority to the one whose slack time is minimum. If it is not possible to charge all vehicles to the requested battery level within the time constraints, the algorithm evenly distributes the available energy to EVs that need more charging.