Impact of Priority Criteria on Electric Vehicle Charge Scheduling

Coordinated charging is the superior charging method for integrating electric vehicles (EVs) smoothly and efficiently into the existing power system. Coordinated EV charging can be further classified into two types, namely time coordinated charging (TCC) and power coordinated charging (PCC). Scheduling of EV charging is the vital component in both types of coordinated EV charging methods. Generally, priority criteria such as battery state of charge (SOC) and slack time are used for scheduling EV charging. In this paper, the impact of different priority criteria on the chargeability of EVs and charging fairness is studied for both types of coordinated EV charging methods. The overall performance of the coordinated EV charging methods employing various combinations of different priority criteria is evaluated using data-driven simulations. In addition, this paper evaluates the need for using weighted priority criteria for scheduling EV charging along with appropriate weights required for different cases.