Evaluation of the Charging Effects of Electric Vehicles on Power Systems, Taking into Account Optimal Charging Scenarios

Abstract

This paper aims to develop a management method considering load demand for electric vehicle charging. The method developed by means of modeling a stochastic distribution of charging and a demand dispatch calculation. Optimization processes have proposed to determine optimal demand shifting so that charging costs and demands can possibly be managed. The time of use electricity rate has been put into practice to change the tendencies of charging time. Nevertheless, since it focuses only minimizing costs of charging from vehicle owners, loads would be concentrated at a certain time and form a new peak load. The purpose of this paper is to suggest a scenario of load leveling. Therefore charging costs and demands can be managed suitably considering the discordance between electrical prices and system load fluctuations. In case study results, charging patterns and daily demands in the areas are investigated. And optimum solutions are conducted regarding costs and operation aspects by determining demand distribution proportions.