Reliability and economic assessment of renewable micro-grid with V2G electric vehicles coordination

Now-a-days, the consumption of fossil fuel is increasing day by day and the major proportion of it is consumed by vehicles and auto-mobiles. To decrease their dependability on fossil fuels, one solution is to electrify the vehicles by converting the fossil fuels based cars into electric vehicles (EVs) that will not only reduce dependability on fossil fuels but also play a key role in reducing the greenhouse effect. However, electrifying the vehicles increases the electrical load that has a significant impact on power system and upcoming smart grid which may eventually reduce the power system reliability. In this paper, the reliability and economic assessment of micro-grid consisting of renewables only, considering non-controllable loads as well as controllable EVs load, is investigated. In order to reduce the adverse effects of EVs on the micro-grid performance, dedicated G2V and V2G periods, taking social behavior into account, are proposed. Hourly load variations of IEEE-RTS-79 are used to examine the proposed model. Sensitivity analysis is well presented to analyze the impact of different V2G coordination levels on the micro-grid reliability.