Abstract:

The growing use of electric vehicles (EVs) has raised concerns about the impact on electricity markets and distribution grids. Charging strategies have emerged as a way to provide flexibility, particularly in controlling the EV charging process. This paper presents a conceptual framework for assessing the flexibility of these strategies in distribution grids, based on data from a systematic literature review. The framework includes four flexibility dimensions: time, duration, quantity, and location of charging. Structural elements of a charging strategy are also explored. A quantitative data analysis reveals that flexibility dimensions are not equally exploited, direct control strategies do not outperform other control alternatives, and innovative charging structures are yet to thrive.