In the past months I’ve been working at VITO on coordinated charging of electric vehicles on a distribution grid. In particular we have been looking at a market based coordination mechanism (PowerMatcher). In this coordination mechanism, cars and households bid for electricity in a single-shot multi-unit auction.
In the first part of the study we explored at which level of electric vehicles, problems on the distribution grid start to occur. We show that at a certain level of plugin hybrid electric vehicles (PHEV) and fully electric vehicles (EV), peak load exceeds the tranformator rating and undervoltage and unbalance exceed the norm. In the second part of the study we show how a market based approach to coordination is able to mitigate these problems. Even in the worst case scenario with 50% PHEV and EV, peak load stays well below the tranformer rating and undervoltage is within the norms.
I will be presenting a paper on this topic in April at the i-sup 2010 conference.
Tags: auctions · coordination · electric vehicles · markets · PowerMatcher
