07.09. | Energiefachtagung des Wasserstoffnetzwerkes Lausitz
7. September 202113.09. | RLI Energie-Dialog 2021
13. September 2021Assessing the Impacts of Market-Oriented Electric Vehicle Charging on German Distribution Grids (Schachler et al. 2021)
Birgit Schachler, Anya Heider, Tim Röpke, Florian Reinke und Carsten Bakker
Dieser Preprint wurde auf dem 5th E-Mobility Power System Integration Symposium vorgestellt und wird im Tagungsband des Symposiums veröffentlicht.
Abstract — Market-oriented charging, based on real-time electricity
prices, was in a previous study shown to benefit the
integration of variable renewable energy sources (VRES) by
significantly reducing market-driven curtailment. In this study,
we assess the impact of market-oriented charging of electric
vehicles (EVs) on medium-voltage (MV) and low-voltage (LV)
grids in Germany and compare it to an uncoordinated charging.
The analyses are conducted on synthetic grid topologies for a
2030 scenario with 10 million passenger cars.
We show that market-oriented charging has different effects
on the assessed grid types. In photovoltaics (PV)- and winddominated
grids, as well as load-dominated suburban and rural
grids, a minor increase in load-driven grid issues is observed,
predominantly due to wind-feed-in driven charging peaks in the
winter. Feed-in curtailment, however, is slightly reduced, which
can mainly be attributed to a reduction of PV curtailment.
In urban grids, on the other hand, market-oriented charging
results in a significant increase in the number and degree of
load-driven grid issues.
As urban grids only make up around 7% of German
MV grids, the impact for entire Germany is found to be
moderate. Assuming load-driven grid issues could be solved
by a curtailment of charging demand, it is found that marketoriented
charging results in an increased curtailment of only
0.7% of the total charging demand. A sufficiently high benefit
in overlaying grid levels could thus outweigh the drawback of
increased stress on urban grids.
Erschienen in: Tagungsband zum fünften E-Mobility Power System Integration Symposium (EMOB 2021), 2021 p. 128 – 136
Erschienen in: Tagungsband zum fünften E-Mobility Power System Integration Symposium (EMOB 2021), 2021 p. 128 – 136