IEEE Power & Energy Magazine - Grid Edge 2023 - 65

By Jairo Quirós-Tortós,
Luis (Nando) Ochoa, and Timothy Butler
January 2013 to December 2015 and was subsidized by the Low Carbon Networks Fund along
with partners from industry, DNOs, and academia. The MEA project deployed more than 200
Nissan LEAFs to customers in the United Kingdom to study the driving and charging habits of a
geographically and socioeconomically diverse population. This industrial project also investigated
the technical effects of EVs on European-style low-voltage networks and trialed the direct control
of EV charging points to increase hosting capacity.
In this article, we provide details about the MEA trials, including the
main infrastructure adopted. Based on the data analysis and network
studies carried out, we present key fi ndings in terms of 1) the
charging habits of EV users, 2) the impact of EVs on lowvoltage
networks, and 3) the effectiveness of the proposed
strategy to increase hosting capacity. Using
what was learned from this large-scale project,
we then show the additional results
that aid in understanding the extent to
which EVs could provide services to
the electric grid. Finally, we summarize
the key lessons learned
from MEA.
The My Electric
Avenue Project
The MEA project deployed
more than 200 Nissan
LEAFs with a battery size
of 24 kWh across the United
Kingdom (Figure 1),
making it one of the largest
(if not the largest) EV
trials in the world to date
that examines the challenges
and benefits arising from
the use of this technology at
home (slow-charging mode
at approximately 3.6 kW). The
project's main objective was to
trial a solution (known as Esprit)
to mitigate the impacts that EVs
may pose on European-style low-voltage
networks (i.e., multiple low-voltage
feeders connected to the same distribution
transformer supplying dozens or hundreds of
customers). To achieve this, the project performed
EV data analysis, modeling, impacts, and management
studies. MEA was the first project to focus on how to best
manage the local electricity network when a large number of EVs
charge on the same street at the same time.
november/december 2018
ieee power & energy magazine
65

IEEE Power & Energy Magazine - Grid Edge 2023

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