Vehicle-to-Grid (V2G) as line-side energy storage for support of DC-powered electric railway systems
Vehicle-to-Grid (V2G) as line-side energy storage for support of DC-powered electric railway systems
Two predominant areas of ongoing transport electrification are the uptake of electric vehicles (EVs) in personal transportation and electrically powered trains for mass transportation - both significantly increase demand stresses on the electric power grid. In this research, a novel V2G application to support electrically powered rail transport is proposed. A local V2G network can reduce peak demand stresses on the power grid arising from electrified rail traffic and enable brake energy recovery from DC-powered electric trains. A case study examining an existing third-rail DC-powered rail system in England supported by a simulated population of aggregated parked EVs is presented. Simulation results for 24 hours of V2G supported rail traffic from the view of a single train station with nearby V2G enabled car park are discussed. Therein the EV population size, charging rate limits per EV and the overall power made available from the power grid are variables. The V2G network's ability to absorb power from regenerative braking on the rail system was found to be more sensitive to changes in EV charging rates than its ability to provide traction power. In particular, careful power management is required to avoid charging EVs 'too quickly' during periods without rail traffic.
Vehicle-to-Grid, aggregator control, electrified rail, peak demand reduction, line-side energy storage
Krueger, Hannes
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Fletcher, David
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Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Krueger, Hannes
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Fletcher, David
4e0b32a4-f615-484c-9c90-26ae9b81d424
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Krueger, Hannes, Fletcher, David and Cruden, Andrew
(2021)
Vehicle-to-Grid (V2G) as line-side energy storage for support of DC-powered electric railway systems.
Journal of Rail Transport Planning & Management.
(In Press)
Abstract
Two predominant areas of ongoing transport electrification are the uptake of electric vehicles (EVs) in personal transportation and electrically powered trains for mass transportation - both significantly increase demand stresses on the electric power grid. In this research, a novel V2G application to support electrically powered rail transport is proposed. A local V2G network can reduce peak demand stresses on the power grid arising from electrified rail traffic and enable brake energy recovery from DC-powered electric trains. A case study examining an existing third-rail DC-powered rail system in England supported by a simulated population of aggregated parked EVs is presented. Simulation results for 24 hours of V2G supported rail traffic from the view of a single train station with nearby V2G enabled car park are discussed. Therein the EV population size, charging rate limits per EV and the overall power made available from the power grid are variables. The V2G network's ability to absorb power from regenerative braking on the rail system was found to be more sensitive to changes in EV charging rates than its ability to provide traction power. In particular, careful power management is required to avoid charging EVs 'too quickly' during periods without rail traffic.
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V2G for DC-powered electric railway systems
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Accepted/In Press date: 15 May 2021
Keywords:
Vehicle-to-Grid, aggregator control, electrified rail, peak demand reduction, line-side energy storage
Identifiers
Local EPrints ID: 449849
URI: http://eprints.soton.ac.uk/id/eprint/449849
ISSN: 2210-9706
PURE UUID: a2646721-814f-4d1e-8fc2-b6c2244bf793
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Date deposited: 22 Jun 2021 16:31
Last modified: 17 Mar 2024 03:29
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Contributors
Author:
Hannes Krueger
Author:
David Fletcher
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