Linear Programming-Based Power Management for a Multi-Feeder Ultra-Fast DC Charging Station

The growing number of electric vehicles (EVs) affects the national electricity system in terms of power demand and load variation. Turning our attention to Italy, the number of vehicles on the road is 39 million; this represents a major challenge, as they will need to be recharged constantly when th...

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Main Authors: Luigi Rubino, Guido Rubino, Raffaele Esempio
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/16/3/1213
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author Luigi Rubino
Guido Rubino
Raffaele Esempio
author_facet Luigi Rubino
Guido Rubino
Raffaele Esempio
author_sort Luigi Rubino
collection DOAJ
description The growing number of electric vehicles (EVs) affects the national electricity system in terms of power demand and load variation. Turning our attention to Italy, the number of vehicles on the road is 39 million; this represents a major challenge, as they will need to be recharged constantly when the transition to electric technology is complete. If we consider that the average power is 55 GW and the installed system can produce 120 GW of peak power, we can calculate that with only 5% of vehicles in recharging mode, the power demand increases to 126 GW, which is approximately 140% of installed power. The integration of renewable energy sources will help the grid, but this solution is less useful for handling large load variations that negatively affect the grid. In addition, some vehicles committed to public utility must have a reduced stop time and can be considered to have higher priority. The introduction of priorities implies that the power absorption limit cannot be easily introduced by limiting the number of charging vehicles, but rather by computing the power flow that respects constraints and integrates renewable and local storage power contributions. The problem formulated in this manner does not have a unique solution; in this study, the linear programming method is used to optimise renewable resources, local storage, and EVs to mitigate their effects on the grid. Simulations are performed to verify the proposed method.
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spelling doaj.art-a87c48d791bb49c9b47c53ce2bd33c6d2023-11-16T16:34:17ZengMDPI AGEnergies1996-10732023-01-01163121310.3390/en16031213Linear Programming-Based Power Management for a Multi-Feeder Ultra-Fast DC Charging StationLuigi Rubino0Guido Rubino1Raffaele Esempio2Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, CE, ItalyDepartment of Electrical and Information Engineering (DIEI), University of Cassino and South Lazio, 03043 Cassino, FR, ItalyDepartment of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, CE, ItalyThe growing number of electric vehicles (EVs) affects the national electricity system in terms of power demand and load variation. Turning our attention to Italy, the number of vehicles on the road is 39 million; this represents a major challenge, as they will need to be recharged constantly when the transition to electric technology is complete. If we consider that the average power is 55 GW and the installed system can produce 120 GW of peak power, we can calculate that with only 5% of vehicles in recharging mode, the power demand increases to 126 GW, which is approximately 140% of installed power. The integration of renewable energy sources will help the grid, but this solution is less useful for handling large load variations that negatively affect the grid. In addition, some vehicles committed to public utility must have a reduced stop time and can be considered to have higher priority. The introduction of priorities implies that the power absorption limit cannot be easily introduced by limiting the number of charging vehicles, but rather by computing the power flow that respects constraints and integrates renewable and local storage power contributions. The problem formulated in this manner does not have a unique solution; in this study, the linear programming method is used to optimise renewable resources, local storage, and EVs to mitigate their effects on the grid. Simulations are performed to verify the proposed method.https://www.mdpi.com/1996-1073/16/3/1213ultra-fast chargingelectric vehicles (EVs)power management (PM)grid-connected converters
spellingShingle Luigi Rubino
Guido Rubino
Raffaele Esempio
Linear Programming-Based Power Management for a Multi-Feeder Ultra-Fast DC Charging Station
Energies
ultra-fast charging
electric vehicles (EVs)
power management (PM)
grid-connected converters
title Linear Programming-Based Power Management for a Multi-Feeder Ultra-Fast DC Charging Station
title_full Linear Programming-Based Power Management for a Multi-Feeder Ultra-Fast DC Charging Station
title_fullStr Linear Programming-Based Power Management for a Multi-Feeder Ultra-Fast DC Charging Station
title_full_unstemmed Linear Programming-Based Power Management for a Multi-Feeder Ultra-Fast DC Charging Station
title_short Linear Programming-Based Power Management for a Multi-Feeder Ultra-Fast DC Charging Station
title_sort linear programming based power management for a multi feeder ultra fast dc charging station
topic ultra-fast charging
electric vehicles (EVs)
power management (PM)
grid-connected converters
url https://www.mdpi.com/1996-1073/16/3/1213
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