Optimal charging of electric vehicles in low-voltage distribution systems

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Title: Optimal charging of electric vehicles in low-voltage distribution systems
Authors: Richardson, Peter
Flynn, Damian
Keane, Andrew
Permanent link: http://hdl.handle.net/10197/3388
Date: 23-Jun-2011
Abstract: Advances in the development of electric vehicles, along with policy incentives will see a wider uptake of this technology in the transport sector in future years. However, the widespread adoption of electric vehicles could lead to adverse effects on the power system, especially for existing distribution networks. These effects would include excessive voltage drops and overloading of network components, which occur mainly during periods of simultaneous charging of large numbers of electric vehicles. This paper demonstrates how controlling the rate at which electric vehicles charge can lead to better utilisation of existing networks. A technique based on linear programming is employed, which determines the optimal charging rate for each electric vehicle in order to maximise the total power that can be delivered to the vehicles while operating within network limits. The technique is tested on a section of residential distribution network. Results show that, by controlling the charging rate of individual vehicles, high penetrations can be accommodated on existing residential networks with little or no need for upgrading network infrastructure.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: IEEE
Copyright (published version): 2011 IEEE
Keywords: Road vehicle electric propulsionLinear programmingLoad flow analysisOptimisation methodsPower distribution
Subject LCSH: Electric vehicles
Electric charge and distribution--Linear programming
Electric power systems--Load dispatching
Electric power distribution
DOI: 10.1109/TPWRS.2011.2158247
Language: en
Status of Item: Peer reviewed
Appears in Collections:ERC Research Collection
Electrical and Electronic Engineering Research Collection

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