Power quality issues into a Danish low-voltage grid with electric vehicles

Francesco Marra, Morten M. Jensen, Rodrigo Garcia-Valle, Chresten Træholt, Esben Larsen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    An increased interest on electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) is dealing with their introduction into low voltage (LV) distribution grids. Lately, analysis on power quality issues has received attention when considering EVs as additional load. The charging of EVs is expected without a centralized coordination in the first years, therefore a study on voltage variations and loading of LV grids is needed to estimate the immediate impact by EVs. In this work, the modeling and simulation of a Danish residential LV grid is conducted considering the two scenarios of dumb charging and overnight charging. The effect of different shares of EVs on voltage variations and transformer loading is assessed and analyzed. Results have shown that if single-phase, 16 A charging is employed, the actual LV grid would withstand the contingency of up to 30-40% of EVs charging overnight.
    Original languageEnglish
    Title of host publication11th International Conference on Electrical Power Quality and Utilisation : Proceedings
    PublisherIEEE
    Publication date2011
    ISBN (Print)978-1-4673-0379-8
    DOIs
    Publication statusPublished - 2011
    Event11th International Conference on Electrical Power Quality and Utilisation - Lisbon, Portugal
    Duration: 17 Oct 201119 Oct 2011
    Conference number: 11

    Conference

    Conference11th International Conference on Electrical Power Quality and Utilisation
    Number11
    Country/TerritoryPortugal
    CityLisbon
    Period17/10/201119/10/2011

    Keywords

    • Voltage measurement
    • Load modeling
    • Batteries
    • Loading
    • Vehicles
    • Power cables
    • Power quality

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