Innovative impact assessment of electric vehicles charging loads on distribution transformers using real data

R. Godina, E.M.G. Rodrigues, N.G. Paterakis, O. Erdinç, J.P.S. Catalaõ

Research output: Contribution to journalArticleAcademicpeer-review

28 Citations (Scopus)

Abstract

Widespread adoption of Electric Vehicles (EVs) could bring social and economic benefits. The effort of promoting the use of EVs in transportation is indispensable to meet the climate change related targets and to reduce the dependency on the ever unstable prices of diminishing fossil fuels. However, there are still many uncertainties in the market regarding the acceptability of EVs by the final consumers. As a new contribution with respect to earlier studies, this paper assesses the impact of EV charging load on the dielectric oil deterioration of two real Power Distribution Transformers (PDTs), one residential and one industrial, located in the insular grid of São Miguel. A PDT thermal model is used to estimate the hot-spot temperature given the load ratio. Real data are used for the main inputs of the model, namely, the daily residential load curve, the daily private industrial client load curve, the PDT parameters, time-of-use rates and EV parameters.

Original languageEnglish
Pages (from-to)206-216
Number of pages11
JournalEnergy Conversion and Management
Volume120
DOIs
Publication statusPublished - 15 Jul 2016

Keywords

  • Battery
  • Distribution transformer
  • EV charging
  • Loss-of-life
  • Transformer ageing

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