Investigation of the Impact of Large-Scale Integration of Electric Vehicles for a Swedish Distribution Network

Sylvester Johansson, Jonas Persson, Stavros Lazarou and Andreas Theocharis
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Sylvester Johansson: Omexom, 653 50 Karlstad, Sweden
Jonas Persson: Karlstads El- och Stadsnät, 651 84 Karlstad, Sweden
Stavros Lazarou: Department of Electrical and Electronic Engineering Educators, School of Technological and Pedagogical Education (ASPETE), 141 21 Athens, Greece
Andreas Theocharis: Department of Engineering and Physics, Karlstad University, 651 88 Karlstad, Sweden

Energies, 2019, vol. 12, issue 24, 1-22

Abstract: Social considerations for a sustainable future lead to market demands for electromobility. Hence, electrical power distribution operators are concerned about the real ongoing problem of the electrification of the transport sector. In this regard, the paper aims to investigate the large-scale integration of electric vehicles in a Swedish distribution network. To this end, the integration pattern is taken into consideration as appears in the literature for other countries and applies to the Swedish culture. Moreover, different charging power levels including smart charging techniques are examined for several percentages of electric vehicles penetration. Industrial simulation tools proven for their accuracy are used for the study. The results indicate that the grid can manage about 50% electric vehicles penetration at its current capacity. This percentage decreases when higher charging power levels apply, while the transformers appear overloaded in many cases. The investigation of alternatives to increase the grid’s capabilities reveal that smart techniques are comparable to the conventional re-dimension of the grid. At present, the increased integration of electric vehicles is manageable by implementing a combination of smart gird and upgrade investments in comparison to technically expensive alternatives based on grid digitalization and algorithms that need to be further confirmed for their reliability for power sharing and energy management.

Keywords: distribution networks; electric vehicles; voltage drops; electrification; smart grids; transformers; cables (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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