Impact of electric vehicle fast charging on power system voltage stability

Dharmakeerthi, C. H., Mithulananthan, N. and Saha, T. K. (2014) Impact of electric vehicle fast charging on power system voltage stability. International Journal of Electrical Power and Energy Systems, 57 241-249. doi:10.1016/j.ijepes.2013.12.005


Author Dharmakeerthi, C. H.
Mithulananthan, N.
Saha, T. K.
Title Impact of electric vehicle fast charging on power system voltage stability
Journal name International Journal of Electrical Power and Energy Systems   Check publisher's open access policy
ISSN 0142-0615
1879-3517
Publication date 2014-05-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.ijepes.2013.12.005
Volume 57
Start page 241
End page 249
Total pages 9
Place of publication Camden, London, United Kingdom
Publisher Elsevier
Language eng
Formatted abstract
Highlights
• Development of a static load model for an EV dc fast charger.
• EV having a combination of constant power and negative exponential characteristics.
• The parameters of the model depend on the parasitic resistances of the charger.
• EV load consumes more power at lower system voltages.
• EV load affects system voltage stability more compared to P, I, Z, load models.

The electric vehicle (EV) brings a sustainable future for the next generation of automobiles. Market penetration of EV has been increasing drastically in the recent past. However, EV integration into power grids adds more challenges for power system engineers worldwide. It is essential to evaluate potential grid impacts due to EV integration to guarantee consistent grid operation. Even though a number of power system impact studies have been performed covering several aspects of the problem, the impact on voltage stability has remained almost unattended. The lack of accurate load models to represent EV load for system stability studies is found to be a major gap. Hence, a static load model is developed in this study as an essential base for realistic stability studies. A specific EV load behavior which has not yet been revealed in the literature is identified during the study. Subsequently, the influence of EV load on power system voltage stability is evaluated under different scenarios. The study has discovered that integration of EV fast charging stations may significantly reduce the steady state voltage stability of the power grid.
Keyword Electric vehicle
Load modeling
Grid impacts
Loading margin
Steady state voltage stability
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 22 December 2013

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Information Technology and Electrical Engineering Publications
 
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Created: Mon, 13 Jan 2014, 19:03:53 EST by Champa Hemamali Dharmakeerthi on behalf of School of Information Technol and Elec Engineering