Title :
Estimating the acceleration of transformer aging due to electric vehicle charging
Author :
Hilshey, Alexander D. ; Hines, Paul D H ; Dowds, Jonathan R.
Author_Institution :
Sch. of Eng., Univ. of Vermont, Burlington, VT, USA
Abstract :
This paper describes a method for estimating the additional aging in medium/low voltage distribution transformers caused by increasing demand from electric vehicle charging. The proposed method combines detailed travel demand data from the National Household Transportation Survey with a one-year model of transformer hottest spot temperature, based on on IEEE C57.91-1995 Annex G. To illustrate the the model outputs, we present results for 15kVA and 25kVA overhead distribution transformers using ambient temperatures from Burlington, VT and Los Angeles, CA. Our results illustrate the importance of ambient temperatures to impact of PEVs on transformer aging.
Keywords :
battery chargers; battery powered vehicles; hybrid electric vehicles; power transformers; PEV; acceleration; ambient temperatures; electric vehicle charging; overhead distribution transformers; transformer aging; Aging; Load modeling; Oil insulation; Power transformer insulation; Temperature distribution; Windings; Plug-in hybrid electric vehicles; transformer aging;
Conference_Titel :
Power and Energy Society General Meeting, 2011 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4577-1000-1
Electronic_ISBN :
1944-9925
DOI :
10.1109/PES.2011.6039848
