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Investigation of the impact of electric vehicles charging in the electric power distribution systems performance

Grant number: 13/23020-7
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): January 01, 2014
Effective date (End): August 31, 2014
Field of knowledge:Engineering - Electrical Engineering - Power Systems
Principal Investigator:Fernanda Caseño Trindade Arioli
Grantee:Jéssica Tiemi Takeuchi
Host Institution: Faculdade de Engenharia Elétrica e de Computação (FEEC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


The Internal Combustion Engines (ICEs) used for mobile propulsion in vehicles strongly contributes to air pollution. Consequently, the electric vehicles (EVs) represent an important alternative to decrease the fossil fuel consumption and the emissions associated to this consumption. Until 2020, it is expected that all around the world 25% of all vehicles sales will be associated to electric vehicles. These vehicles use batteries that must be periodically recharged and such charges may be performed in "electric charging stations" or even at home, representing a strong increase in residential customers consumption. The individual consumption of these batteries may be, for instance, equivalent or greater than an electric shower connected by hours. As a result, the increase in electric vehicles sales may impact distribution system voltage profile, unbalance and may overload the service transformers, for example. In this context, this scientific initiation project proposes an investigation of the impact of the increase in electric vehicles as residential loads on distribution system voltage profile and transformer overload. This investigation will be based on several load flow studies and the results will guide the utilities in the selection of a proper charging strategy.

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