Development of Demand Response Mechanism to Reduce the Impact of EV Charging on Power Distribution Transformers

Abstract

the transportation industry, which contributes around 25% of overall carbon-dioxide emissions, has sparked concern about greenhouse gases emissions. The primary solution to this challenge is electric vehicles. However, large-scale integration of electric vehicles into distribution grid for charging raises significant concerns like increased ageing of costly grid equipment such as transformers. Therefore, this paper investigates

The effects of high electric vehicle charging penetration on power distribution transformers and proposes a novel technique to mitigate their detrimental effects. The proposed technique is developed as an optimization problem, in which demand response is linked with time of use price to reduce the impact of EV charging on power distribution transformer. Simulation results obtained using the proposed methodology reveals that the transformer life expectancy increased as overheating of transformer decreased due to demand response.