Impact Assessment of Residential Electric Vehicle Charging on the LV Distribution Network in Uganda

Abstract

Uganda is committed to integrating electric mobility solutions into the public transportation sector and encouraging the adoption of electric vehicles to combat climate change and reduce greenhouse gas emissions. Using a segment of the distribution grid in Kololo, Kampala district, as a case study, this study investigates the effects of Electric Vehicle charging on a sample low-voltage grid. The study presents an overview of the residential charging characteristics of electric vehicles and uses computer simulation with DigSILENT PowerFactory to simulate and analyze load demand and distribution system distortion brought on by charging. The investigation into various electric vehicle penetration rates (12.5%, 25%, and 50%) and an examination of the uncontrolled and controlled charging scenarios are also included in the analysis. The 24-hour time simulations show effects on transformer loading, system losses, and feeder loading in the LV grid during the charging hours. This research contributes to a better understanding of the challenges associated with installing EV charging infrastructure.