Impact of V2G Integration on an Urban Distribution Feeder in Nepal. A Case Study of Baneshwor Feeder.

Abstract

The electrification of transportation through Electric Vehicles (EVs) gains momentum in the energy sector. The study emphasizes the increasing strain on distribution feeders, the backbone of local electricity. The addition of high-power electric vehicle charging station in distribution system can cause voltage drops, overloading of transformers and increase outage or disturbances. In Urban areas, clustering of CS can lead to distribution congestion. This thesis aims to placing charging station without physical restructuring of the network and distribution parameter should not violate operating region. Placement of charging station is based on novel Electrical Vehicle Placement Index (EVPI). Genetic algorithm is used for the optimal placement of charging station. This research also focuses on the integration of V2G technology as a dynamic tool for enhancing distribution reliability. A coordinated way of charging and discharging of vehicle. The analysis is carried out in IEEE 33 bus radial distribution system with five different test cases. The test case results strong and weak bus based on reliability index approach. Placement of CS at strong bus keeps the smooth operation while placing at weak bus, deteriorates system performance. Finally, this approach is implemented for real-time Baneshwor feeder distribution system.