Performance of Vehicle-to-Grid Integrated with PV-Diesel Microgrid System in Libya’s Southern Region

Abstract

In Libya's southern region, where there is abundant solar energy potential and frequent power blackouts, reliable and cost-efficient microgrid solutions are essential. This case study suggests implementing a Control based approach to assess using Vehicle-to-Grid (V2G) technology for off microgrid consists of (PV-EV-diesel) to operate AC motor pump. The setup involves a 60 kWh Electric Vehicle linked through an 11-kW bidirectional charger to deliver frequency support and manage energy trading. A control optimizes the EV's charging and discharging to reduce diesel consumption, taking into account initial battery state of charge as well as charging limits, and soiling effect. Results from MATLAB/Simulink simulations on a summer day indicate decrease in diesel usage, it is only 14.6 KWh equivalent to about 2.5 hours out of 12-hour daytime operation, and maintaining frequency deviation within ±0.5 Hz. The control system proves effective for V2G performance. This paper results confirm that V2G technology is a practical solution for improving the resilience islanded microgrids.