College of Engineering

A Master thesis was discussed in Department of Electrical Engineering / College of Engineering at University of Mosul entitled “Effect of Electric Vehicle Charging Stations On Power Systems Protection” submitted by (Wisam Mohamed Najem), Supervised By Assist. Prof. Dr. Omar Sharaf Al-Deen as First Supervisor and Dr. Shaker Mahmoud as Second Supervisor On Thursday, Nov. 17, 2022.
In this research, a three-phase, six pulse, full wave controller, off-board charger from the third level with fixed voltage and current was designed, which is the fastest in the process of recharging the batteries for these vehicles, which works to maintain the output current and voltage in a constant manner even in the case of high or low input voltage by (5%).
As a group of scenarios including the integration of 30 vehicles, 50 electric vehicles, and 75 electric vehicles into the distribution system was analyzed, the effect of electric vehicles’ integration in the system on distance protection was also illustrated. Our investigation revealed that the integration of electric vehicles into power grids results in overreach in distance protection. As a result, the distance protection’s attributes must be adapted to meet the system’s existing status.In this study, artificial neural networks were employed to adapt the distance protection’s characteristics based on how much total harmonic distortion these vehicles’ integration. The study discovered that the proposed distance relay successfully overcame the negative impacts of these vehicles on the distance relay. This was because the relay used to have a 99.9% accuracy in fault detection and an error rate significantly lower than 5%.