Charging Techniques of Electric Vehicle and It's Impact on Distribution Grid

The current Electric Vehicles (EVs) market is ex-periencing significant growth. However, the increasing demand for charging these EVs' large batteries has the potential to negatively impact the stability of the distribution grid if their charging is not properly coordinated. The escalation in charging requirements could lead to various issues such as under-voltages (lower than required voltage levels), heightened energy losses, imbalanced power distribution across different phases, higher peak loads during specific time periods, and the risk of overloading power lines and transformers. In this paper, we delve into a comprehensive study that focuses on the effects of two distinct charging approaches: Uncoordinated Charging and Coordinated Charging. To assess their impacts, we utilize the standard IEEE-13 Node Test Feeder, which is a benchmark power distribution system used for evaluating the performance of distribution grids. The analysis is rooted in the context of IEEE Standard 1159–2019, which defines criteria for power quality in electrical systems.In essence, the study underscores the significance of coordinating EV charging to maintain a robust and stable distribution grid. By adhering to coordinated charging methods, the potential disruptions and instabilities associated with uncontrolled charging loads can be substantially alleviated. Our findings offer valuable technical evidence to support the implementation of coordinated charging strategies as a means to ensure the sustainable integration of EV s into existing power distribution systems.