Abstract: This Paper presents the EV charging coordination approach of the radial distribution system (RDS) for active power loss reduction, stability margin, and voltage profile enhancement. Due to the uncoordinated EV charger load placed in the RDS, some Bus are the strongest voltage stability index where as some of the Bus have the weakest VSI. a methodology to include EV charging systematically at appropriate locations in steps to optimize the loading capacity of the grid with consideration of the voltage stability limits. Since load modelling is a crucial component of an investigation of voltage stability, different EV charger load has been considered. effectively finds the next best position for EV charger in the radial distribution system and with consideration of the stability margin with help of this proposed algorithm. Here, IEEE-15 RDS is considered. This work proposes coordination with two different approaches derived from voltage stability margin. Bottom to Top and Top to Bottom approach algorithms are used for charging coordination of the considered test systems. The principal features of the proposed algorithm are the optimal distribution of the total available power, the EV charger optimal place, reduce power losses, voltage stability, and the priority given to the maximum EV charger’s maximum loading. Therefore, more active power losses are more in the heavily loaded weakest Bus as compared to the heavily loaded strongest Bus. To reduce the active power losses and enhance the voltage profile of the distribution system, coordination is done. The results show that the power loss is reduced and the voltage profile is improved by the coordinated EV charger in the test systems. This work was carried out on MATLAB Simulink 2019b software.
Keywords: Electrical vehicle, charging coordination, voltage stability index, power losses, maximum loading, EV charger, distribution system, Uncoordinated charging.
Copyright Form