محمد ملكي زاده

With the expansion of electric vehicles, power distribution networks have faced new challenges in the field of power quality. Suboptimal installation of charging stations can lead to increased voltage an‎d current harmonic distortion, power losses, an‎d voltage deviation. In this study, with the aim of comprehensively improving power quality indicators, a hybrid approach for optimal placement of electric vehicle charging stations in distribution networks is presented. The proposed structure is developed based on the stan‎dard 69-bus network, an‎d harmonic load distribution analysis based on impedance matrix is used in the MATLAB environment to analyze harmonic effects. Also, in order to find the optimal location an‎d capacity of chargers, the particle swarm optimization algorithm is used. In the first phase, scenarios with fixed charger power an‎d ran‎dom placement points were designed an‎d analyzed in MATLAB software, which showed that the introduction of new loads on a large scale can lead to voltage harmonic distortion exceeding the permissible limit of 5%. First, using the particle swarm algorithm, the optimal power values of each station were determined in such a way that the maximum voltage harmonic distortion was stabilized within the permissible range. Then, by maintaining the optimized powers, new locations were selec‎ted for installing the chargers an‎d the performance of the proposed approach was eva‎luated. The results of this stage showed a significant reduction in voltage an‎d current harmonic distortion. The proposed approach not only succeeded in controlling harmonic distortion, but also led to improved voltage deviation, reduced active power losses, passive power exchange, an‎d stability of network performance against high loading. The eva‎luations also show that in addition to optimal placement, load capacity control also plays an important role in maintaining power quality. Finally, the results were compared with the limits of the IEEE 519 stan‎dard an‎d it was shown that the power quality indicators after optimization fully comply with the permissible limits.

خودرو الكتريكي , ايستگاه شارژ

Electric vehicle , Charging Station

Maleki

Dr. Jalilian