Impact of Battery Charging Station on Electrical Distribution Network: Study of the Harmonic Currents Impact and Mitigation Possibilities
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Date
2021-01-28
Authors
Omar, Reem Talat
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Publisher
جامعة النجاح الوطنية
Abstract
This thesis focuses on the impacts of electrical vehicle charging stations on electrical power networks. The generated harmonic currents have negative impacts on the power system components causing more losses and voltage profile modifications. This thesis represents the impacts of PHEV charging stations in different configurations of electrical networks. Each charging station consists a three phase full wave rectifier with DC/DC converter for charging regulation. A simulation model was programmed based on MATLAB Simulink to perform harmonic analysis in two different electrical configurations AC and DC electrical networks. In AC distribution systems the impact of charging stations in three different modes shows that the voltage is reduced from 400 V to 336V while the total harmonic distortion of current and voltage reduced to 20.4% and 6.73% respectively. On the other hand, in DC electrical networks the total harmonic distortion of current and voltage are 24% and 10.9% respectively. Moreover, ETAP software was used to analyze the impacts of charging stations on electrical network in two different cases to localize the charging station downstream and upstream. Finally, in order to mitigate the harmonics, passive filter was designed to mitigate the harmonic currents which resulting to reduce that the total harmonic distortion of current and voltage reduced to 9.2% and 5.3% respectively.