دانلود مقاله Application of a Probabilistic Approach to Distribution Transformer Derating Calculation
سال انتشار: ۱۳۹۱
محل انتشار: هفدهمین کنفرانس سراسری شبکه های توزیع نیروی برق
تعداد صفحات: ۷
H. ouybari-Moghaddam – Student Member, IEEE
S.H. Hosseinian, – Student Member, IEEE
A. Alimardani, – Student Member, IEEE
A probabilistic model is used to estimate the fundamental and harmonic contents ofbattery charging load of Electric Vehicles (EV). Regarding this estimated harmonic-rich load,charging station transformer’s K-factor, current THD and the consequent derating is evaluated.The approach considers battery charging start time, state of charge and a worst-case scenariowhich is, uncontrolled charging at the peak load time. Since the employed model is more realisticthan deterministic models, a better understanding of the negative impact of harmonic-richchargers will be provided. Test results demonstrate that EV penetration causes a noticeablechange in the K-factor of the transformer, emerging the need for load management programs incase of high penetration of plug-in electric vehicles.