A framework for stochastic estimation of electric vehicle charging behavior for risk assessment of distribution networks

查看全文 作　　者：Salman [1,2]HABIB;Muhammad Mansoor [1]KHAN;Farukh [1]ABBAS;Muhammad [1]NUMAN;Yaqoob [1]ALI;Houjun [1]TANG;Xuhui [3]YAN

机构地区：[1]Key Laboratory of Control of Power Transmission and Transformation of the Ministry of Education,School of Electronic,Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;[2]Department of Electrical Engineering,University of Engineering and Technology,Lahore 54890,Pakistan;[3]State Grid Liyang Power Supply Company,Liyang 213300,China

出　　处：《Frontiers in Energy》索引2020年第14卷第2期,共20页

摘　　要：Power systems are being transformed to enhance the sustainability.This paper contributes to the knowledge regarding the operational process of future power networks by developing a realistic and stochastic charging model of electric vehicles(EVs).Large-scale integration of EVs into residential distribution networks(RDNs)is an evolving issue of paramount significance for utility operators.Unbalanced voltages prevent effective and reliable operation of RDNs.Diversified EV loads require a stochastic approach to predict EVs charging demand,consequently,a probabilistic model is developed to account several realistic aspects comprising charging time,battery capacity,driving mileage,state-of-charge,traveling frequency,charging power,and time-of-use mechanism under peak and off-peak charging strategies.An attempt is made to examine risks associated with RDNs by applying a stochastic model of EVs charging pattern.The output of EV stochastic model obtained from Monte-Carlo simulations is utilized to evaluate the power quality parameters of RDNs.The equipment capability of RDNs must be evaluated to determine the potential overloads.Performance specifications of RDNs including voltage unbalance factor,voltage behavior,domestic transformer limits and feeder losses are assessed in context to EV charging scenarios with various charging power levels at different penetration levels.Moreover,the impact assessment of EVs on RDNs is found to majorly rely on the type and location of a power network. 关键词：electric vehicles(EVs) residential distribution networks(RDNs) voltage unbalance factor(VUF) state-of charge(SOC) time-of-use(TOU)

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A framework for stochastic estimation of electric vehicle charging behavior for risk assessment of distribution networks

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