Multi-stage voltage dependent load modelling of fast charging electric vehicle

2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA) Pub Date : 2017-10-01 DOI:10.1109/CERA.2017.8343306

Akanksha Shukla, K. Verma, R. Kumar

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引用次数: 10

Abstract

Increased penetration of Electric Vehicle (EV) in the recent past introduces new type of load in the distribution system. Charging of EV may overload the system components, increase voltage deviation and system losses. To analyse the impact of charging of EV on distribution, there is a need of modelling of EV charging load. Currently Constant Power Load (CPL) is considered for the load modelling which does not represent dependency of charging load with the system voltage. In this paper, an accurate load modelling of EV is done considering the charging behaviour of EV. Single stage and multi-stage time variant coefficients of ZIP load model and exponential load model are estimated to model the voltage dependency based on the EV charging characteristics. Estimation problem is formulated as least square minimization problem. Quadratic Programming (QP) and Differential Evolution (DE) is used to solve the estimation problem for ZIP load model and exponential load model respectively.

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快速充电电动汽车多级电压负荷建模

近年来，电动汽车的普及给配电系统带来了新的负荷类型。电动汽车充电会使系统元件过载，增加电压偏差和系统损耗。为了分析电动汽车充电对电网分布的影响，需要对电动汽车充电负荷进行建模。目前的负荷建模考虑的是恒功率负荷(CPL)，它不表示充电负荷与系统电压的依赖关系。本文考虑了电动汽车的充电特性，建立了电动汽车的精确负荷模型。基于电动汽车充电特性，估计了ZIP负荷模型和指数负荷模型的单阶段和多阶段时变系数。将估计问题表述为最小二乘最小化问题。采用二次规划(QP)和差分进化(DE)分别求解ZIP负荷模型和指数负荷模型的估计问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)

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