电动汽车充电对电网的谐波影响研究

近年来,电动汽车产业发展迅猛,电动汽车相关技术已经成为研究焦点,电动汽车的规模化接入对电网的经济可靠运行以及电能质量问题越来越受到关注,谐波问题是电能质量影响的重要方面,首先通过对不同种类充电桩的MATLAB/Simulink建模研究单台充电桩引起的电压谐波分布及电压总谐波畸变,其次,对不同类型充电桩组成的充电站进行建模,并仿真分析在不同渗透率情况下对电网接入点的电压谐波影响情况,最后给出了电动汽车充电站建设中的几条建议。

Research on the Impact of EV Charge upon Power Networks

Recent years have witnessed such rapid development of EV industry that related technologies have become a hot point of research.Impact of large-scale EV access to the grid upon its economical and reliable operation and power quality has attracted more and more attention.Harmonic is an important aspect of the impact upon power quality.First,we establish MATLAB/Simulink models for different types of charging piles to study voltage harmonic distribution caused by a single charging pile as well as total harmonic distortion.Second,we build up models for charging stations composed of different types of charging piles,and simulate impact on voltage harmonics at grid connection points at different penetration rates.Finally,some suggestions are given with regard to construction of EV charging stations.