摘要
在能源、环境等因素的影响下,电动汽车行业的发展备受瞩目,而电动汽车规模化接入产生的谐波会对电网产生不可避免的影响。首先,建立单台充电机和充电站的仿真模型;其次,将充电功率曲线等效成恒定电阻和时变电阻,分别在恒功率模式和实际充电功率模式下对单台充电机和多台充电机的谐波特点进行研究;然后,对不同充电机台数情况下的谐波规律进行分析,并比较了配电变压器两侧的基波电流与谐波电流的变化规律;最后,简要分析了起始充电状态不相同时的谐波特点。
Under the influence of energy,environment and other factors,the development of the electric vehicle industry has attracted much attention,while the harmonics generated by the large-scale access of electric vehicles will have inevitable impact on the power grid. Firstly,the simulation model of the single charger as well as the charging station were established. Secondly,the charging power curve was equivalent to a constant resistance and a time-varying resistance and the harmonic characteristics of a single charger and multiple chargers were studied in the constant power mode and the actual charging power mode,respectively. Then,the harmonics of different chargers were analyzed,and the fundamental and harmonic currents on both sides of the distribution transformer were compared.Finally,the characteristics of harmonics of different starting charging states were briefly analyzed.
作者
李想
李晓飞
卢碧玉
黄涛
汪舜羽
LI Xiang;LI Xiaofei;LU Biyu;HUANG Tao;WANG Shunyu(Liuzhou Power Supply Bureau,Guangxi Power Grid Co.,Ltd,Liuzhou 545006,Guangxi,China;School of Electrical Engineering,Southeast University,Nanjing 210096,Jiangsu,China)
出处
《电气传动》
北大核心
2019年第11期97-102,共6页
Electric Drive
关键词
电动汽车
电能质量
谐波污染
仿真
electric vehicle(EV)
power quality
harmonic pollution
simulation
