| 引用本文: | 苏海锋,赵可为,李岩,李萌,温和龙,王勇.规模化电动汽车三相负荷平衡充电选线装置与仿真分析[J].电力自动化设备,2018,(6): |
| SU Haifeng,ZHAO Kewei,LI Yan,LI Meng,WEN Helong,WANG Yong.Three-phase load balancing charging line selection device and simulation analysis of large-scale electric vehicle[J].Electric Power Automation Equipment,2018,(6): |
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| 摘要: |
| 居民小区规模化电动汽车的单相慢速充电方式可造成小区电力系统出现严重的三相不平衡现象，进而会对配电网造成不可忽视的影响，针对此问题设计了一种自动平衡电动汽车三相充电负荷的充电机选线装置。该开关装置可自动地选择电压最高的一相作为电动汽车充电电源，同时断开与另外两相的连接。在此选线装置作用下，居民小区配电系统陆续接入需要充电的电动汽车时，充电负荷会自动地均匀分配给各相电源以达到三相负荷平衡的目的。对此选线装置参与的居民小区配电系统进行了仿真分析，分析结果表明，该装置具有实现充电负荷平衡、改善三相电压不平衡度及降低配网线损的效果。 |
| 关键词: 三相不平衡 电动汽车 充电机选线装置 |
| DOI：10.16081/j.issn.1006-6047.2018.06.015 |
| 分类号:U469.72+ |
| 基金项目: |
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| Three-phase load balancing charging line selection device and simulation analysis of large-scale electric vehicle |
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SU Haifeng1, ZHAO Kewei1, LI Yan2, LI Meng1, WEN Helong1, WANG Yong1
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1.School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China;2.Inner Mongolia Power Economy and Technology Research Institute, Hohhot 010000, China
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| Abstract: |
| The single-phase slow charging mode of large-scale EV(Electric Vehicle) in residential district can cause serious three-phase unbalance of power system in the district, which will cause non-negligible impact on distribution network. An automatic balancing EV three-phase charging load selection device is designed for solving this problem. The selection device can automatically select the highest voltage phase as the EV charging power, while disconnecting the other two-phase connection. Under the action of the line selection device, when the distribution system of residential district is connected to the EV needing recharging, the charging load will be automatically distributed to each phase power supply to achieve three-phase load balance. The simulation analysis of distribution system of the residential district with the proposed line selection device is made, and the analysis results show that this device has a certain effect on realizing charging load balance, improving the unbalanced degree of three-phase voltage and reducing the loss of distribution network. |
| Key words: three-phase unbalance electric vehicles charging line selection device |
