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电网技术  2015 

V2G模式下城市电网电压质量概率评估方法

DOI: 10.13335/j.1000-3673.pst.2015.10.046, PP. 2986-2992

Keywords: 动态概率潮流,V2G,概率评估,电压质量

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Abstract:

传统基于确定性潮流和静态概率潮流的电压质量评估方法无法考虑到城市电网中不确定因素的时变性,因此将动态概率潮流应用于电动汽车与电网双向能量传输(vehicletogrid,V2G)模式下的城市电网电压质量评估。建立城市电网中基础负荷和电动汽车功率的动态概率模型,运用基于半不变量法的动态概率潮流算法求得城市电网节点电压概率分布,进而得到1d中城市电网电压合格率,最终评估V2G模式下城市电网的电压质量。仿真结果表明电动汽车以V2G模式接入会造成城市电网电压质量下降,但相比于无序充电方式,V2G模式下城市电网电压质量较高,评估结果对未来V2G控制策略的制定以及城市电网规划都具有重要的参考价值。

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