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计及多日一充模式的规模化电动汽车充电负荷建模策略

, PP. 129-137

Keywords: 电动汽车,多日一充,负荷建模,概率特性,大数定理,离散处理方法

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Abstract:

提出了一种计及多日一充模式的规模化电动汽车充电负荷建模策略,为电动汽车充电负荷预测及有序充电控制措施的制定奠定必要的理论基础。该策略首先依据日行驶里程差异划分了6个用户类,并在详细分析各用户类中单个用户充电起始时刻和充电时长概率特性的基础上,提出了单个用户在指定时刻充电的负荷期望值的计算方法;然后提出了元日期窗口的概念,并分别模拟了两类多日一充模式下各用户类中的用户在元日期窗口内充电的概率分布;最后基于大数定理提出了规模化电动汽车在各工作日内集群充电的总充电负荷计算模型及其离散处理方法。算例分析结果表明,该策略可显著提高规模化电动汽车电池容量的利用率,可获得更为准确的充电负荷特性,且操作性强,因而具有广阔的应用前景。

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