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电动汽车移动储能辅助频率控制策略的研究

, PP. 115-126

Keywords: 电动汽车,辅助调频,车辆限制,用户需求,控制策略

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Abstract:

大量电动汽车接入电网后,不仅可以作为可控充电负荷存在,也可以作为移动储能装置为电网提供服务与支持。首先分析了电动汽车参与电网频率控制的优势,介绍了一种移动储能辅助调频系统的结构框架及工作机理。基于电力系统频率调节控制基本动态模型,建立了电动汽车参与电网一次、二次频率调节控制的模型。在此基础上,针对相关研究较少考虑电动汽车车辆属性的特点,提出了计及车辆限制和用户需求的电动汽车参与电网频率调节的控制策略。该策略能够满足车辆用户用车时间和容量的个性化需求,同时有效避免了荷电状态超限和充放电电流倍率过大对电池造成的不利影响。最后,通过两个算例对提出的模型和控制策略进行了研究分析,验证了模型与策略的可靠性。

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