【摘 要】
：
频率是电力系统运行中的重要参数,电力系统仿真计算中必须考虑电力设备的频率特性。为此在电动机物理Park模型的基础上,重新定义电动机模型的实用变量,提出了考虑频率变化的
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频率是电力系统运行中的重要参数,电力系统仿真计算中必须考虑电力设备的频率特性。为此在电动机物理Park模型的基础上,重新定义电动机模型的实用变量,提出了考虑频率变化的电动机新定义3阶实用模型。传统定义3阶实用模型在实际应用中往往忽略了频率的导数项,由此给系统仿真带来了误差;而在新定义3阶实用模型中,实用变量的定义均不包含频率,电动势为磁链的线性关系,在电动势求导过程中不会出现频率的导数项。与传统定义3阶实用模型相比,该新定义3阶实用模型能够在不增加模型阶数的前提下准确考虑频率的影响。通过仿真算例验证了新定义3阶实用模型的准确性和有效性。
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