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电网技术  2010 

基于时频原子方法的电压闪变检测方法

, PP. 94-97

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Abstract:

提出了一种基于时频原子方法的电压闪变检测方法。该方法将电压闪变信号通过匹配追踪的方式分解成一系列时频原子,其中每一个原子都来自于冗余的时频原子库,选择的原子可以最好地匹配信号结构。通过对所选原子的频率参数进行取舍,从而达到低通滤波的目的。由于该方法中不含有卷积运算,因此避免了边界效应。仿真结果表明,该方法不仅能够对电压闪变信号进行不失真地包络检波,而且能避免传统滤波带来的边界效应。

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