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基于Teager-Kaiser能量算子Rife-Vincent窗频谱校正的电压闪变测量

, PP. 248-256

Keywords: 电压闪变,Teager-Kaiser能量算子,Rife-Vincent窗,改进FFT,电能质量

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Abstract:

分析了Teager-Kaiser能量算子的构成和Rife-Vincent窗的旁瓣特性,通过Teager-Kaiser算子快速提取电压闪变包络,将包络参数进行Rife-Vincent窗改进FFT谱分析与校正,简化IEC推荐的闪变测量过程,提出并建立了基于Teager-Kaiser能量算子Rife-Vincent窗频谱校正的电压闪变测量算法。仿真试验结果表明,本文提出的算法能有效克服单一频率调幅波频率变化、多频率成分调幅波、电网基波频率波动、谐波与间谐波以及白噪声对检测结果的影响,与传统电压闪变检测方法相比,设计实现简单、计算量小,测量结果精确、稳定,可用于电压闪变参数的在线监测。

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