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Power measurement using the wavelet transform

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2 Author(s)
Weon-Ki Yoon ; Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA ; Devaney, M.J.

This paper provides the theoretical basis for and demonstrates the practical application of power/energy and rms measurements directly from the wavelet transform data associated with each voltage current element pair. The advantage of using the wavelet transform data directly is that it provides the distribution of the power and energy with respect to the individual frequency bands associated with each level of the wavelet analysis. Frequency separation into the various wavelet levels is achieved using IIR filters because their magnitude characteristics are much better than typical FIR filters of equivalent complexity. The IIR polyphase network strategy yields a simpler wavelet filter bank design

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Instrumentation and Measurement, IEEE Transactions on  (Volume:47 ,  Issue: 5 )