Applications of the windowed FFT to electric power quality assessment

This paper discusses the application of the windowed fast Fourier transform to electric power quality assessment. The windowed FFT is a time windowed version of the discrete time Fourier transform. The window width may be adjusted and shifted to scan through large volumes of power quality data. Narr...

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Bibliographic Details
Published in:IEEE transactions on power delivery 1999-10, Vol.14 (4), p.1411-1416
Main Authors: Heydt, G.T., Fjeld, P.S., Liu, C.C., Pierce, D., Tu, L., Hensley, G.
Format: Article
Language:English
Subjects:
Adjustment
Electric power
Electric power generation
Fast Fourier transforms
Fourier transforms
Frequency domain analysis
Mathematical analysis
Power measurement
Power quality
Quality assessment
Signal processing
Signal resolution
Student members
Voltage
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Summary:This paper discusses the application of the windowed fast Fourier transform to electric power quality assessment. The windowed FFT is a time windowed version of the discrete time Fourier transform. The window width may be adjusted and shifted to scan through large volumes of power quality data. Narrow window widths are used for detailed analyses, and wide window widths are used to move rapidly across archived power quality data measurements. The mathematics of the method are discussed and applications are illustrated.
ISSN:0885-8977
1937-4208
DOI:10.1109/61.796235