NDLI: Sliding window recursive DFT with dyadic downsampling — A new strategy for time-varying power harmonic decomposition

Content Provider	IEEE Xplore Digital Library
Author	Silveira, P.M. Duque, C. Baldwin, T. Ribeiro, P.F.
Copyright Year	2009
Description	Author affiliation: Itajubá Federal University, Itajubá, MG, Brazil, and CAPS/FSU (Silveira, P.M.) \|\| CAPS/FSU (Baldwin, T.) \|\| Electrical Engineering Dept., UFJF, Juiz de Fora MG, Brazil, and CAPS/FSU (Center for Advanced Power Systems/Florida State University) (Duque, C.) \|\| Calvin College (Ribeiro, P.F.)
Abstract	The main objective of this paper is to present a time-varying harmonic decomposition using the sliding-window Discrete Fourier Transform including a dyadic downsampling. The method has been conceived to decompose and to visualize time-varying harmonics up to $15^{th}$ order, with a low computational effort. The downsampling must be done carefully in order to impose no aliasing error to the lower order harmonics. The algorithm has been very efficient and helpful when tracking time-varying power harmonic and it has been applied to track harmonic distortion and understand time-dependent power quality events. The method presents potential for other applications such as control and protection.
Starting Page	1
Ending Page	6
File Size	2672811
Page Count	6
File Format	PDF
ISBN	9781424442416
ISSN	19449925
DOI	10.1109/PES.2009.5275212
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-26
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power system harmonics Power harmonic filters Frequency Discrete Fourier transforms Power quality Sampling methods Harmonic distortion Protection Failure analysis Pattern analysis time-varying harmonics harmonic decomposition recursive DFT
Content Type	Text
Resource Type	Article

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