A Reduced Prony's Method in Power-Quality Analysis-Parameters Selection

This paper presents a new modification of the least-squares Prony's method for power-quality analysis in terms of estimation of harmonics and interharmonics in an electric power signal. The so-called reduced Prony's method can be competitive, in some specific case, to the Fourier transform...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2010-04, Vol.25 (2), p.979-986
Main Authors: Zygarlicki, J., Zygarlicka, M., Mroczka, J., Latawiec, K.J.
Format: Article
Language:English
Subjects:
Applied sciences
Damping
Disturbances. Regulation. Protection
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Frequency
Harmonic analysis
Least squares methods
Numerical stability
Operation. Load control. Reliability
Power electronics, power supplies
Power networks and lines
Power quality
Power quality (PQ)
Power system harmonics
Signal analysis
Signal processing
Signal processing algorithms
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Summary:This paper presents a new modification of the least-squares Prony's method for power-quality analysis in terms of estimation of harmonics and interharmonics in an electric power signal. The so-called reduced Prony's method can be competitive, in some specific case, to the Fourier transformation method and the classical LS Prony's method. The modification constitutes in a specific selection of a constant frequency vector in a Fourier-like manner leading to a remarkable reduction of the computational burden and enabling online real-time computations. In addition, a sampling frequency and an analysis window length can be selected to provide the numerical stability of the new algorithm.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2009.2034745