DocumentCode :
1450392
Title :
A Reduced Prony´s Method in Power-Quality Analysis—Parameters Selection
Author :
Zygarlicki, Jaroslaw ; Zygarlicka, Malgorzata ; Mroczka, Janusz ; Latawiec, Krzysztof J.
Author_Institution :
Dept. of Electr., Control & Comput. Eng., Opole Univ. of Technol., Opole, Poland
Volume :
25
Issue :
2
fYear :
2010
fDate :
4/1/2010 12:00:00 AM
Firstpage :
979
Lastpage :
986
Abstract :
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.
Keywords :
Fourier transforms; least squares approximations; power supply quality; Fourier transformation method; electric power signal; least-squares method; numerical stability; parameters selection; power quality analysis; reduced Prony method; Damping; Frequency; Harmonic analysis; Least squares methods; Numerical stability; Power quality; Power system harmonics; Signal analysis; Signal processing; Signal processing algorithms; Power quality (PQ); signal analysis; signal processing;
fLanguage :
English
Journal_Title :
Power Delivery, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8977
Type :
jour
DOI :
10.1109/TPWRD.2009.2034745
Filename :
5437463
Link To Document :
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