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Energies 2017, 10(1), 97; doi:10.3390/en10010097

A Wavelet-Modified ESPRIT Hybrid Method for Assessment of Spectral Components from 0 to 150 kHz

1
Department of Engineering, University of Naples Parthenope, Centro Direzionale of Naples, Is C4, 80133 Naples, Italy
2
Department of Electrical Engineering and Information Technology, University of Naples Federico II, Via Claudio, 21, 80138 Naples, Italy
3
Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden
*
Author to whom correspondence should be addressed.
Academic Editor: Birgitte Bak-Jensen
Received: 11 November 2016 / Revised: 2 January 2017 / Accepted: 11 January 2017 / Published: 14 January 2017
(This article belongs to the Special Issue Distribution Power Systems and Power Quality)
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Abstract

Waveform distortions are an important issue in distribution systems. In particular, the assessment of very wide spectra, that include also components in the 2–150 kHz range, has recently become an issue of great interest. This is due to the increasing presence of high-spectral emission devices like end-user devices and distributed generation systems. This study proposed a new sliding-window wavelet-modified estimation of signal parameters by rotational invariance technique (ESPRIT) method, particularly suitable for the spectral analysis of waveforms that have very wide spectra. The method is very accurate and requires reduced computational effort. It can be applied successfully to detect spectral components in the range of 0–150 kHz introduced both by distributed power plants, such as wind and photovoltaic generation systems, and by end-user equipment connected to grids through static converters, such as fluorescent lamps. View Full-Text
Keywords: waveform distortion; high-frequency spectral components; wavelet transform; modified estimation of signal parameters by rotational invariancetechnique (ESPRIT); power quality waveform distortion; high-frequency spectral components; wavelet transform; modified estimation of signal parameters by rotational invariancetechnique (ESPRIT); power quality
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Alfieri, L.; Bracale, A.; Carpinelli, G.; Larsson, A. A Wavelet-Modified ESPRIT Hybrid Method for Assessment of Spectral Components from 0 to 150 kHz. Energies 2017, 10, 97.

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