A METHOD OF WAVELET ANALYSIS OF TIME SERIES OF PARAMETERS OF DIELECTRIC ABSORPTION OF ELECTRICAL INSULATING STRUCTURES

Introduction. In the objects of control there are always a number of interfaces, for example, solid insulation – electrode. On contacting surfaces, free surface charges are transferred. Surface conductivity leads to fluctuations in the measured values of the capacitance and the tangent of the dielec...

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Autores principales:	G. V. Bezprozvannych, I. A. Kostiukov
Formato:	article
Lenguaje:	EN RU UK
Publicado:	National Technical University "Kharkiv Polytechnic Institute" 2020
Materias:	dielectric absorption parameters capacitance dielectric loss tangent spectrum of time series low-pass filter decomposition levels approximation and detail wavelet transform Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/6c571e03598a4a8b85053c5dbc9d50f6
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spelling	oai:doaj.org-article:6c571e03598a4a8b85053c5dbc9d50f62021-12-02T17:53:58ZA METHOD OF WAVELET ANALYSIS OF TIME SERIES OF PARAMETERS OF DIELECTRIC ABSORPTION OF ELECTRICAL INSULATING STRUCTURES10.20998/2074-272X.2020.2.082074-272X2309-3404https://doaj.org/article/6c571e03598a4a8b85053c5dbc9d50f62020-04-01T00:00:00Zhttp://eie.khpi.edu.ua/article/view/2074-272X.2020.2.08/201186https://doaj.org/toc/2074-272Xhttps://doaj.org/toc/2309-3404Introduction. In the objects of control there are always a number of interfaces, for example, solid insulation – electrode. On contacting surfaces, free surface charges are transferred. Surface conductivity leads to fluctuations in the measured values of the capacitance and the tangent of the dielectric loss angle of solid insulation, the state of which is determined. The drain off of the surface charge does not lead to a decrease in the scatter of the measured dielectric absorption parameters. One of the main reasons for the significant time spread of the dielectric absorption parameters, and to a large extent (three orders of magnitude) of the dielectric loss tangent are tribo charges caused by triboelectrification of cable structural elements. Tribo charges cause internal noise in electrical insulating structures, masking processes in the polymer insulation itself. Purpose. Substantiation of a method for analyzing the time series of dielectric absorption parameters, which provides increased accuracy of control and diagnostics of solid polymer insulation of electrical insulation structures based on filtering experimental data using wavelet transform. Methodology. The inefficiency of filtering the spectra of time series using a low filter based on the direct Fourier transform is shown. Multilevel wavelet decomposition of the time series of parameters is presented, and the efficiency of applying wavelet transforms to identify high-frequency and low-frequency components in the measured values. Practical value. The method of analyzing the time series of dielectric absorption parameters using the wavelet transform, proposed for the first time, makes it possible to increase the accuracy of monitoring and diagnostics of solid polymer insulation both at the manufacturing stage and in the operation of electrical insulating structures. This method is the basis for creating a database of control results for assessing the state of solid polymer insulation of electrical insulation structures, in particular, power and information cables. G. V. BezprozvannychI. A. KostiukovNational Technical University "Kharkiv Polytechnic Institute"articledielectric absorption parameterscapacitancedielectric loss tangentspectrum of time serieslow-pass filterdecomposition levelsapproximation and detailwavelet transformElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENRUUKElectrical engineering & Electromechanics, Iss 2, Pp 52-58 (2020)
institution	DOAJ
collection	DOAJ
language	EN RU UK
topic	dielectric absorption parameters capacitance dielectric loss tangent spectrum of time series low-pass filter decomposition levels approximation and detail wavelet transform Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	dielectric absorption parameters capacitance dielectric loss tangent spectrum of time series low-pass filter decomposition levels approximation and detail wavelet transform Electrical engineering. Electronics. Nuclear engineering TK1-9971 G. V. Bezprozvannych I. A. Kostiukov A METHOD OF WAVELET ANALYSIS OF TIME SERIES OF PARAMETERS OF DIELECTRIC ABSORPTION OF ELECTRICAL INSULATING STRUCTURES
description	Introduction. In the objects of control there are always a number of interfaces, for example, solid insulation – electrode. On contacting surfaces, free surface charges are transferred. Surface conductivity leads to fluctuations in the measured values of the capacitance and the tangent of the dielectric loss angle of solid insulation, the state of which is determined. The drain off of the surface charge does not lead to a decrease in the scatter of the measured dielectric absorption parameters. One of the main reasons for the significant time spread of the dielectric absorption parameters, and to a large extent (three orders of magnitude) of the dielectric loss tangent are tribo charges caused by triboelectrification of cable structural elements. Tribo charges cause internal noise in electrical insulating structures, masking processes in the polymer insulation itself. Purpose. Substantiation of a method for analyzing the time series of dielectric absorption parameters, which provides increased accuracy of control and diagnostics of solid polymer insulation of electrical insulation structures based on filtering experimental data using wavelet transform. Methodology. The inefficiency of filtering the spectra of time series using a low filter based on the direct Fourier transform is shown. Multilevel wavelet decomposition of the time series of parameters is presented, and the efficiency of applying wavelet transforms to identify high-frequency and low-frequency components in the measured values. Practical value. The method of analyzing the time series of dielectric absorption parameters using the wavelet transform, proposed for the first time, makes it possible to increase the accuracy of monitoring and diagnostics of solid polymer insulation both at the manufacturing stage and in the operation of electrical insulating structures. This method is the basis for creating a database of control results for assessing the state of solid polymer insulation of electrical insulation structures, in particular, power and information cables.
format	article
author	G. V. Bezprozvannych I. A. Kostiukov
author_facet	G. V. Bezprozvannych I. A. Kostiukov
author_sort	G. V. Bezprozvannych
title	A METHOD OF WAVELET ANALYSIS OF TIME SERIES OF PARAMETERS OF DIELECTRIC ABSORPTION OF ELECTRICAL INSULATING STRUCTURES
title_short	A METHOD OF WAVELET ANALYSIS OF TIME SERIES OF PARAMETERS OF DIELECTRIC ABSORPTION OF ELECTRICAL INSULATING STRUCTURES
title_full	A METHOD OF WAVELET ANALYSIS OF TIME SERIES OF PARAMETERS OF DIELECTRIC ABSORPTION OF ELECTRICAL INSULATING STRUCTURES
title_fullStr	A METHOD OF WAVELET ANALYSIS OF TIME SERIES OF PARAMETERS OF DIELECTRIC ABSORPTION OF ELECTRICAL INSULATING STRUCTURES
title_full_unstemmed	A METHOD OF WAVELET ANALYSIS OF TIME SERIES OF PARAMETERS OF DIELECTRIC ABSORPTION OF ELECTRICAL INSULATING STRUCTURES
title_sort	method of wavelet analysis of time series of parameters of dielectric absorption of electrical insulating structures
publisher	National Technical University "Kharkiv Polytechnic Institute"
publishDate	2020
url	https://doaj.org/article/6c571e03598a4a8b85053c5dbc9d50f6
work_keys_str_mv	AT gvbezprozvannych amethodofwaveletanalysisoftimeseriesofparametersofdielectricabsorptionofelectricalinsulatingstructures AT iakostiukov amethodofwaveletanalysisoftimeseriesofparametersofdielectricabsorptionofelectricalinsulatingstructures AT gvbezprozvannych methodofwaveletanalysisoftimeseriesofparametersofdielectricabsorptionofelectricalinsulatingstructures AT iakostiukov methodofwaveletanalysisoftimeseriesofparametersofdielectricabsorptionofelectricalinsulatingstructures
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A METHOD OF WAVELET ANALYSIS OF TIME SERIES OF PARAMETERS OF DIELECTRIC ABSORPTION OF ELECTRICAL INSULATING STRUCTURES

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