IDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES

Introduction. High-voltage insulation systems always have some background level of the partial discharges, which does not have any significant effect on the life of the electrical insulation design. At the same time, partial discharges destroy high-voltage insulation, leading to a carburization zone...

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Autores principales:	G. V. Bezprozvannych, A. G. Kyessayev, I. A. Mirchuk, A. V. Roginskiy
Formato:	article
Lenguaje:	EN RU UK
Publicado:	National Technical University "Kharkiv Polytechnic Institute" 2019
Materias:	technological defects partial discharges voltage of the start of partial discharges glass-mica paper tape amplitude of pulses of partial discharges location of the defect Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/1310a0ca287a4d579d98ef38cb3f1529
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spelling	oai:doaj.org-article:1310a0ca287a4d579d98ef38cb3f15292021-12-02T16:19:21ZIDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES10.20998/2074-272X.2019.4.082074-272X2309-3404https://doaj.org/article/1310a0ca287a4d579d98ef38cb3f15292019-08-01T00:00:00Zhttp://eie.khpi.edu.ua/article/view/2074-272X.2019.4.08/176022https://doaj.org/toc/2074-272Xhttps://doaj.org/toc/2309-3404Introduction. High-voltage insulation systems always have some background level of the partial discharges, which does not have any significant effect on the life of the electrical insulation design. At the same time, partial discharges destroy high-voltage insulation, leading to a carburization zone around the defect. This is the «hidden» period of development of the defect. The development of a defect zone, sooner or later, leads to an arc breakdown of the entire insulating gap. Purpose. The substantiation of the efficiency of detection of technological defects in high-voltage solid insulation of electrical insulating structures according to the characteristics of partial discharges. Methodology. The conditions for the occurrence of partial discharges in the thickness of the polymer insulation are considered. The possible values of the voltage of the beginning of partial discharges are determined for a model of a cylindrical air gap near the conductor of a power cable. It is shown that with the same applied voltages to high-voltage insulation, in the latter case, air inclusions of smaller thickness are activated in comparison with a flat structure. Practical value. The efficiency of detection of technological defects in solid composite case insulation of the stator winding of turbo- and hydrogenerators is shown. Based on the comparison of the amplitude of the pulses of partial discharges of positive and negative polarity, the estimated location of the technological defects in the insulation has been established. G. V. BezprozvannychA. G. KyessayevI. A. MirchukA. V. RoginskiyNational Technical University "Kharkiv Polytechnic Institute"articletechnological defectspartial dischargesvoltage of the start of partial dischargesglass-mica paper tapeamplitude of pulses of partial dischargeslocation of the defectElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENRUUKElectrical engineering & Electromechanics, Iss 4, Pp 53-58 (2019)
institution	DOAJ
collection	DOAJ
language	EN RU UK
topic	technological defects partial discharges voltage of the start of partial discharges glass-mica paper tape amplitude of pulses of partial discharges location of the defect Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	technological defects partial discharges voltage of the start of partial discharges glass-mica paper tape amplitude of pulses of partial discharges location of the defect Electrical engineering. Electronics. Nuclear engineering TK1-9971 G. V. Bezprozvannych A. G. Kyessayev I. A. Mirchuk A. V. Roginskiy IDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES
description	Introduction. High-voltage insulation systems always have some background level of the partial discharges, which does not have any significant effect on the life of the electrical insulation design. At the same time, partial discharges destroy high-voltage insulation, leading to a carburization zone around the defect. This is the «hidden» period of development of the defect. The development of a defect zone, sooner or later, leads to an arc breakdown of the entire insulating gap. Purpose. The substantiation of the efficiency of detection of technological defects in high-voltage solid insulation of electrical insulating structures according to the characteristics of partial discharges. Methodology. The conditions for the occurrence of partial discharges in the thickness of the polymer insulation are considered. The possible values of the voltage of the beginning of partial discharges are determined for a model of a cylindrical air gap near the conductor of a power cable. It is shown that with the same applied voltages to high-voltage insulation, in the latter case, air inclusions of smaller thickness are activated in comparison with a flat structure. Practical value. The efficiency of detection of technological defects in solid composite case insulation of the stator winding of turbo- and hydrogenerators is shown. Based on the comparison of the amplitude of the pulses of partial discharges of positive and negative polarity, the estimated location of the technological defects in the insulation has been established.
format	article
author	G. V. Bezprozvannych A. G. Kyessayev I. A. Mirchuk A. V. Roginskiy
author_facet	G. V. Bezprozvannych A. G. Kyessayev I. A. Mirchuk A. V. Roginskiy
author_sort	G. V. Bezprozvannych
title	IDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES
title_short	IDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES
title_full	IDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES
title_fullStr	IDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES
title_full_unstemmed	IDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES
title_sort	identification of technological defects in high-voltage solid insulation of electrical insulation structures on the characteristics of partial discharges
publisher	National Technical University "Kharkiv Polytechnic Institute"
publishDate	2019
url	https://doaj.org/article/1310a0ca287a4d579d98ef38cb3f1529
work_keys_str_mv	AT gvbezprozvannych identificationoftechnologicaldefectsinhighvoltagesolidinsulationofelectricalinsulationstructuresonthecharacteristicsofpartialdischarges AT agkyessayev identificationoftechnologicaldefectsinhighvoltagesolidinsulationofelectricalinsulationstructuresonthecharacteristicsofpartialdischarges AT iamirchuk identificationoftechnologicaldefectsinhighvoltagesolidinsulationofelectricalinsulationstructuresonthecharacteristicsofpartialdischarges AT avroginskiy identificationoftechnologicaldefectsinhighvoltagesolidinsulationofelectricalinsulationstructuresonthecharacteristicsofpartialdischarges
_version_	1718384154913013760

IDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES

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