EFFICIENCY OF APPLICATION OF SEMICONDUCTIVE COATINGS FOR REGULATION OF ELECTRIC FIELD IN HIGH-VOLTAGE INSULATION OF ELECTRIC MACHINES
Introduction. Intensification of competition and the desire to reduce the cost of high-voltage electric machines due to a significant increase in the electrical and thermal loads of the electrical insulation system complicate the operation of anti-corona coatings on the insulation surface of the sta...
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| Формат: | Стаття |
| Мова: | English Ukrainian |
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National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine
2019
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| Онлайн доступ: | http://eie.khpi.edu.ua/article/view/2074-272X.2019.6.06 |
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| Назва журналу: | Electrical Engineering & Electromechanics |
Репозитарії
Electrical Engineering & Electromechanics| id |
eiekhpieduua-article-188160 |
|---|---|
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Electrical Engineering & Electromechanics |
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| datestamp_date |
2019-12-20T19:48:41Z |
| collection |
OJS |
| language |
English Ukrainian |
| topic |
frontal part of the rod external partial discharges electric field regulation of the electric field semiconductive coating surface resistivity distribution of electric potential stability of nonlinear properties long-term electric and thermal agin 621.319 |
| spellingShingle |
frontal part of the rod external partial discharges electric field regulation of the electric field semiconductive coating surface resistivity distribution of electric potential stability of nonlinear properties long-term electric and thermal agin 621.319 Bezprozvannych, G. V. Roginskiy, A. V. EFFICIENCY OF APPLICATION OF SEMICONDUCTIVE COATINGS FOR REGULATION OF ELECTRIC FIELD IN HIGH-VOLTAGE INSULATION OF ELECTRIC MACHINES |
| topic_facet |
лобовая часть стержня внешние частичные разряды электрическое поле регулирование электрического поля противокоронне полупроводящее покрытие удельное поверхностное сопротивление распределение электрического потенциала стабильность нелинейных свойств 621.319 frontal part of the rod external partial discharges electric field regulation of the electric field semiconductive coating surface resistivity distribution of electric potential stability of nonlinear properties long-term electric and thermal agin 621.319 |
| format |
Article |
| author |
Bezprozvannych, G. V. Roginskiy, A. V. |
| author_facet |
Bezprozvannych, G. V. Roginskiy, A. V. |
| author_sort |
Bezprozvannych, G. V. |
| title |
EFFICIENCY OF APPLICATION OF SEMICONDUCTIVE COATINGS FOR REGULATION OF ELECTRIC FIELD IN HIGH-VOLTAGE INSULATION OF ELECTRIC MACHINES |
| title_short |
EFFICIENCY OF APPLICATION OF SEMICONDUCTIVE COATINGS FOR REGULATION OF ELECTRIC FIELD IN HIGH-VOLTAGE INSULATION OF ELECTRIC MACHINES |
| title_full |
EFFICIENCY OF APPLICATION OF SEMICONDUCTIVE COATINGS FOR REGULATION OF ELECTRIC FIELD IN HIGH-VOLTAGE INSULATION OF ELECTRIC MACHINES |
| title_fullStr |
EFFICIENCY OF APPLICATION OF SEMICONDUCTIVE COATINGS FOR REGULATION OF ELECTRIC FIELD IN HIGH-VOLTAGE INSULATION OF ELECTRIC MACHINES |
| title_full_unstemmed |
EFFICIENCY OF APPLICATION OF SEMICONDUCTIVE COATINGS FOR REGULATION OF ELECTRIC FIELD IN HIGH-VOLTAGE INSULATION OF ELECTRIC MACHINES |
| title_sort |
efficiency of application of semiconductive coatings for regulation of electric field in high-voltage insulation of electric machines |
| title_alt |
ЭФФЕКТИВНОСТЬ ПРИМЕНЕНИЯ ПОЛУПРОВОДЯЩИХ ПОКРЫТИЙ ДЛЯ РЕГУЛИРОВАНИЯ ЭЛЕКТРИЧЕСКОГО ПОЛЯ В ВЫСОКОВОЛЬТНОЙ ИЗОЛЯЦИИ ЭЛЕКТРИЧЕСКИХ МАШИН |
| description |
Introduction. Intensification of competition and the desire to reduce the cost of high-voltage electric machines due to a significant increase in the electrical and thermal loads of the electrical insulation system complicate the operation of anti-corona coatings on the insulation surface of the stator winding and increase the intensity of discharge processes, which significantly reduce the life of the insulation in case of failure of the coatings. Purpose. The analysis of the efficiency of alignment of the electric field along the insulation surface of the stator winding of high-voltage electric machines with semiconductor anti-corona coatings. Methodology. A method for calculating the electric potential distribution along the surface of the winding insulation during the use of semiconductive coatings providing alignment decrease the electric field and eliminating the appearance of moving discharges. The reliability of the calculations is confirmed by experimental studies of the potential distribution over the surface of the anti-corona semiconducting non-linear coating along the frontal part of the samples of the rod of the hydrogenerator for a linear voltage of 20 kV. Practical value. The proposed methodology for calculating the distribution of the electric field over the surface of the insulation and the anti-corona semiconductive coating can be applied to justify the length of the coating in the frontal part of high-voltage electrical machines depending on the electrophysical characteristics of the coating, electrical insulation, and thickness. The results of an experimental verification of the stability of the nonlinear properties of coatings during prolonged electrical and thermal aging of specially made coating samples are presented. |
| publisher |
National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine |
| publishDate |
2019 |
| url |
http://eie.khpi.edu.ua/article/view/2074-272X.2019.6.06 |
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AT bezprozvannychgv efficiencyofapplicationofsemiconductivecoatingsforregulationofelectricfieldinhighvoltageinsulationofelectricmachines AT roginskiyav efficiencyofapplicationofsemiconductivecoatingsforregulationofelectricfieldinhighvoltageinsulationofelectricmachines AT bezprozvannychgv éffektivnostʹprimeneniâpoluprovodâŝihpokrytijdlâregulirovaniâélektričeskogopolâvvysokovolʹtnojizolâciiélektričeskihmašin AT roginskiyav éffektivnostʹprimeneniâpoluprovodâŝihpokrytijdlâregulirovaniâélektričeskogopolâvvysokovolʹtnojizolâciiélektričeskihmašin |
| first_indexed |
2025-07-17T11:47:51Z |
| last_indexed |
2025-07-17T11:47:51Z |
| _version_ |
1850411872670449664 |
| spelling |
eiekhpieduua-article-1881602019-12-20T19:48:41Z EFFICIENCY OF APPLICATION OF SEMICONDUCTIVE COATINGS FOR REGULATION OF ELECTRIC FIELD IN HIGH-VOLTAGE INSULATION OF ELECTRIC MACHINES ЭФФЕКТИВНОСТЬ ПРИМЕНЕНИЯ ПОЛУПРОВОДЯЩИХ ПОКРЫТИЙ ДЛЯ РЕГУЛИРОВАНИЯ ЭЛЕКТРИЧЕСКОГО ПОЛЯ В ВЫСОКОВОЛЬТНОЙ ИЗОЛЯЦИИ ЭЛЕКТРИЧЕСКИХ МАШИН Bezprozvannych, G. V. Roginskiy, A. V. лобовая часть стержня внешние частичные разряды электрическое поле регулирование электрического поля противокоронне полупроводящее покрытие удельное поверхностное сопротивление распределение электрического потенциала стабильность нелинейных свойств 621.319 frontal part of the rod external partial discharges electric field regulation of the electric field semiconductive coating surface resistivity distribution of electric potential stability of nonlinear properties long-term electric and thermal agin 621.319 Introduction. Intensification of competition and the desire to reduce the cost of high-voltage electric machines due to a significant increase in the electrical and thermal loads of the electrical insulation system complicate the operation of anti-corona coatings on the insulation surface of the stator winding and increase the intensity of discharge processes, which significantly reduce the life of the insulation in case of failure of the coatings. Purpose. The analysis of the efficiency of alignment of the electric field along the insulation surface of the stator winding of high-voltage electric machines with semiconductor anti-corona coatings. Methodology. A method for calculating the electric potential distribution along the surface of the winding insulation during the use of semiconductive coatings providing alignment decrease the electric field and eliminating the appearance of moving discharges. The reliability of the calculations is confirmed by experimental studies of the potential distribution over the surface of the anti-corona semiconducting non-linear coating along the frontal part of the samples of the rod of the hydrogenerator for a linear voltage of 20 kV. Practical value. The proposed methodology for calculating the distribution of the electric field over the surface of the insulation and the anti-corona semiconductive coating can be applied to justify the length of the coating in the frontal part of high-voltage electrical machines depending on the electrophysical characteristics of the coating, electrical insulation, and thickness. The results of an experimental verification of the stability of the nonlinear properties of coatings during prolonged electrical and thermal aging of specially made coating samples are presented. Представлена методика расчета распределения электрического поля по поверхности изоляции и противокоронного полупроводящего покрытия в лобовой части стержня высоковольтной электрической машины. Получено в зависимости от удельного поверхностного сопротивления полупроводящего покрытия распределение электрического потенциала по поверхности противокоронного покрытия и изоляции. Обоснован диапазон значений удельного поверхностного сопротивления противокоронного покрытия для эффективного регулирования электрического поля. Достоверность расчетов подтверждена экспериментальными исследованиями распределения потенциала по поверхности противокоронного полупроводящего нелинейного покрытия вдоль лобовой части образцов стрежней гидрогенератора на линейное напряжение 20 кВ. Представлены результаты экспериментальной проверки стабильности нелинейных свойств покрытий в процессе длительного электрического и теплового старения специально изготовленных образцов покрытия. Эффективность регулирования электрического поля полупроводящими покрытиями подтверждена результатами испытаний образцов стрежней гидрогенератора СВ 1500/100-12 в исходном состоянии и после комплексного длительного воздействия электрического поля и температуры. National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2019-12-19 Article Article Peer-reviewed Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2019.6.06 10.20998/2074-272X.2019.6.06 Electrical Engineering & Electromechanics; No. 6 (2019); 44-49 Электротехника и Электромеханика; № 6 (2019); 44-49 Електротехніка і Електромеханіка; № 6 (2019); 44-49 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/2074-272X.2019.6.06/187499 http://eie.khpi.edu.ua/article/view/2074-272X.2019.6.06/187500 Copyright (c) 2019 G. V. Bezprozvannych, A. V. Roginskiy https://creativecommons.org/licenses/by-nc/4.0 |