EFFECT OF A DIELECTRIC BARRIER ON THE ELECTRIC FIELD DISTRIBUTION IN HIGH-VOLTAGE COMPOSITE INSULATION OF ELECTRIC MACHINES
Introduction. Modern high-voltage systems for composite insulation of electrical machines consist of tape glass mica paper materials (dry or pre-impregnated). The electrical characteristics of a multilayer composite insulation system are determined by both the fractional content of the individual co...
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| Date: | 2018 |
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National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine
2018
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| Online Access: | http://eie.khpi.edu.ua/article/view/2074-272X.2018.6.09 |
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eiekhpieduua-article-150311 |
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Electrical Engineering & Electromechanics |
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2018-12-14T09:40:35Z |
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high-voltage composite insulation dielectric barrier fiberglass substrate interfacial polarization electric field distribution long-term electrical strength 621.319 |
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high-voltage composite insulation dielectric barrier fiberglass substrate interfacial polarization electric field distribution long-term electrical strength 621.319 Bezprozvannych, G. V. Boyko, A. N. Roginskiy, A. V. EFFECT OF A DIELECTRIC BARRIER ON THE ELECTRIC FIELD DISTRIBUTION IN HIGH-VOLTAGE COMPOSITE INSULATION OF ELECTRIC MACHINES |
| topic_facet |
high-voltage composite insulation dielectric barrier fiberglass substrate interfacial polarization electric field distribution long-term electrical strength 621.319 высоковольтная композитная изоляция диэлектрический барьер стекловолокнистая подложка межфазная поляризация распределение электрического поля длительная электрическая прочность 621.319 |
| format |
Article |
| author |
Bezprozvannych, G. V. Boyko, A. N. Roginskiy, A. V. |
| author_facet |
Bezprozvannych, G. V. Boyko, A. N. Roginskiy, A. V. |
| author_sort |
Bezprozvannych, G. V. |
| title |
EFFECT OF A DIELECTRIC BARRIER ON THE ELECTRIC FIELD DISTRIBUTION IN HIGH-VOLTAGE COMPOSITE INSULATION OF ELECTRIC MACHINES |
| title_short |
EFFECT OF A DIELECTRIC BARRIER ON THE ELECTRIC FIELD DISTRIBUTION IN HIGH-VOLTAGE COMPOSITE INSULATION OF ELECTRIC MACHINES |
| title_full |
EFFECT OF A DIELECTRIC BARRIER ON THE ELECTRIC FIELD DISTRIBUTION IN HIGH-VOLTAGE COMPOSITE INSULATION OF ELECTRIC MACHINES |
| title_fullStr |
EFFECT OF A DIELECTRIC BARRIER ON THE ELECTRIC FIELD DISTRIBUTION IN HIGH-VOLTAGE COMPOSITE INSULATION OF ELECTRIC MACHINES |
| title_full_unstemmed |
EFFECT OF A DIELECTRIC BARRIER ON THE ELECTRIC FIELD DISTRIBUTION IN HIGH-VOLTAGE COMPOSITE INSULATION OF ELECTRIC MACHINES |
| title_sort |
effect of a dielectric barrier on the electric field distribution in high-voltage composite insulation of electric machines |
| title_alt |
ВЛИЯНИЕ ДИЭЛЕКТРИЧЕСКОГО БАРЬЕРА НА РАСПРЕДЕЛЕНИЕ ЭЛЕКТРИЧЕСКОГО ПОЛЯ В ВЫСОКОВОЛЬТНОЙ КОМПОЗИТНОЙ ИЗОЛЯЦИИ ЭЛЕКТРИЧЕСКИХ МАШИН |
| description |
Introduction. Modern high-voltage systems for composite insulation of electrical machines consist of tape glass mica paper materials (dry or pre-impregnated). The electrical characteristics of a multilayer composite insulation system are determined by both the fractional content of the individual components and their electrophysical properties. Purpose. The analysis of the influence of electrophysical characteristics and thickness (fraction) of the dielectric barrier on the distribution of the electric field in the composite high-voltage insulation of electrical machines. Methodology. Simulation of surface charge accumulation at the interface between the substrate and the dielectric barrier is based on the Maxwell–Wagner theory for interfacial polarization. Practical value. The influence of the electrophysical characteristics and thickness of the dielectric barrier on the distribution of the electric field has been established. In the steady state, the electric field strength in the dielectric barrier exceeds the average value by 50 %. In the region of small transition times (up to 1 s), the relative dielectric constant of the barrier has a significant effect on the distribution of the electric field. The use of a dielectric barrier with a higher dielectric constant and fractional content in comparison with the substrate leads to an increase in electric field strength by 5 % relative to the average value in composite insulation. Experimental studies of the long-term electrical strength of glass mica-belt ribbons in the cured (thermosetting) state are consistent with the simulation results. Composite insulation based on glass fiber mica tape with a high content of the mica barrier and fiberglass of smaller thickness has (8-16) % higher values of long-term electric strength. |
| publisher |
National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine |
| publishDate |
2018 |
| url |
http://eie.khpi.edu.ua/article/view/2074-272X.2018.6.09 |
| work_keys_str_mv |
AT bezprozvannychgv effectofadielectricbarrierontheelectricfielddistributioninhighvoltagecompositeinsulationofelectricmachines AT boykoan effectofadielectricbarrierontheelectricfielddistributioninhighvoltagecompositeinsulationofelectricmachines AT roginskiyav effectofadielectricbarrierontheelectricfielddistributioninhighvoltagecompositeinsulationofelectricmachines AT bezprozvannychgv vliâniediélektričeskogobarʹeranaraspredelenieélektričeskogopolâvvysokovolʹtnojkompozitnojizolâciiélektričeskihmašin AT boykoan vliâniediélektričeskogobarʹeranaraspredelenieélektričeskogopolâvvysokovolʹtnojkompozitnojizolâciiélektričeskihmašin AT roginskiyav vliâniediélektričeskogobarʹeranaraspredelenieélektričeskogopolâvvysokovolʹtnojkompozitnojizolâciiélektričeskihmašin |
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2025-07-17T11:47:25Z |
| last_indexed |
2025-07-17T11:47:25Z |
| _version_ |
1850411814382206976 |
| spelling |
eiekhpieduua-article-1503112018-12-14T09:40:35Z EFFECT OF A DIELECTRIC BARRIER ON THE ELECTRIC FIELD DISTRIBUTION IN HIGH-VOLTAGE COMPOSITE INSULATION OF ELECTRIC MACHINES ВЛИЯНИЕ ДИЭЛЕКТРИЧЕСКОГО БАРЬЕРА НА РАСПРЕДЕЛЕНИЕ ЭЛЕКТРИЧЕСКОГО ПОЛЯ В ВЫСОКОВОЛЬТНОЙ КОМПОЗИТНОЙ ИЗОЛЯЦИИ ЭЛЕКТРИЧЕСКИХ МАШИН Bezprozvannych, G. V. Boyko, A. N. Roginskiy, A. V. high-voltage composite insulation dielectric barrier fiberglass substrate interfacial polarization electric field distribution long-term electrical strength 621.319 высоковольтная композитная изоляция диэлектрический барьер стекловолокнистая подложка межфазная поляризация распределение электрического поля длительная электрическая прочность 621.319 Introduction. Modern high-voltage systems for composite insulation of electrical machines consist of tape glass mica paper materials (dry or pre-impregnated). The electrical characteristics of a multilayer composite insulation system are determined by both the fractional content of the individual components and their electrophysical properties. Purpose. The analysis of the influence of electrophysical characteristics and thickness (fraction) of the dielectric barrier on the distribution of the electric field in the composite high-voltage insulation of electrical machines. Methodology. Simulation of surface charge accumulation at the interface between the substrate and the dielectric barrier is based on the Maxwell–Wagner theory for interfacial polarization. Practical value. The influence of the electrophysical characteristics and thickness of the dielectric barrier on the distribution of the electric field has been established. In the steady state, the electric field strength in the dielectric barrier exceeds the average value by 50 %. In the region of small transition times (up to 1 s), the relative dielectric constant of the barrier has a significant effect on the distribution of the electric field. The use of a dielectric barrier with a higher dielectric constant and fractional content in comparison with the substrate leads to an increase in electric field strength by 5 % relative to the average value in composite insulation. Experimental studies of the long-term electrical strength of glass mica-belt ribbons in the cured (thermosetting) state are consistent with the simulation results. Composite insulation based on glass fiber mica tape with a high content of the mica barrier and fiberglass of smaller thickness has (8-16) % higher values of long-term electric strength. Представлены результаты распределения электрического поля в высоковольтной композитной изоляции на основе предложенной математической модели накопления поверхностного заряда на границе раздела подложка – барьер. В установившемся режиме напряженность электрического поля в диэлектрическом барьере может превышать среднее значение на 50 % в зависимости от электрофизических характеристик и толщины компонентов. Показано, что в области малых времен переходного процесса на характер распределения электрического поля влияют как относительная диэлектрическая проницаемость, так и толщина диэлектрического барьера. Экспериментальная проверка выполнена для пяти типоразмеров стеклослюдобумажной ленты по 5-ть макетов в каждой. Установлено, что композитная изоляция с повышенным содержанием слюдинитового барьера и стеклотканью меньшей толщины имеет на (8-16) % более высокие значения длительной электрической прочности. National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2018-12-12 Article Article Peer-reviewed Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2018.6.09 10.20998/2074-272X.2018.6.09 Electrical Engineering & Electromechanics; No. 6 (2018); 63-67 Электротехника и Электромеханика; № 6 (2018); 63-67 Електротехніка і Електромеханіка; № 6 (2018); 63-67 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/2074-272X.2018.6.09/149841 http://eie.khpi.edu.ua/article/view/2074-272X.2018.6.09/149842 Copyright (c) 2018 G. V. Bezprozvannych, A. N. Boyko, A. V. Roginskiy https://creativecommons.org/licenses/by-nc/4.0 |