2025-02-23T03:37:34-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: Query fl=%2A&wt=json&json.nl=arrarr&q=id%3A%22eiekhpieduua-article-218904%22&qt=morelikethis&rows=5
2025-02-23T03:37:34-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: => GET http://localhost:8983/solr/biblio/select?fl=%2A&wt=json&json.nl=arrarr&q=id%3A%22eiekhpieduua-article-218904%22&qt=morelikethis&rows=5
2025-02-23T03:37:34-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: <= 200 OK
2025-02-23T03:37:34-05:00 DEBUG: Deserialized SOLR response
BREAKDOWN VOLTAGE OF MICRON RANGE AIR INCLUSIONS IN CAPACITOR PAPER

BREAKDOWN VOLTAGE OF MICRON RANGE AIR INCLUSIONS IN CAPACITOR PAPER

Purpose. To substantiate the breakdown mechanism of capacitor paper on the basis of numerical-field models with segmented cross-sections of cylindrical volumes of air and water, and also use the proposed models to determine the breakdown strength of air in micron-sized gaps under normal conditions....

Full description

Saved in:
Bibliographic Details
Main Author: Palchykov, O. O.
Format: Article
Language:English
Ukrainian
Published: National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2020
Subjects:
электрический пробой
модель конденсаторной бумаги
микронный промежуток
электростатическое поле
метод конечных элементов
621.3.048.8
electrical breakdown
model of capacitor paper
micron gap
electrostatic field
finite element method
Online Access:http://eie.khpi.edu.ua/article/view/2074-272X.2020.6.05
Tags: Add Tag
No Tags, Be the first to tag this record!
id eiekhpieduua-article-218904
record_format ojs
spelling eiekhpieduua-article-2189042020-12-16T14:28:15Z BREAKDOWN VOLTAGE OF MICRON RANGE AIR INCLUSIONS IN CAPACITOR PAPER ПРОБИВНОЕ НАПРЯЖЕНИЕ ВОЗДУШНЫХ ВКЛЮЧЕНИЙ МИКРОННОГО ДИАПАЗОНА В КОНДЕНСАТОРНОЙ БУМАГЕ Palchykov, O. O. электрический пробой модель конденсаторной бумаги микронный промежуток электростатическое поле метод конечных элементов 621.3.048.8 electrical breakdown model of capacitor paper micron gap electrostatic field finite element method 621.3.048.8 Purpose. To substantiate the breakdown mechanism of capacitor paper on the basis of numerical-field models with segmented cross-sections of cylindrical volumes of air and water, and also use the proposed models to determine the breakdown strength of air in micron-sized gaps under normal conditions. Methodology. The model bases on a finite element solution to an electrostatic problem in a volume of capacitor paper consisting of cellulose and pores with air and water. First, the possible scenarios for the growth of breakdown in capacitor paper are analyzed and to the conclusion is made, that complete breakdown developed from a partial breakdown in the air cavity. A brand of capacitor paper is chosen in such a way that when its thickness changed, the breakdown strength of the electric field changed over a wide range. Then, for the paper with the lowest average electric field intensity the possibility of explaining the complete breakdown by the breakdown of air segments on the basis of the Paschen dependence is checked. Further points of the obtained dependence by constructing models of papers of the same brand and a different thickness under the assumption of the similarity of electrostatic fields are determined. As such a criterion, the constancy of the equivalent effective permittivity are taken. Results. The dependence of the breakdown strength of the air in the range of 1.36...5.54 μm under normal conditions is determined. The obtained relationship is between the Peschot and Taev curves. Originality. For the first time, the possibility of indirectly estimation the breakdown strength of an insulating material using an electrostatic field model is indicated. Practical value. The proposed method for the numerical calculation of the breakdown voltage of air inclusions in the presence of water inclusions in the thickness of solid insulation can be applied to other types of solid thin-layer insulation. Полученная в работе зависимость напряженности электрического поля воздуха от длины разрядного промежутка удовлетворительно объясняет значения пробивных напряжений образцов конденсаторной бумаги при изменении их марок и толщины. Построена зависимость пробивной напряженности воздуха при нормальных условиях в диапазоне 1,36…5,54 мкм на основании расчета электростатических полей в моделях конденсаторной бумаги с сегментными поперечными сечениями цилиндрических объемов воздуха и воды. Проведено сопоставление полученной зависимости с известными экспериментальными данными. Полученные данные в диапазоне 2…5,54 мкм наиболее близки экспериментальным данным Пешо. National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2020-12-13 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2020.6.05 10.20998/2074-272X.2020.6.05 Electrical Engineering & Electromechanics; No. 6 (2020); 30-34 Электротехника и Электромеханика; № 6 (2020); 30-34 Електротехніка і Електромеханіка; № 6 (2020); 30-34 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/2074-272X.2020.6.05/218682 http://eie.khpi.edu.ua/article/view/2074-272X.2020.6.05/218683 Copyright (c) 2020 O. O. Palchykov https://creativecommons.org/licenses/by-nc/4.0
institution Electrical Engineering & Electromechanics
collection OJS
language English
Ukrainian
topic электрический пробой
модель конденсаторной бумаги
микронный промежуток
электростатическое поле
метод конечных элементов
621.3.048.8
electrical breakdown
model of capacitor paper
micron gap
electrostatic field
finite element method
621.3.048.8
spellingShingle электрический пробой
модель конденсаторной бумаги
микронный промежуток
электростатическое поле
метод конечных элементов
621.3.048.8
electrical breakdown
model of capacitor paper
micron gap
electrostatic field
finite element method
621.3.048.8
Palchykov, O. O.
BREAKDOWN VOLTAGE OF MICRON RANGE AIR INCLUSIONS IN CAPACITOR PAPER
topic_facet электрический пробой
модель конденсаторной бумаги
микронный промежуток
электростатическое поле
метод конечных элементов
621.3.048.8
electrical breakdown
model of capacitor paper
micron gap
electrostatic field
finite element method
621.3.048.8
format Article
author Palchykov, O. O.
author_facet Palchykov, O. O.
author_sort Palchykov, O. O.
title BREAKDOWN VOLTAGE OF MICRON RANGE AIR INCLUSIONS IN CAPACITOR PAPER
title_short BREAKDOWN VOLTAGE OF MICRON RANGE AIR INCLUSIONS IN CAPACITOR PAPER
title_full BREAKDOWN VOLTAGE OF MICRON RANGE AIR INCLUSIONS IN CAPACITOR PAPER
title_fullStr BREAKDOWN VOLTAGE OF MICRON RANGE AIR INCLUSIONS IN CAPACITOR PAPER
title_full_unstemmed BREAKDOWN VOLTAGE OF MICRON RANGE AIR INCLUSIONS IN CAPACITOR PAPER
title_sort breakdown voltage of micron range air inclusions in capacitor paper
title_alt ПРОБИВНОЕ НАПРЯЖЕНИЕ ВОЗДУШНЫХ ВКЛЮЧЕНИЙ МИКРОННОГО ДИАПАЗОНА В КОНДЕНСАТОРНОЙ БУМАГЕ
description Purpose. To substantiate the breakdown mechanism of capacitor paper on the basis of numerical-field models with segmented cross-sections of cylindrical volumes of air and water, and also use the proposed models to determine the breakdown strength of air in micron-sized gaps under normal conditions. Methodology. The model bases on a finite element solution to an electrostatic problem in a volume of capacitor paper consisting of cellulose and pores with air and water. First, the possible scenarios for the growth of breakdown in capacitor paper are analyzed and to the conclusion is made, that complete breakdown developed from a partial breakdown in the air cavity. A brand of capacitor paper is chosen in such a way that when its thickness changed, the breakdown strength of the electric field changed over a wide range. Then, for the paper with the lowest average electric field intensity the possibility of explaining the complete breakdown by the breakdown of air segments on the basis of the Paschen dependence is checked. Further points of the obtained dependence by constructing models of papers of the same brand and a different thickness under the assumption of the similarity of electrostatic fields are determined. As such a criterion, the constancy of the equivalent effective permittivity are taken. Results. The dependence of the breakdown strength of the air in the range of 1.36...5.54 μm under normal conditions is determined. The obtained relationship is between the Peschot and Taev curves. Originality. For the first time, the possibility of indirectly estimation the breakdown strength of an insulating material using an electrostatic field model is indicated. Practical value. The proposed method for the numerical calculation of the breakdown voltage of air inclusions in the presence of water inclusions in the thickness of solid insulation can be applied to other types of solid thin-layer insulation.
publisher National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”
publishDate 2020
url http://eie.khpi.edu.ua/article/view/2074-272X.2020.6.05
work_keys_str_mv AT palchykovoo breakdownvoltageofmicronrangeairinclusionsincapacitorpaper
AT palchykovoo probivnoenaprâženievozdušnyhvklûčenijmikronnogodiapazonavkondensatornojbumage
first_indexed 2024-06-01T14:39:43Z
last_indexed 2024-06-01T14:39:43Z
_version_ 1800670055233486848

Similar Items