DYNAMICS MODEL OF MOISTURE IN PAPER INSULATION-TRANSFORMER OIL SYSTEM IN NON-STATIONARY THERMAL MODES OF THE POWER TRANSFORMER

DYNAMICS MODEL OF MOISTURE IN PAPER INSULATION-TRANSFORMER OIL SYSTEM IN NON-STATIONARY THERMAL MODES OF THE POWER TRANSFORMER

Introduction. An important problem in power transformers resource prognosis is the formation of moisture dynamics trends of transformer insulation. Purpose. Increasing the accuracy of power transformer insulation resource assessment based on accounting of moisture dynamics in interrelation with temp...

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Bibliographic Details
Date:2016
Main Author: Vasilevskij, V. V.
Format: Article
Language:English
Russian
Published: National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2016
Subjects:
oil-paper insulation
power transformer
computer model
moisture dynamics
648.3.048.1
Online Access:http://eie.khpi.edu.ua/article/view/2074-272X.2016.3.02
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Journal Title:Electrical Engineering & Electromechanics

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Electrical Engineering & Electromechanics
id eiekhpieduua-article-71561
record_format ojs
institution Electrical Engineering & Electromechanics
baseUrl_str
datestamp_date 2017-08-21T18:29:44Z
collection OJS
language English
Russian
topic oil-paper insulation
power transformer
computer model
moisture dynamics
648.3.048.1
spellingShingle oil-paper insulation
power transformer
computer model
moisture dynamics
648.3.048.1
Vasilevskij, V. V.
DYNAMICS MODEL OF MOISTURE IN PAPER INSULATION-TRANSFORMER OIL SYSTEM IN NON-STATIONARY THERMAL MODES OF THE POWER TRANSFORMER
topic_facet oil-paper insulation
power transformer
computer model
moisture dynamics
648.3.048.1
бумажно-масляная изоляция
силовой трансформатор
компьютерное моделирование
динамика влажности
648.3.048.1
паперово-масляна ізоляція
потужний трансформатор
комп'ютерне моделювання
динаміка вологості
648.3.048.1
format Article
author Vasilevskij, V. V.
author_facet Vasilevskij, V. V.
author_sort Vasilevskij, V. V.
title DYNAMICS MODEL OF MOISTURE IN PAPER INSULATION-TRANSFORMER OIL SYSTEM IN NON-STATIONARY THERMAL MODES OF THE POWER TRANSFORMER
title_short DYNAMICS MODEL OF MOISTURE IN PAPER INSULATION-TRANSFORMER OIL SYSTEM IN NON-STATIONARY THERMAL MODES OF THE POWER TRANSFORMER
title_full DYNAMICS MODEL OF MOISTURE IN PAPER INSULATION-TRANSFORMER OIL SYSTEM IN NON-STATIONARY THERMAL MODES OF THE POWER TRANSFORMER
title_fullStr DYNAMICS MODEL OF MOISTURE IN PAPER INSULATION-TRANSFORMER OIL SYSTEM IN NON-STATIONARY THERMAL MODES OF THE POWER TRANSFORMER
title_full_unstemmed DYNAMICS MODEL OF MOISTURE IN PAPER INSULATION-TRANSFORMER OIL SYSTEM IN NON-STATIONARY THERMAL MODES OF THE POWER TRANSFORMER
title_sort dynamics model of moisture in paper insulation-transformer oil system in non-stationary thermal modes of the power transformer
title_alt МОДЕЛЬ ДИНАМИКИ ВЛАЖНОСТИ В СИСТЕМЕ «БУМАЖНАЯ ИЗОЛЯЦИЯ» - «ТРАНСФОРМАТОРНОЕ МАСЛО» В НЕСТАЦИОНАРНЫХ ТЕПЛОВЫХ РЕЖИМАХ СИЛОВОГО ТРАНСФОРМАТОРА
МОДЕЛЬ ДИНАМИКИ ВЛАЖНОСТИ В СИСТЕМЕ «БУМАЖНАЯ ИЗОЛЯЦИЯ» - «ТРАНСФОРМАТОРНОЕ МАСЛО» В НЕСТАЦИОНАРНЫХ ТЕПЛОВЫХ РЕЖИМАХ СИЛОВОГО ТРАНСФОРМАТОРА
description Introduction. An important problem in power transformers resource prognosis is the formation of moisture dynamics trends of transformer insulation. Purpose. Increasing the accuracy of power transformer insulation resource assessment based on accounting of moisture dynamics in interrelation with temperature dynamics. Working out of moisture dynamics model in paper insulation-transformer oil system in conjunction with thermodynamic model, load model and technical maintenance model. Methodology. The mathematical models used for describe the moisture dynamics are grounded on nonlinear differential equations. Interrelation moisture dynamics model with thermodynamic, load and technical maintenance models described by UML model. For confirming the adequacy of model used computer simulation. Results. We have implemented the model of moisture dynamics in power transformers insulation in interrelation with other models, which describe the state of power transformer in operation. The proposed model allows us to form detailed trends of moisture dynamics in power transformers insulation basing on monitoring data or power transformers operational factors simulation results. We have performed computer simulation of moisture exchange processes and calculation of transformer insulation resource for different moisture trends. Originality. The offered model takes into account moisture dynamics in power transformers insulation under the influence of changes of the power transformers thermal mode and operational factors. Practical value. The offered model can be used in power transformers monitoring systems for automation of resource assessment of oil-immersed power transformers paper insulation at different phase of lifecycle. Model also can be used for assessment of projected economic efficiency of power transformers exploitation in projected operating conditions.
publisher National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine
publishDate 2016
url http://eie.khpi.edu.ua/article/view/2074-272X.2016.3.02
work_keys_str_mv AT vasilevskijvv dynamicsmodelofmoistureinpaperinsulationtransformeroilsysteminnonstationarythermalmodesofthepowertransformer
AT vasilevskijvv modelʹdinamikivlažnostivsistemebumažnaâizolâciâtransformatornoemaslovnestacionarnyhteplovyhrežimahsilovogotransformatora
first_indexed 2025-07-17T11:46:11Z
last_indexed 2025-07-17T11:46:11Z
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spelling eiekhpieduua-article-715612017-08-21T18:29:44Z DYNAMICS MODEL OF MOISTURE IN PAPER INSULATION-TRANSFORMER OIL SYSTEM IN NON-STATIONARY THERMAL MODES OF THE POWER TRANSFORMER МОДЕЛЬ ДИНАМИКИ ВЛАЖНОСТИ В СИСТЕМЕ «БУМАЖНАЯ ИЗОЛЯЦИЯ» - «ТРАНСФОРМАТОРНОЕ МАСЛО» В НЕСТАЦИОНАРНЫХ ТЕПЛОВЫХ РЕЖИМАХ СИЛОВОГО ТРАНСФОРМАТОРА МОДЕЛЬ ДИНАМИКИ ВЛАЖНОСТИ В СИСТЕМЕ «БУМАЖНАЯ ИЗОЛЯЦИЯ» - «ТРАНСФОРМАТОРНОЕ МАСЛО» В НЕСТАЦИОНАРНЫХ ТЕПЛОВЫХ РЕЖИМАХ СИЛОВОГО ТРАНСФОРМАТОРА Vasilevskij, V. V. oil-paper insulation power transformer computer model moisture dynamics 648.3.048.1 бумажно-масляная изоляция силовой трансформатор компьютерное моделирование динамика влажности 648.3.048.1 паперово-масляна ізоляція потужний трансформатор комп'ютерне моделювання динаміка вологості 648.3.048.1 Introduction. An important problem in power transformers resource prognosis is the formation of moisture dynamics trends of transformer insulation. Purpose. Increasing the accuracy of power transformer insulation resource assessment based on accounting of moisture dynamics in interrelation with temperature dynamics. Working out of moisture dynamics model in paper insulation-transformer oil system in conjunction with thermodynamic model, load model and technical maintenance model. Methodology. The mathematical models used for describe the moisture dynamics are grounded on nonlinear differential equations. Interrelation moisture dynamics model with thermodynamic, load and technical maintenance models described by UML model. For confirming the adequacy of model used computer simulation. Results. We have implemented the model of moisture dynamics in power transformers insulation in interrelation with other models, which describe the state of power transformer in operation. The proposed model allows us to form detailed trends of moisture dynamics in power transformers insulation basing on monitoring data or power transformers operational factors simulation results. We have performed computer simulation of moisture exchange processes and calculation of transformer insulation resource for different moisture trends. Originality. The offered model takes into account moisture dynamics in power transformers insulation under the influence of changes of the power transformers thermal mode and operational factors. Practical value. The offered model can be used in power transformers monitoring systems for automation of resource assessment of oil-immersed power transformers paper insulation at different phase of lifecycle. Model also can be used for assessment of projected economic efficiency of power transformers exploitation in projected operating conditions. С целью повышения точности расчета ресурсных характеристик силового трансформатора предложена модель прогнозирования динамики влажности бумажно-масляной изоляции. Предложенная модель отличается от существующих учетом процессов миграции влаги в бумажно-масляной изоляции под влиянием изменения теплового режима силового трансформатора. Проведено компьютерное моделирование износа бумажно-масляной изоляции и произведена оценка влияния возможного изменения степени увлажненности на ресурс. З метою підвищення точності розрахунку ресурсних характеристик потужного трансформатору запропонована модель динаміки вологості паперово-масляної ізоляції. Запропонована модель відрізняється від вже існуючих врахуванням міграційних процесів вологи в паперово-масляній ізоляції під впливом змінення теплового режиму трансформатор. Виконано комп’ютерне моделювання зносу паперово-масляної ізоляції и зроблена оцінка впливу можливого змінення ступню вологості на ресурс. National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2016-06-24 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2016.3.02 10.20998/2074-272X.2016.3.02 Electrical Engineering & Electromechanics; No. 3 (2016); 17-20 Электротехника и Электромеханика; № 3 (2016); 17-20 Електротехніка і Електромеханіка; № 3 (2016); 17-20 2309-3404 2074-272X en ru http://eie.khpi.edu.ua/article/view/2074-272X.2016.3.02/67613 http://eie.khpi.edu.ua/article/view/2074-272X.2016.3.02/67614 Copyright (c) 2016 V. V. Vasilevskij https://creativecommons.org/licenses/by-nc/4.0

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