Effect of moisture on the thermal conductivity of cellulose and aramid paper impregnated with various dielectric liquids

Grzegorz Dombek; Zbigniew Nadolny; Piotr Przybyłek; Radosław Łopatkiewicz; Agnieszka Marcinkowska; Łukasz Drużyński; Tomasz Boczar; Andrzej Tomczewski

doi:10.3390/en13174433

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Title

Effect of moisture on the thermal conductivity of cellulose and aramid paper impregnated with various dielectric liquids

Authors

Grzegorz Dombek (WIŚiE) ^{[ 1 ][ 2.10 ][ P ]}
Zbigniew Nadolny (WIŚiE) ^{[ 1 ][ 2.10 ][ P ]}
Piotr Przybyłek (WIŚiE) ^{[ 1 ][ 2.10 ][ P ]}
Radosław Łopatkiewicz
Agnieszka Marcinkowska (WTCH) ^{[ 2 ][ 7.6 ][ P ]}
Łukasz Drużyński (WIŚiE) ^{[ 1 ][ 2.10 ][ P ]}
Tomasz Boczar
Andrzej Tomczewski (WARiE) ^{[ 3 ][ 2.2 ][ P ]}

^{[ 1 ]} Instytut Elektroenergetyki, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | ^{[ 2 ]} Instytut Technologii i Inżynierii Chemicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | ^{[ 3 ]} Instytut Elektrotechniki i Elektroniki Przemysłowej, Wydział Automatyki, Robotyki i Elektrotechniki, Politechnika Poznańska | ^{[ P ]} employee

Scientific discipline (Law 2.0)

[2.2] Automation, electronics and electrical engineering
[2.10] Environmental engineering, mining and energy
[7.6] Chemical sciences

Year of publication

2020

Published in

Energies

Journal year: 2020 | Journal volume: vol. 13 | Journal number: no. 17

Article type

scientific article

Publication language

english

Keywords

EN

aramid paper
cellulose
dielectric materials
insulation system
mineral oil
moisture
natural ester
synthetic ester
thermal conductivity
transformers

Abstract

EN This paper presents the effect of the impact of moisture in paper insulation used as insulation of transformer windings on its thermal conductivity. Various types of paper (cellulose and aramid) and impregnated (mineral oil, synthetic ester, and natural ester) were tested. The impact of paper and impregnated types on the changes in thermal conductivity of paper insulation caused by an increase in moisture were analyzed. A linear equation, describing the changes in thermal conductivity due to moisture, for various types of paper and impregnated, was developed. The results of measuring the thermal conductivity of paper insulation depending on the temperature are presented. The aim of the study is to develop an experimental database to better understand the heat transport inside transformers to assess aging and optimize their performance.

Pages (from - to)

4433-1 - 4433-17

DOI

10.3390/en13174433

URL

https://www.mdpi.com/1996-1073/13/17/4433

Comments

Article number: 4433

License type

CC BY (attribution alone)

Open Access Mode

open journal