Details
| Original language | English |
|---|---|
| Title of host publication | 22nd International Symposium on High Voltage Engineering (ISH 2021) |
| Publisher | IEEE Computer Society |
| Pages | 145-149 |
| Number of pages | 5 |
| Volume | 2021 |
| Edition | 15 |
| ISBN (electronic) | 978-1-83953-605-2 |
| Publication status | Published - 2021 |
Publication series
| Name | 22nd International Symposium on High Voltage Engineering (ISH 2021) |
|---|---|
| Publisher | The Institution of Engineering and Technology |
Abstract
Transformers are key elements in power generation and distribution. A large part of the world's transformer fleet is older than its intended service life. The risk of transformer failure increases with age, with the oil-paper insulation of the windings being a major cause of transformer failures. It is mainly the large expensive power transformers that have oil-paper insulation. During the service life of a transformer, its paper-oil insulation is exposed to mechanical and thermal stresses that initiate the aging and degradation process of the insulation. In the course of degradation, both high- and low-molecular weight acids (HMA and LMA) are formed. These acids change the physicochemical properties of the insulating oil and in turn, cause the paper to decay. The LMAs in particular are known to be responsible for paper aging, as they initiate chain scission of cellulose molecules and remain in the paper. In this article spectroscopic examinations of low-molecular weight acids, laboratory-aged paper samples, and unaged acid-injected paper samples are conducted, to determine whether different concentrations of acids in paper samples can be detected using IR-spectroscopy.
Keywords
- ACID, CONDITION ASSESSMENT, PAPER-OIL INSULATION, POTENTIOMETRIC TITRATION, SPECTROSCOPY
ASJC Scopus subject areas
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22nd International Symposium on High Voltage Engineering (ISH 2021). Vol. 2021 15. ed. IEEE Computer Society, 2021. p. 145-149 ( 22nd International Symposium on High Voltage Engineering (ISH 2021)).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Investigations on detectability of different acids in paper-oil insulation
AU - Özdemir, Büsra
AU - Münster, Tobias
AU - Werle, Peter
AU - Hämel, Kai
AU - Preusel, Jörg
PY - 2021
Y1 - 2021
N2 - Transformers are key elements in power generation and distribution. A large part of the world's transformer fleet is older than its intended service life. The risk of transformer failure increases with age, with the oil-paper insulation of the windings being a major cause of transformer failures. It is mainly the large expensive power transformers that have oil-paper insulation. During the service life of a transformer, its paper-oil insulation is exposed to mechanical and thermal stresses that initiate the aging and degradation process of the insulation. In the course of degradation, both high- and low-molecular weight acids (HMA and LMA) are formed. These acids change the physicochemical properties of the insulating oil and in turn, cause the paper to decay. The LMAs in particular are known to be responsible for paper aging, as they initiate chain scission of cellulose molecules and remain in the paper. In this article spectroscopic examinations of low-molecular weight acids, laboratory-aged paper samples, and unaged acid-injected paper samples are conducted, to determine whether different concentrations of acids in paper samples can be detected using IR-spectroscopy.
AB - Transformers are key elements in power generation and distribution. A large part of the world's transformer fleet is older than its intended service life. The risk of transformer failure increases with age, with the oil-paper insulation of the windings being a major cause of transformer failures. It is mainly the large expensive power transformers that have oil-paper insulation. During the service life of a transformer, its paper-oil insulation is exposed to mechanical and thermal stresses that initiate the aging and degradation process of the insulation. In the course of degradation, both high- and low-molecular weight acids (HMA and LMA) are formed. These acids change the physicochemical properties of the insulating oil and in turn, cause the paper to decay. The LMAs in particular are known to be responsible for paper aging, as they initiate chain scission of cellulose molecules and remain in the paper. In this article spectroscopic examinations of low-molecular weight acids, laboratory-aged paper samples, and unaged acid-injected paper samples are conducted, to determine whether different concentrations of acids in paper samples can be detected using IR-spectroscopy.
KW - ACID
KW - CONDITION ASSESSMENT
KW - PAPER-OIL INSULATION
KW - POTENTIOMETRIC TITRATION
KW - SPECTROSCOPY
UR - http://www.scopus.com/inward/record.url?scp=85149175713&partnerID=8YFLogxK
U2 - 10.1049/icp.2022.0217
DO - 10.1049/icp.2022.0217
M3 - Conference contribution
VL - 2021
T3 - 22nd International Symposium on High Voltage Engineering (ISH 2021)
SP - 145
EP - 149
BT - 22nd International Symposium on High Voltage Engineering (ISH 2021)
PB - IEEE Computer Society
ER -