FTIR-spectroscopic and electrical analysis of thermally stressed liquid dielectrics

G.M. Smith; A.S. Holmes-Smith; S.G. McMeekin

doi:10.1109/ICDL.2019.8796785

FTIR-spectroscopic and electrical analysis of thermally stressed liquid dielectrics

G.M. Smith, A.S. Holmes-Smith, S.G. McMeekin

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (Scopus)

Abstract

To determine the reliability of furan compound analysis for insulation-system health prediction, the furan level found in oil, paper and pressboard was monitored throughout a large-scale ageing study. Therefore, thermally upgraded and normal Kraft paper as well as transformer pressboard were immersed in 4 different types of insulation liquid (mineral oil, G-t-L oil, synthetic and natural ester) at 3 different ageing temperatures (110, 130 and 150\mathrmC) and studied throughout a 56 day ageing setup, resulting in 100 mixed samples and 300 furan analyses. While the evolution of furan compounds in each system was somehow steady, comparisons between different material mixes and temperatures show significant aberrations. For similar stages of wear, standard deviations of 100% and more are detectable for the total furan compound concentration in oil, while deviations in solid insulation materials can be even higher. Due to the complexity and high number of variables, irregular analysis intervals without supporting information seem to be highly arguable for transformer health prediction.

Original language	English
Title of host publication	2019 IEEE 20th International Conference on Dielectric Liquids (ICDL)
Publisher	IEEE
ISBN (Electronic)	9781728117188
ISBN (Print)	9781728117195
DOIs	https://doi.org/10.1109/ICDL.2019.8796785
Publication status	Published - 15 Aug 2019
Event	IEEE 20th International Conference on Dielectric Liquids - Roma, Italy Duration: 23 Jun 2019 → 27 Jun 2019 https://www.icdl2019.org/ (Link to conference website)

Publication series

Name	Proceedings of IEEE International Conference on Dielectric Liquids
Publisher	IEEE
ISSN (Print)	2153-3725
ISSN (Electronic)	2153-3733

Conference

Conference	IEEE 20th International Conference on Dielectric Liquids
Abbreviated title	IEEE ICDL 2019
Country/Territory	Italy
City	Roma
Period	23/06/19 → 27/06/19
Internet address	https://www.icdl2019.org/ (Link to conference website)

Keywords

dielectric liquids , electric breakdown , Fourier transform spectra , infrared spectra , minerals , paper , power transformer insulation , thermal stresses , transformer oil
Accelerated thermal ageing
Furan compounds
2FAL
Degree of polymerization
Furan analysis

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrochemistry

Documents and Links

10.1109/ICDL.2019.8796785

Cite this

@inproceedings{90f0762386b04a48ae60ff6284398da7,

title = "FTIR-spectroscopic and electrical analysis of thermally stressed liquid dielectrics",

abstract = "To determine the reliability of furan compound analysis for insulation-system health prediction, the furan level found in oil, paper and pressboard was monitored throughout a large-scale ageing study. Therefore, thermally upgraded and normal Kraft paper as well as transformer pressboard were immersed in 4 different types of insulation liquid (mineral oil, G-t-L oil, synthetic and natural ester) at 3 different ageing temperatures (110, 130 and 150\mathrmC) and studied throughout a 56 day ageing setup, resulting in 100 mixed samples and 300 furan analyses. While the evolution of furan compounds in each system was somehow steady, comparisons between different material mixes and temperatures show significant aberrations. For similar stages of wear, standard deviations of 100% and more are detectable for the total furan compound concentration in oil, while deviations in solid insulation materials can be even higher. Due to the complexity and high number of variables, irregular analysis intervals without supporting information seem to be highly arguable for transformer health prediction.",

keywords = "dielectric liquids , electric breakdown , Fourier transform spectra , infrared spectra , minerals , paper , power transformer insulation , thermal stresses , transformer oil, Accelerated thermal ageing, Furan compounds, 2FAL, Degree of polymerization, Furan analysis",

author = "G.M. Smith and A.S. Holmes-Smith and S.G. McMeekin",

note = "Acceptance and AAM requested. ST 29/04/21; IEEE 20th International Conference on Dielectric Liquids, IEEE ICDL 2019 ; Conference date: 23-06-2019 Through 27-06-2019",

year = "2019",

month = aug,

day = "15",

doi = "10.1109/ICDL.2019.8796785",

language = "English",

isbn = "9781728117195",

series = "Proceedings of IEEE International Conference on Dielectric Liquids",

publisher = "IEEE",

booktitle = "2019 IEEE 20th International Conference on Dielectric Liquids (ICDL)",

address = "United States",

url = "https://www.icdl2019.org/",

}

Smith, GM, Holmes-Smith, AS & McMeekin, SG 2019, FTIR-spectroscopic and electrical analysis of thermally stressed liquid dielectrics. in 2019 IEEE 20th International Conference on Dielectric Liquids (ICDL). Proceedings of IEEE International Conference on Dielectric Liquids, IEEE, IEEE 20th International Conference on Dielectric Liquids, Roma, Italy, 23/06/19. https://doi.org/10.1109/ICDL.2019.8796785

FTIR-spectroscopic and electrical analysis of thermally stressed liquid dielectrics. / Smith, G.M.; Holmes-Smith, A.S.; McMeekin, S.G.
2019 IEEE 20th International Conference on Dielectric Liquids (ICDL). IEEE, 2019. (Proceedings of IEEE International Conference on Dielectric Liquids).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - FTIR-spectroscopic and electrical analysis of thermally stressed liquid dielectrics

AU - Smith, G.M.

AU - Holmes-Smith, A.S.

AU - McMeekin, S.G.

N1 - Acceptance and AAM requested. ST 29/04/21

PY - 2019/8/15

Y1 - 2019/8/15

N2 - To determine the reliability of furan compound analysis for insulation-system health prediction, the furan level found in oil, paper and pressboard was monitored throughout a large-scale ageing study. Therefore, thermally upgraded and normal Kraft paper as well as transformer pressboard were immersed in 4 different types of insulation liquid (mineral oil, G-t-L oil, synthetic and natural ester) at 3 different ageing temperatures (110, 130 and 150\mathrmC) and studied throughout a 56 day ageing setup, resulting in 100 mixed samples and 300 furan analyses. While the evolution of furan compounds in each system was somehow steady, comparisons between different material mixes and temperatures show significant aberrations. For similar stages of wear, standard deviations of 100% and more are detectable for the total furan compound concentration in oil, while deviations in solid insulation materials can be even higher. Due to the complexity and high number of variables, irregular analysis intervals without supporting information seem to be highly arguable for transformer health prediction.

AB - To determine the reliability of furan compound analysis for insulation-system health prediction, the furan level found in oil, paper and pressboard was monitored throughout a large-scale ageing study. Therefore, thermally upgraded and normal Kraft paper as well as transformer pressboard were immersed in 4 different types of insulation liquid (mineral oil, G-t-L oil, synthetic and natural ester) at 3 different ageing temperatures (110, 130 and 150\mathrmC) and studied throughout a 56 day ageing setup, resulting in 100 mixed samples and 300 furan analyses. While the evolution of furan compounds in each system was somehow steady, comparisons between different material mixes and temperatures show significant aberrations. For similar stages of wear, standard deviations of 100% and more are detectable for the total furan compound concentration in oil, while deviations in solid insulation materials can be even higher. Due to the complexity and high number of variables, irregular analysis intervals without supporting information seem to be highly arguable for transformer health prediction.

KW - dielectric liquids , electric breakdown , Fourier transform spectra , infrared spectra , minerals , paper , power transformer insulation , thermal stresses , transformer oil

KW - Accelerated thermal ageing

KW - Furan compounds

KW - 2FAL

KW - Degree of polymerization

KW - Furan analysis

U2 - 10.1109/ICDL.2019.8796785

DO - 10.1109/ICDL.2019.8796785

M3 - Conference contribution

SN - 9781728117195

T3 - Proceedings of IEEE International Conference on Dielectric Liquids

BT - 2019 IEEE 20th International Conference on Dielectric Liquids (ICDL)

PB - IEEE

T2 - IEEE 20th International Conference on Dielectric Liquids

Y2 - 23 June 2019 through 27 June 2019

ER -

FTIR-spectroscopic and electrical analysis of thermally stressed liquid dielectrics

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Documents and Links

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Cite this