Investigation on the Accelerated Ageing Behaviour of an Oil-Paper-Insulation Using Different Weight Ratios

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Autoren

  • T. Münster
  • T. Kinkeldey
  • P. Werle
  • K. Hämel
  • J. Preusel
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Details

OriginalspracheEnglisch
Titel des SammelwerksProceedings of the 21st International Symposium on High Voltage Engineering
Herausgeber/-innenBálint Németh
ErscheinungsortCham
Herausgeber (Verlag)Springer Nature
Seiten788-798
Seitenumfang11
Band1
ISBN (elektronisch)978-3-030-31676-1
ISBN (Print)9783030316754
PublikationsstatusVeröffentlicht - 2020
Veranstaltung21st International Symposium on High Voltage Engineering, ISH 2019 - Budapest, Ungarn
Dauer: 26 Aug. 201930 Aug. 2019

Publikationsreihe

NameLecture Notes in Electrical Engineering
Band598 LNEE
ISSN (Print)1876-1100
ISSN (elektronisch)1876-1119

Abstract

This research presents a comparative study of the ageing process of an oil-paper-insulation using Kraft paper. The main goal of this research is the comparison of the ageing behaviour of the insulation with different weight ratios and the influence on pertinent ageing markers, which are used to estimate the remaining lifetime of an oil-paper insulated transformer. Therefore, an investigation has been conducted to measure different parameters of a non-inhibited insulating oil during a long-term thermal stress over 15 weeks at a temperature of 130 ℃ to examine the influence of the ratio on the formation of these markers. The higher temperature compared to the normal operation temperature of a transformer is used to accelerate the thermal ageing of the insulation material in order to simulate the lifetime of a transformer. In addition to the ageing of pure paper and pure insulating oil, the paper-oil weight ratios 1:5, 1:10 and 1:20 will be investigated. The aim is to study how the respective insulating medium ages individually and to determine the ageing behaviour of the insulating materials when used together as a mixed dielectric, as it can be found in real transformers. Therefore, a typically used uninhibited liquid based on mineral oil is used as insulating liquid. Ageing markers such as water content, acidity as well as DGA analyses and other parameters are investigated. Furthermore, the DP-value of the paper samples is also measured. For this, an open system is reproduced, so that a permanent contact with the ambient air is given to simulate a free breathing transformer. The main aim of this study is to investigate the influence of the various weight ratios and how it influences the possibility of indirectly determining the condition of the insulating paper. For this purpose, ageing markers are to be investigated. The obtained results showed that the weight ratio has no influence on the ageing rate of paper but on some ageing markers.

ASJC Scopus Sachgebiete

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Investigation on the Accelerated Ageing Behaviour of an Oil-Paper-Insulation Using Different Weight Ratios. / Münster, T.; Kinkeldey, T.; Werle, P. et al.
Proceedings of the 21st International Symposium on High Voltage Engineering. Hrsg. / Bálint Németh. Band 1 Cham: Springer Nature, 2020. S. 788-798 (Lecture Notes in Electrical Engineering; Band 598 LNEE).

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Münster, T, Kinkeldey, T, Werle, P, Hämel, K & Preusel, J 2020, Investigation on the Accelerated Ageing Behaviour of an Oil-Paper-Insulation Using Different Weight Ratios. in B Németh (Hrsg.), Proceedings of the 21st International Symposium on High Voltage Engineering. Bd. 1, Lecture Notes in Electrical Engineering, Bd. 598 LNEE, Springer Nature, Cham, S. 788-798, 21st International Symposium on High Voltage Engineering, ISH 2019, Budapest, Ungarn, 26 Aug. 2019. https://doi.org/10.1007/978-3-030-31676-1_74
Münster, T., Kinkeldey, T., Werle, P., Hämel, K., & Preusel, J. (2020). Investigation on the Accelerated Ageing Behaviour of an Oil-Paper-Insulation Using Different Weight Ratios. In B. Németh (Hrsg.), Proceedings of the 21st International Symposium on High Voltage Engineering (Band 1, S. 788-798). (Lecture Notes in Electrical Engineering; Band 598 LNEE). Springer Nature. https://doi.org/10.1007/978-3-030-31676-1_74
Münster T, Kinkeldey T, Werle P, Hämel K, Preusel J. Investigation on the Accelerated Ageing Behaviour of an Oil-Paper-Insulation Using Different Weight Ratios. in Németh B, Hrsg., Proceedings of the 21st International Symposium on High Voltage Engineering. Band 1. Cham: Springer Nature. 2020. S. 788-798. (Lecture Notes in Electrical Engineering). Epub 2019 Nov 28. doi: 10.1007/978-3-030-31676-1_74
Münster, T. ; Kinkeldey, T. ; Werle, P. et al. / Investigation on the Accelerated Ageing Behaviour of an Oil-Paper-Insulation Using Different Weight Ratios. Proceedings of the 21st International Symposium on High Voltage Engineering. Hrsg. / Bálint Németh. Band 1 Cham : Springer Nature, 2020. S. 788-798 (Lecture Notes in Electrical Engineering).
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title = "Investigation on the Accelerated Ageing Behaviour of an Oil-Paper-Insulation Using Different Weight Ratios",
abstract = "This research presents a comparative study of the ageing process of an oil-paper-insulation using Kraft paper. The main goal of this research is the comparison of the ageing behaviour of the insulation with different weight ratios and the influence on pertinent ageing markers, which are used to estimate the remaining lifetime of an oil-paper insulated transformer. Therefore, an investigation has been conducted to measure different parameters of a non-inhibited insulating oil during a long-term thermal stress over 15 weeks at a temperature of 130 ℃ to examine the influence of the ratio on the formation of these markers. The higher temperature compared to the normal operation temperature of a transformer is used to accelerate the thermal ageing of the insulation material in order to simulate the lifetime of a transformer. In addition to the ageing of pure paper and pure insulating oil, the paper-oil weight ratios 1:5, 1:10 and 1:20 will be investigated. The aim is to study how the respective insulating medium ages individually and to determine the ageing behaviour of the insulating materials when used together as a mixed dielectric, as it can be found in real transformers. Therefore, a typically used uninhibited liquid based on mineral oil is used as insulating liquid. Ageing markers such as water content, acidity as well as DGA analyses and other parameters are investigated. Furthermore, the DP-value of the paper samples is also measured. For this, an open system is reproduced, so that a permanent contact with the ambient air is given to simulate a free breathing transformer. The main aim of this study is to investigate the influence of the various weight ratios and how it influences the possibility of indirectly determining the condition of the insulating paper. For this purpose, ageing markers are to be investigated. The obtained results showed that the weight ratio has no influence on the ageing rate of paper but on some ageing markers.",
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note = "Funding Information: Acknowledgments. The authors would like to express their gratitude to GRIDINSPECT GmbH and AiF/ZIM for the financial support as well as Weidmann Electrical Technology AG for the support with insulation materials and Analysen Service GmbH for the analysis.; 21st International Symposium on High Voltage Engineering, ISH 2019 ; Conference date: 26-08-2019 Through 30-08-2019",
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Download

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T1 - Investigation on the Accelerated Ageing Behaviour of an Oil-Paper-Insulation Using Different Weight Ratios

AU - Münster, T.

AU - Kinkeldey, T.

AU - Werle, P.

AU - Hämel, K.

AU - Preusel, J.

N1 - Funding Information: Acknowledgments. The authors would like to express their gratitude to GRIDINSPECT GmbH and AiF/ZIM for the financial support as well as Weidmann Electrical Technology AG for the support with insulation materials and Analysen Service GmbH for the analysis.

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N2 - This research presents a comparative study of the ageing process of an oil-paper-insulation using Kraft paper. The main goal of this research is the comparison of the ageing behaviour of the insulation with different weight ratios and the influence on pertinent ageing markers, which are used to estimate the remaining lifetime of an oil-paper insulated transformer. Therefore, an investigation has been conducted to measure different parameters of a non-inhibited insulating oil during a long-term thermal stress over 15 weeks at a temperature of 130 ℃ to examine the influence of the ratio on the formation of these markers. The higher temperature compared to the normal operation temperature of a transformer is used to accelerate the thermal ageing of the insulation material in order to simulate the lifetime of a transformer. In addition to the ageing of pure paper and pure insulating oil, the paper-oil weight ratios 1:5, 1:10 and 1:20 will be investigated. The aim is to study how the respective insulating medium ages individually and to determine the ageing behaviour of the insulating materials when used together as a mixed dielectric, as it can be found in real transformers. Therefore, a typically used uninhibited liquid based on mineral oil is used as insulating liquid. Ageing markers such as water content, acidity as well as DGA analyses and other parameters are investigated. Furthermore, the DP-value of the paper samples is also measured. For this, an open system is reproduced, so that a permanent contact with the ambient air is given to simulate a free breathing transformer. The main aim of this study is to investigate the influence of the various weight ratios and how it influences the possibility of indirectly determining the condition of the insulating paper. For this purpose, ageing markers are to be investigated. The obtained results showed that the weight ratio has no influence on the ageing rate of paper but on some ageing markers.

AB - This research presents a comparative study of the ageing process of an oil-paper-insulation using Kraft paper. The main goal of this research is the comparison of the ageing behaviour of the insulation with different weight ratios and the influence on pertinent ageing markers, which are used to estimate the remaining lifetime of an oil-paper insulated transformer. Therefore, an investigation has been conducted to measure different parameters of a non-inhibited insulating oil during a long-term thermal stress over 15 weeks at a temperature of 130 ℃ to examine the influence of the ratio on the formation of these markers. The higher temperature compared to the normal operation temperature of a transformer is used to accelerate the thermal ageing of the insulation material in order to simulate the lifetime of a transformer. In addition to the ageing of pure paper and pure insulating oil, the paper-oil weight ratios 1:5, 1:10 and 1:20 will be investigated. The aim is to study how the respective insulating medium ages individually and to determine the ageing behaviour of the insulating materials when used together as a mixed dielectric, as it can be found in real transformers. Therefore, a typically used uninhibited liquid based on mineral oil is used as insulating liquid. Ageing markers such as water content, acidity as well as DGA analyses and other parameters are investigated. Furthermore, the DP-value of the paper samples is also measured. For this, an open system is reproduced, so that a permanent contact with the ambient air is given to simulate a free breathing transformer. The main aim of this study is to investigate the influence of the various weight ratios and how it influences the possibility of indirectly determining the condition of the insulating paper. For this purpose, ageing markers are to be investigated. The obtained results showed that the weight ratio has no influence on the ageing rate of paper but on some ageing markers.

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KW - Degree of polymerization

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KW - Ratio

KW - Temperature

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