Modified Dissolved Gas Analysis with Additional Detection of Higher Hydrocarbons for Transformer Faults Diagnosis

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OriginalspracheEnglisch
Titel des Sammelwerks2022 IEEE 21st International Conference on Dielectric Liquids, ICDL 2022
Herausgeber (Verlag)IEEE Computer Society
ISBN (elektronisch)9781665484916
PublikationsstatusVeröffentlicht - 2022
Veranstaltung21st IEEE International Conference on Dielectric Liquids, ICDL 2022 - Sevilla, Spanien
Dauer: 29 Mai 20222 Juni 2022

Publikationsreihe

NameProceedings - IEEE International Conference on Dielectric Liquids
Band2022-May
ISSN (Print)2153-3725
ISSN (elektronisch)2153-3733

Abstract

Dissolved gas analysis (DGA) is one of the well-established monitoring system for estimation of the transformer insulation condition. Commonly, the conventional fault gases C1 to C3 hydrocarbons as well as oxygen, nitrogen, hydrogen and carbon dioxide and monoxide are measured. The concentrations of the fault gases as well as the ratios among them are used in a number of DGA interpretations for fault diagnosis. However, most DGA interpretations are based on the well-known mineral oils. Currently, more and more alternative insulation liquids have been used in transformers. These alternative insulation liquids possess a different chemical structure compared to mineral oil, so that other aging reactions occur. For a more precise classification of the fault types, higher C3, C4 and C5 hydrocarbons could also be considered as new fault gases in addition to the conventional fault gases. The great advantage of higher hydrocarbons is their very high solubility in the insulation liquid, so that their volatilization is minimized. Other fault gases such as hydrogen and methane can volatilize easily into the liquid due to their low gas solubility. This complicates the DGA interpretation. In this study, three different types of insulation liquids were investigated for their gas formation behavior of higher-value hydrocarbons under different transformer faults as new suitable indicators for DGA interpretation. For this purpose, a modified DGA measurement system was developed and built, which allows the detection of higher-value hydrocarbons in addition to the conventional fault gases in different types of insulating liquids. Initial tests showed the general generation of higher C4 and C5 hydrocarbons as well as further C3 hydrocarbons depending on the transformer fault type. Two transformer fault types were reproduced in the laboratory, thermal and electrical faults. Large differences were apparent, when comparing the gas behavior of mineral oils to alternative insulation liquids. Furthermore, different fault gases were formed in the two fault types and correlations between temperature and energy for generation of the higher valence hydrocarbons were also obvious.

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Modified Dissolved Gas Analysis with Additional Detection of Higher Hydrocarbons for Transformer Faults Diagnosis. / Homeier, Kristin; Werle, Peter; Hahn, Michael et al.
2022 IEEE 21st International Conference on Dielectric Liquids, ICDL 2022. IEEE Computer Society, 2022. (Proceedings - IEEE International Conference on Dielectric Liquids; Band 2022-May).

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

Homeier, K, Werle, P, Hahn, M & Wilke, D 2022, Modified Dissolved Gas Analysis with Additional Detection of Higher Hydrocarbons for Transformer Faults Diagnosis. in 2022 IEEE 21st International Conference on Dielectric Liquids, ICDL 2022. Proceedings - IEEE International Conference on Dielectric Liquids, Bd. 2022-May, IEEE Computer Society, 21st IEEE International Conference on Dielectric Liquids, ICDL 2022, Sevilla, Spanien, 29 Mai 2022. https://doi.org/10.1109/ICDL49583.2022.9830962
Homeier, K., Werle, P., Hahn, M., & Wilke, D. (2022). Modified Dissolved Gas Analysis with Additional Detection of Higher Hydrocarbons for Transformer Faults Diagnosis. In 2022 IEEE 21st International Conference on Dielectric Liquids, ICDL 2022 (Proceedings - IEEE International Conference on Dielectric Liquids; Band 2022-May). IEEE Computer Society. https://doi.org/10.1109/ICDL49583.2022.9830962
Homeier K, Werle P, Hahn M, Wilke D. Modified Dissolved Gas Analysis with Additional Detection of Higher Hydrocarbons for Transformer Faults Diagnosis. in 2022 IEEE 21st International Conference on Dielectric Liquids, ICDL 2022. IEEE Computer Society. 2022. (Proceedings - IEEE International Conference on Dielectric Liquids). doi: 10.1109/ICDL49583.2022.9830962
Homeier, Kristin ; Werle, Peter ; Hahn, Michael et al. / Modified Dissolved Gas Analysis with Additional Detection of Higher Hydrocarbons for Transformer Faults Diagnosis. 2022 IEEE 21st International Conference on Dielectric Liquids, ICDL 2022. IEEE Computer Society, 2022. (Proceedings - IEEE International Conference on Dielectric Liquids).
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abstract = "Dissolved gas analysis (DGA) is one of the well-established monitoring system for estimation of the transformer insulation condition. Commonly, the conventional fault gases C1 to C3 hydrocarbons as well as oxygen, nitrogen, hydrogen and carbon dioxide and monoxide are measured. The concentrations of the fault gases as well as the ratios among them are used in a number of DGA interpretations for fault diagnosis. However, most DGA interpretations are based on the well-known mineral oils. Currently, more and more alternative insulation liquids have been used in transformers. These alternative insulation liquids possess a different chemical structure compared to mineral oil, so that other aging reactions occur. For a more precise classification of the fault types, higher C3, C4 and C5 hydrocarbons could also be considered as new fault gases in addition to the conventional fault gases. The great advantage of higher hydrocarbons is their very high solubility in the insulation liquid, so that their volatilization is minimized. Other fault gases such as hydrogen and methane can volatilize easily into the liquid due to their low gas solubility. This complicates the DGA interpretation. In this study, three different types of insulation liquids were investigated for their gas formation behavior of higher-value hydrocarbons under different transformer faults as new suitable indicators for DGA interpretation. For this purpose, a modified DGA measurement system was developed and built, which allows the detection of higher-value hydrocarbons in addition to the conventional fault gases in different types of insulating liquids. Initial tests showed the general generation of higher C4 and C5 hydrocarbons as well as further C3 hydrocarbons depending on the transformer fault type. Two transformer fault types were reproduced in the laboratory, thermal and electrical faults. Large differences were apparent, when comparing the gas behavior of mineral oils to alternative insulation liquids. Furthermore, different fault gases were formed in the two fault types and correlations between temperature and energy for generation of the higher valence hydrocarbons were also obvious.",
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T1 - Modified Dissolved Gas Analysis with Additional Detection of Higher Hydrocarbons for Transformer Faults Diagnosis

AU - Homeier, Kristin

AU - Werle, Peter

AU - Hahn, Michael

AU - Wilke, Dorit

PY - 2022

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N2 - Dissolved gas analysis (DGA) is one of the well-established monitoring system for estimation of the transformer insulation condition. Commonly, the conventional fault gases C1 to C3 hydrocarbons as well as oxygen, nitrogen, hydrogen and carbon dioxide and monoxide are measured. The concentrations of the fault gases as well as the ratios among them are used in a number of DGA interpretations for fault diagnosis. However, most DGA interpretations are based on the well-known mineral oils. Currently, more and more alternative insulation liquids have been used in transformers. These alternative insulation liquids possess a different chemical structure compared to mineral oil, so that other aging reactions occur. For a more precise classification of the fault types, higher C3, C4 and C5 hydrocarbons could also be considered as new fault gases in addition to the conventional fault gases. The great advantage of higher hydrocarbons is their very high solubility in the insulation liquid, so that their volatilization is minimized. Other fault gases such as hydrogen and methane can volatilize easily into the liquid due to their low gas solubility. This complicates the DGA interpretation. In this study, three different types of insulation liquids were investigated for their gas formation behavior of higher-value hydrocarbons under different transformer faults as new suitable indicators for DGA interpretation. For this purpose, a modified DGA measurement system was developed and built, which allows the detection of higher-value hydrocarbons in addition to the conventional fault gases in different types of insulating liquids. Initial tests showed the general generation of higher C4 and C5 hydrocarbons as well as further C3 hydrocarbons depending on the transformer fault type. Two transformer fault types were reproduced in the laboratory, thermal and electrical faults. Large differences were apparent, when comparing the gas behavior of mineral oils to alternative insulation liquids. Furthermore, different fault gases were formed in the two fault types and correlations between temperature and energy for generation of the higher valence hydrocarbons were also obvious.

AB - Dissolved gas analysis (DGA) is one of the well-established monitoring system for estimation of the transformer insulation condition. Commonly, the conventional fault gases C1 to C3 hydrocarbons as well as oxygen, nitrogen, hydrogen and carbon dioxide and monoxide are measured. The concentrations of the fault gases as well as the ratios among them are used in a number of DGA interpretations for fault diagnosis. However, most DGA interpretations are based on the well-known mineral oils. Currently, more and more alternative insulation liquids have been used in transformers. These alternative insulation liquids possess a different chemical structure compared to mineral oil, so that other aging reactions occur. For a more precise classification of the fault types, higher C3, C4 and C5 hydrocarbons could also be considered as new fault gases in addition to the conventional fault gases. The great advantage of higher hydrocarbons is their very high solubility in the insulation liquid, so that their volatilization is minimized. Other fault gases such as hydrogen and methane can volatilize easily into the liquid due to their low gas solubility. This complicates the DGA interpretation. In this study, three different types of insulation liquids were investigated for their gas formation behavior of higher-value hydrocarbons under different transformer faults as new suitable indicators for DGA interpretation. For this purpose, a modified DGA measurement system was developed and built, which allows the detection of higher-value hydrocarbons in addition to the conventional fault gases in different types of insulating liquids. Initial tests showed the general generation of higher C4 and C5 hydrocarbons as well as further C3 hydrocarbons depending on the transformer fault type. Two transformer fault types were reproduced in the laboratory, thermal and electrical faults. Large differences were apparent, when comparing the gas behavior of mineral oils to alternative insulation liquids. Furthermore, different fault gases were formed in the two fault types and correlations between temperature and energy for generation of the higher valence hydrocarbons were also obvious.

KW - aging products

KW - DGA

KW - ester

KW - fault gases

KW - higher-value hydrocarbons

KW - mineral oil

KW - transformer faults

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U2 - 10.1109/ICDL49583.2022.9830962

DO - 10.1109/ICDL49583.2022.9830962

M3 - Conference contribution

AN - SCOPUS:85135820699

T3 - Proceedings - IEEE International Conference on Dielectric Liquids

BT - 2022 IEEE 21st International Conference on Dielectric Liquids, ICDL 2022

PB - IEEE Computer Society

T2 - 21st IEEE International Conference on Dielectric Liquids, ICDL 2022

Y2 - 29 May 2022 through 2 June 2022

ER -

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