Dissolved Gas Analysis (DGA) of Arc Discharge Fault in Transformer Insulation Oils (Ester and Mineral Oils)

Zerye Ayalew; Kazuo Kobayashi; Satoshi Matsumoto; Masamichi Kato

doi:10.1109/EIC.2018.8481123

Dissolved Gas Analysis (DGA) of Arc Discharge Fault in Transformer Insulation Oils (Ester and Mineral Oils)

Zerye Ayalew, Kazuo Kobayashi, Satoshi Matsumoto, Masamichi Kato

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

18 Citations (Scopus)

Abstract

Transformer insulation oil is an important liquid for insulating and cooling of transformers. For many years' mineral oil has been used for as an insulating liquid in high voltage transformer. Mineral oil has good dielectric properties, however, due to environmental problem; recently many researchers have been looking for an alternative insulating liquid. Biodegradable and environmentally friendly ester oils have attracted more attention in recent years. This paper presents the experimental results of electrical arc stress on dissolved gases of transformer insulating oils (PFAE, MIDEL 7131 and mineral oil). The generated dissolved gases in the sample oils were examined by dissolved gas analysis (DGA) techniques. The test device used for testing is acrylic tube with a high voltage copper electrode at the top and a ground aluminum electrode at the bottom immersed in the oil. The experimental results from dissolved gas analysis (DGA) indicated that arc fault produce large amounts of hydrogen (H₂) and acetylene (C2H2) with small quantities of methane (CH4), ethylene (C2H4) and ethane (C2H6) for both oils. Acetylene (C2H2) gas is the highest combustible gas generated by arc discharge in both mineral and ester oils. Therefore, there is a possibility that the diagnosis of a transformer filled with ester oil can be done using dissolved gas analysis (DGA) method.

Original language	English
Title of host publication	2018 IEEE Electrical Insulation Conference, EIC 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	150-153
Number of pages	4
ISBN (Electronic)	9781538641781
DOIs	https://doi.org/10.1109/EIC.2018.8481123
Publication status	Published - 2018 Oct 3
Event	2018 IEEE Electrical Insulation Conference, EIC 2018 - San Antonio, United States Duration: 2018 Jun 17 → 2018 Jun 20

Other

Other	2018 IEEE Electrical Insulation Conference, EIC 2018
Country/Territory	United States
City	San Antonio
Period	18/6/17 → 18/6/20

Keywords

Arc discharge
Dissolved gas analysis
Ester oils
Mineral oil

ASJC Scopus subject areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Mechanics of Materials
Safety, Risk, Reliability and Quality

Access to Document

10.1109/EIC.2018.8481123

Cite this

Dissolved Gas Analysis (DGA) of Arc Discharge Fault in Transformer Insulation Oils (Ester and Mineral Oils). / Ayalew, Zerye; Kobayashi, Kazuo; Matsumoto, Satoshi et al.

2018 IEEE Electrical Insulation Conference, EIC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 150-153 8481123.

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

Ayalew, Z, Kobayashi, K, Matsumoto, S & Kato, M 2018, Dissolved Gas Analysis (DGA) of Arc Discharge Fault in Transformer Insulation Oils (Ester and Mineral Oils). in 2018 IEEE Electrical Insulation Conference, EIC 2018., 8481123, Institute of Electrical and Electronics Engineers Inc., pp. 150-153, 2018 IEEE Electrical Insulation Conference, EIC 2018, San Antonio, United States, 18/6/17. https://doi.org/10.1109/EIC.2018.8481123

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abstract = "Transformer insulation oil is an important liquid for insulating and cooling of transformers. For many years' mineral oil has been used for as an insulating liquid in high voltage transformer. Mineral oil has good dielectric properties, however, due to environmental problem; recently many researchers have been looking for an alternative insulating liquid. Biodegradable and environmentally friendly ester oils have attracted more attention in recent years. This paper presents the experimental results of electrical arc stress on dissolved gases of transformer insulating oils (PFAE, MIDEL 7131 and mineral oil). The generated dissolved gases in the sample oils were examined by dissolved gas analysis (DGA) techniques. The test device used for testing is acrylic tube with a high voltage copper electrode at the top and a ground aluminum electrode at the bottom immersed in the oil. The experimental results from dissolved gas analysis (DGA) indicated that arc fault produce large amounts of hydrogen (H2) and acetylene (C2H2) with small quantities of methane (CH4), ethylene (C2H4) and ethane (C2H6) for both oils. Acetylene (C2H2) gas is the highest combustible gas generated by arc discharge in both mineral and ester oils. Therefore, there is a possibility that the diagnosis of a transformer filled with ester oil can be done using dissolved gas analysis (DGA) method.",

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AB - Transformer insulation oil is an important liquid for insulating and cooling of transformers. For many years' mineral oil has been used for as an insulating liquid in high voltage transformer. Mineral oil has good dielectric properties, however, due to environmental problem; recently many researchers have been looking for an alternative insulating liquid. Biodegradable and environmentally friendly ester oils have attracted more attention in recent years. This paper presents the experimental results of electrical arc stress on dissolved gases of transformer insulating oils (PFAE, MIDEL 7131 and mineral oil). The generated dissolved gases in the sample oils were examined by dissolved gas analysis (DGA) techniques. The test device used for testing is acrylic tube with a high voltage copper electrode at the top and a ground aluminum electrode at the bottom immersed in the oil. The experimental results from dissolved gas analysis (DGA) indicated that arc fault produce large amounts of hydrogen (H2) and acetylene (C2H2) with small quantities of methane (CH4), ethylene (C2H4) and ethane (C2H6) for both oils. Acetylene (C2H2) gas is the highest combustible gas generated by arc discharge in both mineral and ester oils. Therefore, there is a possibility that the diagnosis of a transformer filled with ester oil can be done using dissolved gas analysis (DGA) method.

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Dissolved Gas Analysis (DGA) of Arc Discharge Fault in Transformer Insulation Oils (Ester and Mineral Oils)

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