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

Zerye Ayalew, Kazuo Kobayashi, Satoshi Matsumoto, Masamichi Kato

研究成果: Conference contribution

18 被引用数 (Scopus)


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.

ホスト出版物のタイトル2018 IEEE Electrical Insulation Conference, EIC 2018
出版社Institute of Electrical and Electronics Engineers Inc.
出版ステータスPublished - 2018 10月 3
イベント2018 IEEE Electrical Insulation Conference, EIC 2018 - San Antonio, United States
継続期間: 2018 6月 172018 6月 20


Other2018 IEEE Electrical Insulation Conference, EIC 2018
国/地域United States
CitySan Antonio

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 電子材料、光学材料、および磁性材料
  • 材料力学
  • 安全性、リスク、信頼性、品質管理


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