Quantum Chemistry Computing to analyze the Gas Generation Mechanism in Ester Insulating Oils

Masamichi Kato, Satoshi Matsumoto

研究成果: Conference contribution

抄録

The thermal decomposition mechanism of ester insulating oil was investigated using quantum chemistry computing. The bond dissociation energy of each ester's molecular bond was calculated, activate energy for generation radicals estimated. Gibbs free energy difference before and after bond dissociation was calculated at 300, 400, 500, 600, and 700°C. The reaction rate at each temperature was evaluated, and the ratio of each radical was estimated. Furthermore, the reaction pathway in which radicals generate gases (H2, CH4, C2H6, C2H4, C2H2) used in DGA was searched by transition state (TS) search and intrinsic reaction coordinate (IRC) analyzing. Finally, the Gibbs free energy for these reaction pathways was calculated and the gas generation rate at each temperature was estimated. Calculated gas generation characteristic trends are consistent with the data of local heating experiments previously reported.

本文言語English
ホスト出版物のタイトル2020 IEEE Electrical Insulation Conference, EIC 2020
出版社Institute of Electrical and Electronics Engineers Inc.
ページ157-162
ページ数6
ISBN(電子版)9781728154855
DOI
出版ステータスPublished - 2020 6
イベント2020 IEEE Electrical Insulation Conference, EIC 2020 - Knoxville, United States
継続期間: 2020 6 222020 7 3

出版物シリーズ

名前2020 IEEE Electrical Insulation Conference, EIC 2020

Conference

Conference2020 IEEE Electrical Insulation Conference, EIC 2020
CountryUnited States
CityKnoxville
Period20/6/2220/7/3

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Electronic, Optical and Magnetic Materials

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