Study of molecular behavior in oxidation of insulating oil using terahertz spectroscopy

Nobuaki Nishimura, Ryuichi Ogura, Satoshi Matsumoto, Maya Mizuno, Kaori Fukunaga

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The stock of aged power equipment is increasing and it is important to clarify the characteristics of deteriorated insulating oil. This paper describes a basic study of molecular behavior in the oxidation of insulating oil by terahertz spectroscopy. The oxidation of insulating oil was modeled by using various compositions of dodecane and 2-octanol. The terahertz measurements indicated that signifi cant absorption related to hydroxyl groups (-OH) occurred between 6 and 7 THz. The absorption band was also observed in accelerated aging alkylbenzene, which is used in power equipment as insulating oil and is sensitive to hydrogen bonds.

Original languageEnglish
Pages (from-to)9-15
Number of pages7
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Issue number1
Publication statusPublished - 2013 Apr 15


  • absorption characteristics
  • hydrogen bond
  • insulating oil
  • molecular behavior
  • oxidation
  • terahertz

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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