Transmittance spectra of oxidized insulation oil using terahertz spectroscopy

Author

Nishimura, Nobuaki ; Ogura, Ryuich ; Matsumoto, Satoshi ; Mizuno, Maya ; Fukunaga, Kaori

Author_Institution

Dept. of Electr. Eng., Shibaura Inst. of Technol., Tokyo, Japan

fYear

2011

fDate

26-30 June 2011

Firstpage

1

Lastpage

4

Abstract

The number of aged power equipment increases and it is important to clarify the characteristics of deteriorated insulating oil. This paper describes the basic study on transmittance spectra of oxidized insulating oils by terahertz spectroscopy. First, the mineral and mixture insulating oils heated in oxygen were measured and observed spectra change. Second, the oxidation process of insulating oil was modeled by using various compositions of dodecane and 2-octanol. The absorption related to hydroxyl groups (-OH) was significantly observed between 6 and 7 THz. And hydrogen bonds were observed from vibration change of OH. The absorption band was also observed in accelerated aging insulating oils used in power equipments as insulating oil.

Keywords

insulating oils; oxidation; terahertz spectroscopy; 2-octanol; OH; absorption band; accelerated aging insulating oil; aged power equipment; dodecane; frequency 6 THz; frequency 7 PHz; hydrogen bond; hydroxyl group; insulating oil oxidation process; mineral insulating oil; mixture insulating oil; oxidized insulation oil transmittance spectra; oxygen; terahertz spectroscopy; Absorption; Heating; Minerals; Oils; Oxidation; Spectroscopy; Vibrations; acceralated aging test; insulating oil; mineral oil; molecular behavior; terahertz spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids (ICDL), 2011 IEEE International Conference on

Conference_Location

Trondheim

ISSN

2153-3725

Print_ISBN

978-1-4244-7352-6

Electronic_ISBN

2153-3725

Type

conf

DOI

10.1109/ICDL.2011.6015433

Filename

6015433