title: Analysis of dissolved C2H2 in transformer oils using laser Raman spectroscopy.
abstract: We have developed a laser Raman spectroscopy technique for assessing the working conditions of transformers by measuring dissolved C2H2 gas concentrations present in transformer oils. A frequency doubled Q-switched Nd:YAG laser (532 nm) was used as a laser source, and Raman signals at ~1972 cm(-1) originating from C2H2 gas dissolved in oil were detected. The results show that laser Raman spectroscopy is a useful alternative method for detecting transformer faults.
authors.affiliation: Institute for Laser Technology, Suita, Osaka, Japan. somekawat@ile.osaka‑u.ac.jp
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Somekawa
authors.forename: Makoto
authors.initials: M
authors.lastname: Kasaoka
authors.forename: Fumio
authors.initials: F
authors.lastname: Kawachi
authors.forename: Yoshitomo
authors.initials: Y
authors.lastname: Nagano
authors.forename: Masayuki
authors.initials: M
authors.lastname: Fujita
authors.forename: Yasukazu
authors.initials: Y
authors.lastname: Izawa