Acoustic monitoring of HV equipment with optical fiber sensors

Author

Kim, Tae Youiig ; Suh, Kwang S. ; Nam, Jin Ho ; Takada, T.

Author_Institution

Dept. of Mater. Sci. & Eng., Korea Univ., Seoul, South Korea

Volume

10

Issue

2

fYear

2003

fDate

4/1/2003 12:00:00 AM

Firstpage

266

Lastpage

270

Abstract

This paper presents the preliminary results on the application of optical fiber sensor (OFS) for the measurements of discharging signals in insulating oil. An all-optical-fiber-sensing system using a Mach-Zehnder interferometry technique was constructed. It was found that the pressure wave produced by discharges at the needle-sphere electrodes could be detected by OFS, which was compared with signals from a current probe and PZT sensor. By comparing amplitudes of acoustic signal measured by OFS, a correlation between acoustic and electrical discharge signals was observed.

Keywords

Mach-Zehnder interferometers; acoustic transducers; acoustic variables measurement; discharges (electric); electrodes; fibre optic sensors; insulating oils; power apparatus; signal detection; HV equipment; Mach-Zehnder interferometry technique; PZT sensor; acoustic discharge signals; acoustic monitoring; all-optical-fiber-sensing system; current probe; discharging signals measurement; electrical discharge signals; insulating oil; needle-sphere electrodes; optical fiber sensor; optical fiber sensors; pressure wave; Acoustic measurements; Acoustic sensors; Acoustic signal detection; Electrodes; Monitoring; Oil insulation; Optical fiber sensors; Optical interferometry; Petroleum; Probes;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2003.1194109

Filename

1194109