Oil-filled cable surveillance system using newly developed optical fiber gas sensor

Author

Sasaki, Tatsuo ; Kurihara, Masaki ; Uchida, Masahiko ; Nakamura, Teruyuki ; Kawakami, Hiroshi

Author_Institution

Tokyo Electr. Power Co. Inc., Japan

Volume

11

Issue

2

fYear

1996

fDate

4/1/1996 12:00:00 AM

Firstpage

656

Lastpage

662

Abstract

A new surveillance system for oil-filled power cables, which can provide continuous monitoring using a newly developed optical gas sensor that can detect the concentration of the gas dissolved in the oil with extremely high sensitivity, has been developed. It was proved that the degree of deterioration of the insulating oil can be detected by measuring C₂H₂ and CH₄ by investigating the relation between the degree of deterioration and amount of combustible gas generated. In order to detect extremely small amounts of gas, a new gas detecting method using the absorption line of the gas using a frequency modulated technique has been developed. The gas detection ability was also confirmed by examination using a 66 kV oil-filled cable and the possibility of detection at an early stage is expected

Keywords

chemical variables measurement; electric breakdown; fibre optic sensors; gas sensors; insulating oils; insulation testing; power cable insulation; power cable testing; power system measurement; 66 kV; C₂H₂; CH₄; absorption line; breakdown tests; continuous monitoring; frequency modulated technique; gas detecting method; oil-filled power cables; optical fiber gas sensor; sensitivity; surveillance system; Gas detectors; Gas insulation; Monitoring; Oil filled cables; Oil insulation; Optical sensors; Petroleum; Power cables; Surveillance; Ultraviolet sources;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.489319

Filename

489319