Study on an after-laying test for a long-distance GIL

Author

Araki, Takeshi ; Nishima, H. ; Hata, Hiroki ; Yamaguchi, Hitoshi ; Yamauchi, Takashi ; Miyashita, Makoto

Author_Institution

Sumitomo Electr. Ind. Ltd., Osaka

Volume

13

Issue

3

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

718

Lastpage

727

Abstract

Technologies for the after-laying test of long-distance SF₆ gas insulated transmission line (GIL) have been developed for the detection of partial discharge (PD) and contact defects. We constructed a long (168 m) test line in a deep tunnel and clarified the propagation characteristics of PD signals through the GIL as well as the spatial sensitivity and S/N characteristics of PD sensors for locating metallic particles. We have also proposed the application of a fiber-optic temperature distribution sensor for locating contact defects and confirmed the validity of this sensor for the GIL test line

Keywords

SF₆ insulation; cable laying; fibre optic sensors; insulation testing; partial discharges; power cable insulation; power cable testing; power transmission lines; temperature distribution; temperature measurement; 168 m; 275 kV; PD signals propagation; S/N characteristics; SF₆; SF₆ gas insulated transmission line; after-laying test; contact defects; deep tunnel; fiber-optic temperature distribution sensor; metallic particles location; partial discharge detection; propagation characteristics; spatial sensitivity; Conductors; Gas insulated transmission lines; Insulation; Optical fiber devices; Optical fiber sensors; Optical fiber testing; Partial discharges; Sensor phenomena and characterization; Temperature distribution; Temperature sensors;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.686965

Filename

686965