Development of detection and diagnostic techniques for partial discharges in GIS

Author

Oyama, M. ; Hanai, E. ; Aoyagi, H. ; Murase, H. ; Ohshima, I. ; Menju, S.

Author_Institution

Toshiba Corp., Kawasaki, Japan

Volume

9

Issue

2

fYear

1994

fDate

4/1/1994 12:00:00 AM

Firstpage

811

Lastpage

818

Abstract

This paper describes detection and diagnostic techniques for partial discharges in gas insulated substations (GIS). Partial-discharge current waveforms of SF₆ gas and external noise characteristics of actual substations were investigated, and a measuring system having sensors in GIS and employing frequency range of VHF band was developed. By this system, detecting very small partial discharges of several 10 pC level has become possible. Also, a neural network system, focusing attention as a method for recognizing patterns, was applied for determining causes for partial discharge in GIS, and its applicability has been proved

Keywords

charge measurement; electric current measurement; gaseous insulation; neural nets; partial discharges; power engineering computing; substations; sulphur compounds; GIS; SF₆; SF₆ gas; VHF band; detection techniques; diagnostic techniques; external noise characteristics; gas insulated substations; neural network system; partial discharges; partial-discharge current waveforms; pattern recognition; Current measurement; Frequency measurement; Gas detectors; Gas insulation; Geographic Information Systems; Noise measurement; Partial discharge measurement; Partial discharges; Sensor phenomena and characterization; Substations;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.296261

Filename

296261