A continuous UHF monitor for gas-insulated substations

Author

Pearson, J.S. ; Hampton, B.F. ; Sellars, A.G.

Author_Institution

Center for Electr. Power Eng., Strathclyde Univ., Glasgow, UK

Volume

26

Issue

3

fYear

1991

fDate

6/1/1991 12:00:00 AM

Firstpage

469

Lastpage

478

Abstract

Assessing the condition of a GIS by measuring the UHF signals generated in it by partial discharges gives warning of developing faults. The signals are taken from couplers built into the equipment. The couplers are continuously monitored using special amplifying and detection units connected in a digital optical fiber network. The data collected can also be interpreted by an expert system and an analysis of the situation sent via a modem link to a PC. Laboratory trials of the continuous monitor have been carried out on a test rig of 400-kV GIS chambers. The basic principles of the monitor and the results of its trials are given

Keywords

expert systems; gaseous insulation; optical fibres; optical links; partial discharges; substations; 400 kV; continuous UHF monitor; couplers; detection units; digital optical fiber network; expert system; gas-insulated substations; modem link; partial discharges; Expert systems; Geographic Information Systems; Modems; Monitoring; Optical fiber couplers; Optical fiber networks; Partial discharges; Signal generators; Substations; UHF measurements;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.85119

Filename

85119