Prediction of internal faults of GIS by frequency spectrum of typical vibration on the enclosure

Author

Bihong, Guo ; Hanhua, Zhang

Author_Institution

Electr. Power Res. Inst., Beijing, China

fYear

1988

fDate

12-16 Sep 1988

Firstpage

148

Abstract

The authors report several typical frequency characteristics of vibrations of the metallic enclosure of a GIS (gas-insulated substation), especially the characteristics of vibration caused by free conducting particles and partial discharge under alternating voltage. An examination is made of contaminants under different SF₆ gas pressures, the shapes of the electrodes, and their electrical strength. An inspection system which can predict internal latent faults of GIS from the vibration frequency spectrum is described

Keywords

electric breakdown of gases; gaseous insulation; partial discharges; substations; sulphur compounds; GIS; SF₆ gas pressures; alternating voltage; contaminants; electrical strength; fault prediction; free conducting particles; frequency characteristics of vibrations; frequency spectrum; gas-insulated substation; inspection system; internal faults; internal latent faults; metallic enclosure; partial discharge; typical vibration; vibration frequency spectrum; Acceleration; Circuit breakers; Coaxial components; Copper; Electrodes; Frequency; Geographic Information Systems; Partial discharges; Switching circuits; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of

Conference_Location

Beijing

Type

conf

DOI

10.1109/ICPADM.1988.38355

Filename

38355