Title :
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
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;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38355
