Discharges from moving particles in GIS [gas-insulated switchgear]

The study of the motion of moving metallic particles in GIS requires a good knowledge of the carried charge of the particle. In this paper, measurements of the charging process of a moving particle, performed in a realistic single-phase GIS, are presented. By measuring the charge impulses and the vo...

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Bibliographic Details
Published in:IEEE transactions on power delivery 1998-01, Vol.13 (1), p.17-22
Main Authors: Holmberg, M.E., Gubanski, S.M.
Format: Article
Language:English
Subjects:
Applied sciences
Charge measurement
Connection and protection apparatus
Current measurement
Electrical engineering. Electrical power engineering
Exact sciences and technology
Gas insulation
Geographic Information Systems
Particle measurements
Performance evaluation
Phase estimation
Phase measurement
Switchgear
Voltage
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Summary:The study of the motion of moving metallic particles in GIS requires a good knowledge of the carried charge of the particle. In this paper, measurements of the charging process of a moving particle, performed in a realistic single-phase GIS, are presented. By measuring the charge impulses and the voltage phase at consecutive impacts, it is possible to estimate the carried charge and then compare the results with the existing models of the particle charge. Also, besides the discharges from in-flight corona reported by several authors, it is shown that, for higher voltage levels, several discharges between the particle and the enclosure (outer electrode) can occur as the particle impacts with the enclosure.
ISSN:0885-8977
1937-4208
DOI:10.1109/61.660839