Noninvasive condition assessment and event timing for power circuit breakers

Noninvasive diagnostics, involving short-time spectra, short-time energy, and automatic timing techniques, were used to assess the mechanical condition of oil and puffer circuit breakers and to determine the timing of events occurring during operation. Analysis of the vibration signatures leads to (...

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Bibliographic Details
Published in:IEEE transactions on power delivery 1992-01, Vol.7 (1), p.353-360
Main Authors: Hess, D.P., Park, S.Y., Tangri, M.K., Vougioukas, S.G., Soom, A., Demjanenko, V., Acharya, R.S., Benenson, D.M., Wright, S.E.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit breakers
Circuit testing
Connection and protection apparatus
Electrical engineering. Electrical power engineering
Energy resolution
Event detection
Exact sciences and technology
Petroleum
Signal processing
Signal processing algorithms
Signal resolution
Timing
Vibrations
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Summary:Noninvasive diagnostics, involving short-time spectra, short-time energy, and automatic timing techniques, were used to assess the mechanical condition of oil and puffer circuit breakers and to determine the timing of events occurring during operation. Analysis of the vibration signatures leads to (1) the characterization of a circuit breaker through a single index, the resolution ratio, and (2) automatic timing algorithms. The accuracy of the automatic timing algorithms permits both the timing of events and the detection of shifts in the timing associated with changes in the condition of a unit. Application of these methods to several oil and SF/sub 6/ puffer circuit breakers is described. Results are reported for circuit breaker operation under unenergized and energized-loaded conditions.< >
ISSN:0885-8977
1937-4208
DOI:10.1109/61.108929