1. Event timing and shape analysis of vibration bursts from power circuit breakers
- Author
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Polycarpou, A.A., Soom, A., Swarnakar, V., Valtin, R.A., Acharya, R.S., Demjanenko, V., Soumekh, M., Benenson, D.M., and Porter, J.W.
- Subjects
Electric circuit-breakers -- Research ,Electric power systems -- Maintenance and repair ,Vibration -- Control ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
Noninvasive vibration diagnostic techniques are implemented to assess the mechanical condition of power circuit breakers. A diagnostic system, the Prototype Commercial Portable Diagnostic System (PCPDS) has been developed. Hardware of the PCPDS includes a portable computer, and a data acquisition unit and computer communication canis. Signal processing techniques include the discrete energy statistics envelope, short-time power spectrum, tinting extraction algorithm and chi-square based shape test. Decision-making is carded out via a voter program, to which individual results from the timing and shape analysis programs are passed. Statistical and empirical thresholds have been established, that classify the circuit breaker as being in Normal-Transitional-Abnormal (Green-Yellow-Red) condition.
- Published
- 1996