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Using a Bayes classifier to optimize alarm generation to electric power generator stator overheating

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3 Author(s)
Fischer, D. ; Kinectrics, Toronto, Ont., Canada ; Szabados, B. ; Poehlman, W.F.S.

This paper shows how a Bayes classifier can be implemented for a failure detection system where statistical failure data is not available for one of the classes. Results of field data obtained from a large electric power generator are shown. The classifier is further improved by the iterative re-evaluation of the prior probabilities, which results in the use of higher alarm threshold values when a good agreement between the monitored quantity and its estimated value is observed, while large disagreement values result in smaller thresholds. As expected, the proposed system is an improvement over a classical Bayesian implementation and a large improvement over a fixed, arbitrary value threshold classifier.

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:52 ,  Issue: 3 )

Date of Publication:

June 2003

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