Reliability-Based Preventive Maintenance of Oil Circuit Breaker subject to Competing Failure Processes
Volume 9, Number 5, September 2013 - Paper 04 - pp. 495-504
FAIROUZ IBERRAKEN1, RAFIK MEDJOUDJ1, RABAH MEDJOUDJ1, DJAMIL AISSANI2 and KLAUS DIETER HAIM31 Lamos Laboratory, Electrical Engineering Department, University of Bejaia, Algeria
2 Lamos Laboratory, Operational Research Department, University of Bejaia, Algeria
3 Applied Science of Technology, University of Zittau, Germany
(Received on September 23, 2012, revised on May 09 and May 22, 2013)
This paper investigates technical and organizational tools to improve performances of a multi-state degraded system subject to multiple competing failure processes. The competing failure processes treated in this paper are oil insulating aging and electrical contacts wear out of high voltage oil circuit breaker. To degradation processes, is associated random shocks process highlighted by the stresses due to short-circuit solicitations. To keep a high level of circuit breaker reliability, two policies are developed and cover reliability increasing of the downstream feeder and reliability based preventive maintenance of the item. The first policy is developed using technical and organizational measures, while the second policy is based on improvement factors method optimizing availability under threshold reliability and a maximum benefit. The results obtained using a case study allow the decision maker to reach better information, to target the equipment that reduces the performances of the system, and to practice suitable maintenance actions.
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