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| Weibull-Markov Reliability Analysis of Industrial Consumer Circuit Breakers. A Case Study of the Kawempe Industrial Area
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Kayenga Tendo Joshua, Peter Okidi Lating, Milton Edimu
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Abstract:
For the quality of power to be good, most Industrial Consumers should have organized maintenance frameworks and records and should ensure that maintenance and overhaul are carried out promptly as opposed to the last stage of life of an asset when serious degradation has occurred. This is however never the case since most asset operators don't pay attention to unobserved (hidden) factors that influence a rapidly rising failure rate and deterioration of the asset in its course of life. Additionally, hidden failures in protection systems cause about 75% of electrical power protection system blackouts. They therefore result into heavy technical and economic losses in case of a last stage failure on the protection system and should be given high consideration. In a preliminary study carried out in Kawempe Industrial Area, high voltage Circuit Breakers of 50% Industrial consumers had a history of cascaded failures for the last 30 years. There is therefore need to carry out a Root Cause Analysis (RCA) on Circuit breaker performance and reliability impact assessment on the aging process on CBs so as to guide investment into proper asset management frameworks that will minimize high impact of poor quality of supply margins.
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