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http://dx.doi.org/10.5207/JIEIE.2008.22.10.049

Evaluation of life Expectancy of Power System Equipment Using Probability Distribution  

Kim, Gwang-Won (울산대학교 전기전자정보시스템공학부)
Hyun, Seung-Ho (울산대학교 전기전자정보시스템공학부)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.22, no.10, 2008 , pp. 49-55 More about this Journal
Abstract
This paper presents a novel evaluation method of life expectancy of power system equipment. The life expectancy means expected remaining lifetime; it can be usefully utilized to maintenance planning, equipment replacement planning, and reliability assessment. The proposed method is composed of three steps. Firstly, a cumulative probability for future years is evaluated for targeted age year. Secondly, the cumulative probability is modeled by well-blown cumulative distribution function(CDF) such as Weibull distribution. Lastly, life expectancy is evaluated as the mean value of the model. Since the model CDF is established in the proposed method, it can also evaluate the probability of equipment retirement within specific years. The developed method is applied to examples of generators of combined cycle power plants to show its effectiveness.
Keywords
Life Expectancy; Power System Equipment; Probability Distribution;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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