Evaluation of Mean Life of Power Equipment based on 3-parameter Weibull Distribution
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- Zhou Yicheng
- Tepco Systems Corporation
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- Kato Moritoshi
- Tepco Systems Corporation
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- Saitou Naoki
- Waseda University
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- Yokoyama Ryuichi
- Waseda University
Bibliographic Information
- Other Title
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- 3母数ワイブル分布に基づく電力設備の平均寿命推定法
- 3 ボスウ ワイブル ブンプ ニ モトズク デンリョク セツビ ノ ヘイキン ジュミョウ スイテイホウ
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Abstract
Evaluation of the mean life of equipments is a basic issue for effective equipment maintenance. This paper presents a method to estimate the mean life and its standard deviation of power system equipments with limited end-of-life failure data. We propose a model using 3-parameter Weibull distribution based on the results Li (2004) produced. It is assumed that the mean life of power equipments consists of “non end-of-life failure period” and “period of aging end-of-life failure”, which is represented by a location parameter of Weibull distribution. Three parameters of Weibull distribution are estimated by applying Levenberg-Marquardt method, which is one of the optimization algorithms. The computational procedures of non-linear regression, which take account both of good convergence and practical use, are proposed. Numerical examples show that our model better fits to actual data than 2-parameter Weibull distribution model.
Journal
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- IEEJ Transactions on Power and Energy
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IEEJ Transactions on Power and Energy 129 (7), 889-896, 2009
The Institute of Electrical Engineers of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282679578476672
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- NII Article ID
- 10025100396
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- NII Book ID
- AN10136334
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- ISSN
- 13488147
- 03854213
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- NDL BIB ID
- 10357561
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed