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Optimal Economic Life Interval Evaluation Method of Transformers
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science & Tech-nology, Wuhan, China
Research Institute of Economics and Technology, Hubei Electric Power Company Limited, Wuhan, China
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science & Tech-nology, Wuhan, China
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science & Tech-nology, Wuhan, China
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science & Tech-nology, Wuhan, China
- 1 State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science & Tech-nology, Wuhan, China
- 2 Research Institute of Economics and Technology, Hubei Electric Power Company Limited, Wuhan, China
- 3 State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science & Tech-nology, Wuhan, China
- 4 State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science & Tech-nology, Wuhan, China
- 5 State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science & Tech-nology, Wuhan, China
Energy and Power Engineering·Volume 09 (2017)·Pages 78–87·Published 6 April 2017·DOI10.4236/epe.2017.94B010
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Abstract
This paper proposed a method of optimal economic life interval evaluation of transformer, thus providing scientific support for power system planning and reconstruction. First, obtaining the transformer failure rate by using Levenberg-Marquardt based least squares algorithm on the consumption that transformer failure mode meets three-parameters Weibull distribution. Second, calculating operation cost and failure cost of transformer during its life cycle on the basis of transformer failure rate. Then, acquiring the optimal economic life interval of transformer through life cycle minimal average annual cost based on the theory of interval analysis. Finally, the proposed method is proved to be effective by applying to some real transformers.
KeywordsFailure Rate of TransformersWeibull DistributionLevenberg-Marquardt AlgorithmInterval AnalysisLife Cycle Cost (LCC)
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