Energy and Power Engineering

Volume 9, Issue 4 (April 2017)

ISSN Print: 1949-243X   ISSN Online: 1947-3818

Google-based Impact Factor: 1.42  Citations  

Optimal Economic Life Interval Evaluation Method of Transformers

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DOI: 10.4236/epe.2017.94B010    3,030 Downloads   4,333 Views  
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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.

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Mei, Z. , Ruan, B. , Li, Y. , Huang, J. and Long, C. (2017) Optimal Economic Life Interval Evaluation Method of Transformers. Energy and Power Engineering, 9, 78-87. doi: 10.4236/epe.2017.94B010.

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