Comparative Study of Two Thermal Aging Estimating Methods for Power Transformers

Ricardo David Medina; Andres Arturo Romero; Enrique Esteban Mombello; Giuseppe Ratta

doi:10.1109/TLA.2015.7387233

Comparative Study of Two Thermal Aging Estimating Methods for Power Transformers

Ricardo David Medina, Andres Arturo Romero, Enrique Esteban Mombello, Giuseppe Ratta

Energy Research Group (GIE)

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

In this paper a comparison between two methods for the calculation of the hot spot temperature of a power transformer is presented. The first method is proposed by C57.91 IEEE Standard which is based on daily averages and exponential equations; on the other hand, the second method is based in differential equations and hourly measurements. To compare these methods, the ageing of a currently operating power transformer has been estimated. A comparison of the results of degradation using actual values and a hypothetical overload were performed. A brief description of each method, aging results, time calculation and analysis of the results is presented.

Original language	English
Article number	7387233
Pages (from-to)	3287-3293
Number of pages	7
Journal	Ieee Latin America Transactions
Volume	13
Issue number	10
DOIs	https://doi.org/10.1109/TLA.2015.7387233
State	Published - Oct 2015

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

ageing
end of life assessment
paper ageing
power transformer
solid insulation
thermal ageing
thermal degradation

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10.1109/TLA.2015.7387233

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abstract = "In this paper a comparison between two methods for the calculation of the hot spot temperature of a power transformer is presented. The first method is proposed by C57.91 IEEE Standard which is based on daily averages and exponential equations; on the other hand, the second method is based in differential equations and hourly measurements. To compare these methods, the ageing of a currently operating power transformer has been estimated. A comparison of the results of degradation using actual values and a hypothetical overload were performed. A brief description of each method, aging results, time calculation and analysis of the results is presented.",

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Comparative Study of Two Thermal Aging Estimating Methods for Power Transformers

Abstract

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