A new model for predicting hottest-spot temperature in transformers

Oluwaseun A. Amoda, Daniel Tylavsky, Gary A. McCulla, Wesley A. Knuth

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

This paper presents an investigation into the adequacy of the IEEE hottest-spot temperature (HST) model, when the model parameters are to be determined from measured field data. Because of the inadequacy of this model, a modified version of the IEEE HST is proposed to account for the effects of dynamic variations of the top-oil temperature (TOT) on HST. The calculation of HST traditionally relies on a balanced load assumption. For the practical case when the load is unbalanced, equations are developed to estimate the individual load profile on each phase from the HST on each phase and the total load. The IEEE HST model and its modified version are used to estimate the parameters of two different transformers. The results of the parameter estimations are provided and conclusions about the two models are drawn

Original languageEnglish (US)
Title of host publication40th North American Power Symposium, NAPS2008
DOIs
StatePublished - Dec 1 2008
Event40th North American Power Symposium, NAPS2008 - Calgary, AB, Canada
Duration: Sep 28 2009Sep 30 2009

Publication series

Name40th North American Power Symposium, NAPS2008

Other

Other40th North American Power Symposium, NAPS2008
CountryCanada
CityCalgary, AB
Period9/28/099/30/09

Keywords

  • Hottest-spot temperature
  • Top-oil temperature
  • Transformer
  • Transformer thermal model

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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  • Cite this

    Amoda, O. A., Tylavsky, D., McCulla, G. A., & Knuth, W. A. (2008). A new model for predicting hottest-spot temperature in transformers. In 40th North American Power Symposium, NAPS2008 [5307407] (40th North American Power Symposium, NAPS2008). https://doi.org/10.1109/NAPS.2008.5307407