SciELO - Scientific Electronic Library Online

 
vol.30 issue3Correlational Study of Factors such as Unemployment and Crime Indices in EcuadorThe Geometric Similitude Concept for the Correlation of Mutual Solubilities in Partially Miscible Mixtures of Ionic Liquids + Alcohols author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Información tecnológica

On-line version ISSN 0718-0764

Abstract

MARTINEZ, Daniel F.; CESPEDES, Alexander  and  GARCIA, Diego F.. Evaluation of Thermal Models used to Estimate the Hot-Spot Temperature in Distribution Transformers. Inf. tecnol. [online]. 2019, vol.30, n.3, pp.295-306. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642019000300295.

This paper presents an evaluation of the main transformers thermal models considering the number of input data required and the output data reliability of each model. Also, a brief analysis of transformer thermal behaviour based on the hot-spot temperature is shown. Then, an experimental validation of the thermal models performed in two oil-immersed distribution transformers is described, simulating a load profile in specific periods of time. Finally, the experimental results are compared with data resulting from the implementation of the models in numerical analysis software in order to establish the parametric differences and precision of each model showing that the most optimal performance corresponds to the model of differential equations of the International Electrotechnical Commission.

Keywords : thermal models; load profile; hot-spot temperature; oil-immersed transformers; assessment.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )