Repowering of power transformers- experiences

Authors

  • Jaime Andrés Padilla University of Valle
  • Héctor Cadavid University of Valle
  • César Rincón Explorer Industries
  • Juan Castro Pedagogical and Technological University of Colombia

DOI:

https://doi.org/10.17533/udea.redin.13829

Keywords:

transformers, power upgrade, redesign

Abstract

In this paper, an experience is presented showing repowering an oil-submerged power transformer. The most efficient option is the redesign and repowering a transformer 20/25 MVA, 115/34.5 kV, Y/Y/D to increase the power from 20 to 30/35 MVA. This experience considers methodological aspects, preliminary tests, redesign and construction of main winding and compensation winding; final tests factory and validation of the methodology were carried out. The implementation of the methodology was conducted through a computational tool and the validation was conducted by testing at the factory laboratory of Industries Explorer, Duitama, Colombia.

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Author Biographies

Jaime Andrés Padilla, University of Valle

High Voltage Research Group – GRALTA.

Héctor Cadavid, University of Valle

High Voltage Research Group – GRALTA.

Juan Castro, Pedagogical and Technological University of Colombia

Grids E Research Group.

References

H. Cadavid. Dimensionamiento de transformadores. Ed. Universidad del Valle. Cali. 1996. pp. 1-240.

M. J. Heathcote. J & P Transformer Book. Ed. Planta Tree. Guidford. Kings Lynn (UK). 1998. pp. 24.

J. A. Padilla. Repotenciación de transformadores de potencia. Tesis de grado. Universidad del Valle. 2007. pp. 1-142.

C. P. McShane, J. L. Corkran, K. J. Rapp, J. Luksich, “Aging of paper

insulation retrofilled with natural ester dielectric fluid”. Electrical Insulation and Dielectric Phenomena. Annual Report Conference. 2003. pp. 124- 127.

Published

2012-12-04

How to Cite

Padilla, J. A., Cadavid, H., Rincón, C., & Castro, J. (2012). Repowering of power transformers- experiences. Revista Facultad De Ingeniería Universidad De Antioquia, (59), 247–256. https://doi.org/10.17533/udea.redin.13829

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