A technical-economic approach for distribution transformers sizing

Authors

  • Diego Fernando García Gómez Universidad del Valle
  • Diego Fernando Navas Universidad del Valle
  • Edwin Rivas Trujillo Universidad Distrital

Abstract

In colombia, distribution transformer ratings are selected upon the rated current flowing through circuits and branches feeding low-voltage networks. As a result, transformers turn out oversized. This paper shows a methodology for selecting distribution transformers based on technical and technoeconomical criteria as an alternative to current methodologies complying with NTC 2050. Whereas, technical criteria assure the operation of transformer within its maximum efficiency without loss of shelf life, the technoeconomical criteria balance a reasonable reduction of shelf life with a lower investment and service cost, even though the transformer is operating out of its maximun efficiency point. As a matter of fact, this later approach is of bigger interest for power distribution utilities. The proposed methodology, added to the overload capability of the transformers, allow to find the most suitable ratings in order to supply the expected demand, with lower investment and service costs and higher efficiency through the assets shelf life.

Author Biographies

Diego Fernando García Gómez, Universidad del Valle

Ph.D. En Ingeniería Eléctrica, Electrónica y Automática. Profesor
Asistente. Escuela de Ingeniería Eléctrica y Electrónica, Grupo de Investigación
en Alta Tensión – GRALTA

Diego Fernando Navas, Universidad del Valle

Magister en Ingeniería énfasis en Ingeniería Eléctrica. Profesor Asistente.
Escuela de Ingeniería Eléctrica y Electrónica, Grupo de Investigación
en Alta Tensión – GRALTA.

Edwin Rivas Trujillo, Universidad Distrital

Ph.D. En Ingeniería Eléctrica, Electrónica y Automática. Profesor Titular.
Facultad de Ingeniería, Grupo de Investigación en Compatibilidad
Electromagnética - GCEM.

Published

2016-08-02

How to Cite

[1]
D. F. García Gómez, D. F. Navas, and E. Rivas Trujillo, “A technical-economic approach for distribution transformers sizing”, Ing. y Des., vol. 34, no. 2, pp. 267–285, Aug. 2016.