Evaluation of performance of distribution transformers supplying non linear loads currents: Effect of oversizing

Author

Zeraatparvar, Ali ; Sami, Taghi ; Raheli, F. Abbasi

Author_Institution

Azerbaijan Higher Educ. & Res. Complex, Tabriz, Iran

fYear

2011

Firstpage

1

Lastpage

4

Abstract

Harmonic currents, generated by non-linear loads, produce `penalty losses´ in every element of an electrical distribution system. These harmonic-related losses reduce system efficiency, cause apparatus overheating, and increase power and air conditioning costs. In this paper, evaluation of transformer losses under non-linear load conditions will be discussed. In addition, the results of practical measurements of full filled on 7 units of distribution transformers in Tabriz Power Electric Distribution network are evaluated and some suggestions to improve the situation are presented.

Keywords

distribution networks; load (electric); power system harmonics; power transformers; Harmonic currents; Tabriz Power Electric Distribution network; apparatus overheating; distribution transformers; electrical distribution system; nonlinear loads current supply; system efficiency; Harmonic analysis; Oil insulation; Power system harmonics; Power transformer insulation; Temperature measurement; Windings; Distribution Networks; Harmonics Effect; Non-Linear Loads; Transformer Losses;

fLanguage

English

Publisher

ieee

Conference_Titel

Environment and Electrical Engineering (EEEIC), 2011 10th International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4244-8779-0

Type

conf

DOI

10.1109/EEEIC.2011.5874586

Filename

5874586