Analysis of losses in cables and transformers under power quality related issues

Author

Tofoli, Fernando L. ; Morais, Aniel S. ; Gallo, Carlos A. ; Sanhueza, Sérgio M R ; De Oliveira, Aloísio

Author_Institution

Dept. of Electr. Eng., Fed. Univ. of Uberlandia, Brazil

Volume

3

fYear

2004

fDate

2004

Firstpage

1521

Abstract

This paper focuses on I²R losses under nonsinusoidal conditions, mainly in cables and transformers. For this purpose, a mathematical development that takes in account the presence of harmonic components in the I²R losses calculation will be presented, so that the effects of the harmonic distortion in the power system components and consequently the impact on the power factor can be analyzed. Based on this study, a factor that evaluates the power quality performance in low voltage networks is presented. This factor is directly associated to the economical viability, once that it points when the losses minimization is interesting according to the cost/benefit ratio.

Keywords

cost-benefit analysis; eddy current losses; harmonic distortion; power cables; power supply quality; power system harmonics; power transformers; I²R loss; cable; cost-benefit ratio; economical viability; harmonic component; harmonic distortion; power factor; power quality performance; power system component; transformer; voltage network; Cables; Harmonic analysis; Harmonic distortion; Low voltage; Power quality; Power system analysis computing; Power system economics; Power system harmonics; Reactive power; Transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE

Print_ISBN

0-7803-8269-2

Type

conf

DOI

10.1109/APEC.2004.1296066

Filename

1296066