Harmonics-transformer derating

Author

Egolf, Daniel W. ; Flechsig, Alfred J.

Author_Institution

Washington State Univ., Pullman, WA, USA

fYear

1994

fDate

1-5 May 1994

Firstpage

79

Lastpage

84

Abstract

Power transformers supplying nonsinusoidal load current often need to be derated. The ANSI/IEEE C57.110-1986 standard provides a method by which derating may be performed. However, derating only provides an estimate of remaining transformer capacity, since subsequent load may significantly change the relative harmonic current values. The contribution of this paper is to provide a clear guide that can be used in applying the standard. This paper is not meant to replace the standard but to supplement it by providing correct examples and simplified equations

Keywords

load (electric); power system harmonics; power transformers; standards; transformer windings; ANSI/IEEE C57.110-1986 standard; derating; guidelines; harmonic current; nonsinusoidal load current; power transformers; remaining capacity; Current supplies; Harmonic analysis; Hydrogen; Information analysis; Manufacturing; Nonlinear equations; Power transformer insulation; Power transformers; Spectral analysis; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial and Commercial Power Systems Technical Conference, 1994. Conference Record, Papers Presented at the 1994 Annual Meeting, 1994 IEEE

Conference_Location

Irvine, CA

Print_ISBN

0-7803-1877-3

Type

conf

DOI

10.1109/ICPS.1994.303557

Filename

303557