Measurements and correction of no-load losses of power transformers

Author

Arseneau, Rejean ; So, Eddy ; Hanique, Ernst

Author_Institution

Inst. for Nat. Meas. Stand., Nat. Res. Council of Canada, Ottawa, Ont., Canada

Volume

54

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

503

Lastpage

506

Abstract

This paper investigates the practice of correcting the results of no-load loss measurements of power transformers for the effect of distorted supply voltage waveform. A three-phase 700-MVA power transformer is tested twice: first with its low-voltage windings connected line-to-neutral, with nearly sinusoidal test voltage conditions, and then for the second test with its windings connected line-to-line with more distorted voltage waveforms. The test data obtained during the measurement was reproduced at the National Research Council (NRC) Laboratory to demonstrate the limits of the application of the loss correction formula currently used.

Keywords

harmonic distortion; loss measurement; power transformer testing; 700 MW; National Research Council Laboratory; average voltmeter; distorted supply voltage waveform; loss correction formula; low-voltage windings; no-load loss measurements; power transformers; rms voltmeter; sinusoidal test voltage conditions; total harmonic distortion; voltage distortion; Current measurement; Distortion measurement; Frequency; Hysteresis; Loss measurement; Power measurement; Power transformers; Testing; Voltage; Voltmeters; Average voltmeter; corrected losses; no-load loss measurements; power transformer; rms voltmeter; total harmonic distortion (THD); voltage distortion;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2004.843407

Filename

1408220