Title :
Measurement of three-phase transformer derating and reactive power demand under nonlinear loading conditions
Author :
Fuchs, Ewald F. ; Lin, Dingsheng ; Martynaitis, Jonas
Author_Institution :
Univ. of Colorado, Boulder, CO, USA
fDate :
4/1/2006 12:00:00 AM
Abstract :
The measurement of real and apparent power derating of three-phase transformers is important for transformers feeding nonlinear loads. This paper presents a new digital data-acquisition method for measuring derating and reactive power demand of three-phase transformers under full or partial load conditions. The accuracy requirements of the instruments employed (potential, current transformers, shunts, voltage dividers, optocouplers volt- and current meters) are addressed. Application examples demonstrate the usefulness of this new digital data-acquisition method.
Keywords :
data acquisition; power measurement; power transformers; apparent power derating measurement; digital data acquisition method; nonlinear loading conditions; reactive power demand measurement; real power derating measurement; three-phase transformer derating measurement; Circuits; Copper; Current transformers; Frequency; Instruments; Loss measurement; Phase transformers; Power measurement; Reactive power; Voltage transformers; Harmonics; nonsinusoidal operation; reactive power demand; real and apparent power derating; transformer losses;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2005.858744
