In-situ calibration of high-voltage three-phase transformer loss measuring systems

The application of a computer-controlled current-comparator-based load loss standard to the in-situ calibration of two different types of high-voltage three-phase transformer loss measuring systems at SMIT Transformers is described. The load loss standard simulates a high-voltage inductive load at p...

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Bibliographic Details
Published inIEEE transactions on instrumentation and measurement Vol. 50; no. 2; pp. 422 - 425
Main Authors So, E., Hanique, E.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2001
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Application software
Calibration
Computational modeling
Computer applications
Computer simulation
Current measurement
Electric potential
Frequency
Instrumentation
Loss measurement
Measurement standards
Phase transformers
Power factor
Reactive power
Transformers
Voltage
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Summary:The application of a computer-controlled current-comparator-based load loss standard to the in-situ calibration of two different types of high-voltage three-phase transformer loss measuring systems at SMIT Transformers is described. The load loss standard simulates a high-voltage inductive load at power frequencies which can provide load currents up to 2000 A at any power factor with a resolution of 1/spl times/10/sup -6/, and at test voltages up to 200 kV. It basically provides a known and stable power loss or reference power determined by the test voltage and the power factor setting, to the transformer loss measuring system, such that its accuracy can be characterized over different voltage, current, and power factor ranges.
Bibliography:ObjectType-Article-2
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content type line 23
ISSN:0018-9456
1557-9662
DOI:10.1109/19.918157