Onsite calibration of a current transformer using a Rogowski Coil

Esa-Pekka Suomalainen, Jari K. Hällström

Research output: Contribution to journalArticleScientificpeer-review

41 Citations (Scopus)

Abstract

This paper describes a reference current-measuring system for the onsite calibration of high-voltage current transformers. The reference current-measuring system consists of a Rogowski coil, a current shunt, two digitizing voltmeters, and a computer to control the voltmeters. The method of generation of the high current and the uncertainty of the calibration are discussed. The results of a calibration performed onsite on a 400-kV substation are presented. Uncertainties of 300 muA/A for ratio and 1 angular minute for phase displacement were achieved with this method onsite.
Original languageEnglish
Pages (from-to)1054-1058
JournalIEEE Transactions on Instrumentation and Measurement
Volume58
Issue number4
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

Fingerprint

Electric instrument transformers
transformers
Voltmeters
coils
Calibration
voltmeters
shunts
high current
high voltages
Electric potential
Uncertainty

Keywords

  • High current
  • Rogowski coil
  • high voltage
  • instrument current transformer (CT)
  • onsite calibration

Cite this

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Onsite calibration of a current transformer using a Rogowski Coil. / Suomalainen, Esa-Pekka; Hällström, Jari K.

In: IEEE Transactions on Instrumentation and Measurement, Vol. 58, No. 4, 2009, p. 1054-1058.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Onsite calibration of a current transformer using a Rogowski Coil

AU - Suomalainen, Esa-Pekka

AU - Hällström, Jari K.

PY - 2009

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N2 - This paper describes a reference current-measuring system for the onsite calibration of high-voltage current transformers. The reference current-measuring system consists of a Rogowski coil, a current shunt, two digitizing voltmeters, and a computer to control the voltmeters. The method of generation of the high current and the uncertainty of the calibration are discussed. The results of a calibration performed onsite on a 400-kV substation are presented. Uncertainties of 300 muA/A for ratio and 1 angular minute for phase displacement were achieved with this method onsite.

AB - This paper describes a reference current-measuring system for the onsite calibration of high-voltage current transformers. The reference current-measuring system consists of a Rogowski coil, a current shunt, two digitizing voltmeters, and a computer to control the voltmeters. The method of generation of the high current and the uncertainty of the calibration are discussed. The results of a calibration performed onsite on a 400-kV substation are presented. Uncertainties of 300 muA/A for ratio and 1 angular minute for phase displacement were achieved with this method onsite.

KW - High current

KW - Rogowski coil

KW - high voltage

KW - instrument current transformer (CT)

KW - onsite calibration

U2 - 10.1109/TIM.2008.2007031

DO - 10.1109/TIM.2008.2007031

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JO - IEEE Transactions on Instrumentation and Measurement

JF - IEEE Transactions on Instrumentation and Measurement

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