Onsite calibration of a current transformer using a Rogowski Coil

Esa-Pekka Suomalainen; Jari K. Hällström

doi:10.1109/TIM.2008.2007031

Onsite calibration of a current transformer using a Rogowski Coil

Esa-Pekka Suomalainen, Jari K. Hällström

Not published at VTT

Helsinki University of Technology

Research output: Contribution to journal › Article › Scientific › peer-review

64 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 language	English
Pages (from-to)	1054-1058
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	58
Issue number	4
DOIs	https://doi.org/10.1109/TIM.2008.2007031
Publication status	Published - 2009
MoE publication type	A1 Journal article-refereed

Keywords

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

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10.1109/TIM.2008.2007031

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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.",

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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

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JF - IEEE Transactions on Instrumentation and Measurement

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ER -

Onsite calibration of a current transformer using a Rogowski Coil

Abstract

Keywords

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