Magnetic crosstalk compensation for an optical current transducer

P. Niewczas; W.I. Madden; W.C. Michie; A.J. Cruden; J.R. McDonald

doi:10.1109/IMTC.2000.848713

Magnetic crosstalk compensation for an optical current transducer

P. Niewczas, W.I. Madden, W.C. Michie, A.J. Cruden, J.R. McDonald

Electronic And Electrical Engineering

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

37 Citations (Scopus)

Abstract

In this paper we analyse the errors associated with magnetic cross-talk within point type, or unlinked, Optical Current Transducers (OCTs) working in the three-phase electric current transmission systems. It is shown that, for most practical conductor arrangements, the magnetic cross-talk is sufficient to introduce errors unacceptable for the accuracy requirements demanded front the OCT. A solution to this problem is devised around a unique compensation method which solves, in real time, a set of linear equations, each representing the instantaneous output signal from one phase current sensor. The equations are created using calibration factors which can be evaluated for the particular conductors arrangement using experimental or analytical methods. The solution of the above set of equations may be implemented using Digital Signal Processing (DSP), which provides the number of sought instantaneous values of currents in the considered conductors arrangement.

Original language	English
Pages (from-to)	1071-1075
Number of pages	4
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	50
Issue number	5
DOIs	https://doi.org/10.1109/IMTC.2000.848713
Publication status	Published - 2001

Keywords

current measurement
digital systems
Faraday effect
magnetooptic transducer
power systems

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10.1109/IMTC.2000.848713

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title = "Magnetic crosstalk compensation for an optical current transducer",

abstract = "In this paper we analyse the errors associated with magnetic cross-talk within point type, or unlinked, Optical Current Transducers (OCTs) working in the three-phase electric current transmission systems. It is shown that, for most practical conductor arrangements, the magnetic cross-talk is sufficient to introduce errors unacceptable for the accuracy requirements demanded front the OCT. A solution to this problem is devised around a unique compensation method which solves, in real time, a set of linear equations, each representing the instantaneous output signal from one phase current sensor. The equations are created using calibration factors which can be evaluated for the particular conductors arrangement using experimental or analytical methods. The solution of the above set of equations may be implemented using Digital Signal Processing (DSP), which provides the number of sought instantaneous values of currents in the considered conductors arrangement.",

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author = "P. Niewczas and W.I. Madden and W.C. Michie and A.J. Cruden and J.R. McDonald",

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T1 - Magnetic crosstalk compensation for an optical current transducer

AU - Niewczas, P.

AU - Madden, W.I.

AU - Michie, W.C.

AU - Cruden, A.J.

AU - McDonald, J.R.

PY - 2001

Y1 - 2001

N2 - In this paper we analyse the errors associated with magnetic cross-talk within point type, or unlinked, Optical Current Transducers (OCTs) working in the three-phase electric current transmission systems. It is shown that, for most practical conductor arrangements, the magnetic cross-talk is sufficient to introduce errors unacceptable for the accuracy requirements demanded front the OCT. A solution to this problem is devised around a unique compensation method which solves, in real time, a set of linear equations, each representing the instantaneous output signal from one phase current sensor. The equations are created using calibration factors which can be evaluated for the particular conductors arrangement using experimental or analytical methods. The solution of the above set of equations may be implemented using Digital Signal Processing (DSP), which provides the number of sought instantaneous values of currents in the considered conductors arrangement.

AB - In this paper we analyse the errors associated with magnetic cross-talk within point type, or unlinked, Optical Current Transducers (OCTs) working in the three-phase electric current transmission systems. It is shown that, for most practical conductor arrangements, the magnetic cross-talk is sufficient to introduce errors unacceptable for the accuracy requirements demanded front the OCT. A solution to this problem is devised around a unique compensation method which solves, in real time, a set of linear equations, each representing the instantaneous output signal from one phase current sensor. The equations are created using calibration factors which can be evaluated for the particular conductors arrangement using experimental or analytical methods. The solution of the above set of equations may be implemented using Digital Signal Processing (DSP), which provides the number of sought instantaneous values of currents in the considered conductors arrangement.

KW - current measurement

KW - digital systems

KW - Faraday effect

KW - magnetooptic transducer

KW - power systems

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DO - 10.1109/IMTC.2000.848713

M3 - Article

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EP - 1075

JO - IEEE Transactions on Instrumentation and Measurement

JF - IEEE Transactions on Instrumentation and Measurement

IS - 5

ER -

Magnetic crosstalk compensation for an optical current transducer

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