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Magnetic crosstalk compensation for an optical current transducer

Niewczas, P. and Madden, W.I. and Michie, W.C. and Cruden, A.J. and McDonald, J.R. (2001) Magnetic crosstalk compensation for an optical current transducer. IEEE Transactions on Instrumentation and Measurement, 50 (5). pp. 1071-1075. ISSN 0018-9456

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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.

Item type: Article
ID code: 3555
Keywords: current measurement, digital systems, Faraday effect, magnetooptic transducer, power systems, Electrical engineering. Electronics Nuclear engineering, Instrumentation, Electrical and Electronic Engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Professional Services > Corporate Services Directorate
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 13 Jun 2007
    Last modified: 04 Sep 2014 10:28
    URI: http://strathprints.strath.ac.uk/id/eprint/3555

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