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Device for measuring currents in the conductors of a sheathed cable of a polyphase network

Abstract : The invention relates to a device for measuring currents (3) in the conductors of a sheathed cable of a polyphase network, comprising at least three magnetic sensors (300) arranged around a central hole (312) through which the cable to be measured is intended to pass, the number of conductors in said cable being less than the number of sensors, and a calculation device (330) configured to: access a library of matrices [K] and [K]+, where [K]+ is a pseudo-inverse matrix of matrix [K]; form a vector [B] including a magnetic field measurement for each of the sensors; for various cable configurations and various angular positions of the sensors relative to the cables, calculate a residual vector [R] = [K].[K]+.[B] - [B]; select the matrix [K]+ for which the norm of the vector [R] is minimal; and calculate [1] = [K]+.[B], where [K]+ is the selected matrix.
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https://hal.archives-ouvertes.fr/hal-00981641
Contributor : Publications Ampère <>
Submitted on : Tuesday, April 22, 2014 - 3:40:00 PM
Last modification on : Wednesday, July 8, 2020 - 12:42:24 PM

Identifiers

  • HAL Id : hal-00981641, version 1

Citation

Menad Bourkeb, Charles Joubert, Riccardo Scorretti, Olivier Ondel, Hamed Yahoui, et al.. Device for measuring currents in the conductors of a sheathed cable of a polyphase network. France, Patent n° : WO 2013068360 A1. 2013. ⟨hal-00981641⟩

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