Numerical comparator

G - Physics – 01 – R

Patent

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Details

G01R 25/00 (2006.01) G01R 19/25 (2006.01) H02H 3/38 (2006.01) G01R 21/133 (2006.01) G01R 31/02 (2006.01) H02H 3/00 (2006.01) H02H 3/40 (2006.01)

Patent

CA 2203166

A numerical comparator (20) is disclosed. The numerical comparator (20) employs numerical techniques based upon the behavior of the cylinder unit (18) to compare phasors in real time. In one application of this invention, the torque signal generated by the numerical comparator, Mk+1, is employed to determine whether a fault has occurred in a transmission line. Another application involves employing the output Mk+1 to determine the direction of power flow in the transmission line. In yet another application, the output Mk+1 is used to determine whether a voltage or current has exceeded a predetermined threshold.

Comparateur numérique (20) recourant à des techniques numériques se basant sur le comportement d'une unité cylindrique (18) pour comparer des vecteurs tournants en temps réel. Dans l'une des applications de l'invention, le signal de couple M¿k+1? produit par le comparateur numérique, sert à déterminer si une faute s'est produite dans la ligne de transmission. Une autre application consiste à employer la sortie M¿k+1? pour déterminer la direction du flux de puissance dans la ligne de transmission. Dans une autre application enfin, la sortie M¿k+1? sert à déterminer si une tension ou une intensité a dépassé un seuil prédéterminé.

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