Method and detector for identifying insulator flashover

G - Physics – 01 – R

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G01R 31/08 (2006.01) G01R 19/165 (2006.01) G01R 31/12 (2006.01)

Patent

CA 2074358

A method and detector for monitoring electrical strikes along a power transmission distribution system are described. The method and detector identify the location within the transmission system where an insulator flashover event has occurred. The method includes sensing the magnetic field about the live transmission line(s) upstream and downstream from each transmission tower and providing signals representative of the upstream and downstream magnetic fields. These signals are then compared and a flashover event signal is provided whenever the signals representative of the magnetic fields differ about a tower. The event signal identifies the tower within the system on which the insulator flashover occurred. A detector corresponding to the method is also provided.

éthode et détecteur pour la surveillance des décharges électriques le long d'un réseau de transport d'énergie. La méthode et le détecteur identifient l'endroit du réseau de transport d'énergie où un arc par contournement d'isolateur s'est produit. La méthode comprend la détection du champ magnétique qui entoure les lignes de transmission sous tension en amont et en aval de chaque pylône de transmission et l'émission de signaux qui représentent les champs magnétiques en amont et en aval. Ces signaux sont ensuite comparés et un signal désignant un arc est fourni lorsque les signaux qui représentent les champs magnétiques d'un pylône sont différents. Le signal identifie le pylône du système où s'est produit l'amorçage d'arc. Un détecteur qui correspond à la méthode est aussi fourni.

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