The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2012
Filed:
May. 18, 2006
Daniel Fournier, Montréal, CA;
Bruno Cantin, Sainte-Julie, CA;
Jean-marc Bourgeois, Longueuil, CA;
François Léonard, Montréal, CA;
Yvan Roy, Beloeil, CA;
Daniel Fournier, Montréal, CA;
Bruno Cantin, Sainte-Julie, CA;
Jean-Marc Bourgeois, Longueuil, CA;
François Léonard, Montréal, CA;
Yvan Roy, Beloeil, CA;
Hydro-Québec, Montreal QC, CA;
Abstract
In order to detect, localize and interpret a partial discharge occurring in a partial discharge site along an electrical equipment, two measurement probes and a synchronization probe are installed along the electrical equipment. The measurement probes detect pulses travelling in the electrical equipment while the synchronization probe detects a phase angle in the electrical equipment and is usable for calibration purposes. A control unit receives the signals sensed by the probes and conditions them. Digital processing applied on the conditioned signals, involving their correlation, a time-frequency distribution and a form factor estimation, allows establishing a diagnosis indicating a detection of a partial discharge and its localization along the electrical equipment. A wideband magnetic probe may be provided for detecting the pulses traveling in the electrical equipment.