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:
Jul. 11, 2017
Filed:
Jun. 23, 2011
Patrice Juge, Marcellaz Albanais, FR;
Guillaume Granelli, Barberaz, FR;
Patrice Juge, Marcellaz Albanais, FR;
Guillaume Granelli, Barberaz, FR;
ALSTOM TECHNOLOGY LTD, Baden, CH;
Abstract
A method and a device for locating internal arcing that occurs in a compartment (CP) of a gas-insulated line (L), each compartment being provided with at least one pressure sensor (P). The method comprises: triggering pressure measurements in a compartment as soon as the difference between the currents that flow through two current toroids (TC) around two adjacent compartments exceeds a threshold value indicating the occurrence of internal arcing in the compartment; calculating a period Δt that separates the time at which the pressure detector began to detect a pressure variation and the time at which the internal arcing occurred; and calculating a distance d that separates the place at which the internal arc is formed from the position of the pressure sensor using the equation d=V/Δt in which V is the speed of sound in the gas.