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:
Oct. 25, 2011
Filed:
May. 19, 2008
Ari Wahlroos, Vaasa, FI;
Janne Altonen, Toijala, FI;
Ari Wahlroos, Vaasa, FI;
Janne Altonen, Toijala, FI;
ABB Technology AG, Zurich, CH;
Abstract
A method and apparatus for determining a location of a phase-to-earth fault on a three-phase electric line () of an electric network, comprising determining an equivalent load distance curve of the electric line () representing a voltage drop along the electric line scaled by an equivalent load distance of the electric line, determining a fault distance line indicating an estimate of a distance of the fault (F) from the measuring point () in relation to the equivalent load distance, determining a distance at which the equivalent load distance curve and the fault distance line intersect when superimposed, and selecting the determined distance as the distance between the measuring point () and the point of fault (F).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile