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. 13, 2021
Filed:
Apr. 20, 2017
Abb Power Grids Switzerland Ag, Baden, CH;
Obbalareddi Demudu Naidu, Bengaluru, IN;
Neethu George, Kottayam, IN;
Sachin Srivastava, Bengaluru, IN;
ABB Power Grids Switzerland AG, Baden, CH;
Abstract
The invention provides an Intelligent Electronic Device (IED) and a method for locating a fault in a power transmission line with the IED. The method comprises measuring arrival times of a first, second and third peak of a travelling wave, using measurements obtained with one or more measurement equipment connected with the power transmission line. The method further comprises generating two or more initial estimates for the location of the fault, estimating time of initiation of the travelling wave, and estimating an arrival time of the third peak. The estimated arrival time of the third peak is compared with the measured arrival time of the third peak, to select an initial estimate of the two or more initial estimates as the location of the fault.