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:
Jun. 10, 2025
Filed:
Aug. 11, 2020
Applicants:
Abb Schweiz Ag, Baden, CH;
Hitachi Energy Ltd, Zürich, CH;
Assignees:
ABB Schweiz AG, Baden, CH;
HITACHI ENERGY LTD, Zürich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/08 (2020.01); G01R 25/00 (2006.01); H02H 1/00 (2006.01); H02H 7/22 (2006.01);
U.S. Cl.
CPC ...
G01R 31/085 (2013.01); G01R 25/005 (2013.01); H02H 1/0007 (2013.01); H02H 7/226 (2013.01);
Abstract
Methods for determining a line fault of a power system. The methods include obtaining sampled values of voltages and currents of phases of a power line in the power system, determining a phase compensation voltage of a first phase and an interphase compensation voltage of an interphase loop between a second phase and a third phase, and detecting the line fault in the first phase and/or the interphase loop by comparing the phase compensation voltage and the interphase compensation voltage.