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:
Apr. 08, 2025
Filed:
Mar. 22, 2022
Applicant:
Hitachi Energy Ltd, Zürich, CH;
Inventors:
Neethu George, Karnataka, IN;
Od Naidu, Karnataka, IN;
Assignee:
HITACHI ENERGY LTD, Zurich, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 7/26 (2006.01); G01R 27/02 (2006.01); G01R 31/08 (2020.01); H02H 1/00 (2006.01);
U.S. Cl.
CPC ...
H02H 7/26 (2013.01); G01R 27/02 (2013.01); G01R 31/08 (2013.01); G01R 31/085 (2013.01); G01R 31/086 (2013.01); H02H 1/0007 (2013.01);
Abstract
A device is provided that is suitable for use with a double-circuit power transmission system having a first line and a second line. The device comprises an interface to receive a current measurement for the second line. The device comprises at least one processing module operative to estimate a first zero-sequence current in the first line based on a second zero-sequence current, and determine an apparent impedance based on the estimated first zero-sequence current.