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:
Sep. 11, 2018
Filed:
Mar. 30, 2015
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventors:
Assignee:
ABB Schweiz AG, Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/00 (2006.01); H02H 3/28 (2006.01); H02H 7/26 (2006.01); G01R 31/08 (2006.01);
U.S. Cl.
CPC ...
H02H 3/28 (2013.01); H02H 7/262 (2013.01); H02H 7/263 (2013.01); H02H 7/265 (2013.01); G01R 31/08 (2013.01); G01R 31/085 (2013.01);
Abstract
A mechanism for travelling wave protection of a transmission line and a method for acquiring information of both voltage and current polarities from two ends of a transmission line. The method includes comparing the voltage and current polarities of both ends of the transmission line to each other. The method also includes making a trip decision based on the comparison.