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:
Nov. 27, 2018
Filed:
Jun. 26, 2009
Applicants:
Yongli LI, Tianjin, CN;
Botong LI, Tianjin, CN;
LI Chen, Tianjin, CN;
Bin Su, Beijing, CN;
Inventors:
Assignee:
ABB Research Ltd., Zurich, CH;
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/26 (2006.01); G01R 31/08 (2006.01); H02H 1/00 (2006.01);
U.S. Cl.
CPC ...
H02H 7/267 (2013.01); G01R 31/085 (2013.01); H02H 1/00 (2013.01);
Abstract
A method for identifying the type of faults occurred on a power line, characterized in that it comprises: calculating a fault point voltage on fault points based on terminal voltage and fault locations of the power line; adopting the fault point voltage corresponding to a maximum transition resistance as a setting value; comparing the fault point voltage on fault points with the setting value; and identifying the type of fault as a permanent type or a transient type based on the result of the comparison.