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:
Mar. 26, 2013
Filed:
Oct. 12, 2010
Edmund O. Schweitzer, Iii, Pullman, WA (US);
Veselin Skendzic, Pullman, WA (US);
Gabriel Benmouyal, Boucherville, CA;
Bruce A. Hall, Pullman, WA (US);
Rogerio Scharlach, San Ramon, CA (US);
Edmund O. Schweitzer, III, Pullman, WA (US);
Veselin Skendzic, Pullman, WA (US);
Gabriel Benmouyal, Boucherville, CA;
Bruce A. Hall, Pullman, WA (US);
Rogerio Scharlach, San Ramon, CA (US);
Schweitzer Engineering Laboratories Inc, Pullman, WA (US);
Abstract
A generator winding-to-ground fault detection system is disclosed that includes a signal injection source in electrical communication with a winding of an electric power generator via an injection transformer. The winding may be coupled to ground via a winding-to-ground path and the signal generation source may generate an injection signal capable of being injected to the winding using the injection transformer. The disclosed system may further include a protection module in communication with the signal injection source and the electric power generator configured to receive the injection signal and a signal relating to the current through the winding-to-ground path, and to determine the occurrence of a winding-to-ground fault condition based at least in part on the injection signal and the signal relating to the current through the winding-to-ground path.