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. 22, 2016
Filed:
Jul. 26, 2013
Alstom Technology Ltd, Baden, CH;
Carsten Meinecke, Karlsruhe, DE;
ALSTOM Technology Ltd, Baden, CH;
Abstract
The present invention relates to an on-load tap changer control method for a power excitation chain. The chain includes a generator, a step-up transformer equipped with an on-load tap changer and connected on the one hand to the output of the generator and on the other hand to a transmission bus, and an excitation control system with a generator automatic voltage regulator (AVRG) and one excitation limiter (OELG, UELG). The method monitors the excitation conditions of the generator, activates the one excitation limiter (OELG, UELG) when the monitored excitation conditions are outside a predefined range, and temporarily inhibits the change of step of the on-load tape changer.