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. 17, 1996
Filed:
Feb. 15, 1994
William I Rowen, Schenectady, NY (US);
Jens Kure-Jensen, Schenectady, NY (US);
General Electric Co., Schenectady, NY (US);
Abstract
A method of operating a combined-cycle gas and steam turbine power generating system on a single shaft 16 uses as a feedback to the speed control or governor a signal 22 representing the total power output of the generator less the total output of the steam turbine 12, which is then correlated with the error signal between the actual and reference speeds to alter the fuel flow to the gas turbine. By compensating the measured generator output by subtracting a value 24 representative of the steam turbine output so that the compensated signal 26 represents the contribution of only the gas turbine 10 to the generator output, a constant settable droop speed control system may be used in a single-shaft combined-cycle steam turbine and the gas turbine system to compensate for variable heating fuel value and/or changing combustion efficiency in dry low NO.sub.x combustion systems.