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:
Dec. 27, 2005
Filed:
Feb. 09, 2004
Gregory E. Cooper, Ballston Spa, NY (US);
James H. Moore, Schenectady, NY (US);
Jatila Ranasinghe, Niskayuna, NY (US);
Gregory E. Cooper, Ballston Spa, NY (US);
James H. Moore, Schenectady, NY (US);
Jatila Ranasinghe, Niskayuna, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A variable loading rate method of starting a plurality of gas turbines (GT, GT) used in a combined cycle power plant for generating electricity. A first gas turbine is started and allowed to operate at a minimum load condition. The turbine is maintained at this load level while a second gas turbine is started brought up to its minimum load condition. Start-up of a steam turbine (ST) to which the gas turbines are operationally coupled is initiated while both gas turbines are maintained at their minimum load conditions. The load on both gas turbines is then increased to a predetermined level, which is greater than their minimum load levels, once operating temperatures within the steam turbine reach predetermined levels. Subsequently, both gas turbines are loaded as function of the load on the a steam turbine at to which the gas turbines are coupled. This variable loading rate starting sequence lowers the amount of NOproduced during start-up of the turbines and reduces the occurrence of a visible yellow plume at a power generating plant.