METHOD AND SYSTEM FOR GAS TURBINE PART-LOAD OPERATING CONDITION

摘要

PROBLEM TO BE SOLVED: To provide a method and system for operating a gas turbine system 100 having a compressor 110, a combustor 120 and a turbine 130 under partial load.;SOLUTION: The method and system may include steps of lowering a fuel flow rate to the combustor 120, extracting air from the compressor 110 so as to lower an air flow rate to the combustor 120 and returning the extracted air to the turbine 130 or a component of the gas turbine system 100 other than the combustor 120. Extracting air from the compressor 110 raises a combustion temperature in the combustor 120. Raising the combustion temperature maintains a combustion exhaust below a predetermined level, maintains stable combustion and increases turbine turndown values.;COPYRIGHT: (C)2009,JPO&INPIT