Lean blowout Auslöschschutz by controlling the nozzle-equivalence ratios.

摘要

A method and system is disclosed for controlling a combustor of a gas turbine based on the equivalence ratio of the fuel nozzles. The equivalence ratio of at least one fuel nozzle (12) of the combustion chamber is measured, wherein the combustion chamber has at least one fuel nozzle (12) which is arranged in at least one combustion chamber tube (10). The measured equivalence ratio is compared to a lean blowout threshold. The fuel flow from the at least one nozzle (12) is modified, thereby adjusting the equivalence ratio to prevent the lean blowout.