Combustor blowout recovery method and system

A method is disclosed for controlling gas turbine operation in response to lean blowout of a combustion can (14,15). The gas turbine (16) comprises a pair of combustion cans (14,15). The method includes sensing that a first combustion can (14) is extinguished during a full load operation of the gas...

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Bibliographische Detailangaben
Hauptverfasser:	Simons, Derrick Walter, Narra, Venkat, Romig, Bryan Wesley
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION APPARATUS COMBUSTION ENGINES COMBUSTION PROCESSES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS GAS-TURBINE PLANTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	A method is disclosed for controlling gas turbine operation in response to lean blowout of a combustion can (14,15). The gas turbine (16) comprises a pair of combustion cans (14,15). The method includes sensing that a first combustion can (14) is extinguished during a full load operation of the gas turbine (16), adjusting a fuel ratio between the fuel nozzles in each can (14,15), delivering a richer fuel mixture to the fuel nozzles nearest to the cross-fire tubes (11), generating a cross-fire from the second combustion can (15) to the first combustion can (14), detecting a recovery of the turbine load, and adjusting the fuel ratio to the normal balanced fuel distribution between the fuel nozzles in each can (14,15).