Gas turbine system, combustor control device for a gas turbine, and combustor control method for a gas turbine

摘要

PROBLEM TO BE SOLVED: To certainly prevent an accidental fire of a combustor.;SOLUTION: A gas turbine system comprises: a gas turbine 10 which is equipped with a combustor 12 having a pilot nozzle 13, a first main nozzle 14, and a second main nozzle 15; and a combustor control device 11 which has a load interception detecting portion 16 for detecting the load interception of the gas turbine 10, a pilot nozzle flow rate control portion 17 for increasing the supply amount of premixed fuel of the pilot nozzle 13 on the basis of the detection of load interception; a first main nozzle flow rate control portion 18 for decreasing the supply amount of the premixed fuel to the first main nozzle 14 on the basis of the detection of the load interception, and a second main nozzle flow rate control portion 19 for decreasing the supply amount of the premixed fuel to the second main nozzle 15 on the basis of the detection of the load interception, and then further decreasing the supply amount after a predetermined time period has passed.;COPYRIGHT: (C)2014,JPO&INPIT