GAS TURBINE, GAS TURBINE CONTROL METHOD, AND GAS TURBINE OPERATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a gas turbine and the like capable of individually regulating temperatures of compressed air supplied to a combustor and a turbine, respectively, and suppressing degradation in operation efficiency.SOLUTION: A gas turbine 10 includes a compressor 11, a combustor 12 and a turbine 13. The gas turbine 10 includes: a pressure booster 40 causing part of the compressed air compressed by the compressor 11 to flow in the pressure booster 40 and boosting a pressure of the inflow compressed air; a combustor cooling line 49 cooling the combustor 12 by the pressure-boosted compressed air; a temperature regulation line 48 regulating a temperature of a static member such as a blade ring of the turbine 13 by the pressure-boosted compressed air; a combustor supply line 45 circulating the compressed air from the pressure booster 40 to the combustor cooling line 49; a turbine supply line 44 circulating the compressed air from the pressure booster 40 to the temperature regulation line 48; a heater 62 provided in the turbine supply line 44, and heating the compressed air; and a control device 50 that can control the heater 62.