METHOD FOR OPERATING A GAS TURBINE WITH SEQUENTIAL COMBUSTION AND A GAS TURBINE FOR THE PERFORMANCE OF THE SPECIFIED METHOD

摘要

1. The method of operation of a gas turbine (10) with sequential combustion (14, 15, 17, 19), while the gas turbine (10) contains a compressor (13), a first combustion chamber (14, 17) with the first chamber (14) combustion and the first burners (17), which receives compressed air from the compressor (13), the second combustion chamber (15, 19) proper with the second combustion chamber (15) and the second burners (19), which receives hot gas from the first chamber (14) , 17) a combustion with a predetermined temperature (T) at the inlet of the second combustion chamber, and a turbine (16) that receives hot gas from the second chamber (15, 19) of combustion, characterized in that the temperature (T) at the inlet of the second combustion chamber is lowered to operate the gas turbine (10) with the base load, and the temperature (T) at the inlet of the second combustion chamber is increased with decreasing load (RL) by gas turbine from base load to partial load. 2. A method according to claim 1, characterized in that diluting air is mixed with hot gases from the first combustion chamber (14, 17) to achieve a reduced temperature (T) at the inlet of the second combustion chamber. The method according to claim 2, characterized in that the mass flow rate of the dilution air is changed to achieve large changes in temperature (T) at the inlet of the second combustion chamber. The method according to claim 1, characterized in that the temperature at the outlet of the first combustion chamber (14, 17) or the temperature (T) at the inlet of the second combustion chamber, respectively, is controlled depending on the load (LS) on the gas turbine. The method according to claim 1, characterized in that the temperature at the outlet of the first combustion chamber (14, 17) or the temperature (T) at the inlet of the second combustion chamber, respectively, is controlled depending on the combustion pressure, in particular in