Method for determining at least one firing temperature for the control of a gas turbine and gas turbine for carrying out the method

摘要

The method involves drawing air compressed at a compressor (12) to cool a gas turbine (15). The air is fed to the turbine via an external cooling duct (17) and a control valve (V) arranged in the cooling duct. Temperatures and pressures of working mediums are measured in different positions of the gas turbine. Firing temperature is derived from the measured temperatures and pressures. Cooling air mass flow is determined via the external cooling duct. The cooling air mass flow is considered when deriving the firing temperature. An independent claim is also included for a gas turbine.