Patent ID: 8141369

Claim:
A method of controlling a hot-gas temperature of a hot gas in a stationary gas turbine, comprising: measuring a first temperature of an intake air upstream of a compressor of a gas turbine via a first temperature-measuring device; measuring the hot gas temperature at a turbine part outlet using a second temperature-measuring device; injecting a liquid into the intake air stream, wherein the liquid is injected into the intake air downstream of the first temperature-measuring device and upstream of an inlet to the compressor of the gas turbine; determining a humidity of the intake air upstream of the liquid injection via an air humidity device; compressing the intake air and injected liquid to form a compressed air stream; injecting a fuel into the compressed air stream; combusting the fuel and compressed air stream in a combustion chamber arranged downstream from the compressor to produce a hot gas that expands as it flows through a downstream turbine part; controlling the hot-gas temperature by a quantity of the fuel delivered, the controlling comprising: determining a second temperature of the air stream at the inlet of the compressor, determining a corrected hot gas temperature as a function of the second temperature, comparing the determined corrected hot gas temperature to an inputted desired value of hot gas temperature, and producing an output effective to control a shut-off member as a function of the compared corrected outlet temperatures, wherein the shut-off member controls the quantity of fuel delivered.