OPERATION OF A GAS TURBINE COMPRISING AN INTERPOLATED OPERATING CURVE DEVIATION

摘要

The invention relates to an operating method for a gas turbine (1) by partial-load operation, comprising the following steps: setting of a power setpoint value (LS) for a predefined temperature value (T0); determining the two operating curves (FL) as a function of temperature (T) according to the power (L) of the gas turbine (1), wherein the power setpoint value (LS) is located between said operating curves (FL); determining the difference in power (LU) of said two operating curves (FL) at the substantially constant predetermined temperature value (T0); determining a power deviation (LA) from the predetermined power setpoint value (LS) of one of the two operating curves (FL) at the substantially constant predetermined temperature value (T0); calculating an interpolated operating curve deviation (IFA) on the basis of the difference in power (LU) and the power deviation (LA), wherein the temperature (T) is a turbine outlet temperature (ATK) or a computationally determined turbine inlet temperature.