Estimation of health parameters in industrial gas turbines

A method for operating a gas turbine and determining a deviation value of a health parameter of at least one component of the gas turbine, the method comprising:

• operating the gas turbine based on control parameters calculated by a control unit, wherein the control parameters are calculated based on desired input values received from an input unit,
• monitoring by the control unit a health of the component of the gas turbine by:
• measuring with sensors a pressure value and a temperature value at a measuring point of the component,
• determining a corrected pressure value based on a predetermined pressure correction factor of the component applied to the measured pressure value,
• determining a corrected temperature value based on a predetermined temperature correction factor of the component applied to the measured temperature value,
• determining an estimated actual value of the health parameter of the at least one component at least based on the corrected pressure value and the corrected temperature value,
• providing a nominal value of the health parameter of the at least one component which is predicted based on at least one predetermined input parameter,
• determining a deviation value by comparing the estimated actual value of the health parameter and the nominal value of the health parameter, and
• conducting diagnostic analysis and prognostic analysis based on the deviation value to estimate a dynamic behavior of gas turbine health under steady state and transient operating conditions for operation of the gas turbine.