GAS TURBINE PLANT CONTROL METHOD Russian patent published in 2011 - IPC F02C9/00 

FIELD: engines and pumps.

SUBSTANCE: invention can be used in electronic hydro mechanical automatic control systems (ACS) of gas turbine plants (GTP) of various purpose. In addition, there measured is rotation frequency of high pressure rotor; depending on air temperature at GTP inlet there formed is minimum allowable values of high pressure rotor rotation frequency. If the measured high pressure rotor rotation frequency becomes smaller than minimum allowable value, there formed is "Extreme low rotation frequency of high pressure rotor" signal to GTP operator, and reduction of fuel flow rate to GTP combustion chamber is stopped. Rotation frequency of low pressure rotor is measured, compared to maximum allowable value determined with calculation-experimental method. If the measured rotation frequency of low pressure rotor becomes more than maximum allowable value, there shaped is "Maximum high rotation frequency of low pressure rotor" signal to GTP operator and fuel flow rate to GTP combustion chamber is decreased until rotation frequency of low pressure rotor becomes lower than maximum allowable value. Air pressure is measured after high pressure compressor, compared to maximum allowable value determined with calculation-experimental method. If the measured air pressure after high pressure compressor becomes bigger than maximum allowable value, there shaped is "Maximum high pressure after high pressure compressor" signal to GTP operator and fuel flow rate to GTP combustion chamber is decreased until air pressure after high pressure compressor becomes lower than maximum allowable value.

EFFECT: improving operation quality of ACS and reliability and operation safety of GTP.

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