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

FIELD: engines and pumps.

SUBSTANCE: invention can be used in electronic and hydromechanical automatic control systems (ACS) of aircraft gas turbine engines (GTE) and gas turbine plants (GTP) of various purpose. In addition, LPC (low pressure compressor) rotor rotation frequency is measured as per air temperature at GTP inlet; and as per LPC rotor rotation frequency as per the pre-set relationship determined by calculation-experimental method the HPC inlet air temperature is calculated; as per HPC inlet air temperature by means of certain relationship there formed is the second value of corrected HPC rotation frequency; as per the second corrected HPC rotation frequency by means of certain relationship the second specified position of inlet guide vanes of HPC is formed; then it is compared to measured position of inlet guide vanes of HPC; as per error value between the second specified value and measured value of position of inlet guide vanes of HPC the second control impact on actuator of inlet guide vanes of HPC is formed and actuator of inlet guide vanes of HPC is controlled as per it; when it is not possible due to failures in ACS to form the second control impact, control of actuator of HPC inlet guide vanes is performed as per the first control impact.

EFFECT: higher economy and operating reliability of GTP owing to increased ACS operating efficiency, which provides optimum control of air flow rate through HPC.

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