METHOD OF CONTROL OVER GAS TURBINE UNIT Russian patent published in 2011 - IPC F02C9/00 

FIELD: engines and pumps.

SUBSTANCE: proposed invention may be used in electronic ACS of gas turbine units to drive electric generators of gas turbine electric power stations and gas transfer units. Additionally, on terminating fuel feed into combustion chamber, turbine rpm is analysed. In case rpm increase rate is lower than preset one defined experimentally, ignition system is switched over to preset interval. If, thereafter, turbine rpm falls below tolerable value and rpm decrease rate is lower than second preset value defined experimentally, and turbo compressor rpm exceeds third preset value, amount of fuel fed into combustion chamber corresponds to that of ignition to analyse gas temperature behind compressor turbine. With gas temperature increase exceeding the fourth preset value defined experimentally, fuel feed into combustion chamber is increased at time moment preceding fuel feed termination unless fuel flow equals that before fuel feed termination. In case gas temperature does not increase during preset period after resumption of fuel feed into combustion chamber, fuel feed into combustion chamber is cut off to shut down gas turbine unit.

EFFECT: higher efficiency of electric power station thanks to higher quality of ACS operation.

1 dwg