CONTROL METHOD OF GAS TURBINE PLANT Russian patent published in 2011 - IPC F04D27/02 

FIELD: engines and pumps.

SUBSTANCE: in addition, in all GTP operating modes from idle mode to maximum mode the air pressure is measured after GTP compressor, relative change and relative change speed of air pressure after compressor is calculated, relative pressure change is compared to the first pre-set value determined for each GTP type experimentally, and relative speed is compared to the second pre-set value determined for each GTP type experimentally; if relative pressure change is more than the first pre-set value, and relative speed is more than the second pre-set value, air bleed valves are opened from behind the intermediate stages of GTP compressor and due to GTP compressor and ignition unit is actuated for the pre-set time; if after that, relative pressure change becomes less than the first pre-set value, and relative speed becomes less than the second pre-set value, GTP is operated in compliance with standard control programs; if relative pressure change remains more than the first pre-set value and relative speed remain more than the second pre-set value during the pre-set time determined by calculation experimental method, emergency shutdown of GTP is performed.

EFFECT: higher GTP operating reliability owing to performing the actions allowing to take GTP compressor from surging without fuel cut-off.

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