METHOD TO CONTROL GAS TURBINE PLANT STATE Russian patent published in 2010 - IPC G01M15/14 

FIELD: engines and pumps.

SUBSTANCE: proposed invention can be used in electronic ACS of gas turbine plant (GTP), gas compressor plant (GCP) and gas turbine power stations (GTPS). In GTP acceptance tests at test bench, dependence of gas temperature behind the turbine on its output shaft power is determined at various temperatures of air at turbine inlet. Obtained values are entered in GTP record. In operation of GTP, air temperature at GTP compressor inlet, as well as gas temperature behind the turbine, output shaft rpm and torque are measured in and for preset time intervals. Output shaft power is calculated as the product of measured rpm and torque. Design power is compared with the first preset value determined by experimental procedure and corrected in operation. In case design power exceeds the first preset value and there is no air bleed due to GTP compressor, averaged GTP compressor inlet air, gas temperature behind GTP compressor and design output shaft power are calculated by the second preset dependence using the data entered in GTP record. Recorded gas temperature behind GTP turbine is calculated to be compared with the averaged value. Obtained difference is compared with the second and third preset values of each GTP type. In case the difference exceeds the second preset value but is smaller than third value, signal "Fouled engine flow section" is generated for operator. In the latter case, at the first opportunity, flush the GTP flow section. In case said difference exceeds the third preset value, signal "Maximum tolerable fouling of engine flow section" is generated for GTP operator. GTP operation is inadmissible. Flush GTP flow section. For this, cut off GTP and flush its flow section.

EFFECT: higher quality control over GTP state and GTP reliability.

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