METHOD AND DEVICE FOR INCREASING ACCURACY OF ADJUSTABLE-BLADE TURBINE BLADES ANGLE CONTROL Russian patent published in 2017 - IPC F03B15/06 F03B3/06 

FIELD: hydropower.

SUBSTANCE: invention relates to hydraulic power engineering and can be used in control systems of hydraulic plants for impeller blades angle correction by correcting the measured pressure signal. Method for correcting an adjustable-blade turbine impeller blades angle formed basing on signals from guiding device opening sensor 1 and a combinatory mechanism of pressure head sensor 2 involves measuring signals from blades angle sensor and generator active power sensor 5.1 and 5.2. As per signals from guiding device opening sensor and blades angle sensor 1 and 5.1 on the basis of the plant characteristic a reference power signal is generated, which is compared with the generator active power signal. If the comparison result is different from zero, the pressure head sensor signal is corrected, which comes to the combinatory mechanism for changing blades angle 2 until the generator active power is equal to the reference power.

EFFECT: invention is aimed at higher accuracy of setting the impeller blades angle, higher turbine efficiency and higher reliability of the control system.

2 cl, 4 dwg