Method for dynamically biasing anti-surge curve of turbine compressor

The invention discloses a method for dynamically biasing an anti-surge curve of a turbine compressor. The method includes setting a surge curve of the turbine compressor, the anti-surge curve and an anti-surge early warning curve in an anti-surge controller; acquiring operating condition points A1 and A1' of the turbine compressor; judging whether the A1 is positioned above the anti-surge early warning curve L3 or not, and continuing acquiring of the A1 is positioned above the anti-surge early warning curve L3; adopting the A1' as an operating condition point A1 of a next cycle if the first A1 is not positioned above the anti-surge early warning curve L3, and continuing acquiring; judging whether an operating condition is far away from the anti-surge curve or not; continuing acquiring if the operating condition is far away from the anti-surge curve; and comparing time T with preset time judgment values T1 and T2 if the operating condition is not far away from the anti-surge curve. The anti-surge curve is dynamically biased so as to move opposite to the operating condition points on the basis of the movement speeds of the operating condition points, the operating condition points of the turbine compressor are timely, preliminarily and accurately adjusted and controlled by the anti-surge controller, accordingly, the operating condition points are prevented from entering a surge area, potential safety hazards of running of the turbine compressor are effectively eliminated, and normal operation of the turbine compressor and a production device is guaranteed.