Novel steam turbine valve control method

The invention provides a novel steam turbine valve control method, namely dexterous valve control, based on two existing valve control modes of a single valve and a sequence valve of a steam turbine. According to the scheme, simulation verification of a 600MW unit shows that the background throttling loss of the unit can be eliminated under a sequence valve control mode, the efficiency of the unit can be improved, meanwhile, the problem of large-amplitude high-frequency swing caused by poor flow characteristics of the valve can be avoided, the idle stroke phenomenon in the valve opening process and disturbance generated when the valve is fully closed are eliminated, and the service life of the unit is prolonged. The valve control linearity is improved, the unit load response characteristic can be improved, disturbance to a fuel oil resisting system can be reduced, and the reliability of an executing mechanism is improved. The control mode can realize undisturbed switching with a sequence valve control mode. 本