Adjustment method for steam turbine control valve flows in thermal power plant

The present invention provides a method of regulating the flow of power plant steam turbine tone, comprising the steps of a step, carried out to optimize the test tone, the test data is determined, sequentially linear current valve lift curve required for load test, a high-profile flow gate characteristic test, determined for each high profile door pre-start the maximum valve stroke and the sequencing valve curve, sequence valve curve line inspection changes, determination regulating valve to the maximum flow position; step two, by calculating the swap gate flow curves of test data and analysis obtained the tone curve optimization flow. The present invention can effectively improve the flow characteristics of the tone of the turbine, generator load change and improve the primary frequency performance, improve the quality of regulation of the generator, high-profile, the turbine gate, the regulating valve operational safety and life, improve the economy of the unit.