Torque control method for high-capacity wind turbine generator and related products

Abstract

The invention provides a torque control method for a high-capacity wind turbine generator and a related product, which can at least partially solve the problem of following lag caused by the increase of the inertia of an existing fan impeller. The torque control method for the high-capacity wind turbine generator comprises the steps that a generator torque rapid following control equation is established, and a rapid following control strategy is established based on the generator torque rapid following control equation, wherein the generator torque rapid following control equation comprises a pneumatic torque estimated value as a variable; measuring the wind speed and performing statistics to form wind speed characteristics including wind speed fluctuation amplitude and wind speed fluctuation frequency; measuring the torque of the generator, the rotating speed of the generator and the inertia moment of a fan transmission chain, calculating the measurement results, and combining the obtained calculation results with the wind speed characteristics to obtain an estimated value of the pneumatic torque; and feeding back the pneumatic torque estimation value to the quick following control strategy in real time, so that the quick following control strategy is adjusted in real time according to the change of the pneumatic torque estimation value.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a torque control method for large-capacity wind turbines and related products. Background technique [0002] Challenges and opportunities coexist in the wind power industry. The policy of carbon neutrality and carbon peaking has determined the development prospects of the wind power industry. Wind power generation represented by new energy power generation is developing rapidly. The innovation of wind power control technology is imperative to reduce the cost of wind power generation units. very important. For units that have been put into operation, optimizing unit operation control technology to increase power generation is an effective way to reduce the cost of electricity. [0003] Natural wind has random fluctuation characteristics, resulting in fluctuations in wind power. In the variable speed section, that is, the maximum power tracking section, t...

AI Technical Summary

Problems solved by technology

However, the current wind turbine control strategy cannot effectively control the wind speed fluctuation response frequency band based on the analysis of wind characteristics, and cannot suppress unnecessary power fluctuations.

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