Individual pitch control method and device for inhibiting loading of wind generation set

Abstract

The invention discloses an individual pitch control method and device for inhibiting loading of a wind generation set. The method comprises the steps of generating a unified pitch angle used for limiting the output power of the wind generation set at the high wind speed according to rotating speeds of impellers; generating first deviation pitch angles used for inhibiting balanced loading of blades according to blade root loading measured values obtained after phase compensation; generating second deviation pitch angles used for inhibiting unbalanced loading of hubs according to the blade root loading measured values; and calculating a final pitch angle according to the unified pitch angle, the first deviation pitch angles and the second deviation pitch angles. According to the individual pitch control method and device for inhibiting loading of the wind generation set, the final pitch angle is calculated according to the unified pitch angle, the first deviation pitch angles and the second deviation pitch angles; meanwhile, balanced loading and unbalanced loading of the wind generation set are inhibited; and thus reliability of the wind generation set is improved, and the service life of the wind generation set is prolonged.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an independent pitch control method and device for suppressing loads of wind turbines. Background technique [0002] Wind power generation is currently one of the fastest-growing, most potential, and large-scale application of renewable energy generation methods. The core component of the wind power generation system is the wind turbine. In practical applications, wind turbines are affected by factors such as random wind, wind shear, and tower shadow effects. In addition, their large-scale development will inevitably lead to the characteristics of large flexibility and small damping of blades, towers, and drive shafts, resulting in wind turbines. The ever-increasing and complex dynamic loads they are subjected to reduce the service life of wind turbines. [0003] In response to this problem, the existing technology uses an independent pitch control method to reduc...

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Problems solved by technology

However, most of the independent pitch control methods proposed at home and abroad do not consider this problem, so it is

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