Ice load operation optimization control system and method used in wind turbine generator system (WTGS)

Abstract

The invention discloses an ice load operation optimization control system and method used in a wind turbine generator system (WTGS). The system comprises a meteorological condition detection module, an icing risk level calculation module and an ice load operation optimization control module, wherein meteorological condition signals detected by the meteorological condition detection module are input into the icing risk level calculation module; icing risk level signals calculated by the icing risk level calculation module according to the meteorological condition signals are input into the ice load operation optimization control module; and the ice load operation optimization control module outputs variable-pitch control signals and torque control signals according to the icing risk level signals. By adopting the ice load operation optimization control system and method used in the WTGS, the WTGS can automatically detect and judge whether blades are iced and detect and judge the icing risk level, and the control strategy during the ice load operation process can be optimized; and different control schemes are formulated according to the icing degree of the blades, thus preventing great fatigue load caused by ice load operation and damage on the blades, improving the safety property of the WTGS, and ensuring the design life of a fan.

Description

technical field [0001] The invention relates to a system and method for optimizing the ice load operation of a wind power generating set. Mainly used in large-scale wind turbines, it can improve the operating conditions of the wind farms in icing areas, reduce the operating load of the whole machine during icing, improve the survivability of the wind turbines in harsh environments, and ensure the designed service life of the wind turbines. Background technique [0002] Most of the wind farms in my country have icing phenomenon in winter, especially in the Northeast, North China and Northwest regions where wind resources are relatively abundant. During the operation of wind turbines, the blades often freeze, and ice-loaded operation occurs. Icing on the blades is usually concentrated at the leading edge of the airfoil, resulting in changes in the geometry of the airfoil, reduced performance of the blades, and reduced lift of the impeller. When the ice layer becomes thicker a...

AI Technical Summary

Problems solved by technology

When the ice layer becomes thicker and thicker, the weight of the impeller will be unbalanced, resulting in excessive fatigue load of the whole machine, lower power generation efficiency, and even blade breakage, seriously affecting the performance and service life of the wind turbine.

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