Method and device for adjusting position of minimum pitch angle

Abstract

The invention provides a method and device for adjusting the position of a minimum pitch angle of blades of a wind turbine generator. The method comprises the following steps of obtaining the output power when the wind turbine generator runs at the minimum pitch angle at a predetermined wind speed, wherein the predetermined wind speed is lower than a rated wind speed enabling the wind turbine generator to normally run; and when the output power is smaller than the optimal output power that the wind turbine generator runs at the minimum pitch angle at the predetermined wind speed, and adjustingthe position of the minimum pitch angle in a preset range, so as to enable the output power to approach or be equal to the optimal output power. Through the adoption of the method and the device disclosed by the invention, the error of the position of the minimum pitch angle caused by the processing, mounting and debugging of the wind turbine generators can be effectively eliminated, and the method is convenient for subsequent blade changing operation of the wind turbine generator to provide an accurate blade changing standard.

Description

technical field [0001] The present application relates to the technical field of wind power generation, and in particular to a method and device for adjusting the position of the minimum pitch angle of blades of a wind power generating set. Background technique [0002] Usually, the position of the zero scale line of the minimum pitch angle of the blade of the wind turbine is manually determined (for example, the position of the minimum pitch angle is marked in the impeller according to the position of the hub hole of the blade to be installed), thus, In the actual processing and installation process of the wind turbine, the processing error, installation error and zero scale line position error of the blade will cause an error between the marked position of the minimum pitch angle and the real position of the minimum pitch angle. In addition, during the power-on commissioning process of the wind turbine, manually adjust the blade to the marked position of the minimum pitch ...

AI Technical Summary

Problems solved by technology

[0002] Usually, the position of the zero scale line of the minimum pitch angle of the blade of the wind turbine is manually determined (for example, the position of the minimum pitch angle is marked in the impeller according to the position of the hub hole of the blade to be installed), thus, In the actual processing and installation process of wind turbines, the processing error, installation error and zero scale position error of the blade will cause an error between the marked position of the minimum pitch angle and the real position of the minimum pitch angle

In addition, during the power-on commissioning process of the wind turbine, manually adjust the blade to the marked position of the minimum pitch angle (for example, align the position of the zero scale line marked on the blade with the corresponding zero scale line marked in the hub to be installed position alignment) can also cause an error between the marked position of the minimum pitch angle and the true position of the minimum pitch angle

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