Wind turbine pitch angle calibration method and calibration device

Abstract

The invention provides a variable-pitch angle calibration method and device for a wind generating set. The variable-pitch angle calibration method for the wind generating set comprises the steps thatin the operating state, the wind generating set is locked for yaw processing; in the locked yaw processing state, blades of the wind generating set are adjusted to a preset angle in a variable-pitch mode from the current zero-degree position stored in a master controller; in the process of adjusting the blades to the preset angle in the variable-pitch mode, the maximum power value of the wind generating set is determined; and according to the maximum power value, the blade pitch angle corresponding to the maximum power value is determined, and the zero-degree blade pitch angle stored in the master controller is set to the blade pitch angle corresponding to the maximum power value. By adoption of the variable-pitch angle calibration method and device for the wind generating set, the calibration accuracy is improved, the calibration process is completed automatically without halts, and the calibration effect can better meet the maximum power tracking requirement of the wind generating set.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method and a calibration device for calibrating the pitch angle of a wind power generating set. Background technique [0002] The pitch system of the wind turbine is a device for adjusting the blades of the wind turbine. The pitch system can achieve maximum power tracking, aerodynamic braking, and stabilize the generator speed of the wind turbine. Generally speaking, the zero scale position is marked on the hub, and the pitch system controls the angle of the blade through the blade angle collected by the encoder, so as to realize the functions of maximum power tracking, constant speed, and shutting down the propeller. In the whole process, it is necessary to calculate the corresponding angle of the blade according to the zero scale position of the blade as a reference value. Therefore, the zero-scale position of the blade is very important. Before the wind turbin...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a pitch angle calibration method and a calibration device for a wind power generating set, which are used to solve the problems in the prior art that cannot be automatically calibrated and the calibration accuracy is low

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