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Automatic calibration method for blade position of pitch system of wind turbine generator

A technology of automatic calibration and pitch system, applied in wind power generation, wind power engine, machine/engine, etc.

Inactive Publication Date: 2014-12-10
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for automatic calibration of the blade position of the wind turbine pitch system to solve the problem of being able to calibrate the pitch angle when the value of the pitch angle in the encoder may be incorrect

Method used

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  • Automatic calibration method for blade position of pitch system of wind turbine generator
  • Automatic calibration method for blade position of pitch system of wind turbine generator
  • Automatic calibration method for blade position of pitch system of wind turbine generator

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Embodiment Construction

[0019] The present invention will be described in further detail below with reference to the accompanying drawings.

[0020] A set angle value is set, and an inductive proximity switch is installed at the set angle value of the wheel hub casting.

[0021] The invention provides a method for automatically calibrating blade position of a pitch system of a wind turbine. The steps are: controlling the rotation of the blade, when the output level of the inductive proximity switch changes, measuring the pitch angle at this time, and replacing the set angle value The pitch angle at this time.

[0022] Before performing the steps of the automatic calibration method, the blades are opened, and when the output level of the induction proximity switch changes, if the deviation between the current pitch angle and the set angle value is greater than the set error value, the steps of the automatic calibration method are executed. .

[0023] After performing the steps of the automatic calib...

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Abstract

The invention relates to an automatic calibration method for a blade position of a pitch system of a wind turbine generator. A set angle value is set, and an induction proximity switch is installed at the set angle value position of a hub casting of the pitch system. The automatic calibration method comprises the steps that a blade is controlled to rotate, and when the electric level output by the induction proximity switch changes, the pitch angle is measured, and the measured pitch angle is replaced by the set angle value. Automatic calibration of the blade position is achieved through the related control logic on the basis of adding of simple hardware, and accuracy and precision of the blade angle position are guaranteed. The blade works at the true optimal pitch angle, the fatigue load of operating of a draught fan is reduced, and operating reliability and generating efficiency of the draught fan are improved.

Description

technical field [0001] The invention relates to an automatic calibration method for blade positions of a wind turbine pitch system, belonging to the field of wind turbine pitch systems. Background technique [0002] With the development of wind power technology, the single-unit capacity of wind turbines has gradually increased. At the same time, in order to ensure better capture of wind energy by wind turbines and stable output of power, the vast majority of modern large-scale wind turbines are variable-pitch wind turbines. The pitch system is one of the core systems of the wind turbine, which ensures the safe and efficient operation of the wind turbine. [0003] Pitch control is the core part of the fan control algorithm. Its main function is to output the optimal pitch angle position to the pitch system according to the current state of the fan, so as to ensure that the blades are always in the optimal position, so as to improve the power generation efficiency and reduce ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 高亚春袁金库卢仁宝程林志史航苏中莹张小伟
Owner STATE GRID CORP OF CHINA