Calibration method and system for yaw angles of wind generating set

A technology of a wind power generating set and a calibration method, which is applied in the direction of wind power generators, control of wind power motors, and wind power generation, and can solve problems such as inconsistent torsion angles, reduced service life of power cables of power sets, and long maintenance time of power sets, so as to reduce downtime and maintenance Time, life-prolonging effect

Active Publication Date: 2015-09-30
XINJIANG GOLDWIND SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The error generated by the above method of yaw angle detection will make the yaw angle of the unit inconsistent with the torsion angle of the

Method used

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  • Calibration method and system for yaw angles of wind generating set
  • Calibration method and system for yaw angles of wind generating set
  • Calibration method and system for yaw angles of wind generating set

Examples

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Example Embodiment

[0030] Example one

[0031] figure 2 It is a method flow chart of an embodiment of the method for calibrating the yaw angle of a wind turbine generator provided by the present invention. The execution subject of the method may be the yaw control system of the wind turbine generator or the yaw angle integrated in the yaw control system Calibration device (the execution subject will be referred to as "system" for short in the present invention).

[0032] It is explained here that the state when the unit is not yaw in the present invention refers to the state where the unit is stopped, the yaw angle is 0°, and the power cable in the yaw bearing is not twisted. The states that the above three conditions cannot be met at the same time are all called the yaw state of the crew (even if the yaw angle is not 0 or the power cable in the yaw bearing is twisted, it will be safe for the power cable of the crew. Causes an impact, so this embodiment also considers the yaw state).

[0033] Such a...

Example Embodiment

[0044] Example two

[0045] Figure 5 The method flowchart of another embodiment of the method for calibrating the yaw angle of the wind turbine generator provided by the present invention can be regarded as figure 2 A specific implementation of the illustrated embodiment. Such as Figure 5 As shown, the method for calibrating the yaw angle of the wind turbine generator includes the following steps:

[0046] S510. Monitoring multiple test points on a plane circle perpendicular to the center axis of rotation of the nacelle of the wind turbine generator through a position sensor, and the center of the plane circle is located on the center axis of rotation of the nacelle; The tower is relatively static, and the position sensor is relatively static with the nacelle of the wind turbine, or multiple test points are relatively static with the nacelle of the wind turbine, and the position sensor and the tower of the wind turbine are relatively static. The content of step S510 is similar ...

Example Embodiment

[0082] Example three

[0083] Image 6 A schematic structural diagram of an embodiment of the yaw angle calibration system for a wind turbine generator provided by the present invention, which can be used to implement figure 2 The method steps of the illustrated embodiment, such as Image 6 As shown, the wind turbine yaw angle calibration system includes: a monitoring module 610 and a calibration module 620.

[0084] The monitoring module 610 is used to monitor multiple test points on a plane circle perpendicular to the center axis of rotation of the nacelle of the wind turbine generator through a position sensor, and the center of the plane circle is located on the center axis of rotation of the nacelle; The tower of the wind turbine is relatively static, and the position sensor and the nacelle of the wind turbine are relatively static, or multiple test points are relatively static with the nacelle of the wind turbine, and the position sensor and the tower of the wind turbine are ...

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Abstract

The embodiment of the invention provides a calibration method and system for yaw angles of a wind generating set. The method includes the steps that a plurality of testing points on a plane circle vertical to a cabin rotation axle wire surrounding the wind generating set are monitored through a position sensor, and the circle center of the plane circle is located on the cabin rotation axle wire; in the yaw process of the wind generating set, according to the rotation angles, correspondingly represented when the testing points are monitored by the position sensor, of a cabin relative to a tower cylinder, measured yaw angles collected by the wind generating set at the same moment are calibrated, and the calibrated yaw angles are obtained. By means of the technical scheme, the yaw angles of the unit are controlled to be coincident with the torsion angle of a power cable in an actual yaw bearing, the halt maintenance time of the unit is further shortened, and the service life of the power cable of the unit is prolonged.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a method and system for calibrating the yaw angle of a wind power generating set. Background technique [0002] At present, the yaw system of a wind power generation unit (referred to as "unit") collects wind direction and wind speed through wind sensors (wind vane, anemometer), and performs weighted average and filtering on the wind direction and wind speed data, and then passes the programmable logic controller (Programmable Logic Controller, PLC) program logic judgment, drives the yaw motor to track the wind direction, and realizes yaw control. [0003] Usually, the yaw angle of the unit cabin is monitored by the position sensor to drive the position sensor to count the position of the shaft teeth of the yaw bearing gear, and the yaw angle is calculated by obtaining the measured number. Such as figure 1 Shown is a schematic diagram of a method for yaw angle detection in t...

Claims

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Application Information

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IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 李智峰韩世辉
Owner XINJIANG GOLDWIND SCI & TECH
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