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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 power cable in the actual yaw bearing, resulting in a long shutdown of the unit for maintenance and reducing the life of the power cable of the unit

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

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Embodiment 1

[0031] figure 2 It is a method flowchart of an embodiment of the method for calibrating the yaw angle of the wind power generating set provided by the present invention. Calibration device (the executive body 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 yawing referred to in the present invention is that the unit is shut down, the yaw angle is 0°, and the power cable in the yaw bearing has no torsion. The state where the above three conditions cannot be satisfied at the same time is called the yaw state of the unit (even in the shutdown state, 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 unit. cause an impact, so in this embodiment, it is also considered as the yaw state).

[0033] Such as figure 2 As shown, the wind turbine yaw angle calibration method includes:

[0034] S210, monitor a plurality of test poi...

Embodiment 2

[0045] Figure 5 The method flowchart of another embodiment of the wind turbine yaw angle calibration method 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 wind turbine yaw angle calibration method includes the following steps:

[0046] S510, using a position sensor to monitor a plurality of test points on a plane circle vertically surrounding the central axis of rotation of the nacelle of the wind power generating set, the center of the plane circle being located on the central axis of rotation of the nacelle; The tower of the wind turbine is relatively stationary, and the position sensor is relatively stationary to the nacelle of the wind turbine, or the multiple test points are relatively stationary to the nacelle of the wind turbine, and the position sensor is relatively stationary to the tower of the wind turbine. The content of step S510 is similar to that of the a...

Embodiment 3

[0083] Figure 6 A schematic structural diagram of an embodiment of a wind turbine yaw angle calibration system provided by the present invention, which can be used to perform figure 2 The method steps of the shown embodiment, as Figure 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 a plurality of test points on a plane circle vertically surrounding the central axis of rotation of the nacelle of the wind power generating set through position sensors, and the center of the circle of the plane is located on the central axis of rotation of the nacelle; wherein, the plurality of test points and The tower of the wind turbine is relatively stationary, and the position sensor is relatively stationary to the nacelle of the wind turbine, or multiple test points are relatively stationary to the nacelle of the wind turbine, and the position sensor is relati...

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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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