Yaw error analysis method of wind turbine

A technology for wind turbines and yaw errors, which is applied to wind turbines, control of wind turbines, and wind power generation. Engineering significance, the effect of precise operation yaw error

Active Publication Date: 2018-11-16
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in reality, the wind direction is not constant, and it is impossible for the crew to change the angle all the time. Therefore, even if the crew has no yaw error, there is still the possibility of wrong wind angle, which will cause inaccurate judgment of yaw error. situation arises

Method used

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  • Yaw error analysis method of wind turbine
  • Yaw error analysis method of wind turbine
  • Yaw error analysis method of wind turbine

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Experimental program
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Embodiment 1

[0042] Such as figure 1 As shown, firstly, through the unit SCADA database, the historical operation data parameters of the unit are extracted, including: staggered wind angle, wind speed, generator active power, annual average wind speed of the unit, and unit operating status identification code, where the unit operating status identification code includes engine speed and Data such as pitch angle are used to judge the operating status of the unit. The preset time length is 1 year, and the time interval is 1 minute as a time node.

[0043] Determine the normal grid-connected power generation time of the unit through the unit operating status identification code. Take the cross-wind angle interval to be analyzed as (-15°, +15°), Deg 0is 5°, the intervals are (-180°, -15°), (-15°, -10°), (-10°, -5°), (-5°, 0°), (0° , 5°), (5°, 10°), (10°, 15°), (15°, 180°); 8 intervals in total.

[0044] The cut-in wind speed of the unit is 3m / s, and the cut-out wind speed is 25m / s, then th...

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Abstract

The invention relates to a yaw error analysis method for a wind generating set. The yaw error analysis method comprises the steps that partitioning is conducted on fault wind angle data, and set operation parameters corresponding to all the fault wind angle sections are classified according to the fault wind angle sections; power generation performance parameters of the wind generating set under all the fault wind angle sections are obtained according to the related set operation parameters under all the fault wind angle sections; and the yaw error of the wind generating set is determined by comparing the power generation performance parameters under all the fault wind angle sections. According to the yaw error analysis method for the wind generating set, the wind generating set body data are used, the potential operation yaw error of the wind generating set can be precisely worked out, and the engineering significance is great.

Description

technical field [0001] The invention relates to the field of performance evaluation of a wind power generating set, in particular to a method for analyzing a yaw error of a wind generating set. Background technique [0002] In recent years, wind power has developed rapidly and made great achievements. The core that affects the efficiency of wind power generation is the performance of wind turbines. At present, the most widely used wind turbine is generally composed of the following major systems: yaw system, pitch system, generator and frequency conversion system, main control system, etc. [0003] When the unit is running, the ideal situation is that the sweeping surface of the unit forms an angle of 90° with the incoming wind, that is, the sweeping plane of the unit is perpendicular to the incoming wind. The yaw system of the unit is to maintain this state. Through the rotation of the nacelle, the sweeping plane of the unit is kept perpendicular to the incoming wind; and...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F03D7/02
CPCF03D7/0204F05B2270/329Y02E10/72
Inventor叶小广刘庆超王宏伟孙昊孔德同于文革王志雷阳付立
OwnerHUADIAN ELECTRIC POWER SCI INST CO LTD