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Intelligent control compensation method and device for improving wind energy capturing capacity of wind generating set

A technology of wind power generating set and compensation method, which is applied in the direction of wind power engine control, wind power engine monitoring, engine control, etc., can solve the problem of low wind energy capture ability, and achieve the effect of improving capture ability and optimizing output

Inactive Publication Date: 2017-03-22
ZHEJIANG WINDEY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to overcome the deficiency of the low wind energy capture ability of the existing wind power generator control method, the present invention provides an intelligent control compensation for improving the wind energy capture ability and realizing the output optimization under different working conditions. Method and device

Method used

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  • Intelligent control compensation method and device for improving wind energy capturing capacity of wind generating set
  • Intelligent control compensation method and device for improving wind energy capturing capacity of wind generating set
  • Intelligent control compensation method and device for improving wind energy capturing capacity of wind generating set

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Embodiment 1

[0038] refer to figure 1 , an intelligent control and compensation method for improving the wind energy capture capability of a wind power generating set, the control and compensation method includes the following steps:

[0039] 1) By measuring the temperature, air pressure and humidity of the site where the wind turbine is located, the period is T cal Timed calculation to obtain local instant air density; T cal Set according to the density fluctuation of different wind farms;

[0040] 2) Integrate the calculated discrete air density values ​​into several preset intervals, and assign the density input to the main control system according to the interval where the actual density is located;

[0041] 3) Correct the density-related parameters in the main control program of the wind turbine according to the interval of the real-time air density value; and when the air density is lower than the preset threshold (1.0kg / m 3 ), turn on the unit pitch function before the wind speed...

Embodiment 2

[0047] refer to figure 1 , an intelligent control and compensation device for improving the wind energy capture capability of a wind power generating set, the device includes:

[0048] The measurement module is used to measure the air temperature, air pressure and humidity of the site where the wind turbine is located, and the period is T cal Timed calculation to obtain local instant air density; T cal Set according to the density fluctuation of different wind farms;

[0049] Calculation module for calculating discrete air density values;

[0050] The judging module is used to judge the range of the actual air density, and assign the density input to the main control system according to the range of the actual density; at the same time, judge whether the real-time air density is lower than the preset threshold (1.0kg / m 3 ), so as to issue an advance pitch / no advance pitch instruction to the main control system;

[0051] The instruction module is used to modify the density-...

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Abstract

The invention discloses an intelligent control compensation method for improving wind energy capturing capacity of wind generating set. The method comprises the following steps that (1) the local current air densities are obtained through timing calculation with the period of Tcal by measuring the air temperature, the air pressure and the humidity of a field where the wind generating set is located; (2) discrete air density values obtained through calculation are integrated into a plurality of preset interval ranges, and the densities input into a master control system are assigned according to the interval of the actual density; and (3) according to the interval of the current air density value, parameters of a master control program of the wind generating set relevant to density are corrected, when the air density is lower than a preset threshold, a set blade variable function is started before the wind speed reaches the rated wind speed, and the wind generating unit maintains the optimal working state in the changing environment. The invention further provides an intelligent control compensation device for improving wind energy capturing capacity of wind generating set. The method and device improve the wind energy capturing capacity and achieve output optimization under different working conditions.

Description

technical field [0001] The invention belongs to the field of wind power generator control, and relates to a control and compensation method and device for improving the wind energy capture capability of a wind power generator set. Background technique [0002] As the development of domestic wind farms shifts to low-wind speed and high-altitude areas, it is becoming more and more important to improve the wind energy capture capability of wind turbines. Traditional domestic wind turbines have a single control strategy, especially only using standard air density to calculate the optimal control curve, which has poor adaptability to diverse natural environments. [0003] Failure to consider the influence of different air densities on the output of wind turbines at different sites or at different time periods at the same site has brought two defects to the wind energy capture capability of the unit: [0004] (1) When the air density deviates from the standard air density, the op...

Claims

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Application Information

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IPC IPC(8): F03D7/00F03D17/00
CPCF03D7/00F05B2270/32F05B2270/323F05B2270/324F05B2270/325Y02E10/72
Inventor 汪家瑜刘德兴廖元文陈棋
Owner ZHEJIANG WINDEY
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