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Wind speed information processing method, wind speed information processing device, variable-pitch control method, variable-pitch control device and variable-pitch control system

A control method and wind speed technology, which are applied in the control of wind turbines, engine control, wind energy power generation, etc., can solve the problems of inaccurate wind speed data, long measurement distance of wind speed sensors, and high blindness, and achieve low hardware cost and modification cost. Improved power generation, power generation efficiency, and stable rotational speed control

Active Publication Date: 2017-12-26
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high blindness of wind speed prediction based on weather forecast information, the predicted wind speed data is inaccurate, and it is difficult to use it as the basis for pitch control; while for the method of measuring the current wind speed through wind speed sensors, if the wind speed If the sensor is installed on the pitch wheel hub, since the pitch wheel hub is rotating, the installation of the wind speed sensor is more difficult, and if the wind speed sensor is installed at the tail of the nacelle, the measurement distance of the wind speed sensor needs to be longer, usually using laser Anemometer, but not suitable for a single wind turbine due to its large size

Method used

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  • Wind speed information processing method, wind speed information processing device, variable-pitch control method, variable-pitch control device and variable-pitch control system
  • Wind speed information processing method, wind speed information processing device, variable-pitch control method, variable-pitch control device and variable-pitch control system
  • Wind speed information processing method, wind speed information processing device, variable-pitch control method, variable-pitch control device and variable-pitch control system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] figure 1 is a flowchart illustrating a pitch control method according to Embodiment 1 of the present invention. by including as Figure 9 The shown apparatus performs the method.

[0045] refer to figure 1 , S110, acquiring the wind speed change data of the current upwind side of the wind power generating set.

[0046] Wherein, the wind speed change data may be data of a change trend formed by wind speed data at multiple sampling time points. The current upwind side of the wind power generating set may be one or more wind power generating sets located at a predetermined position of the wind power generating set. The wind power generating set may be any wind power generating set on the downwind side.

[0047] Specifically, the wind farm includes multiple wind power generators, and the multiple wind power generators can be divided into upwind side wind power generators and downwind side wind power generators according to the geographic location information of the win...

Embodiment 2

[0063] Figure 4 is a flowchart showing a pitch control method according to Embodiment 2 of the present invention, and the embodiment can be regarded as figure 1 and image 3 Yet another specific realization scheme combined.

[0064] refer to Figure 4 , S401, the central monitoring obtains the geographic location information of multiple wind power generating sets, the nose orientation information and the wind direction data measured by each wind generating set.

[0065] Wherein, the geographic location information may be information of geographic coordinates, or information of a relative distance to a certain base point. The wind direction data measured by each wind power generating set is relative to the direction of the sensor used to detect the wind direction in the wind generating set.

[0066] Specifically, in order to control multiple wind power generators in a wind farm, a central monitoring system may be set for the wind farm. A plurality of different sensors are...

Embodiment 3

[0110] Based on the same technical idea, Figure 9 is a logic block diagram showing the pitch control device according to Embodiment 3 of the present invention. refer to Figure 9 , the device includes a wind speed change acquisition module 910 , a wind speed change comparison module 920 and a pitch control module 930 .

[0111] The wind speed change acquisition module 910 is used to acquire the wind speed change data of the current upwind side of the wind power generating set.

[0112] The wind speed change comparison module 920 is configured to determine whether the wind speed change of the local wind power generating set matches the current wind speed change on the windward side according to the wind speed data measured by the local wind power generating set and the current wind speed change data on the windward side .

[0113] The pitch control module 930 is configured to: if the change in wind speed of the wind power generating set matches the change in wind speed on t...

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Abstract

The embodiment of the invention provides a wind speed information processing method, a wind speed information processing device, a variable-pitch control method, a variable-pitch control device and a variable-pitch control system. The variable-pitch control method comprises the following steps: acquiring the current wind speed change data of the weather side of a wind generator set; determining whether the wind speed change of the wind generator set is matched with the current wind speed change of the weather side or not according to the wind speed data measured by the wind generator set; and if the wind speed change of the wind generator set is matched with the current wind speed change of the weather side, and the current rotational speed is within a predetermined rotational speed range, carrying out variable-pitch control on the wind generator set according to the current wind speed change data of the weather side. With the adoption of the embodiment of the invention, control for the rotational speed of the wind generator set can be more stable, the load of the wind generator set is effectively reduced, and the generating efficiency is increased; and moreover, requirements on the measurement accuracy and the installation position of a wind speed sensor are avoided.

Description

technical field [0001] The invention relates to wind power generator technology, in particular to a wind speed information processing method and device, and a pitch control method, device and system. Background technique [0002] With the continuous increase of wind power generation capacity, the type and control mode of wind turbines have developed from a single fixed pitch control to variable pitch control and variable speed control. How to ensure the efficient and stable operation of wind turbines has become an important content to be solved in wind power technology. [0003] The operating area of ​​variable pitch wind turbines is generally divided into four operating areas: start-up area, constant Cp area, constant speed area, and constant power area. In the three operating areas of starting area, constant Cp area, and constant speed area, the main control system will control the blades to open to an angle of 0 degrees, and there is no need to perform propeller control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCF03D7/00F05B2270/328Y02E10/72
Inventor 马磊李庆江
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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