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Draught-fan air-speed measurement method, device and system

A technology of wind speed measurement and fan, applied in measurement devices, fluid speed measurement, speed/acceleration/impact measurement, etc., and can solve the problem of small wind speed measurement range

Active Publication Date: 2014-05-07
SINOVEL WIND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the measured wind speed is the wind speed at a fixed point in front of the blade, the wind speed measurement range is small

Method used

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  • Draught-fan air-speed measurement method, device and system
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  • Draught-fan air-speed measurement method, device and system

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Embodiment Construction

[0021] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0022] figure 1 It is a schematic flow chart of the fan wind speed measurement method provided by Embodiment 1 of the present invention, such as figure 1 As shown, the fan wind speed measurement method of the present embodiment includes:

[0023] 101. Calculate the emission angle of the first measurement wave according to the relative position to the measur...

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Abstract

The invention provides a draught-fan air-speed measurement method, device and system, wherein the method part is: according to the relative positions of a wind turbine generator and a measurement point, calculating an emission angle of first measurement waves; according to the emission angle of the first measurement waves, emitting the first measurement waves to the measurement point so as to enable the measurement point to use air flows at a position of the measurement point and the second measurement waves to reflect second measurement waves; receiving the second measurement waves; and according to the first measurement waves and the second measurement waves, acquiring the speed of the air flows. The method, device and system solve a technical problem of smaller air-speed measurement scope of the wind turbine generator in the prior art so that work efficiency of a variable-pitch system can be improved.

Description

technical field [0001] The invention relates to wind power generation technology, in particular to a method, device and system for measuring wind speed of a fan. Background technique [0002] Wind turbines include impellers, nacelles and towers, where the impellers include blades and hubs. Due to the large volume of the blades of the wind turbine, under the action of the wind shear effect, there will be serious unbalanced vibration of the blades, which will increase the load of the wind turbine and shorten the service life of the wind turbine. In the prior art, according to the wind speed in front of the blade, an independent pitch adjustment strategy is formulated to adjust the angle of the blade, thereby reducing the load of the wind turbine. [0003] However, in the prior art, the laser anemometer is often placed on the ground in front of the wind turbine, and the laser beam is emitted vertically upward to measure the wind speed in front of the blade. Since the measured...

Claims

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Application Information

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IPC IPC(8): G01P5/00
Inventor 郭振江辛理夫蔡旋王华郝伟栋
Owner SINOVEL WIND GRP