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Method for acquiring wind speed value of wind driven generator

A wind power generator, wind speed technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as hidden safety hazards of the unit

Active Publication Date: 2015-12-09
东方电气风电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the wind turbine is running near the cut-out wind speed, if the wind speed measurement value is wrong, the operating load of the wind turbine may be higher than the design value, which will bring huge hidden dangers to the safety of the wind turbine

Method used

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  • Method for acquiring wind speed value of wind driven generator
  • Method for acquiring wind speed value of wind driven generator
  • Method for acquiring wind speed value of wind driven generator

Examples

Experimental program
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Embodiment Construction

[0062] figure 1 is the schematic diagram of the transmission chain model of the wind turbine, and figure 1 Convert the model of the low-speed axis to the high-speed axis, and consider the whole model as a rigid model, and get figure 2 A simplified drive train model for . And set the highest point in front of the wind wheel hub as the sampling point for wind speed calculation. Assumed by the rigid model, the mechanical model of the wind wheel transmission chain can be listed as follows:

[0063] T A - T G = J d ω d t - - - ( 1 )

[0064] in:

[0065] T A Indicates the aerodynamic moment on the wind wheel (converted to the high-speed shaft side);

[0066] T G Indicates the electromagnetic torque o...

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Abstract

The invention discloses a method for acquiring a wind speed value of a wind driven generator. A mathematical model used for solving the wind speed is built by means of parameters, corresponding to the wind speed, of the wind driven generator, and then the wind speed value is calculated through the model. The method has the advantages that wind speed sampling points are accurate, the acquired wind speed value is real and reliable, high in precision and free of measuring errors, and a wind speed measurement device does not need to be used.

Description

technical field [0001] The invention relates to wind power generation technology. By establishing a mathematical model for wind speed estimation, reliable measurement information is collected, and the wind speed at the hub center height is calculated by the wind speed estimation model, so that the traditional anemometer of the wind power generation unit can be replaced. Background technique [0002] At present, an anemometer is used to directly measure the wind speed of the incoming wind. The anemometer has a mechanical wind cup as a primary detection element and is installed at the tail of the nacelle. The wind speed measured by the wind cup is not the wind speed directly in front of the wind wheel. , but the wind speed affected by the rotating wake of the wind rotor has a large deviation from the actual undisturbed wind speed. In addition, due to the moment of inertia of mechanical wind cups, most wind turbines in my country are installed in wild areas with strong wind and...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 兰杰莫尔兵林志明王其君尹景勋林淑
Owner 东方电气风电股份有限公司
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