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Torque control method for high-capacity wind turbine generator and related products

A technology of wind turbine and torque control, which is applied in the control of wind turbines, the monitoring of wind turbines, and wind power generation. Wind energy efficiency, the effect of increasing power generation

Pending Publication Date: 2022-04-08
BEIJING HUANENG XINRUI CONTROL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current wind turbine control strategy cannot effectively control the wind speed fluctuation response frequency band based on the analysis of wind characteristics, and cannot suppress unnecessary power fluctuations.

Method used

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  • Torque control method for high-capacity wind turbine generator and related products
  • Torque control method for high-capacity wind turbine generator and related products
  • Torque control method for high-capacity wind turbine generator and related products

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Embodiment Construction

[0036] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as figure 1 As shown, the present invention proposes a torque control method for large-capacity wind turbines, including:

[0038] Step S1: establishing a generator torque fast following control equation and establishing a fast following control strategy based on the generator torque fast following control equation, the generator torque fast following control equation includes an estimated value of aerodynamic torque as a variable;

[0039] According to the torque transfer relationship between the wind turbine impeller and the generator, the rotor motion equation of the wind turbine can be expressed as:

[0040]

[0041] Among them, J sum is the per unit total moment of inertia of the wind turbine transmi...

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Abstract

The invention provides a torque control method for a high-capacity wind turbine generator and a related product, which can at least partially solve the problem of following lag caused by the increase of the inertia of an existing fan impeller. The torque control method for the high-capacity wind turbine generator comprises the steps that a generator torque rapid following control equation is established, and a rapid following control strategy is established based on the generator torque rapid following control equation, wherein the generator torque rapid following control equation comprises a pneumatic torque estimated value as a variable; measuring the wind speed and performing statistics to form wind speed characteristics including wind speed fluctuation amplitude and wind speed fluctuation frequency; measuring the torque of the generator, the rotating speed of the generator and the inertia moment of a fan transmission chain, calculating the measurement results, and combining the obtained calculation results with the wind speed characteristics to obtain an estimated value of the pneumatic torque; and feeding back the pneumatic torque estimation value to the quick following control strategy in real time, so that the quick following control strategy is adjusted in real time according to the change of the pneumatic torque estimation value.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a torque control method for large-capacity wind turbines and related products. Background technique [0002] Challenges and opportunities coexist in the wind power industry. The policy of carbon neutrality and carbon peaking has determined the development prospects of the wind power industry. Wind power generation represented by new energy power generation is developing rapidly. The innovation of wind power control technology is imperative to reduce the cost of wind power generation units. very important. For units that have been put into operation, optimizing unit operation control technology to increase power generation is an effective way to reduce the cost of electricity. [0003] Natural wind has random fluctuation characteristics, resulting in fluctuations in wind power. In the variable speed section, that is, the maximum power tracking section, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00F03D7/02F03D80/00
CPCY02E10/72
Inventor 曾卫东岳红轩韩健杜洋杨政厚王爽王真涛段选锋
Owner BEIJING HUANENG XINRUI CONTROL TECH
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