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Radar-assisted load optimizing control method for large wind turbine unit

A wind turbine, optimization control technology, applied in the control of wind turbines, monitoring of wind turbines, engine control and other directions, can solve problems such as affecting the stability, asynchrony of different blades, and achieve the effect of optimizing the load of the fan

Active Publication Date: 2016-05-11
HUNAN SHIYOU ELECTRIC PUBLIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no matter which control strategy is adopted, the change of the load with the pitch angle and the rotation position angle will inevitably affect its stability, and this fluctuation will even cause asynchronous phenomenon between different blades

Method used

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  • Radar-assisted load optimizing control method for large wind turbine unit
  • Radar-assisted load optimizing control method for large wind turbine unit
  • Radar-assisted load optimizing control method for large wind turbine unit

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Embodiment Construction

[0060] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0061] Such as figure 1 Shown, the present invention comprises the following steps:

[0062] 1) Radar scanning: use the laser radar detection system to measure the wind speed at different heights and positions on the windward side of the wind rotor;

[0063] The laser radar detection system first transmits the laser beam to the target position at different heights and different distances in front of the wind wheel. After the laser beam is scattered by the atmosphere, the scattered Doppler frequency shift signal is received by the photodetector, and the scattered frequency shift signal is compared with the laser beam. The coherent mixing of the local oscillator light in the radar detection system is used to perceive the change in the strength of the Doppler frequency shift signal, and then the coherent mixing signal is sent to the control circuit, and t...

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Abstract

The invention discloses a radar-assisted load optimizing control method for a large wind turbine unit. The radar-assisted load optimizing control method comprises the following steps: 1) carrying out radar scanning: measuring air speed, at different positions of different height layers of a wind wheel windward side by utilizing a laser radar detecting system; 2) analyzing aerodynamic characteristics of paddles of the wine turbine unit; 3) carrying out self-adaptive dynamic feed-forward regulation on a fan by utilizing predicated air speed detected at the next moment via the laser radar detecting system so as to realize controlling of a pitch angle, torque and rotational speed of a power generator, thereby optimizing fan load at the next moment. According to the radar-assisted load optimizing control method, the self-adaptive dynamic feed-forward regulation is carried out on a fan by utilizing predicated air speed detected at the next moment via the laser radar detecting system so as to realize controlling of the pitch angle, the torque and rotational speed of the power generator, so that faster response can be made for an extreme wind condition, and therefore, extreme load is avoided; and the capacity of predicating wind condition changes of a control system of the large wind turbine unit is improved, and optimizing control is carried out on a wind turbine in advance.

Description

technical field [0001] The invention relates to the field of large-scale wind turbine control, in particular to a radar-assisted load optimization control method for large-scale wind turbines. Background technique [0002] As one of the fastest-growing technologies in sustainable energy power generation, wind power generation has become an important means to deal with energy crisis and environmental pollution, and it is a hot spot and focus of current research at home and abroad. With the increasing maturity of wind turbine variable speed and pitch control technology and the gradual increase of unit capacity and wind rotor diameter, how to optimize the core control strategy to effectively reduce the load of key components of wind turbines, thereby reducing the cost of these key components and improving The reliability and service life of wind turbines have become one of the hot topics in wind power research at home and abroad. [0003] Due to the random and sudden character...

Claims

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Application Information

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IPC IPC(8): F03D7/04F03D17/00
CPCF03D7/0224F03D7/0276F03D7/0292F03D7/046F05B2260/70F05B2270/101F05B2270/1032F05B2270/20F05B2270/32F05B2270/331Y02A30/00Y02E10/72
Inventor 周腊吾韩兵邓宁峰田猛陈浩孟凡冬
Owner HUNAN SHIYOU ELECTRIC PUBLIC
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