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Wind turbine generator blade on-line detecting method and device

A technology for wind turbines and testing devices, which is applied to wind turbine components, measuring devices, and wind power generation, and can solve problems such as the lack of testing standards for wind turbines, and achieve the effects of convenient installation and debugging, good real-time performance, and high measurement accuracy

Inactive Publication Date: 2013-10-23
CHENGDU QIANHENG ANTAI INTELLIGENT TECH CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

As far as general performance testing is concerned, each wind power company has prepared some testing equipment, but there is no test standard for wind turbines

Method used

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  • Wind turbine generator blade on-line detecting method and device
  • Wind turbine generator blade on-line detecting method and device

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Embodiment

[0041] The structure of the wind turbine blade online detection device in this example is as follows: figure 2 shown. It includes a laser emitting unit, a laser receiving unit, a signal processing and control unit, a communication unit, a threshold decision device and an alarm, and a host computer placed in the monitoring center for sending various control commands and receiving blade swing data. The upper computer is usually composed of a computer system, which can process the received blade swing data for storage, display, analysis and calculation, drawing charts and blade swing change curves, etc. The laser receiving unit in this example consists of an optical receiver, a detector and a modem. The laser emitting unit of this example can adopt a solid-state or semiconductor laser emitting unit with mature technology. The laser emitting unit, laser receiving unit and signal processing and control unit can be arranged in the same cabinet and fixed on the rigid tower of the ...

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Abstract

The invention relates to a wind turbine generator blade detecting technique, and discloses a wind turbine generator blade on-line detecting method and a wind turbine generator blade on-line detecting device. The wind turbine generator blade on-line detecting method provided by the invention can be used for demodulating the blade amplitude of oscillation data from reflective light based on a laser radar detecting technique by adopting lasers to irradiate wind turbine generator blades and utilizing the modulation effect to reflective lasers by blade oscillation. The wind turbine generator blade on-line detecting device provided by the invention comprises a laser emitting unit, a laser receiving unit, and a signal processing and controlling unit. According to the invention, continuous or quasi-continuous lasers are projected to the wind turbine generator blades, and any oscillation of blades can generate a modulation effect to lasers projected to the blades, and the important physical parameter-amplitude of oscillation can be collected by receiving and demodulating lasers reflected by the blades. The wind turbine generator blade on-line detecting method and the detecting device provided by the invention do not need to modify the blades, cannot affect the structure safety of wind turbine generator blades, are convenient to use, and are wide in application.

Description

technical field [0001] The invention relates to a wind turbine blade detection technology, in particular to a laser radar online wind turbine blade swing monitoring method and an alarm system thereof. Background technique [0002] Wind energy is a clean and sustainable energy. In recent years, the Chinese government has given strong support to wind power generation. According to statistics, in 2007, 17,489 newly installed machines were added globally, of which 3,155 were newly installed in my country. By 2010, the newly installed capacity in the world and China will reach 30,000 units and 10,000 units respectively. So far, my country has built about 59 wind farms, and the growth momentum is strong. [0003] There are generally two types of wind turbines, horizontal axis wind power system and vertical axis wind power system. The wind turbine is a power generation device that converts wind energy into electrical energy. The wind acts on the blades of the wind turbine to dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00F03D11/00
CPCY02E10/722
Inventor 卿光弼高剑波冷杰张华陈德章
Owner CHENGDU QIANHENG ANTAI INTELLIGENT TECH CO LTD
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