System and method for judging fan tower deformation and foundation settlement

A foundation settlement and fan tower technology, which is applied in foundation structure tests, foundation structure engineering, measuring devices, etc., can solve the problems of manual monitoring of fan unit tower deformation, high cost, data accuracy affected by human factors, and foundation settlement observation work Large quantity and other problems, to achieve the effect of strong adaptability to the tested environment, good insulation, and strong anti-electromagnetic interference ability

Pending Publication Date: 2021-02-26
华能通辽风力发电有限公司
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Problems solved by technology

[0005] The present invention provides a system and method for discriminating the deformation of the wind turbine tower and the settlement of the foundation to solve the problem of high cost and untimely monitoring of the deformation of the tower of th

Method used

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  • System and method for judging fan tower deformation and foundation settlement
  • System and method for judging fan tower deformation and foundation settlement
  • System and method for judging fan tower deformation and foundation settlement

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Example Embodiment

[0060]The implementation scheme of the method for discriminating the settlement of the fan foundation in the present invention is as follows:

[0061]The basic settlement judgment is composed of fiber grating strain sensor, fiber grating temperature sensor, fiber grating wavelength demodulator and monitoring server. The fiber grating is used as a sensor to monitor the changes in the foundation settlement of the fan in real time.

[0062]Four sets of fiber grating displacement sensors are arranged at the bottom of the fan, and four fiber grating temperature sensors are configured for temperature compensation. The fiber grating displacement sensor measures the expansion and contraction deformation of the foundation itself and the relative settlement deformation with the surrounding ground.

[0063]The first step: arranging the fiber grating sensor.

[0064]Four sets of fiber grating displacement sensors are arranged on the base of the fan, and four fiber grating temperature sensors are configured...

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Abstract

The invention discloses a system and method for judging fan tower deformation and foundation settlement, and the system acquires the temperature change data, displacement change data and strain changedata of a fan tower and a fan bottom foundation of a wind turbine generator in real time through a fiber bragg grating sensor, a fiber bragg grating wavelength demodulator is utilized to demodulate the data, and the demodulated data is then sent to a monitoring server so as to visually display the demodulated temperature change data, displacement change data and strain change data, thereby judging the deformation and foundation settlement of the fan tower. According to the invention, dynamic measurement can be realized, and the system has the advantages of strong anti-electromagnetic interference capability, good insulation, corrosion resistance, high precision, large-range measurement, high resolution, small size, light weight, strong capability of adapting to a measured environment, many measurable parameters, wide objects, strong compatibility with optical fibers, suitability for long-distance transmission, high sensitivity, and convenience for multiplexing and networking.

Description

Technical field[0001]The invention relates to the technical field of power system detection, in particular to a system and method for discriminating the deformation of a wind turbine tower and the settlement of the foundation.Background technique[0002]As a new high-tech, fiber grating sensor has advantages that traditional sensors do not have. For new energy wind farms in the power system, the smooth operation of the equipment is very important. Once the equipment fails, the power transmission will be interrupted and the impact will be huge. The tower is an important component of the wind turbine. The wind turbine has a large mass, a long blade length, a load bearing capacity, a high height, and flexibility. The tower bears more complex and variable loads during the operation of the wind turbine. In addition, due to the complex geological structure, the foundation also has uneven settlement, which may cause the tower to deform. If these hidden dangers cannot be discovered in time, t...

Claims

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Application Information

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IPC IPC(8): G01D21/02E02D33/00
CPCG01D21/02E02D33/00
Inventor 丁坤李国庆翟国金青根木王曦马云龙于洋
Owner 华能通辽风力发电有限公司
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