Tower load measuring method, device and system

Abstract

The invention discloses a tower load measuring method, device and system, belongs to the technical field of wind power, and is used for solving the technical problems of complex operation, high cost, inconvenience in disassembly and assembly and the like of the current tower load test, and the method comprises the following steps: 1) obtaining the deformation quantity of a tower; and 2) obtaining the tower load according to the deformation quantity of the tower. The device comprises an optical reflecting lens, an image acquisition unit, an image processing unit and an information processing unit, the plurality of optical reflecting lenses are distributed on each height layer of the tower; the image acquisition unit is positioned at the bottom of the tower and is used for acquiring image information of the optical reflecting lens on the tower; the image processing unit is used for carrying out image processing on the image information to obtain the deformation quantity of the tower; and the information processing unit is used for obtaining the tower load according to the deformation quantity of the tower. The device has the advantages of simple test principle, high applicability, low cost, simplicity and convenience in disassembly and assembly and the like.

Description

technical field [0001] The invention mainly relates to the technical field of wind power, in particular to a tower load measuring method, device and system. Background technique [0002] As a renewable energy source, wind power has been developed in our country for many years. With the maturity of technology, the subsidy policy of the wind power industry has begun to be gradually cancelled. In addition, the development of wind farms with high wind speed has been exhausted, and wind turbine manufacturers are faced with the dilemma of low hours of unit availability and high cost pressure. The development of high-power, high-tower units has become an industry consensus. , can increase the generating capacity of the unit to a certain extent. As a key component of a wind turbine, the tower needs to bear the weight of the wind rotor and the nacelle and the alternating load caused by the rotation. How to optimize the design of the tower and reduce the weight of the tower under the...

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Problems solved by technology

[0003] Among the currently retrieved literature on tower load measurement, the patent application with publication number CN109026554B "A Wind Power Generator Tower Load Measurement System" only explains the components of the tower load measurement system, and it is not clear how to perform the measurement. The patent "a load monitoring system and method" with the publication number CN110160682A is to measure the tower load by combining fiber gratings and strain gauges. The test principle is complicated, the cost is high and it is not easy to disassemble; The operating load of the tower and the design load threshold, and then through the control action to realize the load reduction of the wind turbine, the realization method of the tower load measurement system is not clear

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