A wind turbine foundation inclination detection method based on inclination sensor

Abstract

The invention relates to a method for detecting the inclination of a wind power generator foundation based on an inclination sensor, comprising: setting a reference platform, and installing four single-axis inclination sensors in the x and y directions of the reference platform, and the axis of each single-axis inclination sensor along the The side of the tower is set; the signal collected by the single-axis inclination sensor is received; the signal output by each single-axis inclination sensor is extracted by filtering algorithm and filtered to obtain the low-frequency part of the tower vibration signal; the filtered signal is processed by the integral algorithm to obtain The DC component of the output signal of the single-axis inclination sensor set in the x and y directions, that is, the inclination value of the side wall of the tower in the x and y directions; according to the angular relationship between the axis of the standard cone and the conical surface, we get Wind turbine foundation inclination angle. Compared with the prior art, the invention has the advantages of convenient installation, reliable performance, expandability and the like.

Description

Technical field [0001] The invention relates to a basic tilt detection method, in particular to a basic tilt detection method of a wind power generator based on an inclination sensor. Background technique [0002] Tower foundation tilt measurement refers to the detection of uniform or uneven settlement of the foundation of a building or large equipment to determine the safety of the building or large equipment. [0003] Because of the different subjects, there are many basic inclination detection methods for different problems. The basic methods can be roughly divided into: geometric leveling observation method, static leveling observation method, and fixed rod method. [0004] For large wind turbines, the uneven settlement of the foundation is the biggest hazard to the tower overturning, and general leveling observations cannot directly show the uneven settlement, and the inclination of the building itself is not involved. [0005] Even if the basic tilt can be detected by the genera...

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Problems solved by technology

[0006] For large-scale wind turbines with wide distribution, relatively large swing amplitude, and complex vibration signals, traditional detection methods do not fully meet the requirements in terms of function, installation, scalability, and performance

[0007] Chinese patent 201210133120.X discloses a method for detecting the inclination of a tower. This invention includes 1. building a detection platform, 2. installing an electronic tag on the flat plate of the inspection platform, and 3. placing a portable tilt detection device on the flat plate. The angle acquisition unit calculates the inclination data, but the patent still has shortcomings: installation is inconvenient, the inclination angle measurement method is not specific, and the foundation inclination of the wind turbine is not specifically analyzed, etc.

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