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Method for monitoring a rotary element belonging to a mechanical transmission of a wind turbine

A technology for wind turbines and rotating parts, applied in the field of rotating parts, which can solve problems such as high maintenance costs and difficult signals

Inactive Publication Date: 2013-07-24
迈亚风力公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, it is common practice to monitor the entire shafting with about ten accelerometers, which leads to high maintenance costs and also difficulties in managing the signals to be stored and processed

Method used

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  • Method for monitoring a rotary element belonging to a mechanical transmission of a wind turbine
  • Method for monitoring a rotary element belonging to a mechanical transmission of a wind turbine
  • Method for monitoring a rotary element belonging to a mechanical transmission of a wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0108] Figure 1-4 The monitoring method shown includes the following steps:

[0109] -a) Determine the instantaneous angular velocity signal of the rotating part during the acquisition period, denoted as ω( figure 1 shown),

[0110] -b) The number of samples determined by sampling the angular velocity signal ω at a constant angular distance, i th The angular velocity signal of angular distance sampling is expressed as ω(i),

[0111] -c) Perform discrete Fourier transform calculation on the angular velocity signal sampled in step b) to obtain the order spectrum of the angular velocity signal ω(i),

[0112] -d) Detect the fundamental frequency of the occurrence of defects in rotating parts based on the order spectrum of the angular velocity signal ω(i).

[0113] Said step a) and step b) include:

[0114] - installing a tachometer on the rotating part, said tachometer delivering a series of pulses representing the instantaneous angular position ω of the rotating part,

[0...

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Abstract

The invention relates to a method comprising the steps of: a) determining a signal that is representative of the instantaneous angular velocity of the rotary element over an acquisition period; b) sampling the signal representative of the angular velocity at a constant angular pitch over a predetermined number of samples; c) calculating the discrete Fourier transform of the signal representative of the angular velocity, sampled during step b), so as to obtain an order spectrum of the signal representative of the angular velocity; and d) detecting the fundamental frequency of the occurrence of a defect in the rotary element over the order spectrum of the signal representative of the angular velocity.

Description

technical field [0001] The present invention relates to a method for monitoring rotating components in a mechanical transmission of a wind turbine, and to a system for monitoring rotating components in a mechanical transmission of a wind turbine. Background technique [0002] "Rotating part" is to be understood in particular as: [0003] - shafting of wind turbines, [0004] - bearings supporting the shafting, [0005] - gears in gear sets of step-up gears for wind turbines, [0006] - A rotor / stator bar of an engine of a wind turbine. [0007] In particular, the purpose of monitoring rotating parts is to detect defects of these rotating parts, which is an important issue when managing maintenance and servicing of wind turbines. [0008] It is a practice known from the prior art to mount accelerometers on the housing of the rotating part to be monitored to obtain measurements with constant time steps of vibrations induced by defects and transmitted to the accelerometer v...

Claims

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Application Information

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IPC IPC(8): G01H1/00
CPCG01H1/003
Inventor 雨果·安德烈迪迪尔·雷蒙德
Owner 迈亚风力公司