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Home » News » Wind Turbine Vibration Monitoring System

Wind Turbine Vibration Monitoring System

Views: 0     Author: Site Editor     Publish Time: 2024-05-24      Origin: Site

Wind Turbine Vibration Monitoring System

Vibration monitoring system plays a vital role in wind power operation and maintenance, through real-time monitoring of wind turbine vibration, can be found in advance potential faults, to ensure the safe and stable operation of the wind power system. As a wind power operation and maintenance service personnel, it is important to understand the vibration monitoring system's working principle, structural composition, operating characteristics and common fault handling methods. This paper will analyze the vibration monitoring system operation and maintenance methods, for wind power operation and maintenance personnel to provide practical guidance.

Working Principle

The main working principle of the vibration monitoring system is to collect vibration signals in real time through the vibration sensors installed in each key part of the wind turbine, and convert them into electrical signals for processing. By analyzing the frequency, amplitude and other characteristics of these vibration signals, the operational status of the wind turbine components can be judged, and potential faults can be detected in advance.

Main structure of the drive trainmicro accelerometer

As shown in the figure, the wind turbine is mainly composed of: wind turbine, pitch system, nacelle, gear box, yaw system, braking system, generator, electrical system, main control system, tower and foundation and other subsystems.

Selection of monitoring points

For the condition monitoring of wind turbines, effectively obtaining suitable monitoring signals is the guarantee for correctly judging the working status of the equipment. Generally speaking, the selection of measurement points has the following points to consider.

1, the measurement point should be set in the key parts of the equipment

2, the measurement point should avoid the parts of the harsh working environment

3, the measurement point should be determined according to the vibration characteristics of the monitoring object measurement point should be as close as possible to the object being measured

4, the number of measurement points should be appropriate

5, the location of the measurement point should remain stable

accelerometer sensor price

Based on the above consideration of the principle of selection of measurement points, and according to the previous analysis of the failure characteristics of wind turbines and the determination of the monitoring object, it can be determined that the main location of the vibration monitoring point of the system is shown in the figure below.

Measurement point Measurement object Testing method Sensor position Sensor type
1 Spindle bearings Radial Directly below the bearing seat Low speed acceleration sensor
2 Spindle bearings Axial Directly below the bearing seat Low speed acceleration sensor
3 Second main bearing Radial Directly below the bearing seat Low speed acceleration sensor
4 Planetary gear Radial Input gear section, bearing seat Low speed acceleration sensor
5 Planetary gear Radial Above the planetary gears Standard accelerometer
6 Secondary gear Radial Between the inlet and intermediate shaft Standard accelerometer
7 Secondary gear Axial Between intermediate shaft and high-speed shaft Standard accelerometer
8 Alternator Radial Below the free end bearing Standard accelerometer
9 Alternator Radial Below the input bearing Standard accelerometer
10 Principal axis Radial Principal axis Speed sensor
11 Generator input terminal Radial Generator input shaft Speed sensor

iepe accelerometer

Vibration online monitoring system composition

It consists of sensors, data collectors, field servers, and monitoring and analysis software.

three-axis accelerometer sensor

Vibration Monitoring Process

After collecting the vibration data, the analysis process on the figure, after the time domain processing, frequency domain processing, the envelope demodulation algorithm is used to complete.

Xiyuan Electronics has launched two vibration sensors to further help realize vibration monitoring and health management of wind turbines.

Product Overview

                                                                                   Main technical indicators
Features Unit A26 A26D
D100T05 500T05
Measuring range (peak) g ±50 ±10
Sensitivity (25°C) mV/g 100 500
Frequency response (1dB) Hz 1-9,000 0.5-5,000
Frequency response (3dB) Hz 0.5 0.2-
-14,000 10,000
Mounting resonance frequency Hz ≥25000 ≥12000
Transverse sensitivity % ≤5 ≤5
Excitation voltage VDC 18~28 18~28
(Constant current source)
Constant current source excitation mA 2~10 2~10
Full scale output (peak) V ±5 ±5
Noise (rms) μV <50 <80
Bias voltage VDC +10-14V +10-14V
Output impedance Ω <100 <100
Mounting insulation to ground Ω ≥10^8Pressure resistance
≥10^8Pressure resistance
Operating temperature -40~+120 -40~+120
Shock limit (peak) g ±5000 ±5000
Structure and piezo material
Shear/ Shear/
Outline dimension
dimensions Fig. 2
dimensions Fig. 2
Housing material
304 stainless steel 304 stainless steel
Electrical connector
2-Pin socket
2-Pin socket
Mounting method
1/4-28 1/4-28
Protection class
IP65 IP65
Weight g ~80 ~80
Mounting bolts
1/4-28 to M6 1/4-28 to M6
Connection cable
DJ03-3M DJ03-3M

Product Size

piezotronic accelerometer

Temperature Curve

shock sensor accelerometer

Loudness Curve

triaxial accelerometer vibration sensor

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