Wind Turbines / 風力發電機
Wind power is a sustainable power source that exploded a few decades ago.
Permanent monitoring helps to avoid any unscheduled malfunction. In the worst
case, a lack of maintenance could conduct to the turbine shut down or even
destruction, cutting off the power production.
There are two types of applications:
• Turbine monitoring: measurements of vibrations on critical components
• Tower tilt inclination: angle calculation for proper tower positioning
Explanation of the System
A wind turbine has a simple mechanism: three blades rotate about an axis at low
frequencies (typically from 0 to 20 rpm). After speed amplification, the shaft
is connected to a generator that converts inertial to electrical energy. The
sensors are embedded in a bi-axial or tri-axial container, fixed to a structure
to measure its acceleration. A vibration is easily detected due to a different
The sensors will be exposed to a temperature is between -40 and 55°C, with
atmospheric pressure. Humidity level can vary from 3% to 100%, whether the wind
turbine is working under dry or humid conditions.
Good vibration analysis requires both a broad bandwidth and an excellent
precision. The range of the bandwidth allows to notice low or high frequencies,
and the precision describes how quickly defect is detected
Critical Technical Properties
VS1000 is adapted for vibration
analysis: its usual range would be ±2g for blade and structural diagnosis, and
around ±10g for internal monitoring. The vibration sensor family offers the best
performance for monitoring, with bandwidth from DC 0 Hz to 7000 Hz at -3 dB, and
a functioning temperature range from -55°C to +125°C.
TS9000 series is ideal for tilt
applications: the TS9001.D largely respects the requirements for tower
inclination, reaching a resolution of 0.003°.