msyß - Meßsysteme Bergelt

The specialists for imbalances and yield optimization on wind turbines.

• Measurement of mass and aerodynamic imbalances
  
• Balancing / Balancing of rotor imbalances on wind turbines
  
• Insertion of balancing weights / trim weights
  
• Blade angle measurement by laser, photometry or vibration measurement as required
  
• Determination and correction of relative and absolute blade angle errors
  
• Performance optimization & yield optimization. Fine adjustment of absolute blade angles
  
• Analysis of performance curves. Determination of the optimization potential of individual plants and entire wind farms using SCADA data.
  
• Vibration analysis, determination of causes of tonalities
• Highly accurate determination of the natural frequencies and the damping behaviour of plant towers and rotor blades
  
• Rental of measurement technology
  

We use only self-developed measurement technology & software optimized for wind turbines, from hi-speed laser scanners to vibration measuring systems.

How quickly does a measurement pay off?

The analysis of a large number of yield data has shown that an average deviation of the blade angles by 1.0 degrees from the optimum leads to a yield loss of approx. 7-10%. This means that even smaller absolute balde angle errors of a single baldes of only 0.3° cause a yield loss of 0.7-1.0%.

For a 2 MW wind turbine to measure the blade angles and correct a blade angle error of 0.3° on only one rotor blade pays off after only half a year.

Accordingly, the blade angle measurement pays off more quickly if several rotor blades are not optimally standing or if an entire wind farm is tested at once.

Statistics show that only about 10% of wind turbines have blade angle deviations below 0.3° in the balde set. This means that most plants have significant optimization potential.

When is a measurement recommended?

Generally recommended are blade angle measurement and testing for rotor imbalances

• immediately after commissioning of the wind turbines
  
• after replacement or repair of rotor blades
  
• wind turbines with low yields
• turbines starting only at higher wind speeds
• high vibrations