Molas NL - Nacelle Wind LiDAR

0 %
structural load can be reduced
0 %
turbine AEP can be increased
0
Units have been deployed on wind turbines
0
Simultaneous measurement ranges

Molas NL is a nacelle wind lidar which is independently developed by Nanjing Movelaser for wind power customers’ intelligent application solutions. It is a remote sensing laser device which can be installed above the wind turbine nacelle. It uses a coherent detection system based on the principle of laser Doppler frequency shift to achieve an accurate measurement of the wind vector field from the top of the nacelle to the front tens of to several hundred meters ahead of turbine rotor.

Molas NL measures and records wind data information of 400 m in front of wind turbines. After it’s connected to the main control system of the wind turbine, it can realize the functions in a variety of automated operating scenarios such as yaw control, load optimization, power curve test and so on.

Measurement Parameters

Measuring distance

50-400m

Measure the number of Ranges

10 

Sampling frequency

4Hz

Wind speed measurement accuracy

 0.1m/s

Wind direction measurement accuracy

0.5°

Wind speed measurement range

 0~50m/s

Wind direction measurement range

-90°~90°

General Parameters

Power Supply 

240V

Weight

<35kg(Optical head)

<25kg(Digital storage unit)

Range of working temperature

-40℃ ~ 60℃

Survival temperature range

-40℃ ~ 65℃(Power off)

-45℃ ~ 65℃(Power on)

Working humidity range

 0%  to 100%

Protection level

IP65(In-flight equipment)

IP66(Off-board equipment)

Anti-corrosion grade

ISO C5

Eye safety

IEC / EN 60825-1 ANIS Z136-1

Communication method

customizable

MOLAS NL NACELLE WIND LIDAR

Download the Full specification of Molas NL

Certification and Calibration Reports of Molas NL Nacelle Wind LiDAR

MOLAS NL NACELLE BASED WIND LIDAREFARM CERTIFICATION DNV.png

DNV-GL Load Reduction Certificate

 Molas NL working together with EFARM algorithm has been certified by DNV-GL  that the loads on tower, blades were significantly reduced comparing to the baseline. 

Windguard AEP Increase Certificate

 Molas NL nacelle wind lidar working together with EFARM algorithm has been certified by Windguard that the AEP improvement of wind turbine 

MOLAS NL NACELLE BASED WIND LIDAR EFARM CERTIFICATION WINDGUARD

Molas NL Nacelle Wind LiDAR Project Example

MOLAS NL NACELLE BASED WIND LIDAR PROJECT EXAMPLE 1

Project Information:

  • Project Name: National Radio Qinghai Gonghe Wind Farm
  • Project capacity: 450,000 kilowatts
  • Project model: GW121/2000
  • Number of EFarm configurations: 225

AEP Increas of the wind turbine - Power Curve Comparison

Power generation increased by more than 3%

MOLAS NL NACELLE BASED WIND LIDAR PROJECT EXAMPLE 3
MOLAS NL NACELLE BASED WIND LIDAR PROJECT EXAMPLE 2

Load Reduction - Rotor Speed Deviation Comparison of EFarm on and off

 

The standard deviation of the speed has dropped significantly, which indicates expected control and load reduction effect has been achieved. 

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