Molas NL Nacelle-based Wind Lidar Introduction
Molas NL is a cabin-type wind-measuring laser radar independently developed for wind power customer intelligent application. 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. Features
Real front wind measurement
Data transmission and local storage
Accuracy up to 0.1m/s and 0.5°
High sampling rate: 4Hz
Multiple distance layers: simultaneous measurement of 10 user-defined distance layers
Large range: measure distance up to 400m to meet diverse needs
Four beams: covers rotor surface to achieve 3D measurement
Intelligent configuration: flexible wireless connection to achieve intelligent remote control
Maintenance-free: no consumables, no wearing parts, no maintenance during the entire life cycle
High applicability: full temperature range and environmental conditions
High compatibility: universal data interface and installation interface for wind power Technical parameters
Measurement Parameters
Measuring Distance: 50m ~ 400m
Distance Level: 10
Wind Speed Range: 0m/s ~ 50m/s
Wind Speed Accuracy: 0.1m/s
Wind Direction Range: -90° ~ 90°
Wind Direction Accuracy: ≥0.5°
Effective Frequency: 4Hz
Environmental Parameters
Maximum Working Humidity: 100% (Outer Parts of nacelle), 95% (Inside Parts of nacelle)
Working Acceleration Range: -0.5g ~ 0.5g
Operating Temperature Range: -40℃~60℃
Operating Temperature Range: -40℃~65℃ (power off)
-45℃~60℃(power on)
Survival Wind Speed: 70m/s
Working Altitude: ≤3500m
Other Parameters
Optical Probe Protection Class: IP66
Signal Processing Protection Class: IP65
Lens Requirements Against: Freezing,Dust, Etc.
Anti-corrosion Grade: ISO C5
Communication Protocols and Interfaces such as Profibus DP
Optical Probe Weight: ≤35kg
Signal Processing Module Weight: ≤10kg
The Maximum Passing Size: 500mm * 500mm
Life: >5 years
Introduction
Molas NL is a cabin-type wind-measuring laser radar independently developed for wind power customer intelligent application. 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.
