Product Description:
The Molas NL series represents an advanced nacelle wind lidar system, independently developed by our company to meet the demands of intelligent wind power applications. This innovative device uses laser-based remote sensing technology and is installed directly on the wind turbine nacelle. It operates on a coherent detection principle by utilizing laser Doppler frequency shift. By emitting laser pulses and examining the backscattered signals from atmospheric aerosols, the system provides accurate vector wind field measurements at various distances ahead of the rotor plane, ranging from 50 m to 200 m for the NL200 model, 400 m for NL400, 500 m for NL500, and 70 m to 750 m for NL750.
Supporting up to 10 measurement layers simultaneously, the Molas NL series offers a data refresh rate of 4 Hz, ensuring timely wind information. It delivers exceptional accuracy with wind speed measurements precise to 0.1 m/s and wind direction accuracy within ±0.5°. The system is designed with four beam configurations: all models maintain a horizontal angle of 30°, while the vertical angle is set at 25° or 10° for NL200, and 10° for NL400, NL500, and NL750. These configurations guarantee optimal spatial coverage tailored to different turbine specifications and site conditions.
Integration with turbine control systems is seamless through various industrial communication protocols such as Profibus DP, Modbus TCP, Modbus RTU, and CANOPEN. This extensive connectivity facilitates advanced feed-forward control strategies by providing real-time wind preview data. As a result, turbines can proactively adjust their pitch and yaw settings ahead of incoming wind gusts. This proactive adjustment significantly reduces extreme and fatigue loads while simultaneously boosting annual energy production (AEP). Additionally, the Molas NL series is invaluable for applications including yaw misalignment correction, power curve verification (serving as a replacement for conventional meteorological masts), wake detection and analysis, as well as intelligent cooperative control across multiple wind farms.
Built to withstand harsh environmental conditions, the system features an optical head rated at IP67 and a data processing unit rated at IP65. Its corrosion resistance meets ISO C5 standards, making it suitable for deployment in offshore, onshore, and environments with high humidity or salt spray. The operational temperature range spans from ‑40 °C to +60 °C, with survival ranges extending from ‑40 °C to +65 °C during power outages and from ‑45 °C to +65 °C when powered. It can endure survival wind speeds reaching up to 75 m/s and operates reliably at altitudes as high as 3,500 m. The lightweight design, with the optical head weighing no more than 17.5 kg and the data unit under 3.6 kg, allows for easy installation and reduces crane-related expenses.
With its durable construction, unparalleled precision, and flexible connectivity options, the Molas NL series transcends traditional wind measurement tools. It forms the foundation for smart wind farm operations, empowering operators to enhance efficiency, cut maintenance costs, and gain a sustainable competitive advantage within the renewable energy sector.
Features:
This device offers genuine front wind measurement, ensuring precise and reliable wind data collection. It supports real-time data transmission along with local storage capabilities, allowing for continuous monitoring and secure data backup.
With an accuracy reaching up to 0.1 meters per second and angular precision of 0.5 degrees, it delivers highly accurate wind assessments. The instrument also features a high sampling rate, enabling detailed and frequent data capture over multiple distance layers, accommodating a broad measurement range.
Equipped with a four-beam, three-dimensional measurement system, this technology enhances the quality and depth of wind data. Its intelligent configuration simplifies operational setup, making it user-friendly and adaptable to varying needs.
Designed for ease of maintenance, the device ensures long-term reliability while maintaining high applicability across different environments. Furthermore, it boasts extensive compatibility with other systems, facilitating seamless integration and versatile usage.
Technical Parameters:
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Measurement Layer
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10
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Survival Temperature
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-40°C ~ 65°C (power Outage) / -45°C ~ 65°C (power Ups)
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IP (Optical Head)
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IP67
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Weight (Data Unit)
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≤3.6kg
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Temperature Range
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-40°C ~ 60°C
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Range
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70m ~ 750m (NL750)
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Weight (Optical Head)
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≤17.5kg
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Acceleration Range
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-0.5g ~ 0.5g
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Survival Wind Speed
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75m/s
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IP (Data Unit)
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IP65
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This Nacelle Mounted Lidar product supports advanced features such as feed-forward control and preview wind measurement, enabling highly accurate preview wind measurement for improved turbine performance and reliability.
Applications:
Blade Load Analysis
Blade load analysis involves examining the forces and stresses that wind turbine blades experience during operation. This assessment is critical for ensuring the structural integrity and longevity of the blades under various wind conditions.
Power Curve Test
The power curve test is conducted to determine the relationship between the wind speed and the power output of a wind turbine. This test helps in evaluating the turbine’s performance and efficiency under different environmental conditions.
Wake Analysis
Wake analysis studies the effects of the airflow behind a wind turbine, which can impact the performance of downstream turbines. Understanding and mitigating wake effects are essential for optimizing wind farm layouts and improving overall energy production.
Yaw Correction
Yaw correction refers to adjustments made to align the wind turbine rotor with the wind direction. Proper yaw control maximizes energy capture and reduces mechanical stress on the turbine components.
Intelligent Farm Group Control
Intelligent farm group control involves the coordinated management of multiple wind turbines within a wind farm. This approach uses advanced algorithms and real-time data to optimize power output, reduce wear, and enhance the reliability of the entire wind farm system.
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