Turbulence Intensity Measurements with WindCube® Nacelle

Vaisala WindCube® Nacelle (WCN) is a Nacelle-Mounted Lidar (NML) that provides reliable wind data at multiple distances in front of a Wind Turbine Generator (WTG) to achieve quick and accurate Power Performance Tests (PPT), at low operational costs and in conformity with industry best practices.

WCN is quick and easy to deploy and operate to provide accurate and complete wind information to suggest explanations for wind turbine energy production underperformances and reasons for unexpected failures, such as nacelle yaw misalignment, or abnormal shears and high turbulence intensities.

Turbulence Intensity (TI) is one of the most important wind-related parameters, and is widely used in many applications, such as the verification of PPT, the load estimation of WTG, and the assessment of turbine micro-siting. The IEC 61400-50-3 standard was released in early 2022, which provides important guidance for the wind industry for the use of NML and standardizes the PPT procedure.

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