Assess wind turbine suitability with new turbulence class features, ensuring structural integrity and optimal site performance.
Turbulence classes are essential for assessing wind park site suitability, as turbulence impacts the structural integrity of turbines. Each turbine design is certified for a specific turbulence class (A, B, C, or custom S-class) based on its ability to handle turbulence intensities, following IEC 61400-1 standards. These classes define the maximum representative turbulence intensity (TI) at a turbine’s location, varying with wind speed. Manufacturers can specify custom S-class curves, adjustable in the Turbine component under “S-class TI curves.”
The IEC standard uses a wake model, derived from Sten Frandsen’s work, to calculate Effective Turbulence. This combines ambient turbulence and additional wake-induced turbulence from upstream turbines within 10 rotor diameters, considering only the nearest turbine’s wake.
By averaging effective turbulence over wind directions and factoring in ambient turbulence variability, the 90th percentile turbulence, or Representative Turbulence, is calculated for each wind speed. This value must fall below the chosen turbulence class curve for site suitability.
We have now added the possibility to evaluate the site suitability of a given wind turbine type for the park
layout in your Scenario. You will also be able to:
In the context of Turbines and their properties, you will now be able to see the lowest Turbulence Class that the turbine position complies with, as well as being able to view by colour, the least and most affected turbines in your scenario.
Take a look at the full product update by using the link down below: