Initiations

When using the association method, the initiation strategy determines which wind climate data at a measurement site is associated with a turbine or location.

If you run the flow calculation in WindFarmer: Analyst separate predictions are made using input data from each measurement site with available wind climate data. This means you can make changes to your initiation strategy without re-running the wind flow calculation.

After you make a change to an initiation region you can recalculate the mean wind speed map layers by clicking the "Re-calculate mean wind speed map" button. Turbine wind speeds will update automatically.

By default, predictions at a turbine location are associated with the closest measurement site but you can overide this with the following methods:

Initiation mode	description
Initiation region or closest mast	This is the default initiation mode for any turbine. When the turbine is outside of the initiation region inputs from the closest masurement site are selected. When inside the initiation region inputs from the measurement site associated with that initation region are selected
Manually specified measurement site	Allows you to choose the initiation mast for a turbine, overriding initiation regions drawn on the map.
Nearest measurement site	Ignores any initiation regions and takes the closest mast.

Note

When you import a wind farm from another workbook all imported turbines use the manually specified measurement site which is set as the initiation measurement site from the donor workbook.

Tip

Sort the table of turbines by wind speed. If you see any turbines with a zero wind speed prediction the flow model is invalid.

This could be because there is no target wind resource prediction to cover that turbine location on the associated the measurement site. This can particularly be an issue when importing data from an external flow model. You can see the point and target location flow data on each measurement site in the flow model review task to investigate these issues.