.. _calculations_park:

Park Calculation Service
========================

CalcParkService gives access to the PARK module.
This service is more complex than the other calcualtion services.

It contains the two function, ``CalcParkService.GetParkCalc`` for getting a park objects and
``CalcParkService.SetParkCalc`` for passing it back to windPRO.

``CalcParkService.GetTApiWtgId()`` gets objects that are needed to connects wind turbine generator objects with the
PARK calculation (similar to ``factory.TApiWtgId()``). The connection is done by adding the Handle of the WTG objects.
A list of these TApiWtgId objects needs to be combined into ``factory.TApiObjectHandles()`` and added to
``CalcParkService.NewWtgs`` or ``CalcParkService.ExistWtgs``.

There is access to the time varying calculation where TI is used to dynamically set the wake decay constants.
``CalcParkService.GetWdcTiSetup`` and ``CalcParkService.SetWdcTiSetup`` for getting and setting those properties
respectively.

Find below an example how to use PARK calculations:

.. literalinclude:: ../../../python/examples/fromDocs/calculations/park_calculation.py

A second example is provided using scripting to repeat PARK calculations to find the marginal AEP for each turbine.
This is done by repeating the PARK calculation removing one turbine at a time.

.. literalinclude:: ../../../python/examples/fromDocs/calculations/park_calculation_marginal_AEP.py