Add notebook to create curve equations and export for NRWAL

[rafmudaf]

Curve Generator & NRWAL Export

This pull request adds a Jupyter Notebook that allows the user to create a cost parameterization with ORBIT.ParametricManager, fit a curve to the data, and export the curve function to the NRWAL format. The notebook includes instructions and general documentation, a library of curve fit functions, a data structure to encapsulate the low-level functionality, and a set of example blocks. For more information, see the first block in the notebook.

The notebook was created with the goal of identifying the spatially dependent variables in cost equations for offshore wind farm CapEx components. The design-phase components of the CapEx breakdown are included:

• Array system
• Export system
• Offshore substation
• Mooring system
• Substructure

The included blocks follow the following general workflow:

1. Create the CostFunction object with the ORBIT configuration for the parameterization
2. Run ORBIT via ORBIT.ParametricManager
3. Fit a curve (or multiple) to determine the best fit without overfitting
4. Plot the data and curves
5. Export the curve equations to a NRWAL-compatible file

Considerations

The ORBIT model parameter names are mostly different from the NRWAL parameter names. The NRWAL parameters are listed in the docs, and a table of the ORBIT to NRWAL mapping is below.

• The missing NRWAL variables need to still be determined.

ORBIT	NRWAL
site.depth	depth
site.mean_windspeed	None
site.distance_to_landfall	dist_s_to_l
mooring_system_design.draft_depth	None
array_system_design.touchdown_distance	None
array_system_design.floating_cable_depth	None

[rafmudaf]

@RHammond2 @nRiccobo I included some information in the PR description, but the majority of the information is in the intro block of the Jupyter Notebook. Please let me know if you have any questions or feedback.

[nRiccobo]

Since there is no real code modifications, I'm going to go ahead and merge in ahead of our next release. This example will be useful for users who need information from ORBIT in NRWL. Thanks for adding this example!!