Constraints

Boundary constraints

XYBoundaryConstraint

class topfarm.constraint_components.boundary.XYBoundaryConstraint(boundary, boundary_type='convex_hull', units=None, relaxation=False, **kwargs)

__init__(boundary, boundary_type='convex_hull', units=None, relaxation=False, **kwargs)

Initialize XYBoundaryConstraint

Parameters:

• boundary (array_like (n,2) or list of tuples (array_like (n,2), boolean)) – boundary coordinates. If boundary is array_like (n,2) it indicates a single boundary and can be used with boundary types: ‘convex_hull’, ‘polygon’, ‘rectangle’,’square’. If boundary is list of tuples (array_like (n,2), boolean), it is multiple boundaries where the boolean is 1 for inclusion zones and 0 for exclusion zones and can be used with the boundary type: ‘multi_polygon’.

• boundary_type ('convex_hull', 'polygon', 'rectangle','square') –

  • ‘convex_hull’ (default): Convex hul around boundary points

  • ’polygon’: Polygon boundary (may be non convex). Less suitable for gradient-based optimization

  • ’rectangle’: Smallest axis-aligned rectangle covering the boundary points

  • ’square’: Smallest axis-aligned square covering the boundary points

  • ’multi_polygon’: Mulitple polygon boundaries incl. exclusion zones (may be non convex).

  • ’turbine_specific’: Set of multiple polygon boundaries that depend on the wind turbine type.

CircleBoundaryConstraint

class topfarm.constraint_components.boundary.CircleBoundaryConstraint(center, radius)

__init__(center, radius)

Initialize CircleBoundaryConstraint

Parameters:

• center ((float, float)) – center position (x,y)

• radius (int or float) – circle radius

Other constraints

SpacingConstraint

class topfarm.constraint_components.spacing.SpacingConstraint(min_spacing, units=None, aggregation_function=None, full_aggregation=False, name='spacing_comp')

__init__(min_spacing, units=None, aggregation_function=None, full_aggregation=False, name='spacing_comp')

Initialize SpacingConstraint

Parameters:

• min_spacing (int or float) – Minimum spacing between turbines [m]

• aggregation_function (topfarm.utils.AggregationFunction or None) – if None: compute returns all wt-wt spacings (n_wt *(n_wt-1))/2 if AggregationFunction: compute returns an aggregated (minimum) spacing