swap_mutation

Replace occupied grid cells with unused ones. The number of
swaps is <code>max(min_swaps, Binomial(n, p))</code>, so each individual explores at
least <code>min_swaps</code> new cells (default 1). The number of turbines stays <code>n</code>.

The genetic algorithm is designed to optimize wind farms of any shape. Each layout is encoded as n unique grid-cell identifiers. It requires a predefined amount of turbines, a unified rotor radius and an average wind speed value for each incoming wind direction. A terrain effect model can be included that downloads an 'SRTM' elevation model and loads a Corine Land Cover raster to approximate surface roughness.

Sebastian Gatscha

windfarmGA

Genetic Algorithm for Wind Farm Layout Optimization

swap_mutation function

<dl><dt>ids</dt>
<dd>Integer matrix with <code>n</code> rows (turbines) and one column per
individual</dd>
<dt>grid_ids</dt>
<dd>All valid grid cell IDs</dd>
<dt>p</dt>
<dd>Mutation probability per turbine</dd>
<dt>seed</dt>
<dd>Set a seed for comparability. Default is <code>NULL</code></dd>
<dt>min_swaps</dt>
<dd>Minimum number of swaps per individual. Default is
<code>getOption("windfarmGA.min_swaps")</code> (1)</dd>
<dt>visit</dt>
<dd>Named visit counts per grid ID. Free cells with fewer visits
are more likely to be chosen. Default is <code>NULL</code> (uniform)</dd></dl>

Arguments

Swap mutation of turbine layouts — swap_mutation

<dl>

<dt>ids</dt>
<dd>Integer matrix with <code>n</code> rows (turbines) and one column per
individual</dd>


<dt>grid_ids</dt>
<dd>All valid grid cell IDs</dd>


<dt>p</dt>
<dd>Mutation probability per turbine</dd>


<dt>seed</dt>
<dd>Set a seed for comparability. Default is <code>NULL</code></dd>


<dt>min_swaps</dt>
<dd>Minimum number of swaps per individual. Default is
<code>getOption("windfarmGA.min_swaps")</code> (1)</dd>


<dt>visit</dt>
<dd>Named visit counts per grid ID. Free cells with fewer visits
are more likely to be chosen. Default is <code>NULL</code> (uniform)</dd>

</dl>

swap_mutation: Swap mutation of turbine layouts

Description

Usage

Value

Arguments

See Also

Examples