When the kmeans algorithm is used to cluster networks, this is not
deterministic by default. The result is that repeated runs of the
`simplify_network` and `cluster_network` rules can and usually do
produce different results that vary somewhat randomly. This makes
results less reproducible when given only a pypsa-eur configuration
file.
The fix is to supply a fixed random state to the k-means algorithm.
Assume you have 10 nodes that need to be distributed between 2 countries.
What can happen with some of the open source solvers is that one country
gets assigned to 9.01 (float) nodes, and the other one to 0.99.
Now using .astype(int) would lead to a node distribution of 0 and 9, as
the `astype(int)` function round down by default (0.99 -> 0). This assigned
zero value breaks the code in case open source solvers are used.
Gurobi somehow does deal with it.
* for now use n.snapshot_weightings.generators
* require pypsa master; use .objective for Nyears
* implement suggestions from code review
* add release note
* add option to use custom clustermaps from data folder
* adapt default config to custom busmap
* input file from Snakefile
* adapt input description
* add option to use custom clustermaps from data folder
* adapt default config to custom busmap
* input file from Snakefile
* adapt input description
* Snakefile: custom_busmap in cluster_network input is now csv
* cluster_network: custom_busmap is now read as csv file, adaptions of description
* simplify_network: adapt descriptions
* configfiles: add cutom_clustermaps switch
* unify clustarmap and busmap names
* unify clustermap and busmap names
* test/config: unify clustermap and busmap names
* cluster_network: make clustering_for_n_clusters compatible with simplify_network
* simplify_network: make compatible with changes in cluster_network.py
* Update scripts/cluster_network.py
* Update scripts/simplify_network.py
* Update scripts/simplify_network.py
* Update scripts/cluster_network.py
* Update scripts/cluster_network.py
* cluster_network: move custom_busmap flag to enable; simplify names
* cluster_network: move custom_busmap flag to enable; simplify names
* custom_busmap: add documentation
* cluster_network: add default for custom_busmap for compatibility with old configs
* cluster_network: add default for custom_busmap for compatibility with old configs
Co-authored-by: martha.frysztacki <eb5194@iai-esm003.iai.kit.edu>
Co-authored-by: Fabian Neumann <fabian.neumann@outlook.de>
