Investigate distribute_clusters to be used also for single countries

[davide-f]

Describe the feature you'd like to see

There is the need to check if the following function shall be triggered even when a single country is used:

pypsa-earth/scripts/cluster_network.py

Lines 458 to 468 in 58adc65

	if n.buses.country.nunique() > 1:
	n_clusters = distribute_clusters(
	inputs,
	build_shape_options,
	country_list,
	distribution_cluster,
	n,
	n_clusters,
	focus_weights=focus_weights,
	solver_name=solver_name,
	)

The reasoning is that we have subnetworks even in a single country and there is the need to distribute clusters among them as well.

[ekatef]

@davide-f thanks for tracking this issue

I wonder if that can be a reason of a recently observed AssertionError for the lines belonging to different countries...

[davide-f]

@davide-f thanks for tracking this issue

I wonder if that can be a reason of a recently observed AssertionError for the lines belonging to different countries...

I though so, but not. I haven't found the issue for it but #1330 solves that. It is soon to be merged :)
We shall drop the column "country" from lines dataframe

[ekatef]

#1330

@davide-f thanks for tracking this issue
I wonder if that can be a reason of a recently observed AssertionError for the lines belonging to different countries...

I though so, but not. I haven't found the issue for it but #1330 solves that. It is soon to be merged :) We shall drop the column "country" from lines dataframe.

Ahh, I see! Thanks a lot for the update, and taking care about that :)

A great insight about the country column. It appears the key to find a workaround for #1311 can be also removing some columns...