add NEP Netzverstärkung

[JulianGeis]

Closes # (if applicable).

Changes proposed in this Pull Request

Checklist

• I tested my contribution locally and it works as intended.
• Code and workflow changes are sufficiently documented.
• Changed dependencies are added to envs/environment.yaml.
• Changes in configuration options are added in config/config.default.yaml.
• Changes in configuration options are documented in doc/configtables/*.csv.
• Sources of newly added data are documented in doc/data_sources.rst.
• A release note doc/release_notes.rst is added.

[JulianGeis]

I added the major Netzverstärkung lines from NEP as new lines to the network.
Data source: https://www.netzentwicklungsplan.de/nep-aktuell/netzentwicklungsplan-20372045-2023

Some of the lines would also replace already existing ones ("Ersatzneubau") others ("Zu/Umbeseilung") do not. This is not yet implemented. Reasons: The mapping seems to be quite hard and the replaced capacity is not very high such that it is reasonable to neglect it as a start.

Projects

Abb 62.pdf

In Pypsa (after add_electricity)

With 49 clusters:

• for 49 clusters additional 10 lines are build with a capacity of 5054.82 MVA each summing up to an additional capacity of 50548.2 MVA.

Assumptions

• If not mentioned otherwise the linetype I assumed is a Al/St 490/64 4-bundle 380.0 with 2 circuits resulting in s_nom of 5054.82 MVA

[lindnemi]

Great! However, default line type should be

https://github.com/PyPSA/PyPSA/blob/20aa4223a02323eaac50c7b892a18d0345193109/pypsa/standard_types/line_types.csv#L34