Here datasets and modelling issues for the long-distance transport of natural gas are listed.
Gas Infrastructure Europe
ENTSO-G capacities and maps
Compressibility, line pack (i.e. storage inside pipes), gas consumption of compressors, daily modelling, GCV
Transportnetzberechnung zur Feststellung der Erdgasversorgungssicherheit in Deutschland unter regulatorischem Einfluss - PhD Thesis of Jessica Rövekamp, 2014, TU Clausthal
Optimal Power Flow of Multiple Energy Carriers
https://www.eeh.ee.ethz.ch/uploads/tx_ethpublications/Arnold_DecomposedElectricityandNaturalGasOPF.pdf
http://www.diw.de/documents/publikationen/73/diw_01.c.425843.de/dp1317.pdf
https://wwz.unibas.ch/uploads/tx_x4epublication/Combined_dynamic_Abrell_Weigt_2014.05.pdf
linearised Weymouth equations in:
http://www.jstor.org/stable/41323248
Gas-electricity coupling in:
http://iiesi.org/assets/pdfs/iiesi_102_mccalley1.pdf
http://iiesi.org/assets/pdfs/101_mccalley_2.pdf