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Reduce retrofit potential in myopic optimization (#1258)

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* reduce potential of gas network that can be retrofitted to H2 when gas grid is not resolved in myopic optimization

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Toni Seibold 2024-09-25 13:23:50 +02:00 committed by GitHub
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1 changed files with 29 additions and 11 deletions
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scripts/add_brownfield.py
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@ -87,30 +87,48 @@ def add_brownfield(n, n_p, year):
n.import_series_from_dataframe(c.pnl[tattr], c.name, tattr)
# deal with gas network
pipe_carrier = ["gas pipeline"]
if snakemake.params.H2_retrofit:
# subtract the already retrofitted from today's gas grid capacity
# subtract the already retrofitted from the maximum capacity
h2_retrofitted_fixed_i = n.links[
(n.links.carrier == "H2 pipeline retrofitted")
& (n.links.build_year != year)
].index
gas_pipes_i = n.links[n.links.carrier.isin(pipe_carrier)].index
CH4_per_H2 = 1 / snakemake.params.H2_retrofit_capacity_per_CH4
fr = "H2 pipeline retrofitted"
to = "gas pipeline"
# today's pipe capacity
pipe_capacity = n.links.loc[gas_pipes_i, "p_nom"]
h2_retrofitted = n.links[
(n.links.carrier == "H2 pipeline retrofitted")
& (n.links.build_year == year)
].index
# pipe capacity always set in prepare_sector_network to todays gas grid capacity * H2_per_CH4
# and is therefore constant up to this point
pipe_capacity = n.links.loc[h2_retrofitted, "p_nom_max"]
# already retrofitted capacity from gas -> H2
already_retrofitted = (
n.links.loc[h2_retrofitted_fixed_i, "p_nom"]
.rename(lambda x: x.split("-2")[0].replace(fr, to) + f"-{year}")
.rename(lambda x: x.split("-2")[0] + f"-{year}")
.groupby(level=0)
.sum()
)
remaining_capacity = pipe_capacity - CH4_per_H2 * already_retrofitted.reindex(
remaining_capacity = pipe_capacity - already_retrofitted.reindex(
index=pipe_capacity.index
).fillna(0)
n.links.loc[gas_pipes_i, "p_nom"] = remaining_capacity
n.links.loc[h2_retrofitted, "p_nom_max"] = remaining_capacity
# reduce gas network capacity
gas_pipes_i = n.links[n.links.carrier == "gas pipeline"].index
if not gas_pipes_i.empty:
# subtract the already retrofitted from today's gas grid capacity
pipe_capacity = n.links.loc[gas_pipes_i, "p_nom"]
fr = "H2 pipeline retrofitted"
to = "gas pipeline"
CH4_per_H2 = 1 / snakemake.params.H2_retrofit_capacity_per_CH4
already_retrofitted.index = already_retrofitted.index.str.replace(fr, to)
remaining_capacity = (
pipe_capacity
- CH4_per_H2
* already_retrofitted.reindex(index=pipe_capacity.index).fillna(0)
)
n.links.loc[gas_pipes_i, "p_nom"] = remaining_capacity
n.links.loc[gas_pipes_i, "p_nom_max"] = remaining_capacity
def disable_grid_expansion_if_limit_hit(n):