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link losses: exponential rather than linear model

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This commit is contained in:
Fabian Neumann 2023-08-07 14:31:19 +02:00
parent e4eff27e50
commit d7cb13246b
2 changed files with 18 additions and 10 deletions
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13
config/config.default.yaml
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@ -478,11 +478,14 @@ sector:
electricity_distribution_grid: true electricity_distribution_grid: true
electricity_distribution_grid_cost_factor: 1.0 electricity_distribution_grid_cost_factor: 1.0
electricity_grid_connection: true electricity_grid_connection: true
transmission_losses: transmission_efficiency:
# per 1000 km DC:
DC: 0 efficiency_static: 0.98
H2 pipeline: 0 efficiency_per_1000km: 0.977
gas pipeline: 0 H2 pipeline:
efficiency_per_1000km: 0.979
gas pipeline:
efficiency_per_1000km: 0.977
H2_network: true H2_network: true
gas_network: false gas_network: false
H2_retrofit: false H2_retrofit: false

15
scripts/prepare_sector_network.py
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@ -3280,22 +3280,27 @@ def set_temporal_aggregation(n, opts, solver_name):
return n return n
def lossy_bidirectional_links(n, carrier, losses_per_thousand_km=0.0): def lossy_bidirectional_links(n, carrier, efficiencies={}):
"Split bidirectional links into two unidirectional links to include transmission losses." "Split bidirectional links into two unidirectional links to include transmission losses."
carrier_i = n.links.query("carrier == @carrier").index carrier_i = n.links.query("carrier == @carrier").index
if not losses_per_thousand_km or carrier_i.empty: if not any(v != 1. for v in efficiencies.values()) or carrier_i.empty:
return return
efficiency_static = efficiencies.get("efficiency_static", 1)
efficiency_per_1000km = efficiencies.get("efficiency_per_1000km", 1)
logger.info( logger.info(
f"Specified losses for {carrier} transmission. Splitting bidirectional links." f"Specified losses for {carrier} transmission"
f"(static: {efficiency_static}, per 1000km: {efficiency_per_1000km})."
"Splitting bidirectional links."
) )
carrier_i = n.links.query("carrier == @carrier").index carrier_i = n.links.query("carrier == @carrier").index
n.links.loc[carrier_i, "p_min_pu"] = 0 n.links.loc[carrier_i, "p_min_pu"] = 0
n.links.loc[carrier_i, "efficiency"] = ( n.links.loc[carrier_i, "efficiency"] = (
1 - n.links.loc[carrier_i, "length"] * losses_per_thousand_km / 1e3 efficiency_static * efficiency_per_1000km ** (n.links.loc[carrier_i, "length"] / 1e3)
) )
rev_links = ( rev_links = (
n.links.loc[carrier_i].copy().rename({"bus0": "bus1", "bus1": "bus0"}, axis=1) n.links.loc[carrier_i].copy().rename({"bus0": "bus1", "bus1": "bus0"}, axis=1)
@ -3474,7 +3479,7 @@ if __name__ == "__main__":
if options["electricity_grid_connection"]: if options["electricity_grid_connection"]:
add_electricity_grid_connection(n, costs) add_electricity_grid_connection(n, costs)
for k, v in options["transmission_losses"].items(): for k, v in options["transmission_efficiency"].items():
lossy_bidirectional_links(n, k, v) lossy_bidirectional_links(n, k, v)
# Workaround: Remove lines with conflicting (and unrealistic) properties # Workaround: Remove lines with conflicting (and unrealistic) properties