Merge pull request #302 from PyPSA/minpartload

add min part load for FT and methanolisation via p_min_pu

config.default.yaml

@@ -261,6 +261,8 @@ sector:
     - nearshore  # within 50 km of sea
     # - offshore
   ammonia: false # can be false (no NH3 carrier), true (copperplated NH3), "regional" (regionalised NH3 without network)
+  min_part_load_fischer_tropsch: 0.9 # p_min_pu
+  min_part_load_methanolisation: 0.5 # p_min_pu
   use_fischer_tropsch_waste_heat: true
   use_fuel_cell_waste_heat: true
   electricity_distribution_grid: true

doc/release_notes.rst

@@ -65,6 +65,8 @@ incorporates retrofitting options to hydrogen.
 
 * Add option for BtL (Biomass to liquid fuel/oil) with and without CC
 
+* Add option for minimum part load for Fischer-Tropsch plants (default: 90%) and methanolisation plants (default: 50%).
+
 * Units are assigned to the buses. These only provide a better understanding. The specifications of the units are not taken into account in the optimisation, which means that no automatic conversion of units takes place.
 
 * Option ``retrieve_sector_databundle`` to automatically retrieve and extract data bundle.

scripts/prepare_sector_network.py

@@ -2227,6 +2227,7 @@ def add_industry(n, costs):
             bus3=spatial.co2.nodes,
             carrier="methanolisation",
             p_nom_extendable=True,
+            p_min_pu=options.get("min_part_load_methanolisation", 0),
             capital_cost=costs.at["methanolisation", 'fixed'] * options["MWh_MeOH_per_MWh_H2"], # EUR/MW_H2/a
             lifetime=costs.at["methanolisation", 'lifetime'],
             efficiency=options["MWh_MeOH_per_MWh_H2"],
@@ -2334,6 +2335,7 @@ def add_industry(n, costs):
         capital_cost=costs.at["Fischer-Tropsch", 'fixed'] * costs.at["Fischer-Tropsch", 'efficiency'], # EUR/MW_H2/a
         efficiency2=-costs.at["oil", 'CO2 intensity'] * costs.at["Fischer-Tropsch", 'efficiency'],
         p_nom_extendable=True,
+        p_min_pu=options.get("min_part_load_fischer_tropsch", 0),
         lifetime=costs.at['Fischer-Tropsch', 'lifetime']
     )