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Links ramp_start_up_limit not behaving as expected #592

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pmcwhannel opened this issue Mar 31, 2023 · 1 comment
Open
1 task

Links ramp_start_up_limit not behaving as expected #592

pmcwhannel opened this issue Mar 31, 2023 · 1 comment
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bug

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@pmcwhannel
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pmcwhannel commented Mar 31, 2023 •
edited

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Describe the Bug

Seems the ramp_limit_start_up for link components is not working as intended. I have tried rerunning the the contents of test_link_unit_commitment(api) with the addition of the attribute ramp_limit_start_up=0.01 and the output corresponding to OCGT does not change. Code is below to reproduce.

Thanks for any help in advance.

Code

n = pypsa.Network()

snapshots = range(4)

n.set_snapshots(snapshots)

n.madd("Bus", ["gas", "electricity"])

n.add("Generator", "gas", bus="gas", marginal_cost=10, p_nom=20000)

n.add(
    "Link",
    "OCGT",
    bus0="gas",
    bus1="electricity",
    committable=True,
    p_min_pu=0.1,
    efficiency=0.5,
    up_time_before=0,
    ramp_limit_start_up=0.01, # CHANGE IS HERE
    min_up_time=3,
    start_up_cost=3333,
    p_nom=12000,
)

n.add(
    "Generator",
    "wind",
    bus="electricity",
    p_nom=800,
)

n.add("Load", "load", bus="electricity", p_set=[4000, 6000, 800, 5000])

n.optimize()

Error Message

N/A.
@pmcwhannel pmcwhannel added the bug label Mar 31, 2023
@fneum
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fneum commented Jul 23, 2023

Confirmed bug. (Even when setting down_time_before=1 as well).

@lisazeyen lisazeyen mentioned this issue Jul 24, 2023
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Fix links ramp up start limit PyPSA/PyPSA
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@fneum @pmcwhannel