Error moving to Pypsa 1.0 - createmodel with multi_investment_periods

[Tobie Nortje]

HI,

1. I load the network from csv in to variable `network` and then

2. network.investment_periods  = [1]

when network.optimize.create_model(multi_investment_periods=True)  is called I get the following error wich worked up to 0.35.

xarray.structure.alignment.AlignmentError: cannot align objects on coordinate 'snapshot' because of conflicting indexes
first index: PandasIndex(Index([   (1, 2),    (1, 3),    (1, 4),    (1, 5),    (1, 6),    (1, 7),
          (1, 8),    (1, 9),   (1, 10),   (1, 11),
       ...
       (1, 8751), (1, 8752), (1, 8753), (1, 8754), (1, 8755), (1, 8756),
       (1, 8757), (1, 8758), (1, 8759), (1, 8760)],
      dtype='object', name='snapshot', length=8759))
second index: PandasIndex(MultiIndex([(1,    1),
            (1,    2),
            (1,    3),
            (1,    4),
            (1,    5),
            (1,    6),
            (1,    7),
            (1,    8),
            (1,    9),
            (1,   10),
            ...
            (1, 8751),
            (1, 8752),
            (1, 8753),
            (1, 8754),
            (1, 8755),
            (1, 8756),
            (1, 8757),
            (1, 8758),
            (1, 8759),
            (1, 8760)],
           name='snapshot', length=8760))
first variable: <xarray.IndexVariable 'snapshot' (snapshot: 8759)> Size: 70kB
array([(1, 2), (1, 3), (1, 4), ..., (1, 8758), (1, 8759), (1, 8760)],
      dtype=object)
second variable: <xarray.IndexVariable 'snapshot' (snapshot: 8760)> Size: 70kB
array([(1, 1), (1, 2), (1, 3), ..., (1, 8758), (1, 8759), (1, 8760)],
      dtype=object)

I have checked all the inputs and they are all the same shape as snapshots.csv

Any idea what could cause this?

regards
Tobie

[Tobie Nortje]

The full stack trace originates at  define_ramp_limit_constraints:

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "C:\Users\tobie\PycharmProjects\afripow-streamlit-gui\.venv\Lib\site-packages\pypsa\optimization\optimize.py", line 572, in create_model
    define_ramp_limit_constraints(n, sns, c, attr)
  File "C:\Users\tobie\PycharmProjects\afripow-streamlit-gui\.venv\Lib\site-packages\pypsa\optimization\constraints.py", line 697, in define_ramp_limit_constraints
    ramp_limit_up_ext = ramp_limit_up.reindex(
                        ^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\tobie\PycharmProjects\afripow-streamlit-gui\.venv\Lib\site-packages\xarray\core\dataarray.py", line 2218, in reindex
    return alignment.reindex(
           ^^^^^^^^^^^^^^^^^^
  File "C:\Users\tobie\PycharmProjects\afripow-streamlit-gui\.venv\Lib\site-packages\xarray\structure\alignment.py", line 984, in reindex
    aligner.align()
  File "C:\Users\tobie\PycharmProjects\afripow-streamlit-gui\.venv\Lib\site-packages\xarray\structure\alignment.py", line 559, in align
    self.align_indexes()
  File "C:\Users\tobie\PycharmProjects\afripow-streamlit-gui\.venv\Lib\site-packages\xarray\structure\alignment.py", line 432, in align_indexes
    update_dicts(key, idx, index_vars, False)
  File "C:\Users\tobie\PycharmProjects\afripow-streamlit-gui\.venv\Lib\site-packages\xarray\structure\alignment.py", line 369, in update_dicts
    raise AlignmentError(

[Fabian Hofmann]

Hey Tobie,

thanks for the message. For bug reports please use the Github plattform. There we can better track and discuss.

Best wishes,

Fabian Hofmann

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Dr. Fabian Hofmann 

Senior Energy System Modeller
Open Energy Transition
https://openenergytransition.org/

http://fabianhofmann.org/

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