8000 Add noct_sam cell temperature model to PVSystem, ModelChain by cwhanse · Pull Request #1195 · pvlib/pvlib-python · GitHub
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Add noct_sam cell temperature model to PVSystem, ModelChain #1195

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Merged
merged 15 commits into from
Mar 15, 2021
Merged

Add noct_sam cell temperature model to PVSystem, ModelChain #1195

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74800b0
add ModelChain, PVSystem methods
cwhanse Mar 12, 2021
2fbd304
first cut at pvsystem tests
cwhanse Mar 12, 2021
c3175b0
fix iterable, called_once_with in test
cwhanse Mar 13, 2021
64b16bf
derp
cwhanse Mar 13, 2021
e176da8
handling of optional argument, misspelling
cwhanse Mar 13, 2021
5608f9a
mimic ModelChain tests to noct_sam
cwhanse Mar 13, 2021
4a1dea3
add required params to test fixture
cwhanse Mar 13, 2021
37ffb87
fix key value
cwhanse Mar 13, 2021
aab7d96
complete test spec
cwhanse Mar 13, 2021
3b50f1a
complete test coverage, whatsnew
cwhanse Mar 13, 2021
3616e82
docstring work
cwhanse Mar 13, 2021
dcb6fbc
additions to api
cwhanse Mar 13, 2021
84a452c
docstring reverts, raise if missing arg
cwhanse Mar 14, 2021
2664783
add types to method test
cwhanse Mar 15, 2021
9613bb8
edits from review
cwhanse Mar 15, 2021
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docstring reverts, raise if missing arg
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@cwhanse
cwhanse committed Mar 14, 2021
commit 84a452c27302d44bf317af8b964393fa02992973
30 changes: 20 additions & 10 deletions pvlib/pvsystem.py
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Original file line number Diff line number Diff line change
Expand Up @@ -739,7 +739,7 @@ def fuentes_celltemp(self, poa_global, temp_air, wind_speed):

Returns
-------
numeric or tuple of numeric
temperature_cell : Series or tuple of Series
The modeled cell temperature [C]

Notes
Expand Down Expand Up @@ -788,22 +788,22 @@ def noct_sam_celltemp(self, poa_global, temp_air, wind_speed,

Parameters
----------
poa_global : pandas Series or tuple of Series
Total incident irradiance [W/m^2]
poa_global : numeric or tuple of numeric
Total incident irradiance in W/m^2.

temp_air : pandas Series or tuple of Series
Ambient dry bulb temperature [C]
temp_air : numeric or tuple of numeric
Ambient dry bulb temperature in degrees C.

wind_speed : pandas Series or tuple of Series
Wind speed [m/s]
wind_speed : numeric or tuple of numeric
Wind speed in m/s at a height of 10 meters.

effective_irradiance : pandas Series, tuple of Series or None.
effective_irradiance : numeric, tuple of numeric or None.
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Suggested change
effective_irradiance : numeric, tuple of numeric or None.
effective_irradiance : numeric, tuple of numeric, or None.

The irradiance that is converted to photocurrent. If None,
assumed equal to ``poa_global``. [W/m^2]

Returns
-------
numeric or tuple of numeric
temperature_cell : numeric or tuple of numeric
The modeled cell temperature [C]

Notes
Expand All @@ -829,9 +829,19 @@ def noct_sam_celltemp(self, poa_global, temp_air, wind_speed,

def _build_kwargs_noct_sam(array):
temp_model_kwargs = _build_kwargs([
'noct', 'eta_m_ref', 'transmittance_absorptance',
'transmittance_absorptance',
'array_height', 'mount_standoff'],
array.temperature_model_parameters)
try:
temp_model_kwargs['noct'] = \
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Suggested change
temp_model_kwargs['noct'] = \
# noct_sam required args.
# bundled with kwargs for simplicity
temp_model_kwargs['noct'] = \

array.temperature_model_parameters['noct']
temp_model_kwargs['eta_m_ref'] = \
array.temperature_model_parameters['eta_m_ref']
except KeyError:
msg = ('Parameter noct and eta_m_ref are required.'
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Suggested change
msg = ('Parameter noct and eta_m_ref are required.'
msg = ('Parameters noct and eta_m_ref are required.'

' Found {} in temperature_model_parameters.'
.format(array.temperature_model_parameters))
raise KeyError(msg)
return temp_model_kwargs
return tuple(
temperature.noct_sam(
Expand Down
8 changes: 8 additions & 0 deletions pvlib/tests/test_pvsystem.py
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Expand Up @@ -522,6 +522,14 @@ def test_PVSystem_noct_celltemp(mocker):
assert_allclose(out, expected)


def test_PVSystem_noct_celltemp_error():
poa_global, temp_air, wind_speed, eta_m_ref = (1000., 25., 1., 0.2)
temp_model_params = {'eta_m_ref': eta_m_ref}
system = pvsystem.PVSystem(temperature_model_parameters=temp_model_params)
with pytest.raises(KeyError):
system.noct_sam_celltemp(poa_global, temp_air, wind_speed)


@pytest.mark.parametrize("celltemp",
[pvsystem.PVSystem.faiman_celltemp,
pvsystem.PVSystem.pvsyst_celltemp,
Expand Down
0