8000 Issue #2245 Infinite sheds beam fraction on ground zenith guardrail syntax bug by jason-rpkt · Pull Request #2359 · pvlib/pvlib-python · GitHub
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Issue #2245 Infinite sheds beam fraction on ground zenith guardrail syntax bug #2359

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Merged
merged 8 commits into from
Feb 4, 2025
Merged

Issue #2245 Infinite sheds beam fraction on ground zenith guardrail syntax bug #2359

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62045a5
Issue #2245
jason-rpkt Jan 23, 2025
23dd57e
Issue #2245 - Linting/ PEP8
jason-rpkt Jan 24, 2025
59d6581
Revert "Issue #2245 utils.py"
jason-rpkt Jan 27, 2025
fb84dfc
Merge branch 'pvlib:main' into main
jason-rpkt Jan 28, 2025
dae7326
Update from solar_zenith to ghi
jason-rpkt Jan 28, 2025
dbb8afc
series input for ghi in test_infinite_sheds.py
jason-rpkt Feb 4, 2025
7bd91b3
Merge branch 'main' into main
cwhanse Feb 4, 2025
eb88655
Update docs/sphinx/source/whatsnew/v0.11.3.rst
cwhanse Feb 4, 2025
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series input for ghi in test_infinite_sheds.py
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@jason-rpkt
jason-rpkt committed Feb 4, 2025
commit dbb8afcb3be6c816ce23b08abacc40f6eb942e31
3 changes: 2 additions & 1 deletion docs/sphinx/source/whatsnew/v0.11.3.rst
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Expand Up @@ -10,7 +10,8 @@ Deprecations

Enhancements
~~~~~~~~~~~~
Fix syntax for unshaded ground fraction (:issue:`2245`, :pull:`2359`)
Fix bug in :py:func:`pvlib.bifacial.get_irradiance_poa` which may had yielded non-zero ground
irradiance with sun below horizon (:issue:`2245`, :pull:`2359`)

Documentation
~~~~~~~~~~~~~
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5 changes: 2 additions & 3 deletions pvlib/bifacial/infinite_sheds.py
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Expand Up @@ -260,9 +260,8 @@ def get_irradiance_poa(surface_tilt, surface_azimuth, solar_zenith,
Returns
-------
output : dict or DataFrame
Output is a "pandas.DataFrame" when "ghi" is a Series.
Otherwise it is a dict of "numpy.ndarray"
See Issue #2245
Output is a ``pandas.DataFrame`` when ``ghi`` is a Series.
Otherwise it is a dict of ``numpy.ndarray``
See Notes for descriptions of content.

Notes
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2 changes: 1 addition & 1 deletion pvlib/bifacial/utils.py
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Expand Up @@ -87,8 +87,8 @@ def _unshaded_ground_fraction(surface_tilt, surface_azimuth, solar_zenith,
surface_azimuth)
f_gnd_beam = 1.0 - np.minimum(
1.0, gcr * np.abs(cosd(surface_tilt) + sind(surface_tilt) * tan_phi))
f_gnd_beam = np.where(solar_zenith > max_zenith, 0., f_gnd_beam)
# [1], Eq. 4
f_gnd_beam = np.where(solar_zenith > max_zenith, 0., f_gnd_beam)
return f_gnd_beam # 1 - min(1, abs()) < 1 always


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1 change: 1 addition & 0 deletions pvlib/tests/bifacial/test_infinite_sheds.py
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Expand Up @@ -130,6 +130,7 @@ def test_get_irradiance_poa():
# series inputs
surface_tilt = pd.Series(surface_tilt)
surface_azimuth = pd.Series(data=surface_azimuth, index=surface_tilt.index)
ghi = pd.Series(data=ghi, index=surface_tilt.index)
solar_zenith = pd.Series(solar_zenith, index=surface_tilt.index)
solar_azimuth = pd.Series(data=solar_azimuth, index=surface_tilt.index)
expected_diffuse = pd.Series(
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