def test_StaticCPVSystem_get_iam_interp():
static_cpvsystem = cpvsystem.StaticCPVSystem(
module_parameters=mod_params_cpv)
iam = static_cpvsystem.get_iam(42, iam_model='interp')
assert np.round(iam, 4) == 0.814
def test_StaticCPVSystem_get_iam_ashrae():
static_cpvsystem = cpvsystem.StaticCPVSystem(
module_parameters=mod_params_cpv)
aoi = static_cpvsystem.get_aoi(30, 225)
iam = static_cpvsystem.get_iam(aoi, iam_model='ashrae')
assert np.round(iam, 4) == 0.8917
def test_StaticCPVSystem_energy_daily(dia, energy):
filename = Path(__file__).resolve().parent / dia
meteo = pd.read_csv(filename,
sep='\t',
index_col='yyyy/mm/dd hh:mm',
parse_dates=True)
meteo.index = meteo.index.tz_localize('Europe/Madrid')
location = pvlib.location.Location(latitude=40.4,
longitude=-3.7,
altitude=695,
tz='Europe/Madrid')
static_cpv_sys = cpvsystem.StaticCPVSystem(
surface_tilt=30,
surface_azimuth=180,
module=None,
module_parameters=mod_params_cpv,
temperature_model_parameters=pvlib.temperature.
TEMPERATURE_MODEL_PARAMETERS['pvsyst']['insulated'],
modules_per_string=1,
strings_per_inverter=1,
inverter=None,
inverter_parameters=None,
racking_model="insulated",
losses_parameters=None,
name=None,
)
meteo['dii'] = pvlib.irradiance.beam_component(
static_cpv_sys.surface_tilt,
static_cpv_sys.surface_azimuth,
solar_zenith=location.get_solarposition(meteo.index).zenith,
solar_azimuth=location.get_solarposition(meteo.index).azimuth,
dni=meteo['Bn'])
celltemp = static_cpv_sys.pvsyst_celltemp(meteo['dii'],
meteo['Temp. Ai 1'],
meteo['V.Vien.1'])
diode_parameters = static_cpv_sys.calcparams_pvsyst(meteo['dii'], celltemp)
dc = static_cpv_sys.singlediode(*diode_parameters)
uf_am = static_cpv_sys.get_am_util_factor(airmass=location.get_airmass(
meteo.index).airmass_absolute, )
uf_ta = static_cpv_sys.get_tempair_util_factor(
temp_air=meteo['Temp. Ai 1'], )
uf_am_at = uf_am * mod_params_cpv['weight_am'] + \
uf_ta * mod_params_cpv['weight_temp']
uf_global = uf_am_at # since uf_aoi was deprecated, it's no more applied in this test
assert (dc['p_mp'] * uf_global).sum() == energy
def test_StaticCPVSystem_get_effective_irradiance():
static_cpvsystem = cpvsystem.StaticCPVSystem(
surface_tilt=32, surface_azimuth=135, module_parameters=mod_params_cpv)
times = pd.date_range(start='20160101 1200-0700',
end='20160101 1800-0700',
freq='6H')
location = pvlib.location.Location(latitude=32, longitude=-111)
solar_position = location.get_solarposition(times)
dni = pd.Series([900, 0], index=times)
eff_irr = static_cpvsystem.get_effective_irradiance(
solar_position['apparent_zenith'], solar_position['azimuth'], dni)
expected = pd.Series(data=np.array([637.964408, 0.0]), index=times)
pd.testing.assert_series_equal(eff_irr, expected, rtol=0.0001)
def test_StaticCPVSystem_energy_2019_05(data, energy=90509.11811618837):
location = pvlib.location.Location(latitude=40.4,
longitude=-3.7,
altitude=695,
tz='Europe/Madrid')
solar_zenith = location.get_solarposition(data.index).zenith
solar_azimuth = location.get_solarposition(data.index).azimuth
static_cpv_sys = cpvsystem.StaticCPVSystem(
surface_tilt=30,
surface_azimuth=180,
module=None,
module_parameters=mod_params_cpv,
modules_per_string=1,
strings_per_inverter=1,
inverter=None,
inverter_parameters=None,
racking_model="insulated",
losses_parameters=None,
name=None,
)
data['aoi'] = static_cpv_sys.get_aoi(solar_zenith, solar_azimuth)
data['dii_effective'] = data['dii'] * pvlib.iam.ashrae(data['aoi'], b=0.7)
diode_parameters_cpv = static_cpv_sys.calcparams_pvsyst(
data['dii_effective'], data['temp_cell_35'])
dc_cpv = static_cpv_sys.singlediode(*diode_parameters_cpv)
airmass_absolute = location.get_airmass(data.index).airmass_absolute
# OJO uf_global NO incluye uf_aoi!!
uf_global = static_cpv_sys.get_global_utilization_factor(
airmass_absolute, data['temp_air'])
assert (dc_cpv['p_mp'] * uf_global).sum() == energy
def test_StaticCPVSystem_get_aoi():
static_cpvsystem = cpvsystem.StaticCPVSystem(surface_tilt=32,
surface_azimuth=135)
aoi = static_cpvsystem.get_aoi(30, 225)
assert np.round(aoi, 4) == 42.7408
def test_StaticHybridSystem_composicion_2019_05(data):
location = pvlib.location.Location(latitude=40.4,
longitude=-3.7,
altitude=695,
tz='Europe/Madrid')
solar_zenith = location.get_solarposition(data.index).zenith
solar_azimuth = location.get_solarposition(data.index).azimuth
# StaticCPVSystem
static_cpv_sys = cpvsystem.StaticCPVSystem(
surface_tilt=30,
surface_azimuth=180,
module=None,
module_parameters=mod_params_cpv,
temperature_model_parameters=pvlib.temperature.
TEMPERATURE_MODEL_PARAMETERS['pvsyst']['insulated'],
modules_per_string=1,
strings_per_inverter=1,
inverter=None,
inverter_parameters=None,
racking_model="insulated",
losses_parameters=None,
name=None,
)
data['aoi'] = static_cpv_sys.get_aoi(solar_zenith, solar_azimuth)
data['dii_effective'] = data['dii'] * pvlib.iam.ashrae(data['aoi'], b=0.7)
diode_parameters_cpv = static_cpv_sys.calcparams_pvsyst(
data['dii_effective'], data['temp_cell_35'])
dc_cpv = static_cpv_sys.singlediode(*diode_parameters_cpv)
airmass_absolute = location.get_airmass(data.index).airmass_absolute
# OJO uf_global NO incluye uf_aoi!!
uf_global = static_cpv_sys.get_global_utilization_factor(
airmass_absolute, data['temp_air'])
# StaticFlatPlateSystem
static_flatplate_sys = cpvsystem.StaticFlatPlateSystem(
surface_tilt=30,
surface_azimuth=180,
module=None,
module_parameters=mod_params_flatplate,
modules_per_string=1,
strings_per_inverter=1,
inverter=None,
inverter_parameters=None,
racking_model="insulated",
losses_parameters=None,
name=None,
)
# el aoi de difusa es el mismo que cpv
data['poa_flatplate_static'] = static_flatplate_sys.get_irradiance(
solar_zenith,
solar_azimuth,
aoi=data['aoi'],
# aoi_limit=55, # ahora pasa por module_params
# dii_effective no aplica, ya que si no el calculo de difusa es artificialmente alto!
dii=data['dii'],
gii=data['gii'])
celltemp_flatplate = static_flatplate_sys.pvsyst_celltemp(
data['poa_flatplate_static'], data['temp_air'], data['wind_speed'])
diode_parameters_flatplate = static_flatplate_sys.calcparams_pvsyst(
data['poa_flatplate_static'], celltemp_flatplate)
dc_flatplate = static_flatplate_sys.singlediode(
*diode_parameters_flatplate)
# StaticHybridSystem
static_hybrid_sys = cpvsystem.StaticHybridSystem(
surface_tilt=30,
surface_azimuth=180,
module_cpv=None,
module_flatplate=None,
module_parameters_cpv=mod_params_cpv,
module_parameters_flatplate=mod_params_flatplate,
modules_per_string=1,
strings_per_inverter=1,
inverter=None,
inverter_parameters=None,
racking_model="insulated",
losses_parameters=None,
name=None,
)
# get_effective_irradiance
dii_effective_h, poa_flatplate_static_h = static_hybrid_sys.get_effective_irradiance(
solar_zenith,
solar_azimuth,
dni=data['dni'],
dii=
None, # dii_effective no aplica, ya que si no el calculo de difusa es artificialmente alto!
gii=data['gii'],
)
assert np.allclose(data['dii_effective'], dii_effective_h, atol=1) is True
assert np.allclose(
data['poa_flatplate_static'], poa_flatplate_static_h, atol=1) is True
# pvsyst_celltemp
_, celltemp_flatplate_h = static_hybrid_sys.pvsyst_celltemp(
dii=dii_effective_h,
poa_flatplate_static=poa_flatplate_static_h,
temp_air=data['temp_air'],
wind_speed=data['wind_speed'])
assert np.allclose(celltemp_flatplate, celltemp_flatplate_h,
atol=1) is True
# calcparams_pvsyst
diode_parameters_cpv_h, diode_parameters_flatplate_h = static_hybrid_sys.calcparams_pvsyst(
dii=dii_effective_h,
poa_flatplate_static=poa_flatplate_static_h,
temp_cell_cpv=data['temp_cell_35'],
temp_cell_flatplate=celltemp_flatplate_h,
)
for diode_param, diode_param_h in zip(diode_parameters_cpv,
diode_parameters_cpv_h):
assert np.allclose(diode_param, diode_param_h, atol=10) is True
# singlediode
airmass_absolute = location.get_airmass(data.index).airmass_absolute
dc_cpv_h, dc_flatplate_h = static_hybrid_sys.singlediode(
diode_parameters_cpv_h, diode_parameters_flatplate_h)
for dc_param in dc_cpv:
assert np.allclose(dc_cpv[dc_param], dc_cpv_h[dc_param],
atol=1) is True
for dc_param in dc_cpv:
assert np.allclose(dc_flatplate[dc_param].fillna(0),
dc_flatplate_h[dc_param].fillna(0),
atol=100) is True
# uf_global
airmass_absolute = location.get_airmass(data.index).airmass_absolute
uf_global_h = static_hybrid_sys.get_global_utilization_factor_cpv(
airmass_absolute, data['temp_air'])
assert np.allclose(uf_global, uf_global_h, atol=0.001) is True