bsrn.qc.tracker.tracker_off_test#

bsrn.qc.tracker.tracker_off_test(ghi, bni, zenith, ghi_extra=None, ghi_clear=None, dhi_clear=None, bni_clear=None)[source]#

Check if the solar tracker is off by comparing measured and clear-sky irradiances [1].

Parameters:

  • ghi (numeric or Series) – Measured global horizontal irradiance ($G_h$). [W/m^2]

  • bni (numeric or Series) – Measured beam normal irradiance ($B_n$). [W/m^2]

  • zenith (numeric or Series) – Solar zenith angle ($Z$). [degrees]

  • ghi_extra (numeric or Series, optional) – Extraterrestrial horizontal irradiance ($E_0$). [W/m^2]

  • ghi_clear (numeric or Series, optional) – Reference clear-sky global horizontal irradiance ($G_{hc}$). [W/m^2]

  • dhi_clear (numeric or Series, optional) – Reference clear-sky diffuse horizontal irradiance ($D_{hc}$). [W/m^2]

  • bni_clear (numeric or Series, optional) – Reference clear-sky beam normal irradiance ($B_{nc}$). [W/m^2]

Returns:

flags – Boolean flags (True = Pass). [bool]

Return type:

Series or ndarray

Raises:

ValueError – If ghi_clear is not provided and ghi_extra is also missing.

References