GB/T 30153-2013Technical requirement for solar energy resource real-time monitoring of photovoltaic power station (English PDF)

2.1 Photovoltaic power station photovoltaic (PV)

The use of photovoltaic cells photovoltaic effect, solar radiation directly into electrical energy generation system, generally comprises transformers, inverters

And a photovoltaic array, and related auxiliary facilities.

2.2 Total radiation

Horizontal surface in the 2pi solid angle of the received radiation and direct solar radiation and scatter.

2.3 Direct radiation

Radiation emitted from the inner surface of the day in and around a small solid angle.

Note. In general, direct insolation by the viewing angle of about 5 ° measured instrument. Thus, it includes part of the scattered radiation around the solar surface, which ring solar radiation.

2.4 Method to direct radiation

And the sun's rays on a plane perpendicular to the received direct radiation.

2.5 Scattered radiation

Solar radiation reflected or scattered by atmospheric clouds, from the sky 2pi solid angle to reach down to the ground in the form of short-wave radiation.

2.6 Irradiance

Objects in the unit time, the received radiant energy per unit area.

2.7 Total irradiance

The horizontal plane formed by the hemispherical total insolation to irradiance.

2.8 Direct radiation irradiance

Irradiance radiation directly on any given plane formation.

2.9 Method to direct radiation irradiance

Irradiance direct radiation on a plane perpendicular to the beam, also known as direct normal irradiance.