What is the ten factors affecting solar photovoltaic power generation?

1. Solar energy resources in the photovoltaic power station under the condition of actual capacity must, the output of photovoltaic (pv) system is determined by the intensity of the radiation of the sun, solar radiation was positively related with power relations. The sun's radiation intensity, spectral feature is with meteorological conditions

1. Solar energy resources in the photovoltaic power station under the condition of actual capacity must, photovoltaic generating system is decided by the intensity of solar radiation, solar radiation and electricity were positively correlated. The sun radiation intensity and the spectral characteristics of the change according to the meteorological conditions. 2. Component installation method of the same area in radiation is different, different installation Angle of the slope can be by adjusting the Angle of the panels ( Stents with fixed adjustable) Or increase the tracking device ( Stents using tracking) To increase the slope. 3. Inverter capacity than inverter capacity than it is to point to the rated power of the inverter and the ratio of the capacity of the pv module. As a result of the pv module power passed to the inverter, there will be many links between cause loss reduction, and equipment such as inverters, box-type transformer cannot be run at full capacity, most of the time, therefore, the capacity of the pv modules should be slightly greater than the rated capacity of inverter. According to experience, the solar energy resources better region, photovoltaic modules: inverter = 1. 2:1 ratio is a good design. 4. Parts of series and parallel matching components in series is component of current differential current loss, and series and cib voltage loss caused by series of voltage difference. CNCA / CTS00X - 2014 'grid photovoltaic power station technical specification for performance testing and quality evaluation, Draft) Required components in series with the mismatch loss should not be more than 2%. 5. Components cover components including dust shield, shielding, grass, trees, snow panels and other buildings. Receive radiation shielding will reduce the components, and affect components of cooling, thus resulting in a decline in the power output of the components, and could lead to a hot spot. 6. Parts of the temperature rise, as the crystalline silicon cells reduce the open circuit voltage. In the twenty - 1 ℃, 100 ℃ range, every each battery voltage to reduce 2 mV. However, as the temperature rises, the current increases slightly. Generally speaking, the solar battery power and decreased with the increase of temperature, temperature coefficient of a typical power - 0. 35% / ℃, i. e. , battery temperature rise per 1 ℃, power reduction 0. 35%. 7. Component of power attenuation component power attenuation refers to the components of output power of light increases with time and gradually reduce the phenomenon. Component attenuation is related to the characteristics of the component itself. Attenuation phenomena can be roughly divided into three categories: suddenly element of power attenuation caused by destructive factors; Components of the initial light to decay; Component aging decay. CNCA / CTS00X - 2014 'grid photovoltaic power station technical specification for performance testing and quality evaluation: polysilicon components falling rate no more than two a year. No more than 3 5%, two years. 2%; Monocrystalline silicon components falling within one year should not exceed 3. Should not be more than 4 0% in two years. 2%. 8. Photovoltaic power generation systems stability of equipment operation equipment downtime directly affect the capacity of power station. For example, if the inverter can't stop the above communication equipment, power loss will be enormous. In addition, although the equipment is running, but poor performance, also can cause power loss.