What are the factors affect the photovoltaic power station power generation?

1: solar radiation on the conversion efficiency of solar cell components under certain conditions, the output of photovoltaic (pv) system is determined by the radiation of the sun. Photovoltaic system for solar energy utilization efficiency is only 10% ( Efficiency of solar cells, components, combination

1: solar radiation on the conversion efficiency of solar battery components under certain conditions, the output of photovoltaic system depends on the radiation intensity of the sun. Photovoltaic system for solar energy utilization efficiency is only 10% ( Loss of efficiency of solar cells, module combination, dust, loss, loss of control inverter, line loss, the battery efficiency) 。 Photovoltaic power station of power is directly related to solar radiation, solar radiation intensity and spectral characteristics change according to the meteorological conditions. 2. Solar energy battery components on the dip Angle for the slope of total solar radiation and direct dispersion separation principle of solar radiation, can draw cant amount of solar radiation on the Ht our Hbt empty by direct solar radiation scattering of Hdt and ground reflection radiation Hrt. Ht = Hbt +热变形+ Hrt3。 The efficiency of solar battery components since the turn of the century, China's solar energy photovoltaic industry has entered a rapid development period. The efficiency of solar cells is improving. With the aid of nanotechnology, the future of silicon conversion rate can reach 35%, this will be a 'breakthrough' of solar power generation technology. The main material is silicon solar photovoltaic cells, so silicon conversion has become an important factor of restricting the further development of the whole industry. The classical theory of silicon conversion limit is 29%. Laboratory records is 25%, the technology is put into industrial production. Laboratory have been able to directly from extracting high purity silicon, silicon dioxide without having to convert it into silicon metal, and then extract the silicon. It can reduce the intermediate links, improve efficiency. By the third generation of nanotechnology combined with existing technology, silicon conversion rate can be increased to more than 35%. If put into large-scale commercial production, the cost of solar power will be greatly reduced. Happily, the technique 'has been done in the laboratory, is waiting for the process of industrialization'. 4. Any series comprehensive losses will loss caused by components of current differential current; Any parallel voltage loss caused by the voltage difference between the components. Comprehensive loss could reach more than 8%, China engineering construction standardization association standards is less than 10%. 5. 1 ℃ temperature characteristic temperature rises, crystalline silicon solar cells: 0 drop in maximum output power. 04%, open circuit voltage drops 0. 04% ( - 2mv/℃) , the short circuit current increased 0. 04%. In order to avoid the temperature influence on power generation, components shall be maintained good ventilated conditions. 6: plant dust dust loses could reach 6%. Components often need to wipe. 7: maximum output power tracking ( MPPT) From the point of view of the solar cell applications, so-called application is to track the maximum power point of solar cell. Grid system of MPPT function complete in the inverter. Recently, some people study put it on the DC bus in the box. 8: line loss of the system of DC and ac circuit line loss should be controlled within 5%. Design, therefore, should use electrical conductivity good conductor, the diameter of the conductor should be enough. Not allowed to cut corners during construction. During the system maintenance, should pay special attention to the connector and wiring terminals are strong.