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Home> News>Industry Information>Human Effects on PV System — Hot-Dip Galvanized Steel Pv Rooftop Mounting System

Human Effects on PV System — Hot-Dip Galvanized Steel Pv Rooftop Mounting System

From:Serve (Xiamen) New Energy Co., Ltd.     Release time:2019-01-17

Overview:One of the most serious losses of power generation caused by improper design is "improper spacing design". At present, most photovoltaic power plants are arranged vertically, and a small amount of shielding along the lower edge often causes the output power of the whole series to drop greatly. According to statistics, in some power stations with small spacing between front and back, the loss of power generation caused by front and back shielding can even reach 3%.

The Effect of Human Factors on System Efficiency


1. Improper design


One of the most serious losses of power generation caused by improper design is "improper spacing design". At present, most photovoltaic power plants are arranged vertically, and a small amount of shielding along the lower edge often causes the output power of the whole series to drop greatly. According to statistics, in some power stations with small spacing between front and back, the loss of power generation caused by front and back shielding can even reach 3%. In addition, besides the front and back shielding, the mountain power station should also consider the shielding caused by the elevation difference between East and West directions. In power stations with large slopes and small spacing between East and west, this reduction can reach 2%.


In addition to the spacing, I often see that in the photovoltaic power station field area, there are high buildings designed to block the surrounding photovoltaic array.

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2. Improper cleaning


In the northwest, a sandstorm may directly reduce power generation by more than 5%, while in the east, the volt power station will hardly produce power in severe haze weather. The following is a comparison of the output of photovoltaic power plants before and after cleaning.


It can be seen that the greater the irradiance, the stronger the penetration of sunlight, the less the loss caused by dust.


In addition to dust, if snow is not removed in time, it will also cause great loss of power generation.


In addition to the above reasons, the rapid attenuation of photovoltaic modules is also an important reason for generating less than expected. General manufacturers promise that the first two years of attenuation will not exceed 2%, 10% in 10 years and 20% in 25 years. I don't know for 10 years and 20 years. It is known that in the first two years, the number of photovoltaic components attenuated at 2% is relatively small.


About Serve Energy

Serve (Xiamen) New Energy Co., Ltd. is a Chinese manufacturer of low ballasted aluminum PV mounting system with independent intellectual property rights. Serve Energy specializes in the research and development, production, sales and services of solar products, such as top class BIPV carport system made in China, Hot-Dip galvanized steel PV rooftop mounting system, flat roof solar mounting made in China, tripod aluminum alloy photovoltaic bracket system wholesale.


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