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Seven Important Factors Affecting Photovoltaic Power Generation
Category: Industry information
Date: 2019-07-23
Click: 112
Author: Xindun
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For the user factors of installing photovoltaic, the most important thing is to obtain good revenue, which is closely related to the power generation of residual photovoltaic. So what will seriously affect the power generation of photovoltaic power plant?

For the user factors of installing photovoltaic, the most important thing is to obtain good revenue, which is closely related to the power generation of residual photovoltaic. So what will seriously affect the power generation of photovoltaic power plant?

 

1. Inclination. The inclination of photovoltaic panels is an important factor affecting photovoltaic power generation, which can not be ignored. Especially in areas with good sunshine radiation, the optimization of dip angle is particularly important. The better the radiation conditions, the more important the dip angle is. This is because the component of direct radiation is more in good radiation conditions, and the importance of inclination to receive solar radiation is greater. In bad radiation conditions, the component of scattering radiation is larger, and the importance of inclination is weaker. Practice has proved that in some areas, if the inclination difference is 10 degrees, the power generation will be affected by 5-15%.

 

2. Selection of photovoltaic modules. Photovoltaic modules are the main components of photovoltaic power generation. When purchasing photovoltaic modules, it is necessary to ensure that the quality and capacity of the selected manufacturers are reliable and sufficient. There are indeed components with false capacity on the market for sale. If necessary, on-site capacity testing or inviting third-party inspection and testing can be carried out.

 

3. Inverter selection. The selection of inverters is a key link in photovoltaic design and construction, which not only requires high conversion efficiency, but also can operate stably and reliably for a long time.

 

4. Design and selection of wire and cable. The resistance of the internal line of the power plant will directly affect the output of the power plant, especially the large-scale photovoltaic power plant, which has a large site and a long line. Reasonable calculation of line resistance and its influence on output is one of the main links in power plant design.

 

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5. Shade. Generally speaking, shading refers to the shading of direct radiation, and the design calculation of shading distance in our photovoltaic design code is only for direct radiation.

 

6. Dust. Needless to say, dust and dirt on the surface of photovoltaic modules have a great impact on photovoltaic power generation. According to the experiment, a dust weather can affect photovoltaic power generation up to 15-30%, so it is very important to keep the surface of photovoltaic power generation module clean.

 

7. Temperature. Temperature has a great influence on photovoltaic power generation. The rated power of our photovoltaic modules is measured under the standard condition of 25 temperature of photovoltaic cells. In fact, when the solar radiation is good, the working temperature of photovoltaic modules is usually about 50 60 C, and the photovoltaic power will decrease by 8 10%. Therefore, attention should be paid to ventilation and cooling of photovoltaic power generation module in design and installation.

 

In a word, there are many factors affecting photovoltaic power generation. In the process of design and installation of photovoltaic power plants, attention should be paid to every link as well as possible. A good power station should not only be well designed, but also work hard on equipment, material selection, reasonable construction norms and later operation and maintenance, so that it can really play its due role and produce good economic benefits.

 

Xindun is an expert in photovoltaic power plant and other photovoltaic products. If you have any questions, please come to consult us.

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