Solar photovoltaic application briefly azimuth Angle's influence on the photovoltaic power generation

Solar photovoltaic webex azimuth in the photovoltaic power station is the solar cell phalanx actual orientation ( The square matrix vertical plane) And the Angle between the south and in the same Angle, under the different azimuth photovoltaic phalanx plane accept illumination time is different, different amount of radiation received, photovoltaic phalanx toward the light components will usually azimuth is regarded as the best orientation of the longest time.

the earth with alternating rotation movement of the day from the west to the east, the sun always east from the west; At the same time, the earth has been in orbit around the sun, the earth and the sun on the space from the nearest point to the equator, the dividing line between north and south hemisphere. So in the northern hemisphere photovoltaic modules towards the south, and in the southern hemisphere, photovoltaic modules installed toward the north. So, photovoltaic components towards the south, the northern hemisphere component longest exposed to light.

photovoltaic power station design, in the optimal azimuth choices for the south, the longest exposed to the light direction. Regardless of the terrain, so common ground station configuration are corrected by the changes in the artificial south, in a way station azimuth is south, but in space and the Angle between adjacent county roads exist. Industrial and commercial distributed and household photovoltaic power station for installation on the roof, solar power network, only according to the actual azimuth Angle and tilt Angle for installation of the building, if the roof to the concrete structure, can be to correct the tilt Angle and azimuth Angle, the design.

contrast azimuth impact on generating appropriate USES a single variable, but general factory standing azimuth design are for the south, so the design of software can be used for simulation data. A power station as an example, in southern xinjiang area after PV - Output and the actual power system software calculates history, 2015 - The accuracy in 2019, 99 respectively. 3%, 94. 9%, 98. 2%, 92. 6%, 95. 1%, the average accuracy of 96%, so the reliability of calculated result has a certain.

to simplify the analysis of data, solar photovoltaic, solar portal, enter the Angle and station geographic information design software, by changing the azimuth Angle can be obtained in different azimuth Angle, under the condition of power plant in the total solar radiation and power generating capacity.

(1) under the same Angle, when the azimuth Angle of 0 & deg; , receive the amount of irradiation, the largest component surface with absolute azimuth is increasing, the surface of the component acceptable to amount of irradiation on the value decreases, and in turn the azimuth Angle, the greater the amount of irradiation decreases faster;

(2) with the increase of the dimension, the higher the latitude, azimuth increase a certain value, the unit irradiation quantity to reduce, the greater the namely increasing the slope of the curve; If you want to get maximum limit, the corresponding Angle also increases accordingly;

　　（ This article for solar pv web feeds exclusively, author: xinjiang wind Joe zhou, Zheng Chenlong, reprint must indicate the author and the source. ）

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