Study on the azimuths and tilt angles of photovoltaic panels in Yulin of Shaanxi Province
In order to make the photovoltaic module can produce more electricity,a reasonable orientation and angle setting are extremely important.in this paper,the photovoltaic modules installed in the substation in Yulin area were experimentally studied for 344 days.The influences of different azimuths and different tilt angles on the characteristics of photovoltaic power generation in the area were obtained,and the best azimuth and optimum tilt angle were determined when the annual power generation was at its maximum.During the experiment,the installation directions of photovoltaic modules were east,south and west respectively,and there were four different tilt angles of 30°,35°,40°,and 90° in the direction of due east and due west.The tilt angles of photovoltaic panels in the direction of south were 25°,30°,35°,40°,45°,50°,55°,60°,and 90°.Current,voltage,power,and solar radiation intensity are measured respectively,and the influence of tilt Angle and azimuth on the characteristics of annual generation is analyzed.The results show that under the condition of different azimuth and same tilt angle,the south direction is the largest.When the photovoltaic matrix is installed facing south,the maximum power generation is 40° without considering the occlusion.Taking into account the actual installation,the 90° Angle installation is low,about 50%of the maximum power generation,for the photovoltaic matrix installation facing west and east.If the PV module can only be installed 90° east or west to the installation conditions of the building,install the PV module east.During the year-round operation of photovoltaic modules,due to the dual influence of solar radiation and ambient temperature,the energy generation is large in winter and small in summer when the photovoltaic modules are installed in the south direction.The energy generation is large in spring and small in winter when the photovoltaic modules are installed in the east and west direction.
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