2021 年 87 巻 899 号 p. 21-00066
In a photovoltaic generation plant, the tilted angle, azimuth angle, and solar arrays’ interval are the main design parameters because they affect the annual amount of received light. Increasing the tilted angle of the solar array and the interval between the front and the back can reduce the shadow ratio, but the number of solar arrays that can be installed decreases, and the total amount of light received drops in the entire facility will decrease. Based on the solar orbit analysis, the amount of solar radiation with shadows on the solar array is determined using the ratio of shadows on the solar arrays. Photovoltaic generation plants will be built on complex shaped sites. It is considered to place the solar arrays at a site in a multiply connected area that contains land that cannot be placed. Because of the weather in the installation area affects the placement of the solar arrays the weighting factors of the amount of solar radiation and the sunshine duration are used. This study proposes a method to determine the placement of the solar arrays that maximizes the amount of received light on a site. This placement problem is formulated as a combinatorial optimization problem and solved by genetic algorithms. The proposed method is able to obtain the optimal value for the solar arrays placement.
