JP5677255B2 - Photovoltaic power generation apparatus and system - Google Patents

Description

  Embodiments described herein relate generally to a photovoltaic power generation apparatus and system.

  In recent years, due to consideration for environmental issues, the introduction of solar power generation systems that generate power using sunlight has increased worldwide, and mega solar power plants with large-scale solar power generation systems have been built around the world. Yes. In a solar power generation system, a large number of solar cell panels are arranged, and the solar cell panels are supported and fixed by a gantry and a foundation. The mount and the foundation are required to have strength that can withstand wind pressure acting on the solar cell panel.

  On the other hand, since the installation cost of the gantry and the foundation occupies a large proportion in the installation cost of the solar power generation system, it is required to reduce the installation cost of the gantry and the foundation. Reduction of the installation cost of the gantry and foundation is achieved by reducing the weight of the gantry and foundation, but reducing the weight of the gantry and foundation while ensuring the soundness of the gantry and foundation so that it can withstand wind pressure, etc. It is difficult.

JP 2002-368249 A JP 2007-212399 A JP 2002-227347 A

  As described above, it is required to reduce the installation cost of the gantry and the foundation while ensuring the soundness of the gantry and the foundation.

  The problem to be solved by the present invention is to provide a photovoltaic power generation apparatus and a photovoltaic power generation system that can reduce the installation cost of a gantry and a foundation.

  The solar power generation device concerning one embodiment is provided with a solar cell panel, a mount, and a rectification part. The solar cell panel has a light receiving surface irradiated with sunlight and a back surface facing the light receiving surface. The gantry supports the solar cell panel at a certain inclination angle. A rectification | straightening part is provided in the upper end part of the said solar cell panel and one of the said mounts, and adjusts the flow of a wind so that the wind which goes to the said back surface flows along the said back surface.

The side view which shows schematically the solar power generation device which concerns on 1st Embodiment. The rear view which shows the solar power generation device of FIG. 1 schematically. The figure explaining the flow of the wind around the solar power generation device which concerns on a comparative example. The figure explaining the flow of the wind around the solar power generation device of FIG. The side view which shows roughly the solar power generation system using the solar power generation device which concerns on 1st Embodiment. (A) And (B) is the perspective view and side view which show the simulation model used when calculating a wind-force coefficient. The side view which shows schematically the solar power generation device which concerns on the modification 1 of 1st Embodiment. The rear view which shows roughly the solar power generation device of FIG. The rear view which shows roughly the solar power generation device which concerns on the modification 2 of 1st Embodiment. The rear view which shows roughly the solar power generation device which concerns on the modification 3 of 1st Embodiment. The rear view which shows roughly the solar power generation device which concerns on the modification 4 of 1st Embodiment. The rear view which shows roughly the solar power generation device which concerns on the modification 5 of 1st Embodiment. The rear view which shows roughly the solar power generation device which concerns on the modification 6 of 1st Embodiment. Schematic which shows the solar energy power generation system which concerns on 2nd Embodiment. (A) is a graph showing the calculation result of the wind force coefficient when the wind direction is 0 degrees, (B) is a graph showing the calculation result of the wind force coefficient when the wind direction is 30 degrees, (C ) Is a graph showing the calculation result of the wind force coefficient when the wind direction is 45 degrees, and (D) is a graph showing the calculation result of the wind force coefficient when the wind direction is 180 degrees.

  Hereinafter, the solar power generation device and the solar power generation system according to the embodiment will be described with reference to the drawings as necessary. Note that, in the following embodiments, the same numbered portions are assumed to perform the same operation, and repeated description is omitted.

(First embodiment)
FIG. 1 is a side view schematically showing the solar power generation device 100 according to the first embodiment, and FIG. 2 is a schematic view of the solar power generation device 100 viewed from the direction of arrow A shown in FIG. FIG. As shown in FIG. 1, the solar power generation device 100 includes a solar cell panel 110 that receives sunlight and generates electric power. The solar cell panel 110 is supported and fixed to the gantry 120 at an arbitrary angle θ from the horizontal plane. The gantry 120 is supported and fixed to a concrete base 130 formed on the ground G. Furthermore, a rectifying plate 140 as a rectifying unit for adjusting the air flow is attached to the upper end 113 of the solar cell panel 110.

  The solar cell panel 110 is installed inclined from the viewpoint of power generation efficiency. For example, in a high latitude region in the northern hemisphere such as Japan, the solar cell panel 110 is installed with an inclination so that the light receiving surface (surface) 111 faces southward. In the present embodiment, a case where the solar power generation device 100 is installed in Japan, that is, a case where the solar cell panel 110 is arranged in the south direction will be described as an example. Here, the front-rear direction is defined with the south side of the solar power generation device 100 as the front and the north side of the solar power generation device 100 as the rear. When the solar power generation device 100 is installed in Japan, the angle (hereinafter referred to as an inclination angle) θ formed by the horizontal plane and the light receiving surface 111 is typically set to an angle in the range of 5 degrees to 30 degrees. The In order to obtain a larger amount of power generation, the inclination angle θ is determined in consideration of various conditions such as the latitude of the installation location and the environment.

  The gantry 120 includes an attachment portion 121 for attaching the solar cell panel 110, a plurality of support columns 122, and a plurality of lateral members 123. As shown in FIGS. 1 and 2, the mounting portion 121 is supported and fixed by a support column 122. The struts 122 are fixed to the base 130 using, for example, anchor bolts, and are coupled to each other by a lateral member 123. Furthermore, the attachment part 121 is formed with a plurality of bolt holes (not shown) for passing bolts. As an example, the mounting portion 121 includes a frame-shaped support base 124 and a mounting bar 125 that is horizontally mounted on the support base 124, and a bolt hole is formed in the mounting bar 125.

  Although not shown in detail in FIG. 1 and FIG. 2, the solar cell panel 110 is a solar cell array that is a solar cell module assembly in which a plurality of solar cell modules are connected vertically and horizontally, and the outer peripheral edge and the back surface 112 of the solar cell array. And a frame attached to. A solar cell module electrically connects a plurality of solar cell elements (solar cell) for converting sunlight into electric power in series, and these solar cell elements are thin and rectangular containers having wind resistance and weather resistance (for example, And a glass case formed of tempered glass) and configured to obtain a desired voltage. Bolt holes for passing bolts are formed in the frame of the solar cell panel 110. With the bolt holes of the frame of the solar cell panel 110 and the bolt holes of the mounting portion 121 being combined, the bolts are inserted into the bolt holes and engaged with engaging members such as nuts, whereby the solar cell panel 110 is mounted. 120 is fixed.

  Further, the frame of the solar cell panel 110 is used for attaching the rectifying plate 140. The bolt holes formed in the rectifying plate 140 and the bolt holes of the frame of the solar cell panel 110 are combined and the bolts are inserted into the bolt holes and engaged with engaging members such as nuts. 140 is fixed to the solar cell panel 110.

  The rectifying plate 140 of the present embodiment is formed in a curved plate shape. The shape of the rectifying plate 140 viewed from the side, that is, the cross-sectional shape of the rectifying plate 140 in a plane perpendicular to the width direction of the solar cell panel 110 is a U-shape as shown in FIG. Here, the width direction is a direction parallel to the light receiving surface 111 of the solar cell panel 110 that is arranged perpendicularly to the vertical direction and inclined. In the present embodiment, the width direction corresponds to the east-west direction. In one example, the shape of the rectifying plate 140 viewed from the side is a shape that approximates the cross section of the front edge portion of the symmetric wing.

The base end portion 141 of the rectifying plate 140 is fixed to the solar cell panel 110, and the distal end portion 142 of the rectifying plate 140 is located on the back surface 112 side of the solar cell panel 110. Furthermore, the rectifying plate 140 is provided over the entire width of the solar cell panel 110 as shown in FIG. In one example, the rectifying plate 140 is formed of a member having high rigidity.

  FIG. 3 schematically shows the flow of wind from the rear to the front of the photovoltaic power generation apparatus 300 according to the comparative example (that is, wind from north to south) with arrows. The photovoltaic power generation apparatus 300 according to the comparative example has the same configuration as the photovoltaic power generation apparatus 100 shown in FIG. 1 except that the rectifying unit is not provided. As shown in FIG. 3, part of the wind traveling from the rear to the front of the solar power generation device 300 is directed to the back surface 112 of the solar cell panel 110. The wind toward the back surface 112 of the positive battery panel 110 directly collides with the back surface 112 of the solar cell panel 110, so that a stagnation region 350 in which the wind flow stagnates is generated on the back surface 112 of the solar cell panel 110. As a result, in the solar power generation device 300, a large wind pressure (wind load) acts on the solar cell panel 110.

  In general, when the solar cell panel 110 is installed at an inclination, the wind traveling from the rear to the front of the solar power generation device acts on the solar cell panel 110 larger than the wind traveling from the front to the rear of the solar power generation device. Let From this, in the design of the gantry 120 and the foundation 130, the strength of the gantry 120 and the foundation 130 is determined particularly in consideration of the influence of the wind from behind the photovoltaic power generation apparatus.

  On the other hand, FIG. 4 schematically shows the flow of wind from the rear to the front of the photovoltaic power generation apparatus 100 of the present embodiment with arrows. As shown in FIG. 4, part of the wind traveling from the rear to the front of the solar power generation device 100 is directed to the back surface 112 of the solar cell panel 110. The wind toward the back surface 112 of the solar cell panel 110 is rectified by the rectifying plate 140 and flows along the back surface 112 of the solar cell panel 110. As a result, the wind directly impinging on the back surface 112 of the solar cell panel 110 is reduced, and the wind pressure acting on the solar cell panel 110 is reduced.

  Thus, in the solar power generation device 100 according to the present embodiment, the wind pressure acting on the solar cell panel 110 can be reduced by providing the rectifying plate 140 that regulates the flow of the wind. When the wind pressure acting on the solar cell panel 110 is reduced, it is easy to secure the strength of the gantry 120 and the foundation 130 against the wind pressure, so that the gantry 120 and the foundation 130 can be reduced in weight. As a result, the installation cost of the solar power generation device 100 can be reduced.

The inventors have conducted the analysis described below, and have verified that the wind pressure acting on the solar cell panel 110 can be reduced by providing the current plate 140. As shown in FIG. 5, the inventors of the photovoltaic power generation system 500 in which the photovoltaic power generation apparatus 300 according to the comparative example and the photovoltaic power generation apparatus 100 according to the present embodiment are arranged at the front and rear, The wind power coefficient of the solar cell panel 110 of the power generation apparatus 100 was calculated. Further, the inventors of the photovoltaic power generation system (not shown) in which two photovoltaic power generation devices 300 according to the comparative example are arranged on the front and rear sides, the wind power of the solar cell panel 110 of the photovoltaic power generation device 300 located at the rear. The coefficient was calculated. The wind force coefficient C is defined by the following mathematical formula (1). In Formula (1), the direction from the back surface 112 of the solar cell panel 110 toward the surface 111 is positive. The wind force coefficient C indicates that the larger the absolute value, the greater the wind pressure acting on the solar cell panel 110.

Here, _{P l} represents a wind pressure acting on the back surface 112 of the solar panel 110, _{P u} represents the wind pressure acting on the light receiving surface 111 of the solar panel 110. Moreover, ρ and U represent the density and flow velocity of the fluid (air), respectively. Further, A represents the area of the light receiving surface 111 or the back surface 112 of the solar cell panel 110.

  In the calculation of the wind power coefficient C, as shown in FIGS. 6A and 6B, the portions other than the solar cell panel 110 (the pedestal 120 and the foundation 130) are omitted because they have little influence on the wind flow. Moreover, the width W of the solar cell panel was 1500 mm, the depth D was 3000 mm, and the thickness T was 100 mm. The height H of the solar cell panel 110, that is, the distance between the ground G and the lower end of the solar cell panel 110 was 500 mm, and the inclination angle θ was 30 degrees. Furthermore, as shown in FIG. 5, the distance L between the photovoltaic power generation apparatuses was set to 3000 mm. Furthermore, the solar cell panel 110 is arranged in the south direction, the wind direction is from the north to the south (the direction indicated by the arrow A in FIG. 5), and the wind speed is 30 m / s.

  In the photovoltaic power generation system 500 in which the photovoltaic power generation apparatus 100 according to the present embodiment is arranged behind the photovoltaic power generation apparatus 300 according to the comparative example, the solar battery panel 110 of the photovoltaic power generation apparatus 100 located behind (windward). The wind power coefficient C was 0.81. On the other hand, in the photovoltaic power generation system in which two photovoltaic power generation devices 300 according to the comparative example are arranged at the front and rear, the wind power coefficient C of the solar cell panel 110 of the photovoltaic power generation device 300 located at the rear (windward) is 1.19 was obtained. From this analysis result, it can be seen that the wind pressure acting on the solar cell panel 110 can be reduced by providing the rectifying plate 140.

  As mentioned above, according to the solar power generation device concerning this embodiment, the wind pressure which acts on a solar cell panel can be reduced by providing the baffle plate which arranges the flow of a wind. As a result, the gantry 120 and the foundation 130 can be reduced in weight, and the installation cost of the gantry 120 and the foundation 130 can be reduced.

  The rectifying plate 140 shown in FIGS. 1 and 2 is an example of a rectifying unit that adjusts the flow of wind, and the rectifying unit is not limited to this example. Below, the modification of a rectification | straightening part (rectifier plate) is demonstrated.

  FIG. 7 is a side view schematically showing a photovoltaic power generation apparatus 700 according to Modification 1 of the first embodiment, and FIG. 8 shows the photovoltaic power generation apparatus 700 viewed from the direction of arrow A in FIG. It is a top view shown roughly. The photovoltaic power generation apparatus 700 shown in FIG. 7 has the same configuration as the photovoltaic power generation apparatus 100 shown in FIG. 1 except for the shape of the rectifying plate. As shown in FIGS. 7 and 8, the rectifying plate 740 of the solar power generation device 700 is formed in a shape obtained by bending two rectangular flat plates. Bending here refers to bending at an arbitrary angle. Specifically, the rectifying plate 740 includes a flat part 741 fixed to the solar cell panel 110, a flat part 742 continuous with the flat part 741, and a flat part 743 continuous with the flat part 742. These flat portions 741, 742, and 743 have a rectangular flat plate shape. The flat portion 743 is located on the back surface 112 side of the solar cell panel 110 and is substantially parallel to the back surface 112 of the solar cell panel 110. The rectifying plate 740 is provided over the entire width of the solar cell panel 110. The rectifying plate 740 is not limited to an example in which the rectangular flat plate is formed in a bent shape at two places, and may be formed in a shape in which the rectangular flat plate is bent at one place or three or more places. Alternatively, the rectifying plate 740 may be a rectangular flat plate.

  FIG. 9 is a side view schematically showing a solar power generation device 900 according to the second modification of the first embodiment. The solar power generation device 900 shown in FIG. 9 has the same configuration as the solar power generation device 100 shown in FIG. 1 except for the shape of the rectifying plate. The rectifying plate 940 of the photovoltaic power generation apparatus 900 includes a curved portion 941 formed in a curved plate shape and a flat portion 942 formed in a flat plate shape. One end portion 943 of the bending portion 941 is fixed to the solar cell panel 110, and the other end portion 944 of the bending portion 941 is coupled to the flat portion 942. The flat portion 942 is located on the back surface 112 side of the solar cell panel 110 and is substantially parallel to the solar cell panel 110. The cross-sectional shape of the curved portion 941 on the surface perpendicular to the width direction of the solar cell panel 110 is, for example, a shape corresponding to the cross-section of the front edge portion of the symmetric wing.

  FIG. 10 is a side view schematically showing a solar power generation device 1000 according to Modification 3 of the first embodiment. The solar power generation device 1000 shown in FIG. 10 has the same configuration as the solar power generation device 100 shown in FIG. 1 except for the shape of the rectifying plate. The rectifying plate 1040 of the photovoltaic power generation apparatus 1000 includes a curved portion 1041 formed in a curved plate shape and a flat portion 1042 formed in a shape obtained by bending a rectangular flat plate at one place. One end portion 1043 of the bending portion 1041 is fixed to the solar cell panel 110, and the other end portion 1044 of the bending portion 1041 is coupled to the flat portion 1042. The flat surface portion 1042 is located on the back surface 112 side of the solar cell panel 110 and is fixed to the mounting portion 121 of the gantry 120.

  Furthermore, although each of the rectifying plates described above has been described as being provided over the entire width of the solar cell panel 110, the present invention is not limited to this. The current plate may be partially provided along the width direction of the solar cell panel 110 as shown in FIGS. 11, 12, and 13. In FIG. 11, the rectifying plate 1140 according to the modification 4 of the first embodiment is provided at one end of the upper end portion 113 of the solar cell panel 110. In FIG. 12, the rectifying unit 1240 according to Modification 5 of the first embodiment is provided at the center of the upper end 113 of the solar cell panel 110. In FIG. 13, the rectifying plates 1340 according to Modification 6 of the first embodiment are provided at both ends of the upper end portion 113 of the solar cell panel 110. The shape of these rectifying plates 1140, 1240, and 1340 when viewed from the side is a U-shape like the rectifying plate 110 shown in FIG.

  Further, although each of the above-described rectifying plates is fixed to the solar cell panel 110, it may be fixed to the gantry 120 or may be fixed to both the solar cell panel 110 and the gantry 120.

(Second Embodiment)
In the second embodiment, a solar power generation system including a plurality of solar power generation devices (also referred to as solar power generation device groups) will be described.

  FIG. 14 schematically shows a solar power generation system 1400 according to the second embodiment. In this solar power generation system 1400, as shown in FIG. 14, solar power generation device arrays 1401 to 1406 in which ten solar power generation devices 1410 are arranged in the east-west direction are arranged in a north-south direction at a predetermined interval L. Are arranged in six stages. In FIG. 14, one rectangular block represents one solar power generation device 1410. Each of the solar power generation devices 1410 is installed such that the solar cell panel faces south.

  In the present embodiment, at least one of the solar power generation devices 1410 included in the solar power generation system 1400 is the solar power generation device 100 (FIG. 1) according to the first embodiment, and the remaining solar power generation devices 1410. Is a conventional solar power generation device (for example, the solar power generation device 300 of FIG. 4). In an example, all the photovoltaic power generation devices 1410 in the first-stage photovoltaic power generation device array 1401 located in the north are the photovoltaic power generation devices 100 according to the first embodiment, and the remaining photovoltaic power generation devices 1410 are. Is a conventional solar power generation device. In another example, the photovoltaic power generation devices 1410 located at both ends of each of the first to sixth-stage photovoltaic power generation device arrays 1401 to 1406 are the photovoltaic power generation devices 100 according to the first embodiment, and the remaining The solar power generation device 1410 is a conventional solar power generation device. In still another example, the solar power generation device 1410 located at the peripheral end (also referred to as a boundary) of the solar power generation device group is the solar power generation device 100 according to the first embodiment, and the remaining solar power generation devices. Reference numeral 1410 denotes a conventional solar power generation device. The solar power generation device 1410 located at the peripheral edge of the solar power generation device group includes the solar power generation device 1410 in the first-stage solar power generation device array 1401 and the sixth-stage solar power generation device array 1406. The solar power generation device 1410 and the solar power generation devices 1410 positioned at both ends of each of the second to fifth-stage solar power generation device arrays 1402 to 1405 are included. Furthermore, in another example, all the solar power generation devices are the solar power generation devices 100 according to the first embodiment.

  The inventors calculate the wind power coefficient of each solar cell panel when all the solar power generation devices 1410 in the solar power generation system 1400 of FIG. 14 are the solar power generation devices 300 (FIG. 3) according to the comparative example. did. The wind force coefficient was calculated for each of the cases where the wind direction was 0 degrees, 30 degrees, 45 degrees, and 180 degrees using the same settings as described above. Here, a wind with a wind direction of 0 degrees is a wind that travels from north to south, a wind with a wind direction of 45 degrees is a wind that travels from northwest to southeast, and a wind with a wind direction of 180 degrees is a wind that travels from south to north. .

  FIGS. 15A to 15D show the analysis results of the wind force coefficient. More specifically, FIGS. 15A, 15 </ b> B, 15 </ b> C, and 15 </ b> D show distributions of wind power coefficients when the wind directions are 0 degrees, 30 degrees, 45 degrees, and 180 degrees, respectively. . 15A to 15D, the horizontal axis represents the column number of the photovoltaic power generation apparatus, and the vertical axis represents the wind force coefficient. The column numbers are assigned in order from the solar power generation device 1410 located on the west side for each solar power generation device array.

  In FIG. 15A, when comparing the photovoltaic power generation devices in the same row, the wind power coefficient is the largest in the first-stage photovoltaic power generation device array 1401, and the wind power coefficient is the largest in the second-stage photovoltaic power generation device array 1402. There is a tendency that the wind power coefficient becomes larger as the photovoltaic power generation device array that is smaller and located leeward. In the solar power generation device array 1401 located on the windward side, the wind power coefficient is obtained by the solar power generation device 1410 arranged at the end portion (1, 2, 9, 10th row) as compared with the central portion (3rd-8th row). In the other solar power generation device arrays 1402 to 1406, the wind power coefficient is larger in the solar power generation devices 1410 arranged in the end portions (1, 10 rows) than in the central portion (2-9 rows). ing.

  15B and 15C, when compared with the photovoltaic power generation devices in the same column, the wind power coefficient is the largest in the first photovoltaic power generation device array 1401, and the third photovoltaic power generation device array 1403 has the largest wind power coefficient. There is a tendency that the wind power coefficient becomes larger as the photovoltaic power generation device array that is the smallest and located in the leeward. When compared in each photovoltaic power generator array, the wind power coefficient decreases as the column number increases.

  In FIG. 15D, when compared with the photovoltaic power generators in the same row, the absolute value of the wind power coefficient is the largest in the sixth-stage photovoltaic power generator array 1406, and the wind power is increased in the fifth-stage photovoltaic power generator array 1405. The absolute value of the coefficient is the smallest, and the solar power generation device array located at the leeward tends to have a larger absolute value of the wind coefficient. In the solar power generation device array 1406 located on the windward side, the wind power coefficient is calculated by the solar power generation device 1410 arranged at the end portion (1, 2, 9, 10th row) as compared with the central portion (3rd-8th row). Of the other solar power generation device arrays 1401 to 1405, the solar power generation devices arranged at the end (1, 2, 9, 10 rows) compared to the central portion (3 to 8 rows) At 1410, the absolute value of the wind force coefficient is increased.

  Therefore, from FIGS. 15A to 15D, it can be seen that the absolute value of the wind force coefficient is large in the solar power generation device array located on the windward in any wind direction.

  From this analysis, it can be seen that the wind pressure acting on the solar cell panel of the solar power generation device 1410 located at the peripheral edge of the solar power generation device group increases. Furthermore, according to JIS (Japanese Industrial Standards), the standard is established, “If there are multiple mounts, the wind power coefficient according to the calculation formula can be applied to the peripheral edge and 1/2 of the value can be used for the central part.” Has been. Therefore, it is necessary to make the gantry and foundation of the solar power generation device 1410 located at the peripheral edge of the solar power generation device group stronger. As the solar power generation device on which large wind pressure acts is more effective in reducing the wind pressure by providing the rectification unit, the solar power generation device 1410 located at the peripheral edge of the solar power generation device group is shown in FIG. It is preferable to provide a straightening plate 140.

  As described above, in the solar power generation system according to this embodiment, the solar power generation device group includes at least one solar power generation device including the rectifying plate as described in the first embodiment. In the solar power generation device including the rectifying plate, the wind pressure acting on the solar cell panel is reduced, so that the gantry and the foundation can be reduced in weight, and the installation cost of the gantry and the foundation can be reduced.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 100 ... Solar power generation device, 110 ... Solar cell panel, 120 ... Mounting frame, 121 ... Mounting part, 122 ... Support | pillar, 123 ... Horizontal member, 130 ... Base, 140 ... Rectification plate, 700, 900, 1000 ... Solar power generation device , 740, 940, 1040 ... current plate.

Claims (8)

A solar cell panel having a light-receiving surface irradiated with sunlight and a back surface facing the light-receiving surface;
A stand for supporting the solar cell panel at an inclination angle;
In order to reduce wind pressure acting on the solar cell panel , provided at at least one of the upper end portion of the solar cell panel and the upper end portion of the gantry, the wind is directed so as to flow along the back surface. A rectifying unit for adjusting the flow;
A solar power generation apparatus comprising: The rectifying unit is formed in a curved plate shape, one end of the rectifying unit is fixed to at least one of an upper end portion of the solar cell panel and an upper end portion of the gantry, and the other end of the rectifying unit is the solar unit. It is located in the back side of a battery panel, The solar power generation device of Claim 1 characterized by the above-mentioned. The rectifying unit is formed in a shape in which at least one rectangular flat plate is bent, and one end of the rectifying unit is fixed to at least one of an upper end of the solar cell panel and an upper end of the gantry, The solar power generation device according to claim 1, wherein the other end is located on a back side of the solar cell panel.   The solar power generation device according to claim 1, wherein the rectifying unit includes a curved part formed in a curved plate shape and a flat part formed in a flat plate shape.   The solar power generation apparatus according to claim 1, wherein the rectifying unit is provided over the entire width of the solar cell panel.   The solar power generation apparatus according to claim 1, wherein the rectifying unit is partially provided along a width direction of the solar cell panel. Solar power comprising a solar power generation device group in which a plurality of solar power generation devices are arranged along a second direction orthogonal to the first direction. A power generation system,
Each of the solar power generation devices included in the solar power generation device group supports a solar cell panel having a light receiving surface irradiated with sunlight and a back surface facing the light receiving surface, and the solar cell panel at an inclination angle. A mounting frame,
At least one of the solar power generation devices included in the solar power generation device group is provided on at least one of the upper end portion of the solar cell panel and the upper end portion of the mount, and reduces the wind pressure acting on the solar cell panel. Therefore, the photovoltaic power generation system wind toward the back surface further comprising a rectifying unit for adjusting a flow of air to flow, along the back, characterized in that.   The solar power generation system according to claim 7, wherein a solar power generation device arranged at a peripheral end of the solar power generation device group further includes the rectification unit.

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