JP6065207B2 - Aerial solar power generation system - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an aerial photovoltaic power generation system in which a solar panel is arranged in the air above a certain distance from the ground surface or the water surface, and the solar panel receives sunlight to generate power. It is.

  In recent years, in the photovoltaic power generation business, the “Mega Solar Power Generation” plan to install about 140,000 kW of solar power generation facilities at about 30 locations nationwide by fiscal year 2020 with the legalization of the power purchase system. Published by the electric utility. Conventional solar power generation equipment installed on the roofs and rooftops of ordinary households has a power generation capacity of about 2 to 4 kW. However, in this mega solar power generation plan, this is scaled up to 1,000 to 1 per place. It is assumed to be a power generation facility with a power generation capacity of 20,000 kW.

  As a construction method of such a mega solar power generation facility, a ground installation method in which a solar panel is directly installed on the ground level of a flat land is generally used. Recently, however, it has become difficult to secure a flat and supportive business site, and the rent on the site has soared rapidly. It is expected that it will be difficult to secure land with good conditions.

  In addition, in connection with the installation method of a solar panel used in a mega solar power generation facility or the like, the solar panel installation work (for example, see Patent Document 1) or the direction of the light receiving surface in the solar panel is simplified. Have been proposed so far, which can follow the movement of the sun to improve the power generation efficiency (see, for example, Patent Documents 2 and 3).

JP 2011-185030 A JP 2012-174944 A Japanese Patent No. 3906191

  By the way, when there is a shortage of land required for solar power generation facilities in the mega solar power generation plan, slopes, land with poor ground conditions (rural sites, swamps, etc.), land that is susceptible to tsunamis and high waves, etc. It is expected to utilize. Under such conditions, it is difficult to apply a ground installation method in which solar panels are directly installed at the ground level of the land. For this reason, development of the system which installs a solar panel in the upper air in the predetermined space from the ground surface and the water surface was desired.

  The present invention has been made in view of the above, and an object of the present invention is to provide an aerial photovoltaic power generation system in which a solar panel is installed in the air above the ground surface and the water surface at a certain interval. And

  In order to solve the above-described problems and achieve the object, an aerial photovoltaic power generation system according to the present invention includes an arch-type upper chord material that is convexly curved upward and a compressive force acts thereon, and the upper chord Suspension-type lower chord material, which is joined at the end portions to each other and curved downward so that a tensile force acts, a lattice material for connecting the upper chord material and the lower chord material, and the upper chord material A suspension arch structure for supporting a compression end of the upper chord material and a tensile force of the lower chord material at the connection end, A solar panel.

  Another aerial photovoltaic power generation system according to the present invention is the above-described invention, wherein the solar panel is attached to a gantry provided on the upper chord material, and the inclination angle of the gantry is changed to change the inclination angle of the solar panel. It is characterized in that the direction of the light receiving surface can be changed freely.

  According to the aerial photovoltaic power generation system according to the present invention, an arch-type upper chord material that is curved upwardly so that a compressive force is applied, and the upper chord material and the ends are joined to each other and protruded downward. A suspension-type lower chord material that is bent in a shape and acting on a tensile force, a lattice material that connects the upper chord material and the lower chord material, and a joining end portion that joins the upper chord material and the lower chord material A suspension arch structure comprising a supporting column and a suspension arch structure that cancels out the compressive force of the upper chord member and the tensile force of the lower chord member at the joint end, and a solar panel provided on the upper chord member. By providing a solar panel on the upper chord material, it is possible to provide an aerial photovoltaic power generation system in which the solar panel is installed in the air above the ground surface or water surface at a certain interval. Play.

  In addition, even if it is judged that it is difficult to apply as an unfavorable ground condition in the ground installation method, such as the inclination of the ground at the location point or lack of support capacity, the solar cell panel is installed in the air in the present invention, so the location point It can be easily applied without being affected by the ground conditions. In addition, it can be expected to be highly safe against tsunamis and storm surges on the coast.

FIG. 1 is a side view showing an embodiment of an air solar power generation system according to the present invention. FIG. 2 is a diagram showing an embodiment of the aerial solar power generation system according to the present invention, and is a plan view taken along line AA of FIG. FIG. 3 is a diagram showing an embodiment of the aerial solar power generation system according to the present invention, and is a BB plan view of FIG. 1. FIG. 4 is a detailed view of part a in FIG. FIG. 5 is a diagram showing an embodiment of the aerial solar power generation system according to the present invention, and is a cross-sectional view taken along the line CC in FIG. 6 is a diagram showing an embodiment of the aerial solar power generation system according to the present invention, and is a cross-sectional view taken along the line DD in FIG. FIG. 7 is a detailed view (front view) of part b of FIG. FIG. 8 is a detailed view (side view) of part b of FIG. FIG. 9 is a detailed view (plan view) of part b of FIG.

  Hereinafter, embodiments of an aerial photovoltaic power generation system according to the present invention will be described in detail with reference to the drawings. In this embodiment, the case where the aerial photovoltaic power generation system is installed in the air above the ground surface will be described as an example. However, the present invention is not limited to this embodiment. Alternatively, the solar panel may be installed in the air above the water surface by supporting it on the bottom of the lake.

  As shown in FIG. 1, FIG. 2 and FIG. 3, the aerial photovoltaic power generation system 10 according to the present invention includes an arch type upper chord member 12, a suspension type lower chord member 14, a lattice member 16, and a ground surface GL. It has a so-called suspension arch structure that is composed of upright support columns 18 and cancels the horizontal reaction force by the compressive force of the upper chord member 12 and the tensile force of the lower chord member 14 at the joint end 20 of the upper chord member 12 and the lower chord member 14. ing. The aerial solar power generation system 10 further includes a solar panel 22 provided on the upper chord material 12.

  The upper chord member 12 is an arch-shaped member that is convexly curved upward so that a compressive force acts on it. As shown in FIG. 2, two upper chord members 12 are arranged in parallel to the bridge axis direction. The upper chord member 12 can be made of a laminated material having a rectangular cross section, for example.

  The lower chord material 14 is a suspension-type member that is joined to the upper chord material 12 at the ends and curved downward so that a tensile force acts. Since a large tensile force acts on the lower chord member 14, it is desirable that the lower chord member 14 is made of, for example, a steel flat bar having a high tensile strength. As shown in FIG. 3, the lower chord material 14 is composed of a first lower chord material 14a disposed on the support 18 side, a second lower chord material 14b, and a third lower chord material 14c disposed on the center side.

  The first lower chord member 14a is arranged in a V shape in plan view from two hinges 24 provided at positions that divide the span into approximately three equal parts with a gap in the bridge axis direction. is there. The 2nd lower chord material 14b and the 3rd lower chord material 14c are constructed between the two hinges 24 provided in the position which divides a space | interval in the bridge shaft direction at intervals, and the 2nd lower chord material 14b. Are arranged on both sides in such a manner as to sandwich the outside of the third lower chord material 14c. Detailed positional relationships of the first lower chord material 14a, the second lower chord material 14b, and the third lower chord material 14c in the vicinity of the hinge 24 will be described later with reference to FIGS.

  The lattice material 16 is a member that connects the upper chord material 12 and the lower chord material 14. As shown in FIG. 3, the lattice material 16 is a V-shape in a side view of FIG. 1 in a mode in which the lower ends of the four lattice materials 16 are joined to the two hinges 24 and the upper ends are joined to the upper chord material 12. Are arranged in an X shape in a plan view of FIG. As the material of the lattice material 16, a steel pipe that can resist the generated axial force (compression force) and bending moment can be used.

  The strut 18 is a member that supports the joining end 20 that joins the upper chord member 12 and the lower chord member 14. In the present invention, since the suspension arch structure is adopted, the horizontal reaction force is not always generated in the column 18. However, since it is necessary to ensure safety against seismic force and wind load, it is desirable to adopt a steel structure such as a square steel pipe as the structure of the support 18. As shown in FIG. 3, there are four support columns 18 in total, two on each side corresponding to the number of joint ends 20 of the upper chord member 12 and the lower chord member 14, and the lower ends thereof are concrete foundations embedded in the ground. 26 is fixed. The upper ends of adjacent struts 18 are connected by a horizontal member 28, and the lower ends of the struts 18 are reinforced by a steel reinforcing plate 30.

  As shown in FIG. 2, between the two upper chord members 12, an end cross beam 32 is extended to the outside, and a plurality of intermediate cross beams 34 are extended to the inside at a predetermined interval. Further, a plurality of small beams 36 are provided in parallel between the two upper chord members 12. A punching metal 38 is provided in the central region of the lattice structure formed by the small beams 36 and the intermediate cross beams 34, and a grating 40 is provided in a surrounding region surrounding the punching metal 38. The floor of the grating 40 is used as an inspection walkway. Further, a panel support 54 is erected on the beam 36 and the upper chord member 12, and a plurality of solar panels 22 are attached to a lattice frame-like pedestal held by the panel support 54.

  Here, in the suspension arch structure of the present embodiment, it is assumed that the span between the columns 18 is about 25 m in length, the depth is about 5 m, and the column 18 is about 3 m in height. In this case, the maximum output per solar panel 22 installed on the upper chord member 12 is about 233 W, the number of arrangement is 4 in the width direction × 14 in the bridge axis direction = 56, and the maximum output of the system 233 × 56 = A scale of about 13 kW can be assumed.

  Thus, according to the present invention, there is an effect that it is possible to provide an aerial solar power generation system of a type in which the solar panel 22 can be installed in the air above the ground surface GL at a certain interval. In addition, even in the case where it is judged that it is difficult to apply as a disadvantageous ground condition in the conventional ground installation method, such as the inclination of the ground at the location point or lack of supporting force, in the present invention, it is in the air away from the ground surface or the water surface. Since the solar panel 22 is installed in the base station, the solar panel 22 can be easily applied without being affected by the ground conditions at the location. Furthermore, when the solar panel is installed in the air above a waterside such as a coastal area according to the present invention, the solar panel is not likely to be affected by waves, so the effect of high safety against tsunami and storm surge can be expected.

  FIG. 4 is a detailed sectional view of the joint end portion 20. In the embodiment shown in FIG. 4, the joint end portion 20 is configured with an RC structure (a reinforced concrete structure). The joint end portion 20 is supported by the support column 18 via a rubber support 42 disposed on the lower surface side. An end portion of the upper chord member 12 is embedded and fixed to the joint end portion 20 via a stud bolt 44. Further, a flange plate 46 is welded to the end portion of the lower chord member 14 (14a), and is embedded and fixed to the joint end portion 20 via a perforated steel plate gibber 48 reinforced with a penetrating rebar. In addition, since this joining edge part 20 is a site | part which aims at transmission of compressive force and tensile force, it does not matter even if it comprises with a steel structure instead of comprising with RC structure.

  As shown in FIGS. 5 and 6, a handrail 50 is provided on the upper side of the outermost beam 36, and an inclined corridor column 52 is provided between the outermost beam 36 and the column 18. . A plurality of panel supports 54 are erected on the small beam 36 and the upper chord material 12. On the panel support 54, a grid frame-like gantry 56 is provided in plan view, and a plurality of rectangular planar solar panels 22 are mounted side by side on the gantry 56. Here, since the upper chord material 12 is in a form that is convexly convex upward, the solar panel 22 constituted by a plurality of sheets is also approximately convex upward in a side view along the form of the upper chord material 12. You may arrange | position so that it may curve, and in order to improve light reception efficiency, you may arrange | position planarly so that each light-receiving surface 22a of the solar panel 22 may face the same direction.

  In the grid frame-like gantry 56 of the present embodiment, the inclination angle θ of the gantry 56 is changed by extending or contracting or rotating a predetermined panel support 54 with an actuator (not shown), and the light receiving surface 22a of the solar panel 22 is changed. The direction of the can be freely changed. Here, since it is desirable in terms of power generation efficiency to make the light receiving surface 22a of the solar panel 22 follow the solar altitude, the solar altitude at each time point at the relevant point is calculated in advance by calculation or the like. You may make it comprise so that the direction of the light-receiving surface 22a of the optical panel 22 can track this solar altitude.

  7, 8 and 9 are partial detailed views of the hinge 24. FIG. As shown in these drawings, the hinge 24 has two first lower chord members 14a, two second lower chord members 14b, and one third lower chord member 14c constituting the lower chord member 14. Each end is fixed rotatably. Each lattice material 16 is joined to the hinge 24 via a connecting plate 58 provided at the lower end thereof.

  In the above embodiment, since the upper chord material 12 functions as an arch material, it is possible to use, for example, a laminated material manufactured from a thinned material for consideration of the environment. If comprised in this way, the rational and stable air solar power generation system which considered the environment by a suspension arch structure can be provided. As the laminated material, for example, highly durable wood such as Ecocore Wood (registered trademark) may be used. Moreover, it is preferable to perform a rust-proofing process in order to ensure durability to the joint metal fitting attached to a laminated material. In addition, since the upper chord material 12 is an arch material, it cannot be overemphasized that the lightweight steel frame structure etc. which were excellent in the compressive force etc. are employable instead of using a laminated material.

  As described above, according to the aerial photovoltaic power generation system according to the present invention, the arch-type upper chord material that is convexly curved and compressive force is applied, and the upper chord material and the end portions A suspension-type lower chord material joined and curved downward so that a tensile force acts, a lattice material connecting the upper chord material and the lower chord material, and the upper chord material and the lower chord material A suspension arch structure that includes a support column that supports a joining end portion to be joined, cancels the compressive force of the upper chord member and the tensile force of the lower chord member at the joining end portion, and a solar panel provided on the upper chord member. By providing a solar panel on the upper chord material of the suspension arch structure, an aerial photovoltaic power generation system is provided in which the solar panel is installed in the air above the ground surface and the water surface at a certain interval. The effect that you can That. In addition, even if it is judged that it is difficult to apply as an unfavorable ground condition in the ground installation method, such as the inclination of the ground at the location point or lack of support capacity, the solar cell panel is installed in the air in the present invention, so the location point It can be easily applied without being affected by the ground conditions. In addition, it can be expected to be highly safe against tsunamis and storm surges on the coast.

  As described above, the aerial photovoltaic power generation system according to the present invention arranges a solar panel in the air above the ground surface or water surface at a certain interval, and receives sunlight with this solar panel. It is useful for aerial solar power generation that generates power, and is particularly suitable for sites that are judged to be unfavorable ground conditions in the ground installation method, such as the slope of the ground at the power generation site and lack of support.

DESCRIPTION OF SYMBOLS 10 Aerial solar power generation system 12 Upper chord material 14 Lower chord material 14a 1st lower chord material 14b 2nd lower chord material 14c 3rd lower chord material 16 Lattice material 18 Support | pillar 20 Joining end part 22 Solar panel 22a Light receiving surface 24 Hinge 26 Concrete foundation 28 Horizontal material 30 Reinforcement plate 32 End cross beam 34 Intermediate cross beam 36 Cross beam 38 Punching metal 40 Grating 42 Rubber bearing 44 Stud bolt 46 Flange plate 48 Perforated steel plate gibber 50 Handrail 52 Walkway post 54 Panel support 56 Base 58 Connection plate GL Ground Surface θ Inclination angle

Claims (1)

An arch-shaped upper chord material that is convexly curved upward and has a compressive force acting on it,
Suspension-type lower chord material joined at the upper chord material and the ends, curved downwardly so that a tensile force acts,
A lattice material connecting the upper chord material and the lower chord material;
It consists of struts that support the joint end that joins the upper chord material and the lower chord material,
A suspension arch structure that offsets the compressive force of the upper chord member and the tensile force of the lower chord member at the joint end;
A solar panel provided on the upper chord material ,
An aerial photovoltaic power generation system , wherein the solar panel is attached to a gantry provided on the upper chord member, and the direction of the light receiving surface of the solar panel is changeable by changing an inclination angle of the gantry. .

Images