JP2016192836A - Photovoltaic power generation facility and photovoltaic power generation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photovoltaic power generation facility, installed on an agricultural land and provided with a frame supporting solar cell panels positioned above a cultivation surface, capable of preventing droplets dripping from the solar cell panels from having an adverse effect on crops.SOLUTION: A solar cell panel 3 is supported on a frame 2 under an inclined state to a horizontal surface so that a corner A in its surface shape is positioned at the lowest end and two peripheral edges 3c, 3d extending from the corner A incline each other.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a solar cell panel, a photovoltaic power generation facility provided with a pedestal that is installed on a farm and supports the solar cell panel positioned above a cultivation surface, and a photovoltaic power generation method.

The above-described solar power generation facility is installed on farmland, and is capable of generating solar power while cultivating crops.
As this type of solar power generation equipment, for example, there is one shown in Patent Document 1. The thing shown by patent document 1 is equipped with the solar cell module (solar cell panel) supported by the yagura as a mount installed in farmland, and a yagura.

JP, 2014-236200, A

  The solar cell panel is supported by the gantry with the surface facing upward and an inclined surface. When the direction of the edge part located on the lower end side of the solar cell panel becomes a direction along the horizontal plane due to the inclined surface, rainwater or dew that falls or falls on the solar cell panel is also scattered It is necessary to provide a ridge along the edge on the lower end side in order to prevent the droplets attached to the solar cell panel such as agricultural chemicals and irrigation water on the solar cell panel from adversely affecting the crop.

  That is, when the direction of the edge portion on the lower end side is a direction along the horizontal plane, the droplets adhering to the surface of the solar cell panel fall down on the surface, and the portion covering the entire length of the edge portion on the lower end side. And then dripped from the site over the entire length of the edge. If a droplet dripping from a part extending over the entire length of the peripheral edge falls on the farmland as it is, it tends to fall on the cultivation surface such as a straw. When a liquid droplet falls on the cultivated surface, the soil jumps up from the cultivated surface, and the raised soil easily adheres to the crop. In the case of leafy vegetables, when soil adheres, the quality deteriorates. In order to avoid quality degradation, it is necessary to wash away the attached soil. Therefore, it is necessary to provide a ridge along the edge where the droplet drops, and to guide rainwater or the like dripping from the edge to drop to a place off the cultivation surface.

  Also, since the droplets drip from the entire length of the lower edge of the edge and the droplets flow in the entire length of the kite, the large capacity is large so that rainwater is unlikely to overflow from the kite. The nephew is necessary.

  An object of the present invention is to provide a photovoltaic power generation facility and a photovoltaic power generation method capable of generating power while making liquid droplets such as rainwater attached to a solar cell panel hardly affect crops.

The characteristic configuration of the solar power generation facility of the present disclosure is:
A solar panel,
A pedestal that is installed on farmland and supports the solar cell panel positioned above the cultivation surface;
The solar cell panel is included in a portion of the peripheral portion where droplets attached to the surface of the solar cell panel can reach by falling, and included in a portion that is vertically above the cultivation surface. At each point on the outline of the solar cell panel when the panel is viewed from the back side, the tangent line that touches the outline and is included in the plane including the outline is supported by the gantry in a state that none of them is parallel to the horizontal plane. Yes.

  According to this configuration, the edge that the liquid droplet falls down on the surface is inclined with respect to the horizontal plane, and the liquid droplet falls down toward the corner portion located at the lower end of the edge, The liquid droplets adhering to the surface are collected at the corner portion and the vicinity thereof and dropped from the corner portion and the vicinity thereof to the outside of the solar cell panel.

  Therefore, even without providing a drainage guide along the edge, the droplets adhering to the surface can be discharged to a narrow area of the farmland. In other words, droplets adhering to the solar cell panel are discharged to a place away from the cultivation surface, or even if it is the cultivation surface, it is discharged together in a narrow area, and the influence such as splashing mud on the crop is affected. It can be prevented from affecting the crop or it can be made difficult to exert.

  Considering the fact that there is a lot of rainwater in a short time, even if a drainage guide is provided along the edge, the edge of the drainage guide is compared with the drainage guide in which the direction of the edge is along the horizontal plane. It is possible to reduce the amount of rainwater that flows into the area far from the corner located at the end of the section, and it is easy to avoid the inflow of rainwater over the entire length of the drainage guide. Can be avoided or suppressed.

Another characteristic configuration of the solar power generation facility of the present disclosure is:
A solar panel,
A pedestal that is installed on farmland and supports the solar cell panel positioned above the cultivation surface;
The solar cell panel is tilted with respect to a horizontal plane so that a corner portion of the surface shape is positioned at the lowermost end and two edge portions extending from the corner portion are inclined with respect to each other. Supported by a gantry.

  According to this configuration, since the droplets adhering to the surface fall down the surface toward the lowermost corner portion, the droplets adhering to the surface are collected at and near the lowermost corner portion, and this corner portion and its It is dripped from the vicinity to the outside of the solar cell panel.

  Therefore, even without providing a drainage guide along the edge, the droplets adhering to the surface can be discharged to a narrow area of the farmland. In other words, droplets adhering to the solar cell panel are discharged to a place away from the cultivation surface, or even if it is the cultivation surface, it is discharged together in a narrow area, and the influence such as splashing mud on the crop is affected. It can be prevented from affecting the crop or it can be made difficult to exert.

  Considering that there is a lot of rainwater for a short time, even if a drainage guide is provided along the edge, it is far from the corner of the bottom edge compared to the direction where the edge is along the horizontal plane. The amount of rainwater flowing into the range can be reduced, and since it is easy to avoid the rainwater flowing in over the entire length of the drainage guide, the overflow of the rainwater from the drainage guide can be avoided or suppressed.

  The said structure WHEREIN: It is suitable in the said surface shape being a square shape.

  According to this structure, when arranging a plurality of solar cell panels, it is difficult to create a useless space between the solar cell panels.

  The said structure WHEREIN: The said mount frame is equipped with a pair of support frame extended in a horizontal direction, and the said solar cell panel has the direction along the horizontal edge part with respect to the direction along each axial center of a pair of said support frame. It is preferable that the support frame is supported by the pair of support frames in an inclined state.

  According to this configuration, when the solar cell panel is supported by the pair of support frames, the solar cell panel is supported in a state in which the direction along the lateral edge portion is inclined with respect to the direction along the axis of each of the pair of support frames. Therefore, one corner portion of the four corner portions can be made the lowermost corner portion easily by attaching the solar cell panel to the pair of support frames.

  In the above configuration, the gantry includes a pair of support frames extending in the horizontal direction in a state of being spaced apart in the direction along the vertical direction and spaced in the direction along the horizontal direction. It is preferable that the support frame is received and supported from below.

  According to this configuration, when the solar cell panel is supported by the pair of support frames, the pair of support frames are arranged at intervals in the vertical direction and in the horizontal direction, respectively. Since the battery panel is received and supported from below by the pair of support frames, the surface of the solar panel can be inclined. That is, the surface can be inclined without preparing a special posture adjusting member simply by supporting the solar cell panel on the pair of support frames.

  In the above configuration, the gantry includes a beam frame that supports the pair of support frames, and one support frame of the pair of support frames is connected to the upper side of the beam frame, and the other support of the pair of support frames is supported. It is preferable that the frame is connected to the lower side of the beam frame.

  According to this configuration, the beam frame can be used as a spacer member to reveal the difference in height between the pair of support frames. Therefore, the surface of the solar cell panel can be formed with a simple support structure that does not require a special spacer member. Can be an inclined surface.

  In the above-described configuration, a pair of attachment legs connected across the pair of support frames are projected from the solar cell panel toward the pair of support frames in a state of being aligned in the horizontal width direction of the solar cell panel, It is preferable that the height at which one mounting leg of the pair of mounting legs protrudes from the solar cell panel is higher than the height at which the other mounting leg protrudes from the solar cell panel.

  According to this configuration, when the pair of mounting legs are connected to the pair of support frames, one corner of the four corners is the bottommost corner due to the difference in the protruding height of the pair of mounting legs. Since it becomes a part, a special posture adjusting member can be dispensed with.

  In the above configuration, the four corner portions of the solar cell panel are in a state in which the direction along the lateral edge of the solar cell panel is inclined with respect to the direction along the axis of each of the pair of support frames. It is preferable that the pair of mounting legs are connected to the pair of support frames in a state in which one corner portion is positioned lower than the other three corner portions.

  According to this configuration, if the pair of mounting legs are connected to the pair of support frames, the protruding heights of the pair of mounting legs from the solar cell panel are different, and the lateral side edges Is inclined with respect to the direction along the axis of each of the pair of support frames, and further, one corner is positioned lower than the other three corners, so that the lowermost corner And the difference in height between the other three corners become large. As a result, the droplets smoothly fall on the surface toward the lowermost corner, and the droplets adhering to the surface can be discharged smoothly.

  In the above configuration, a drainage guide along a lateral edge extending from the lowermost corner portion of the solar cell panel is provided in the solar cell panel, and a drainage port of the drainage guide is provided at the lowermost corner. It is preferable that it is located on the laterally outer side of the solar cell panel than the portion.

According to this configuration, the amount of rainwater in a short time is large, and rainwater that falls on the surface of the solar cell panel goes not only to the corner portion at the bottom end and the vicinity thereof, but also to a portion away from the corner portion at the bottom end. Even if it happens, the rainwater dripping from the part away from the lowermost corner can be received by the drainage guide and guided and drained by the drainage guide. The drainage outlet of the drainage guide is located on the lateral outer side of the solar cell panel from the corner of the lowermost end of the solar cell panel, so rainwater from the solar cell panel can be drained more accurately in places outside the cultivation surface, such as in the furrow .
In addition to rainwater, droplets may adhere to the solar cell panel due to fog, frost, condensation, fertilization, agricultural chemical application, or watering for irrigation or cooling. These droplets have the same effect as rainwater.

  Regardless of whether the amount of rainwater is high or low for a short period of time, and whether it is fog, frost, condensation, fertilization, pesticide application, or some droplets from watering for irrigation or cooling, it is accurate to the point outside the cultivation surface It can be discharged well and the discharged droplets can be prevented from being affected by the crop.

  In the above configuration, the drainage guide has a distance between a straight line connecting the lowest position at the start point of the water channel and the lowest position at the end point of the water channel and a lateral edge extending from the corner portion at the lowermost end. It is preferable that the drain outlet side is configured to be wider.

  According to this configuration, the cross-sectional area of the water channel becomes wider from the start point of the water channel toward the drain outlet. A large amount of liquid droplets are dripped at the corner of the lowermost corner and the vicinity thereof, rather than a portion away from the corner of the lowermost corner. Since it flows into a wide part, it is accepted that it is difficult for the liquid droplet to overflow into the drainage guide. Compared to a drainage guide that has a wide cross-sectional area over the entire length of the water channel, a compact drainage structure that employs a small drainage guide allows liquid droplets to be discharged from the drain outlet while making it difficult to overflow from the middle of the drainage guide.

  The said structure WHEREIN: It is suitable when the said drainage guide is comprised so that the lower surface may become the inclined state located below the said drain outlet side.

  According to this configuration, even if droplets such as condensed water or agrochemicals adhere to the lower surface of the drainage guide, the adhered droplets easily flow toward the drainage port along the lower surface. As a result, it is possible to prevent the droplets adhering to the lower surface from dropping from the middle of the drainage guide.

  In the above configuration, the gantry includes a pair of support frames that support the solar battery panel, a beam frame that supports the pair of support frames, a column that stands on farmland and supports the beam frame, and the column And a reinforcing member connected to the beam frame, and the drain outlet of the drainage guide is preferably located immediately above the reinforcing member.

  According to this configuration, the liquid droplet coming out from the drain port drops on the reinforcing member, the liquid droplet dropped on the reinforcing member flows down along the reinforcing member to the support column, and the droplet reaching the support column flows along the support column. Flow down to the field. Since the struts are installed at locations away from the cultivation surface, such as between the furrows, drainage can be accurately drained to locations outside the cultivation surface by a simple drainage structure utilizing the reinforcing members and the struts as drainage guide means.

  In the above configuration, it is preferable that the drainage guide is provided with a draining plate extending downward from the drainage port.

  According to this configuration, the water draining plate can drain the liquid droplets flowing down from the drain port so as not to enter the lower surface of the drain guide. It is possible to avoid the droplets discharged from the drainage guide from flowing around the lower surface and falling to the crop or the vicinity thereof.

  A feature of the solar power generation method of the present disclosure is that the solar power generation facility having the above-described configuration is used.

  According to this feature, it is possible to provide a solar power generation method capable of generating power while making it difficult for droplets such as rainwater attached to the solar battery panel to adversely affect the crop.

It is a perspective view which shows the whole solar power generation facility. It is a perspective view which shows the support structure of a solar cell panel. It is a front view which shows the support structure of a solar cell panel. It is a side view which shows the support structure of a solar cell panel. It is a perspective view which shows the whole solar cell panel. It is a perspective view which shows the corner | angular part of a solar cell panel. It is a rear view which shows a solar cell panel. It is a top view which shows the support attitude | position of a solar cell panel. It is a longitudinal cross-sectional view which shows a drainage guide. It is a top view which shows the solar cell panel provided with another implementation structure. It is a XI-XI cross-sectional arrow view of FIG. It is a top view which shows the corner | angular part provided with another implementation structure. It is a top view which shows the corner | angular part provided with another implementation structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing the entire photovoltaic power generation facility according to an embodiment of the present invention. The direction of arrow N shown in FIG. 1 indicates the north direction, the direction of arrow S indicates the south direction, the direction of arrow E indicates the east direction, and the direction of arrow W indicates the west direction.

  This photovoltaic power generation facility is used in a photovoltaic power generation method for generating power in a farmland in a state where crop cultivation is possible.

  As shown in FIG. 1, a photovoltaic power generation facility according to an embodiment of the present invention includes a gantry 2 installed on a farmland 1 and a plurality of solar battery panels 3 supported on the upper portion of the gantry 2. The plurality of solar battery panels 3 are arranged in the north-south direction and the east-west direction.

  The plurality of solar battery panels 3 are supported in a state of being positioned above the ridge 4 (cultivated surface). Photovoltaic power can be generated by the plurality of solar battery panels 3 while cultivating crops on the farmland 1.

  Specifically, the gantry 2 is provided with a plurality of support columns 10 arranged in the north-south direction and the east-west direction. Each of the plurality of support columns 10 is set up at a place off the ridge 4 in the farmland 1. The height from the ground to the lower end of each solar cell panel 3 is set to a height at which cultivation work such as tillage can be performed. In the present embodiment, the height from the ground to the lowest end of each solar cell panel 3 is set to a height at which an agricultural machine such as a riding tractor or a riding rice transplanter can be used. Gap 4 is provided with gaps between the solar cell panels 3 adjacent in the north-south direction and between the solar cell panels 3 adjacent in the east-west direction.

  Each of the plurality of solar cell panels 3 is configured such that the surface shape is a square shape. Specifically, each of the plurality of solar battery panels 3 includes one panel frame 3a and a plurality of solar battery cells 3b as shown in FIGS. The planar view shape of the panel frame 3a is formed in a square shape. The plurality of solar cells 3b are supported by the panel frame 3a in a state of being aligned in a direction along the lateral side edge 3c of the solar battery panel 3 and in a direction along the vertical side edge 3d. In the present embodiment, the planar view shape of the panel frame 3a is formed in a rectangular quadrangular shape whose horizontal side is longer than the vertical side. In this embodiment, the surface shape of the solar cell panel 3 is formed in a horizontally-long rectangular shape. However, the surface shape is not limited to the horizontally-long rectangular shape, and is not limited to the vertically-oriented rectangular shape and the square shape as long as the effect of the present invention is not hindered. , Trapezoid, parallelogram, rhombus, etc. Moreover, you may form in polygonal shapes, such as not only square shape but triangle shape and a pentagon shape.

  In this embodiment, the corner portions A and B are formed in an angular shape. However, the shape is not limited to the angular shape, and an arc shape having a rounded surface R (R) as shown in FIG. As shown in FIG. 13, it may be formed in a non-arc shape having a cut corner surface D. When the corner portions A and B are formed in a non-arc shape, corners C are formed at both ends of the cut corner surface D. In this case, the distance of the cut corner surface D, that is, the distance between the two corners C, is set to a distance of 10% or less of the total length of the solar cell panel 3.

  In the present embodiment, the solar battery panel 3 is configured such that the outer peripheral portion of the panel frame 3a protrudes outward from the solar battery cell 3b, but the outer peripheral edge of the panel frame 3a and the outer peripheral edge of the solar battery cell 3b. The panel frame 3a may be configured not to protrude outward from the solar battery cell 3b.

  Each of the plurality of solar cell panels 3 is included in a portion of the edge portions 3c and 3d where droplets attached to the surface of the solar cell panel 3 can reach by falling, and is vertically above the cultivation surface 4. At each point on the outline of the solar cell panel 3 when the solar cell panel 3 included in the portion is viewed from the back, none of the tangents L that touch the outline X and are included in the plane including the outline X are parallel to the horizontal plane. It is supported by the gantry 2 in a state.

  The edge 3c toward which the droplets of rainwater, agricultural chemicals, and the like attached to the surface of the solar cell panel 3 fall down is inclined with respect to the horizontal plane, and the corner is positioned at the lower end of the edge 3c. The part A is positioned below the other three corner parts B. When a droplet adheres to the surface, the droplet falls down the surface toward the corner portion A, collects the adhered droplet at the corner portion A and its vicinity, and from the corner portion A and its vicinity to the outside of the solar cell panel 3. It is dripped.

  The state in which each solar cell panel 3 is supported by the gantry 2 is included in the surface along the surface of the solar cell panel 3 at each point at each point vertically above the cultivation surface 4 in the edge portions 3c and 3d. The tangent may be set to a state that is not parallel to the horizontal plane.

  Each solar cell panel 3 is supported by the gantry 2 at each point included in the portion 3c of the edge portions 3c and 3d where droplets attached to the surface of the solar cell panel 3 can reach by falling. The tangent line L included in the surface along the surface of the point may be set in a state not parallel to the horizontal plane.

  Each of the plurality of solar cell panels 3 has a horizontal plane so that the corner portion A of the surface shape is positioned at the lowermost end and the two edge portions 3c and 3d extending from the corner portion A are inclined with respect to each other. Is supported by the gantry 2 in an inclined state.

  When droplets of rainwater, agricultural chemicals, etc. adhere to the surface of the solar cell panel 3, the droplets fall down the surface toward the lowest corner portion A, and the adhered droplets are collected at the corner portion A and the vicinity thereof. It is dripped from the part A and its vicinity to the exterior of a solar cell panel. In the present embodiment, the surface of the solar cell panel 3 includes the light receiving surface of the solar cell 3b and the upper surface of the panel frame 3a.

  Specifically, each of the plurality of solar battery panels 3 is supported by the gantry 2 based on the following support structure.

  As shown in FIG. 1, a plurality of solar cell panels 3 are arranged in a state in which some solar cell panels 3 are aligned in the east-west direction to form one panel group, and the plurality of panel groups are aligned in the north-south direction. Yes. The gantry 2 includes a plurality of panel support portions 2A arranged in the north-south direction. Each of the plurality of solar cell panels 3 in the plurality of panel groups is supported by one panel support portion 2A. Each of the plurality of panel support portions 2A has the same configuration.

  As shown in FIGS. 1, 2, 3, and 4, each of the plurality of panel support portions 2A includes a pair of support frames 11 and 12 extending in the horizontal direction. In the present embodiment, the pair of support frames 11 and 12 extend in the east-west direction. The pair of support frames 11 and 12 are supported in a state of being spaced apart in the direction along the vertical direction and aligned in the direction along the horizontal direction (north-south direction).

  Specifically, the pair of support frames 11 and 12 are supported by a plurality of beam frames 13. The plurality of beam frames 13 are arranged at intervals in the longitudinal direction of the support frames 11 and 12. Each of the plurality of beam frames 13 extends in the horizontal direction and in the north-south direction. The upper support frame 11 of the pair of support frames 11, 12 is connected to the upper side of each of the plurality of beam frames 13, and the lower support frame 12 of the pair of support frames 11, 12 is the plurality of beam frames 13. Are connected to the underside of each. The beam frame 13 is used as a spacer member, and a vertical interval is provided between the pair of support frames 11 and 12.

  Whether or not a droplet falls on the surface of the solar cell panel 3 is mainly determined by the inclination of the solar cell panel 3, the surface tension of the droplet, the material of the surface of the solar cell panel, and the size of the droplet. If the inclination of the panel 3 is too large, the speed of the falling droplet becomes too large during the fall, and cannot be received by the edge portion 3c of the solar cell panel 3 or the drainage guide 20 described later, and is included in the farmland or this as it is. The possibility of dripping on the cultivated surface is increased. Moreover, if the inclination of the solar cell panel 3 is too small, only large droplets will fall, and when the solar cell panel 3 falls, it cannot be received by the edge 3c of the solar cell panel 3 or the drainage guide 20 as it is. The possibility of dripping onto the included cultivation surface is increased. Therefore, the horizontal and vertical intervals of the support frames 11 and 12 may be appropriately set so as to provide the solar cell panel 3 with an inclination so as to exhibit the effects of the present invention, but preferably the solar cell panel. 3 is set such that the angle between the plane and the horizontal plane (see FIG. 4) [the angle with respect to the center of the arc obtained by equally dividing the circumference by 360] is in the range of 5 ° to 30 ° (excluding the boundary value). It is preferable that the angle is set in a range of 18 ° to 22 ° (excluding the boundary value).

  Each of the plurality of beam frames 13 in the plurality of panel support portions 2A is configured by a series of frame members. Each beam frame 13 in the plurality of panel support portions 2A is a beam frame 13 common to the plurality of panel support portions 2A. Each of the plurality of beam frames 13 is supported by a plurality of support columns 10. A plurality of reinforcing frames 14 are connected across the plurality of beam frames 13. The plurality of reinforcing frames 14 extend in the east-west direction. The plurality of support columns 10 and the reinforcement frame 14 for each of the plurality of beam frames 13 are connected to each of the portions of the beam frame 13 that are located with the pair of adjacent panel support portions 2A interposed therebetween.

  In each of the plurality of solar cell panels 3, as shown in FIGS. 4, 5, and 7, a pair of mounting legs 5 and 6 project from the back side of the solar cell panel 3 toward the pair of support frames 11 and 12. Yes. The pair of mounting leg portions 5 and 6 are arranged at intervals in the lateral width direction of the solar cell panel 3. The height 5h at which one mounting leg 5 of the pair of mounting legs 5 and 6 protrudes from the solar cell panel 3 is the other mounting leg 6 of the pair of mounting legs 5 and 6 is the solar cell. The height is set to be higher than 6 h protruding from the panel 3.

  The height 5h of the attachment leg 5 and the height 6h of the attachment leg 6 are provided with an inclination so that the effect of the present invention is exerted on the solar cell panel 3, and the solar cell panel 3 and the support frames 11, 12 interfere with each other. The angle at the intersection of the plane that follows the surface of the solar cell panel 3 and the straight line that follows the support frames 11 and 12 (see FIG. 7) [the center of the arc that divides the circumference into 360 equal parts is preferable. Is preferably in the range of 0.1 ° to 3 ° (excluding boundary values), and more preferably in the range of 0.5 ° to 1.5 ° (excluding boundary values). .

  Each of the pair of mounting legs 5, 6 is arranged such that the direction along the lateral edge 3 c of the solar cell panel 3 is inclined with respect to the respective shaft cores 11 a, 12 a of the pair of support frames 11, 12. A pair of support frames 11 and 12 are placed and connected. As shown in FIG. 4, each of the pair of mounting legs 5 and 6 and the lower support frame 12 are connected by a clip 30. Each of the pair of mounting leg portions 5 and 6 is formed in a groove shape opened downward. The panel side of the clip 30 is engaged with the mounting legs 5 and 6 by being engaged in the grooves of the mounting legs 5 and 6. The frame side of the clip 30 is connected to the lower support frame 12 by being mounted and clamped so as to sandwich the lower support frame 12. Each of the pair of mounting legs 5 and 6 and the upper support frame 11 are connected by a U bolt 31.

  As shown in FIG. 4, the pair of support frames 11 and 12 that support the solar cell panel 3 from below are arranged with a gap in the direction along the vertical direction and with a gap in the direction along the horizontal direction. Thus, the solar cell panel 3 is inclined such that one lateral side edge 3c is positioned higher than the other lateral side edge 3c. As shown in FIG. 7, the height 5 h at which one mounting leg 5 of the pair of mounting legs 5, 6 projects from the solar cell panel 3, and the other mounting leg 6 projects from the solar cell panel 3. By being higher than the height 6h, the solar cell panel 3 is inclined such that one vertical side edge 3d is positioned above the other vertical side edge 3d. As shown in FIG. 8, the direction along the lateral side edge 3 c of the solar cell panel 3 is inclined with respect to the directions of the shaft cores 11 a and 12 a of the pair of support frames 11 and 12 extending in the horizontal direction. Thus, the solar cell panel 3 is tilted in a state of swinging with the corner portion A at the lowermost end as a swing fulcrum in plan view. With these three inclinations, the support posture of the solar cell panel 3 is such that one corner portion A (lowermost corner portion) is positioned lower than the other three corner portions B, and further from the lowermost corner portion A. The extending horizontal side edge 3c is in a support posture that is inclined so as to be positioned higher as it is farther from the lowermost corner portion A. Drops of rainwater, pesticides, etc. that fall along the surface of the solar cell panel 3 fall toward the lowermost corner portion A and the vicinity thereof, and the droplets adhering to the solar cell panel 3 fall into the lowermost corner portion A. And are collected in the vicinity thereof and dropped from the lowermost corner portion A and the vicinity thereof to the outside of the solar cell panel 3.

  The inclination of the solar cell panel 3 with respect to the support frames 11 and 12 is appropriately set so that the solar cell panel 3 is provided with an inclination so as to exert the effect of the present invention and the solar cell panel 3 and the support frames 11 and 12 do not interfere with each other. Preferably, the intersection of a straight line obtained by vertically projecting a straight line along the support frames 11 and 12 and a straight line along the lateral edge 3c of the solar cell panel 3 on a plane along the surface of the solar cell panel 3 is preferable. Is preferably in the range of 0.1 ° to 3 ° (excluding the boundary value), and 0.5 ° to 1 More preferably, it is in the range of 5 ° (excluding boundary values).

  It is advantageous if the distance in the direction along the horizontal direction can be changed without changing the distance in the direction along the vertical direction of the pair of support frames 11 and 12. That is, the inclination angle shown in FIG. 4 of the solar cell panel 3 can be changed and adjusted by changing the interval in the direction along the horizontal direction.

  In supporting the solar cell panel 3 on the support frames 11 and 12, when viewed in the direction along the direction of the vertical edge 3d, the axis along the horizontal edge 3c and the axis of the support frames 11 and 12 are used. And the direction along the side edge 3c in the horizontal direction is inclined with respect to the direction along the axis of the support frames 11 and 12 in plan view. 3 does not have the inclination shown in FIG. 7, but has the inclination shown in FIG.

  In each panel group, two solar cell panels 3 are located between adjacent beam frames 13. The posture of the two solar cell panels 3 supported by the respective gantry 2 is such that, of the two lower corner portions A and B, the corner portion A closer to the beam frame 13 is the other three corner portions B. The posture is positioned lower than that.

  In each panel group, the interval between the adjacent solar cell panels 3 with the beam frame 13 interposed therebetween is narrower than the interval between the adjacent solar cell panels 3 without the beam frame 13 interposed therebetween. The solar cell panel 3 is supported in a state in which the load on the solar cell panel 3 is applied to a portion near the beam frame 13 in each of the pair of support frames 11 and 12 more than the portion away from the beam frame 13.

  As shown in FIGS. 2, 4, 5 and 7, a drainage guide 20 is provided in each of the plurality of solar cell panels 3. The drainage guide 20 is provided in a state along the lateral side edge 3c extending from the lowermost corner portion A. As shown in FIGS. 6 and 7, one end side of the drainage guide 20 is extended to a position located on the lateral outer side of the solar cell panel 3 with respect to the corner portion A at the lowermost end, and a drainage port 21 is provided at the extension end. ing. As shown in FIGS. 2 and 4, the drain port 21 is disposed at a position directly above the reinforcing member 15. The reinforcing member 15 is connected to the support column 10 and the beam frame 13. The reinforcing member 15 is connected in an inclined posture that is positioned upward as the beam frame 13 side.

  Drops such as rainwater dripped from the solar cell panel 3 are received by the drainage guide 20, flow to the lateral outer side of the solar cell panel 3 along the drainage guide 20, discharged from the drainage port 21, and fall to the reinforcing member 15. . The liquid droplets falling on the reinforcing member 15 flow down along the reinforcing member 15 and reach the support column 10. The droplets that have reached the column 10 flow down along the column 10 and flow out of the column 10 to the field.

  Since the column 10 is standing at a place removed from the ridge 4 such as an intercostal space, a droplet dropped from the solar cell panel 3 can be discharged to a place removed from the ridge 4. The reinforcing member 15 and the support column 10 can be used as a drainage guide for discharging.

  As shown in FIGS. 4, 5, 6, and 7, a draining plate 22 extends downward from the drain port 21. The water draining plate 22 can drain water so that the liquid droplets coming out from the drain port 21 do not enter the lower surface 20 a of the drainage guide 20. The drainage guide 20 includes a flat plate portion that constitutes a bottom portion, and a vertical plate portion that rises from an end portion on the opposite side of the flat plate portion that is connected to the solar cell panel 3.

  As shown in FIG. 9, the drainage guide 20 is configured such that the lower surface 20a is inclined so as to be positioned downward toward the drainage port side. Specifically, the drainage guide 20 is inclined such that the line formed by the lowest point in the cross section of the lower surface 20a and the plane perpendicular to the flowing water direction is located higher as it moves away from the drain port 21 toward the upper side in the flowing water direction. It is comprised so that it may be in a state. Even if droplets such as condensed water and agricultural chemicals adhere to the lower surface 20a, the adhered droplets easily flow along the lower surface 20a toward the drain port 21.

[Another embodiment]
(1) FIG. 10 is a plan view showing a solar cell panel 3 having another drainage structure. 11 is a cross-sectional view taken along the line XI-XI in FIG. In the solar cell panel 3 having another drainage structure, the drainage guide 20 is configured such that the cross-sectional area of the water channel 20b becomes wider from the starting point of the water channel 20b toward the drain port 21.

  Specifically, the drainage guide 20 has a lateral edge 3c extending from the straight line Z connecting the lowest position P1 at the start point of the water channel 20b and the lowest position P2 at the end point of the water channel 20b and the corner portion A at the lowermost end. And the interval from the drain outlet 21 side becomes wider.

  A larger amount of liquid droplets are dropped at the lowermost corner portion A and the vicinity thereof than a portion away from the lowermost corner portion A. The large amount of liquid droplets is on the drain outlet side of the water channel 20b. Since the liquid flows into a portion having a large cross-sectional area, the liquid droplets are accepted so as not to overflow into the drainage guide 20.

(2) In the above-described embodiment, an example in which the solar panel 3 is directed southward is shown. However, depending on the lighting conditions of the farmland 1, the solar panel 3 may be oriented in a direction other than southward, such as a direction slightly deviated from the southward. May be.

(3) In the above-described embodiment, the example in which the beam frame 13 sets the interval in the direction along the vertical direction of the pair of support frames 11 and 12 is shown. The spacer member is interposed between the support frames 11 and 12 and the beam frame 13, and the distance between the pair of support frames 11 and 12 in the vertical direction is set by the spacer member. You may implement by employ | adopting a structure.

(4) In the above-described embodiment, one corner portion A is positioned lower than the three corner portions B because the projecting heights of the pair of mounting legs 5 and 6 projecting from the solar cell panel 3 are different. Although the example which comprised so that the attachment attitude | position of the solar cell panel 3 may be shown was shown, it replaces with this structure, the protrusion height of a pair of attachment leg parts 5 and 6 is set to the same, A height adjustment member is interposed between the support frames 11 and 12, and a configuration is adopted in which the height adjustment member reveals an attachment posture in which one corner portion A is positioned lower than the three corner portions B. Also good.

  The present invention is not limited to the solar power generation facility that supports the solar cell panel at a height above the solar cell panel 3 that can use the riding type agricultural machine, and the solar cell panel 3 has a lower ground height than this, Although a riding-type agricultural machine cannot be used, a walking-type agricultural machine can be used, and the solar panel 3 can be used for photovoltaic power generation facilities having different ground heights.

DESCRIPTION OF SYMBOLS 1 Farmland 2 Base 3 Solar cell panel 3c Edge 3d Edge 4 Cultivated surface
DESCRIPTION OF SYMBOLS 5 Mounting leg part 5h Height 6 Mounting leg part 6h Height 10 Support 11 Support frame 11a Axle core 12 Support frame 12a Axle core 13 Beam frame 15 Reinforcement member 20 Drain guide 20a Lower surface 20b Water channel 21 Drain port 22 Drain plate A Corner part B Corner part L Tangent P1 Low position P2 Low position X Contour

Claims (14)

A solar panel,
A pedestal that is installed on farmland and supports the solar cell panel positioned above the cultivation surface;
The solar cell panel is included in a portion of the peripheral portion where droplets attached to the surface of the solar cell panel can reach by falling, and included in a portion that is vertically above the cultivation surface. At each point on the outline of the solar cell panel when the panel is viewed from the back side, the tangent line that touches the outline and is included in the plane including the outline is supported by the gantry in a state that none of them is parallel to the horizontal plane. There are solar power generation facilities. A solar panel,
A pedestal that is installed on farmland and supports the solar cell panel positioned above the cultivation surface;
The solar cell panel is tilted with respect to a horizontal plane so that a corner portion of the surface shape is positioned at the lowermost end and two edge portions extending from the corner portion are inclined with respect to each other. Photovoltaic power generation equipment supported by a gantry.   The solar power generation facility according to claim 2, wherein the surface shape is a quadrangular shape. The gantry includes a pair of support frames extending in a horizontal direction,
The said solar cell panel is supported by a pair of said support frame in the state in which the direction along a horizontal edge part inclines with respect to the direction in alignment with each axial center of a pair of said support frame. Solar power generation equipment. The gantry includes a pair of support frames extending in the horizontal direction in a state of being spaced in the direction along the vertical direction and spaced in the direction along the horizontal direction,
The photovoltaic power generation facility according to any one of claims 1 to 4, wherein the solar cell panel is received and supported from below by the pair of support frames. The gantry includes a beam frame that supports a pair of the support frames,
One support frame of the pair of support frames is connected to the upper side of the beam frame,
The photovoltaic power generation facility according to claim 4 or 5, wherein the other support frame of the pair of support frames is connected to a lower side of the beam frame. A pair of attachment legs connected across a pair of the support frames are provided so as to project from the solar cell panel toward the pair of support frames in a state of being aligned in the lateral width direction of the solar cell panel,
The height at which one mounting leg of the pair of mounting legs protrudes from the solar cell panel is higher than the height at which the other mounting leg protrudes from the solar cell panel. Solar power generation equipment as described in the paragraph.   One of four corners of the solar cell panel, with the direction along the lateral edge of the solar cell panel being inclined with respect to the direction along the axis of each of the pair of support frames. The photovoltaic power generation facility according to claim 7, wherein the pair of mounting leg portions are coupled to the pair of support frames in a state where one corner portion is positioned lower than the other three corner portions. A drainage guide along a lateral edge extending from the corner portion at the lowest end of the solar cell panel is provided in the solar cell panel,
The photovoltaic power generation facility according to any one of claims 2 to 8, wherein a drain outlet of the drainage guide is located on a lateral outer side of the solar cell panel with respect to the corner portion at the lowest end.   In the drainage guide, a distance between a straight line connecting the lowest position at the start point of the water channel and the lowest position at the end point of the water channel and a lateral edge extending from the corner portion at the lowermost end is closer to the drain port side. The photovoltaic power generation facility according to claim 9 configured to be wide.   11. The photovoltaic power generation facility according to claim 9, wherein the drainage guide is configured such that a lower surface thereof is inclined such that the lower surface is positioned closer to the drainage port side. The gantry includes a pair of support frames that support the solar panel, a beam frame that supports the pair of support frames, a column that stands on a farm and supports the beam frame, and the column and the beam frame. And a reinforcing member connected to
The photovoltaic power generation facility according to any one of claims 9 to 11, wherein the drainage port of the drainage guide is located immediately above the reinforcing member.   The photovoltaic power generation facility according to any one of claims 9 to 12, wherein the drainage guide is provided with a draining plate extending downward from the drainage port. A solar power generation method for generating power using the solar power generation facility according to claim 1.

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