JP2015226413A - Reflection device for photovoltaic power generation, photovoltaic power generation facility, improvement method for photovoltaic power generation facility, and photovoltaic power generation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for increasing an amount of electric power generated by the reception of sun light of a photovoltaic power generation panel, while suppressing an increase in cost.SOLUTION: A photovoltaic power generation facility includes a plurality of photovoltaic power generation units U. A reflector 400 of a white cloth is arranged between photovoltaic power generation units U in the longitudinal direction. The edges in the longitudinal direction of the reflector 400 are fixed to frames 100 of photovoltaic power generation units U in the longitudinal direction, and the reflector is in a state where the reflector is suspended from the earth S while drawing a suspension curve in a side view. Sun light to fundamentally direct toward the land surface S is reflected on the upper surface of the reflector 400, and is directed toward a photovoltaic power generation panel 200 of the photovoltaic power generation units U, the photovoltaic power generation panel being on the back side of the reflector.

Description

  The present invention relates to a technique for efficiently concentrating sunlight on a photovoltaic power generation panel, which contributes to increase the efficiency of photovoltaic power generation.

  In recent years, the importance of renewable energy has increased. One of them is solar power generation. As is well known, solar power generation is a method in which light energy of sunlight hitting a solar power generation panel is converted into electric power by the solar power generation panel and the electric power is used.

Whether or not solar power generation is widely used depends largely on its economic rationality. In addition to solar power generation, there are various types of power generation such as thermal power generation, nuclear power generation, hydroelectric power generation, wind power generation, etc. If solar power generation is economically superior to power generation by these other methods Of course, there are other factors to consider, but the spread of solar power generation should progress.
Further, as one form of solar power generation, there is a so-called mega solar which is a relatively large scale in which a large number of solar power generation panels are arranged side by side in a mountain or the like, although the scale is large or small. Although there are exceptions, in the case of large-scale solar power generation, the owner of the solar panel sells the power generated by the solar power generation panel to a third party such as a power company (so-called power sale) for money. Profitable. The monetary profit from power sales plays a major role in the spread of solar power generation, but whether solar power generation for the purpose of selling power is widespread also depends greatly on its economic rationality. When the owner of a solar panel (solar power generation company) sells electricity, the higher the power selling price per unit of electricity generated x the amount of electricity generated, the greater the cost including both initial and running Solar power generation companies will invest more actively in solar power generation.
Of the above three factors, the price of electricity sold per unit of electricity varies depending on national policies and the convenience of power companies, and is difficult to control from the viewpoint of solar power companies. Therefore, the efforts that solar power generation companies should make are limited to two points: how much power generation can be increased and how much cost can be reduced.

In the mega solar where a large number of photovoltaic power generation panels are arranged, various devices have already been made to increase the amount of power generation. For example, a large number of photovoltaic panels are arranged so that they do not shade each other on the surface of the other photovoltaic panels. However, when photovoltaic panels are arranged so as not to shade the surface of other photovoltaic panels, the spacing between photovoltaic panels tends to increase. This means that the sun tends to fall on the ground surface between adjacent photovoltaic panels. Of course, sunlight that has fallen to the surface of the earth basically does not contribute to power generation.
On the other hand, for example, in a high latitude area in winter, it is known that the amount of power generated by a photovoltaic power generation panel increases when it is fine after snowfall and there is no snow on the surface of the photovoltaic power generation panel. This is because the sunlight falling on the surface of the earth is reflected by snow and travels toward the photovoltaic power generation panel, contributing to power generation performed by the photovoltaic power generation panel. And to increase the amount of power generated by the photovoltaic power generation panel using this reasoning, the reflectors are placed on the ground surface between the photovoltaic power generation panels. It has been put into practical use as a technology for reflecting toward the power generation panel.
And the technique using this reflector has achieved a certain result.

However, the period of time for which such technology is successful is relatively short. Since the photovoltaic power generation panel is disposed outdoors, the reflector is also disposed outdoors. Therefore, foreign matters such as earth and sand and fallen leaves immediately accumulate on the surface of the reflector arranged on the ground surface, and the effect of reflecting the sunlight is lost in a relatively short period of time.
Of course, the effect is restored by cleaning the surface of the reflector every certain period, but the cost is not stupid.

  This invention makes it the subject to provide the technique for increasing the electric energy which a solar power generation panel receives sunlight and suppresses a raise of cost.

In order to solve the above-mentioned problems, the present applicant proposes the following invention.
The invention of the present application is a solar power generation reflection device used in a solar power generation facility in which a large number of solar power generation panels are arranged, and includes a front row solar power generation panel in a tilt direction and a rear row solar power generation. It is a reflector for photovoltaic power generation, which is arranged in a state of being floated from the ground surface between the panels, and includes a reflector whose upper surface reflects sunlight. is there.
This solar power generation reflecting device is arranged in a state of being floated from the ground surface. Therefore, the possibility that foreign matter such as earth and sand and fallen leaves will accumulate on the upper surface of the reflector that reflects sunlight is lower than when the reflector is on the ground surface.

The reflector in this invention should just be that the upper surface reflects at least sunlight. The reflection here includes not only specular reflection but also scattering. For example, even if the upper surface of the reflector is not a mirror surface but white, it does not prevent it from being a reflector.
The reflector may be plate-shaped. The reflector may be cloth-like.

An appropriate number of openings may be provided in a part of the reflector so that foreign matter accumulated on the upper surface thereof can be dropped onto the ground surface by vibrating the reflector.
Even if the reflector floats from the ground surface, there is no possibility that foreign matter will be placed on the upper surface of the reflector. In such a case, it is necessary to remove the foreign matter from the upper surface of the reflector. However, if the reflector is appropriately provided with an opening, it is easy to remove the foreign matter from the opening by vibrating the reflector. . As a result, it is possible to reduce the maintenance cost for removing foreign substances from the reflector. What is necessary is just to determine suitably the magnitude | size and number of opening in the range effective in dropping a foreign material from there.
When the reflector has a plate shape, the reflector may be configured in a plate shape by arranging a plurality of bars or narrow plates with a gap between adjacent ones. In this case, a gap between a bar or a narrow plate can be the opening. The rod or the narrow plate may be arranged in the front-rear direction or the lateral direction.
When the reflector is in a cloth shape, the reflector may be formed in a cloth shape by arranging a plurality of strings or bands with a gap between adjacent ones. In this case, a gap between a string or a band can be the opening. The string or band may be arranged in the front-rear direction or the lateral direction.

The reflector is fixed to a gantry supporting the photovoltaic power generation panel in the front row on the front side and to a gantry supporting the photovoltaic power panel in the rear row on the rear side. It doesn't matter.
A reflector can also be arrange | positioned in the state which floated from the ground surface by supporting the suitable location by another member, for example, the pillar standing on the ground surface, without utilizing a mount frame. However, in order to install the solar power generation panel in a state where an appropriate inclination is given, it is a common practice to place the solar power generation panel on a gantry constructed of, for example, metal pipes. By attaching the reflector to such a gantry, it is possible to suppress an increase in the cost for installing the reflection device.
Both the fixing of the reflector to the gantry on the front side and the rear side may be detachable. For example, this can be achieved by providing a locking portion such as a suitable hook on the gantry side and a locked portion that can be detachably locked. By doing so, for example, the reflector can be removed from the gantry when necessary, for example, when maintaining the photovoltaic power generation panel or approaching a typhoon.

The reflector may be curved such that when viewed from the side, lower portions than both ends thereof are present therebetween. In simple terms, this means that the shape of the reflector is convex downward when viewed from the side. By doing so, the reflection efficiency of the sunlight to the photovoltaic power generation panel of the rear side by a reflector may increase.
In the case where the reflector is cloth-like, the length of the rectangular reflector in the front-rear direction is, for example, the sunlight positioned behind the reflector from the rear side of the sunlight panel positioned in front of the reflector. By making it longer than the length up to the front side of the panel, it is possible to easily make the reflector have a downwardly convex shape. Further, even when the reflector is plate-shaped, for example, two linear bodies extending in the front-rear direction are arranged at both ends in the width direction of the reflector, and the linear body is interposed between the linear bodies. By arranging a rod or a narrow plate so as to be orthogonal to each other and fixing both ends thereof to a linear body, the reflector can take a convex shape downward.
The shape of the downwardly convex shape described above is basically determined by the weight of the reflector, but if necessary, the shape can be changed as appropriate by providing a weight at an appropriate location on the reflector. It is also possible to do.

The applicant of the present application also proposes a photovoltaic power generation facility as an invention that produces the same effect as the reflection device of the present application.
As an example, it is a photovoltaic power generation facility in which a large number of photovoltaic power generation panels are arranged, and at least one place between the photovoltaic power generation panel in the front row in the inclined direction and the photovoltaic power generation panel in the rear row, A solar mounted reflector, which is arranged in a state of being floated from the surface of the earth and includes a reflector whose upper surface reflects sunlight. Photovoltaic facilities can be mentioned.
The applicant of the present application also proposes a method for improving a photovoltaic power generation facility as an invention that produces the same effect as the reflecting device of the present application.
As an example, in a photovoltaic power generation facility in which a large number of photovoltaic power generation panels are arranged, the solar power generation panel is suspended from the ground surface between the photovoltaic power generation panel in the front row in the inclined direction and the photovoltaic power generation panel in the rear row. A method for improving photovoltaic power generation equipment, including a reflector for solar power generation, including a reflector that is disposed and at least an upper surface of the reflector is configured to reflect sunlight. Can do. This improved method can be applied not only to newly installed solar power generation equipment but also to existing solar power generation equipment.
The present applicant also proposes a highly efficient solar power generation method.
An example of the method is a photovoltaic power generation facility in which a large number of photovoltaic power generation panels are arranged, and at least one place between the photovoltaic power generation panel in the front row in the inclined direction and the photovoltaic power generation panels in the rear row. , Arranged in a state of being floated from the ground surface, and having a reflector for solar power generation, including a reflector whose upper surface reflects sunlight. This is a solar power generation method for performing solar power generation using

The side view which shows roughly the solar power generation facility before it improves with the improvement method of the solar power generation facility in one Embodiment of this application. The side view which shows the state which attached the front latching member and the rear latching member to the photovoltaic power generation equipment shown in FIG. The side view which shows the state which attached the reflector to the solar energy power generation equipment shown in FIG. The top view which shows the state which attached the reflector to the solar energy power generation equipment shown in FIG. The top view which shows the reflector used in the modification 1. FIG. The top view which shows the reflector used in the modification 2. FIG. The top view which shows the reflector used in the modification 3. FIG. The side view which shows schematically the structure of the solar power generation facility after the reflector is attached in the modification 5. FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

First, the solar power generation facility before improvement, which is improved in this embodiment, will be described.
Photovoltaic installations are effectively mega solar. The solar power generation facility may be an existing one that is already operating or performing solar power generation, or may be one that is not yet in operation to start solar power generation.
The solar power generation facility may be a very general one.
The solar power generation facility includes a solar power generation panel 200 mounted on a gantry 100 (hereinafter referred to as a solar power generation unit U) (FIG. 1).
The gantry 100 mounts the photovoltaic power generation panel 200 and determines the orientation of the photovoltaic power generation panel 200 and the angle with respect to the ground surface S. The gantry 100 has a strength enough to withstand predetermined wind and rain, as is common, and firmly supports the photovoltaic power generation panel 200.
If it has the above-mentioned function, there will be no restriction | limiting in particular in the structure of the mount frame 100. FIG.
The gantry 100 of this embodiment is not limited to this, but is made of a metal pipe. Although not limited to this, the gantry 100 of this embodiment includes a front pillar 110 that is a front pillar, a rear pillar 120 that is a rear pillar, and a brace 130 that connects them. Actually, there are a plurality of front pillars 110 (in many cases, there are two near both ends in the width direction of the photovoltaic power generation panel 200, which is the case in this embodiment), and the rear pillar 120 is the same. Further, the gantry 100 includes a pipe corresponding to a beam extending in a direction perpendicular to the paper surface of FIG. 1 connecting the plurality of front pillars 110 and a pipe corresponding to a beam extending in a direction perpendicular to the paper surface connecting the plurality of rear pillars 120. However, illustration of these is omitted.
The photovoltaic power generation panel 200 may be an existing photovoltaic power generation panel. The photovoltaic power generation panel 200 receives sunlight and generates electric power.
The solar power generation facility is formed by arranging a number of solar power generation units U as described above arranged vertically and horizontally (see, for example, FIG. 4). Although the photovoltaic power generation panel 200 has a predetermined width, the photovoltaic power generation units U are arranged side by side so that the photovoltaic power generation panels 200 adjacent in the horizontal direction have a slight gap or are arranged without gaps. At the same time, the photovoltaic power generation panels 200 that are adjacent to each other in the front and rear are arranged in the front and rear so that the shade created by one of them does not cover the photovoltaic power generation panels 200 before and after that. Note that the right side in FIG. 1 is the front side of the photovoltaic power generation panel 200.
The solar power generation equipment may be provided with a power conditioner, a substation equipment, or the like as necessary. However, since these are well-known ones, description thereof is omitted.

In order to improve the solar power generation facility as described above and increase the power generation capacity of the solar power generation facility, the following may be performed.
First, the front locking member 310 and the rear locking member 320 each having a semicircular groove are respectively fixed to the front and back of the gantry 100 (FIG. 2). The front locking member 310 and the rear locking member 320 are for detachably fixing a front locked member and a rear locked member, which will be described later, respectively. The front locking member 310 and the rear locking member 320 may be fixed to the gantry 100 by a known method such as using an appropriate hardware.
The front locking member 310 is attached to the front side of the gantry 100, and the rear locking member 320 is attached to the rear side of the gantry 100. More specifically, the front locking member 310 is attached to each of the two front pillars 110 of the gantry 100, and the rear locking member 320 is attached to each of the two rear pillars 120 of the gantry 100. Although not limited to this, in this embodiment, the front locking member 310 is slightly below the upper end of the front pillar 110 of the gantry 100 (directly below the photovoltaic power generation panel 200), and the rear locking member 320 is the gantry. It is attached to the upper end of the rear column 120 slightly below 100 (directly below the photovoltaic power generation panel 200).

Next, reflection occurs between the rear locking member 320 attached to the front gantry 100 and the front locking member 310 attached to the rear gantry 100 of the photovoltaic power generation units U adjacent to each other in the front-rear direction. Mount the body 400 (FIG. 3). The reflector 400 reflects the sunlight L toward the photovoltaic power generation panel 200 located on the rear side.
The reflector 400 in this embodiment is a cloth, but is not limited thereto. The reflector 400 may be woven or non-woven, and may be knitted. The reflector 400 may be a single layer or a multilayer. For example, the reflector 400 may be one in which the surface of a base material made of a woven fabric is covered with a fluororesin excellent in antifouling. In order to further increase the antifouling property, a photocatalyst layer having a self-cleaning function may be provided on the surface.
As described above, the reflector 400 reflects sunlight on the surface thereof. In order to increase the function, a mirror sheet may be attached to the surface of the reflector 400. Even if it is not so much, if the brightness of the color of the surface of the reflector 400 is high, more specifically, for example, if the surface of the reflector 400 is white or near milky white, the reflector 400 reflects sunlight well. To do.
The shape of the reflector 400 is not limited to this, but is rectangular in this embodiment. The width of the reflector 400 is the same as or slightly larger than the width of the photovoltaic power generation panel 200, and the width of the reflector 400 is not limited to this. The width of the panel 200 is slightly larger. The length of the reflector 400 in the front-rear direction is longer than the distance from the front locking member 310 to the rear locking member 320 facing each other.
The reflector 400 in this embodiment is a cloth whose surface is at least white.

As shown in FIGS. 3 and 4, the front locking member 410 and the rod-shaped body as the rear locking member 420 are attached to both ends of the reflector 400. The front locked member 410 and the rear locked member 420 of this embodiment are, for example, metal pipes having a circular cross section, although not limited thereto. The front locked member 410, the rear locked member 420, and the reflector 400 may be fixed appropriately by a known method.
The lengths of the front locked member 410 and the rear locked member 420 are the same as or slightly longer than the width of the photovoltaic power generation panel 200, but are not limited thereto. The length of the reflector 400 is the same.
The front locked member 410 is inserted into and supported by the grooves of the two front locking members 310 of one solar power generation unit U, so that the rear locked member 420 is the front solar power generation unit. By inserting both ends into the grooves of the two rear locking members 320 of U and supporting them, the reflector 400 has a front side of one solar power generation unit U and a rear side of the front solar power generation unit U. It becomes a state stretched between. The length of the front locked member 410 is longer than the distance between the two front locking members 310 that support it, and the length of the rear locked member 420 is the two rear locking members that support it. Since it is longer than the distance between the members 320, the front locked member 410 does not drop from the front locking member 310, and the rear locked member 420 does not drop from the rear locking member 320.
Further, as described above, the length of the reflector 400 in the front-rear direction is longer than the distance from the front locking member 310 to the rear locking member 320 facing each other. When the reflector 400 attached between the power generation units U is viewed from the side as shown in FIG. 3 between the two solar power generation units, a portion whose height is lower than both ends is intermediate in the middle. It exists and becomes a sagging state. At this time, the reflector 400 floats from the ground surface S. Although the length of the reflector 400 is longer than the distance from the front locking member 310 to the rear locking member 320 facing each other, the length of the reflector 400 is longer than that of the two photovoltaic power generation units U. It is shortened to such an extent that its lowest part floats from the ground surface S when mounted in between. Such a shape when the reflector 400 is viewed from the side is a so-called suspension curve. By attaching an appropriate weight to an appropriate position at an appropriate position by an appropriate method, for example, the suspension 400 A curve can be made into a desired shape. Since the configuration of the weight and the method of attaching the weight to the reflector 400 can be handled by well-known techniques, a detailed description thereof will be omitted. For example, the weight is attached to the front side near the photovoltaic power generation unit U. Then, the lowest position of the reflector 400 approaches the front photovoltaic power generation unit U.

Thus, the improvement of the solar power generation facility is completed.
After that, the solar power generation by the solar power generation facility may be performed in the same manner as the solar power generation by the normal solar power generation facility.
In the improved photovoltaic power generation facility, when solar power generation is performed, at least a part of the sunlight that should have been directed to the ground surface S is apparent from the line L shown in FIG. Thus, it reflects on the surface of the reflector 400 and goes to the photovoltaic power generation panel 200. Thereby, in this solar power generation facility, solar power generation is obviously performed with higher efficiency than when the reflector 400 is not present.
Moreover, since the reflector 400 floats from the ground surface, the possibility that foreign matter will be placed on the reflector 400 is certainly lower than when the reflector 400 is installed on the ground surface.
In addition, the attachment of the reflector 400 to the two photovoltaic power generation units U adjacent to the front and rear is performed by attaching the front locked member 410 to the two front locking members 310 of one solar power generation unit U as described above. The both ends are inserted into the groove, and the rear locked member 420 is inserted by inserting both ends into the grooves of the two rear locking members 320 of the front photovoltaic power generation unit U. Yes. Therefore, both ends of the front locked member 410 are taken out from the grooves of the two front locking members 310 of the one solar power generation unit U, and both ends of the rear locked member 420 are connected to the front photovoltaic power generation. The reflector 400 can be removed from the two photovoltaic power generation units U by being taken out from the grooves of the two rear locking members 320 of the unit U. That is, the reflector 400 is fixed to the photovoltaic power generation unit U in this embodiment. Thereby, the reflector 400 in this embodiment can be removed from the solar power generation unit U when necessary, for example, during maintenance of the solar power generation facility or when approaching a typhoon. However, the reflector 400 is not necessarily fixed to the two photovoltaic power generation units U in a detachable manner.

<Modification 1>
Hereinafter, modifications of the embodiment described above will be described.
Modification 1 is different from the above-described embodiment only in that the reflector 401 shown in FIG. 5 is used.
The reflector 401 in the modification 1 is cloth-like as a whole as in the case of the above-described embodiment. Although not limited to this, the reflector 401 in the first modification is formed with an appropriate number of rectangular openings 401A (five in the first modification). Such an opening 401A is such that foreign matter accumulated on the upper surface of the reflector 401 can be dropped onto the ground surface S by vibrating the reflector 401 (including the case of shaking). It is supposed to be. That is, the shape, size, position, etc. of the opening 401A are determined so as to be possible.
Note that the width of the reflector 401 in Modification 1 is shorter than the lengths of the front locked member 410 and the rear locked member 420. In this way, in order to attach the reflector 401 to the two photovoltaic power generation units U, the both ends of the front locked member 410 are inserted into the grooves of the two front locking members 310 of one photovoltaic power generation unit U. When both ends of the rear locked member 420 are inserted into the grooves of the two rear locking members 320 of the front photovoltaic power generation unit U, the reflector 401, the front locking member 310, and the rear locking member Since the member 320 does not interfere, the damage to the reflector 401 can be suppressed.

<Modification 2>
Modification 2 is different from the above-described embodiment only in that the reflector 402 shown in FIG. 6 is used.
The reflector 402 in the modified example 2 is cloth-like as a whole as in the case of the above-described embodiment. In the second modification, the reflector 402 is formed by stretching a plurality of thin belt-like belt bodies 402A between the front locked member 410 and the rear locked member 420. The band 402A can be obtained, for example, by thinly cutting the reflector 400 of the embodiment. The width of the band 402A can be determined as appropriate. The interval between the band bodies 402A is determined by causing the foreign body accumulated on the upper surface of the reflector 402 to vibrate (including a case where the reflector 402 is shaken) to cause a gap between adjacent band bodies 402A. It is supposed to be able to be dropped on the ground surface S.
Note that the width of the reflector 402 in the second modification is also shorter than the lengths of the front locked member 410 and the rear locked member 420 for the same reason as in the first modified example.
In addition, the belt body 402A of the second modification can be replaced with a string. The string is, for example, a rope of white or similar color. It is not necessary for the string to take almost the interval between the adjacent strings.

<Modification 3>
Modification 3 is different from the above-described embodiment only in that the reflector 403 shown in FIG. 7 is used.
The reflector 403 in Modification 3 is cloth-like as a whole, as in the above-described embodiment. The reflector 403 in Modification 3 has two linear bodies 403A stretched in parallel near both ends of the front locked member 410 and the rear locked member 420. The linear body 403A is, for example, a rope or a wire. In addition, a plurality of thin strips 403B are stretched over the reflector 403. The band 403B can be obtained, for example, by cutting the reflector 400 of the embodiment into thin pieces. The width of the band 403B can be determined as appropriate. The interval between the strips 403B is a gap between adjacent strips 403B by causing the reflector 403 to vibrate (including the case where the reflector 403 is shaken) with foreign matter accumulated on the upper surface of the reflector 403 during use. It is supposed to be able to be dropped on the ground surface S.
The width of the reflector 403 in Modification 3 is also shorter than the lengths of the front locked member 410 and the rear locked member 420 for the same reason as in Modified Example 1.
Note that the belt body 403B of Modification 3 can be replaced with a string. The string is, for example, a rope of white or similar color. It is not necessary for the string to take almost the interval between the adjacent strings.

<Modification 4>
Modification 4 is almost the same as Modification 3, but the configuration of the reflector is slightly different from Modification 3.
As described above, the reflector 403 of Modification 3 was cloth-like as a whole.
However, the reflector of the modification 4 is plate shape as a whole. In the reflector of the modified example 4, the band 403B in FIG. 7 is made of a plate. The plate may have the same shape as that of the belt body 403B, and a linear body having a gap similar to that between the adjacent ones of the belt body 403B of the modification 3 is provided between the adjacent ones. Passed between. The material of the board is not particularly limited, but it can be made of wood or resin in view of its light weight. Further, at least the upper surface of the plate may be a mirror surface, and even if it is not a mirror surface, the color can be selected as in the case of the reflector 400 of the embodiment.
When the belt body 403B of the third modification is replaced with a plate, the reflector stretched between the two photovoltaic power generation units U has a width in the front-rear direction of the plate that disturbs its smoothness. Draw a convex curve roughly below.
In addition, the strip | belt body which is a board of the modification 4 can be replaced with a stick. The bar is, for example, a wooden or resin bar of white or similar color. It is not necessary for the rods to take almost any gap between adjacent bars.

<Modification 5>
Modification 5 is different from the above-described embodiment only in that the reflector 405 shown in FIG. 8 is used.
The reflector 405 in the modified example 5 is a plate.
The reflector 405 as a plate is stretched between two photovoltaic power generation units U adjacent in the front-rear direction.
The reflector 405 has a rectangular shape, and the material thereof is the same as that in the fourth modification. The surface on the upper side may be a mirror surface, and when it is not a mirror surface, the color may be white or a color close to it.
The reflector 405 has a rear end on the front side of one frame 100, for example, near the upper ends of the two front columns 110, and a front end on the rear side of the front frame 100, for example, near the upper ends of the two rear columns 120. Fixed.
At this time, since the reflector 405 is plate-shaped, it does not draw a convex curve downward. However, the sunlight reflected by the upper surface of the reflector 405 goes to the photovoltaic power generation panel 200 of the photovoltaic power generation unit U on the rear side.
Fixing of the reflector 405 to the two photovoltaic power generation units U may or may not be detachable.
Moreover, you may provide the opening for dropping on the ground surface S by making the reflector 405 vibrate the reflector 405 in the reflector 405 which is a board.

  In addition, in the above embodiment and each modification, a reflector was supposed to be attached to the mount frame 100 of the photovoltaic power generation unit U before and behind that. Regardless, for example, the four corners are fixed to a new pillar or the like built in the vicinity of the gantry 100, and the reflector is placed between the front and rear solar power generation units U in a state where the reflector is floated from the ground surface S. It is also possible.

DESCRIPTION OF SYMBOLS 100 Base 110 Front pillar 120 Rear pillar 130 Bracing 200 Solar power generation panel 310 Front locking member 320 Rear locking member 400 Reflector 401 Reflector 401A Opening 402 Reflector 402A Band 403 Reflector 403A Linear body 403B Band 405 Reflector 410 Front locked member 420 Rear locked member S Ground surface U Solar power generation unit

Claims (14)

A solar power generation reflection device used in a solar power generation facility in which a large number of solar power generation panels are arranged,
It is placed between the front panel photovoltaic panel in the inclined direction and the rear panel photovoltaic panel in a state of floating from the ground surface, and at least the upper surface reflects the sunlight. Including reflectors,
Reflector for solar power generation. The reflector is plate-shaped,
The reflecting device for solar power generation according to claim 1. The reflector is cloth-like,
The reflecting device for solar power generation according to claim 1. A part of the reflector is provided with an appropriate number of openings that can drop the foreign matter accumulated on the upper surface thereof to the ground surface by vibrating the reflector.
The reflecting device for solar power generation according to claim 1. The reflector is a plate formed by arranging a plurality of bars or narrow plates with a gap between adjacent ones, and the opening is the gap.
The reflecting device for solar power generation according to claim 4. The rod or the narrow plate is arranged in the front-rear direction or the lateral direction,
The solar power generation reflecting device according to claim 5. The reflector is configured in a cloth shape by arranging a plurality of strings or bands with a gap between adjacent ones, and the opening is the gap.
The reflecting device for solar power generation according to claim 4. The string or belt is arranged in the front-rear direction or the lateral direction,
The solar power generation reflecting device according to claim 7. The reflector is fixed to a gantry supporting the photovoltaic power panels in the front row on the front side and to a gantry supporting the photovoltaic power panels in the rear row on the rear side. ,
The reflecting device for solar power generation according to claim 1. Both the fixing of the reflector to the gantry on the front side and the rear side can be made detachable.
The solar power generation reflecting device according to claim 9. When the reflector is viewed from the side, the reflector is curved so that a portion lower than both ends exists between the two,
The reflection device for photovoltaic power generation according to claim 3, 7 or 8. A solar power generation facility in which a large number of solar power generation panels are arranged,
At least one place between the front-row photovoltaic panels in the tilt direction and the rear-row photovoltaic panels in a state of floating from the ground surface, and at least the upper surface reflects sunlight A reflector for solar power generation is installed, including a reflector adapted to
Equipment for solar power generation. In the photovoltaic power generation facility where a large number of photovoltaic power generation panels are arranged,
It is placed between the front panel photovoltaic panel in the inclined direction and the rear panel photovoltaic panel in a state of floating from the ground surface, and at least the upper surface reflects the sunlight. Mounting reflectors for solar power, including reflectors
A method for improving solar power generation facilities. It is a solar power generation facility in which a large number of solar power generation panels are arranged,
At least one place between the front-row photovoltaic panels in the tilt direction and the rear-row photovoltaic panels in a state of floating from the ground surface, and at least the upper surface reflects sunlight Including a reflector that is adapted to perform solar power generation using a solar power reflecting device attached thereto,
Solar power generation method.

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