Inclination angle determination method for photovoltaic power generation panel

Abstract

To provide an inclination angle determination method for photovoltaic power generation panel that can suppress light hazard in the circumference of a photovoltaic power generation panel in an easy way.SOLUTION: There is provided an inclination angle determination method that determines an inclination angle θ of a photovoltaic power generation panel at an installation time. The inclination angle determination method comprises: a constructable range setting step (step S11) of setting a panel constructable range A (a constructable range of a photovoltaic power generation panel); a glare-proof object setting step (step S12) of setting a glare-proof object C in a circumference of the panel constructable range A; a glare-proof disposition azimuth setting step (step S13) of setting a glare-proof disposition azimuth B based upon the panel constructable range A on the basis of a position of the glare-proof object C; and an inclination setting step (step S15, S16) of setting the inclination angle θ of the photovoltaic power generation panel to such an angle that the photovoltaic power generation panel is positioned lower as proceeding in a direction opposite to the glare-proof disposition azimuth B.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a technique for determining the inclination angle of a photovoltaic power generation panel at the time of installation. [Background technology]

[0002] Photovoltaic panels that use sunlight to generate electricity are installed in sunny locations such as on the roofs of houses. However, the reflected light from the photovoltaic panels can cause light pollution due to glare in the surrounding area. For this reason, various anti-glare methods have been proposed.

[0003] For example, Patent Document 1 discloses a cover glass (low-reflectance material) for a solar power generation panel. By providing the cover glass described in Patent Document 1 on the surface of a solar power generation panel, the solar power generation panel can be made anti-glare. Other possible anti-glare methods include blocking reflected light with a structure such as a fence, or generating power while moving the solar power generation panel by tracking the sunlight.

[0004] However, the above anti-glare methods require modifications to the solar power generation panel and additional materials, and therefore an anti-glare method capable of suppressing light pollution around the solar power generation panel in a simple manner is desired. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2001-358346 A Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and the problem to be solved by the present invention is to provide a method for determining the tilt angle of a solar power panel that can suppress light pollution around the solar power panel in a simple manner. [Means for solving the problem]

[0007] The problem to be solved by the present invention has been described above, and the means for solving this problem will now be described.

[0008] That is, claim 1 provides a tilt angle determination method for determining the tilt angle of a solar power generation panel at the time of installation, comprising: a possible installation range setting step for setting a possible installation range of the solar power generation panel; an anti-glare object setting step for setting anti-glare objects surrounding the possible installation range; an anti-glare treatment orientation setting step for setting an anti-glare treatment orientation based on the possible installation range based on the position of the anti-glare object; and a tilt setting step for setting the tilt angle of the solar power generation panel to an angle such that the solar power generation panel is positioned downward as it moves in the opposite direction to the anti-glare treatment orientation.

[0009] In claim 2, in the tilt setting step, the tilt angle is set so that reflected light having an incident angle on the solar power generation panel equal to or greater than a predetermined threshold is not directed toward the anti-glare object.

[0010] In claim 3, in the tilt setting step, the tilt angle is set so that reflected light whose incident angle on the solar panel is equal to or greater than a predetermined threshold is reflected in a direction within a predetermined range based on the vertical direction.

[0011] In claim 4, in the anti-glare treatment orientation setting step, the periphery of the possible installation range is divided into a plurality of areas, and if the anti-glare object is located in two or more of the plurality of areas, each orientation toward the two or more areas is set as the anti-glare treatment orientation, and in the inclination setting step, the possible installation range is divided into a plurality of ranges based on the anti-glare treatment orientation, and the inclination direction of the solar power generation panel can be set individually in each of the plurality of ranges.

[0012] In claim 5, in the tilt setting step, when the two or more areas in which the anti-glare object is located are adjacent to each other, the tilt direction of the solar power generation panel can be set to one main direction. Effect of the Invention

[0013] The present invention has the following advantages.

[0014] According to claim 1, light pollution around the solar power generation panel can be suppressed in a simple manner.

[0015] In claim 2, it is possible to prevent reflected light with high luminance from reaching an object to be protected from glare.

[0016] According to claim 3, it is possible to prevent reflected light with high luminance from reaching an object to be protected from glare.

[0017] According to claim 4, even if the anti-glare object is located in a plurality of directions, light pollution to the anti-glare object can be suppressed.

[0018] According to claim 5, the method for installing the solar power generation panel can be simplified. [Brief description of the drawings]

[0019] [Figure 1] 4 is a flowchart showing the steps of a method for determining the tilt angle of a photovoltaic power generation panel according to one embodiment of the present invention. [Diagram 2] (a) A plan view showing a method for determining the anti-glare treatment direction when an anti-glare object is located on the north side, and (b) A plan view showing a method for determining the anti-glare treatment direction when an anti-glare object is located on the east side. [Diagram 3] (a) A plan view showing a method for determining the orientation of the anti-glare treatment when an anti-glare object is on the west side, and (b) A plan view showing a method for determining the orientation of the anti-glare treatment when an anti-glare object is on the northeast side. [Figure 4](a) A plan view showing a method for determining the orientation of the anti-glare treatment when there are anti-glare objects on the north and northeast sides. (b) A plan view showing a method for determining the orientation of the anti-glare treatment when there are anti-glare objects on the northeast, east, and southeast sides. [Diagram 5] 13 is a plan view showing a method for determining the orientation of anti-glare treatment when there are anti-glare objects on the east and west sides. FIG. [Figure 6] (a) A plan view showing the possible range of panel installation when there is an anti-glare object on the north side, (b) A side view showing the incident light and reflected light when the sun's altitude is at its minimum, and (c) A side view showing the incident light and reflected light when the sun's altitude is at its maximum. [Figure 7] (a) A plan view showing the possible range of panel installation and the anti-glare object when there is an anti-glare object on the east side, (b) A side view showing the incident light and reflected light when the sun's altitude is at its minimum, and (c) A side view showing the incident light and reflected light when the sun's altitude is at its maximum. [Figure 8] 1A is a plan view showing the inclination direction of a solar panel when there are anti-glare objects on the east and west sides, and FIG. 1B is a plan view showing the inclination direction of a solar panel when there are anti-glare objects on the north and east sides. [Figure 9] A plan view showing the inclination direction of a solar panel when there are anti-glare objects on the north and northeast sides. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] A method for determining the inclination angle of the photovoltaic power generation panel 1 according to one embodiment of the present invention will be described below.

[0021] The solar power generation panel 1 shown in Figures 2(a), 6 and 7 is a device that generates power by utilizing sunlight. The solar power generation panel 1 is installed in a sunny location such as the roof of a house.

[0022] Here, when the angle of incidence of sunlight on the solar panel 1 (the angle between the normal to the boundary surface and the traveling direction of the incident wave) is large (when the angle is close to parallel to the solar panel 1), the amount of sunlight reflected is large and the brightness is high. On the other hand, when the angle of incidence of sunlight on the solar panel 1 is small (when the angle is close to perpendicular to the solar panel 1), the amount of sunlight reflected is small. When sunlight with a large angle of incidence is reflected and reaches surrounding buildings, etc., it may cause light pollution due to glare in the surrounding area.

[0023] Therefore, in a method for determining the inclination angle of a solar power generation panel 1 according to one embodiment of the present invention, the inclination angle of the solar power generation panel 1 is set so that reflected sunlight with an incident angle of 60° or more on the solar power generation panel 1 does not (is unlikely to) reach surrounding buildings, etc. Note that in this specification, the "inclination angle" of the solar power generation panel 1 includes not only the numerical value of the angle of inclination but also the direction of inclination.

[0024] The following describes the procedure for determining the tilt angle of the solar power panel 1. The tilt angle of the solar power panel 1 is determined by steps S11 to S16 shown in Fig. 1. Note that steps S11 to S16 may be performed by a designer of the installation of the solar power panel 1, or may be automatically performed by a control unit.

[0025] In step S11, a panel laying possible range A (see Figs. 2 to 5) is set. Here, "panel laying possible range A" refers to the range in which the solar power generation panel 1 can be laid (planned to be laid). The panel laying possible range A is set using map information. Specifically, the panel laying possible range A is set, for example, by depicting the outline of the range in which the solar power generation panel 1 can be laid on a map. In this embodiment, the panel laying possible range A is set as a rectangle with a pair of parallel sides extending east-west and another pair of parallel sides extending north-south.

[0026] Next, in step S12, the position of anti-glare object C (object that may cause light pollution) among surrounding buildings is acquired. Here, "surrounding building" means a building that is a predetermined distance from the center of panel installation range A. Also, "anti-glare object C" means a part of a building from which the solar power generation panel 1 can be viewed on a daily basis (windows, balconies, common corridors, outdoor stairs, etc.) that is the object of anti-glare.

[0027] Next, in step S13, the anti-glare treatment direction B is determined. Here, "anti-glare treatment direction B" means the direction in which anti-glare treatment is required, and more specifically, means the direction of the position of the anti-glare object C based on the panel laying possible range A (in which direction the anti-glare object C is located as viewed from the panel laying possible range A). In this embodiment, the anti-glare treatment direction B is selected from eight directions, east, west, south, north, northeast, northwest, southeast, or southwest. A method for determining the anti-glare treatment direction B will be described below.

[0028] First, the area around the panel laying possible range A is divided into a plurality of areas corresponding to the anti-glare treatment direction B (east, west, south, north, northeast, northwest, southeast, or southwest). For example, straight lines passing through the four corners of the rectangular panel laying possible range A are drawn to divide the periphery of the panel laying possible range A into a plurality of areas. The straight lines are drawn to extend in a direction of 45° with respect to each side of the panel laying possible range A. More specifically, the straight lines passing through the northeast corner and the southwest corner of the panel laying possible range A are drawn to extend in the northwest (southeast) direction, and the straight lines passing through the northwest corner and the southeast corner of the panel laying possible range A are drawn to extend in the northeast (southwest) direction. Then, the direction of the area where the anti-glare object C is located among the divided areas (the direction seen from the panel laying possible range A) is set to the "anti-glare treatment direction B". In the following description, for the sake of convenience, the area in which the anti-glare object C is located may itself be referred to as the anti-glare treatment direction B.

[0029] For example, as shown in Figure 2(a), when the anti-glare object C is located north of the panel laying range A, the northern area b1 within the area in which the panel laying range A is located, and the area b2 adjacent to the north of the area in which the panel laying range A is located are set to the anti-glare treatment orientation B.

[0030] As shown in Figure 2(b), when the anti-glare object C is located to the east of the panel laying range A, the eastern area b3 of the area in which the panel laying range A is located, and the area b4 adjacent to the east of the area in which the panel laying range A is located are set to the anti-glare treatment orientation B.

[0031] As shown in Figure 3(a), when the anti-glare object C is located to the west of the panel laying range A, the western area b5 within the area in which the panel laying range A is located, and the area b6 adjacent to the west of the area in which the panel laying range A is located are set to the anti-glare treatment orientation B.

[0032] As shown in Figure 3 (b), when the anti-glare object C is located northeast of the panel laying range A, the area b7 adjacent to the northeast side of the area in which the panel laying range A is located is set to the anti-glare treatment orientation B.

[0033] Similarly, although not shown, if the anti-glare object C is located southeast of the panel-laying possible range A, the area adjacent to the southeast side of the area in which the panel-laying possible range A is located is set to the anti-glare treatment orientation B. If the anti-glare object C is located northwest of the panel-laying possible range A, the area adjacent to the northwest side of the area in which the panel-laying possible range A is located is set to the anti-glare treatment orientation B. If the anti-glare object C is located southwest of the panel-laying possible range A, the area adjacent to the southwest side of the area in which the panel-laying possible range A is located is set to the anti-glare treatment orientation B.

[0034] Furthermore, due to the movement of the sun, it is not conceivable that reflected sunlight will extend directly south of panel installation range A in Japan, where the implementation of this invention is envisaged, so the area south of the area in which panel installation range A is located, and the area adjacent to the south of the area in which panel installation range A is located, are not set to anti-glare treatment orientation B, regardless of whether or not an anti-glare object C is present.

[0035] Moreover, when the anti-glare object C spans a plurality of areas, all of the areas are set to the "anti-glare treatment orientation B."

[0036] For example, as shown in Figure 4(a), if the anti-glare object C straddles area b2 adjacent to the north side of the panel laying range A and area b7 adjacent to the northeast side, area b1 on the north side of the area in which the panel laying range A is located, as well as area b2 adjacent to the north side of the area in which the panel laying range A is located and area b7 adjacent to the northeast side, are set to the anti-glare treatment orientation B.

[0037] As shown in Figure 4(b), when the anti-glare object C spans area b7 adjacent to the northeast side of the panel laying range A, area b4 adjacent to the east side, and area b8 adjacent to the southeast side, area b3 on the east side of the area in which the panel laying range A is located, as well as area b7 adjacent to the northeast side of the area in which the panel laying range A is located, area b4 adjacent to the east side, and area b8 adjacent to the southeast side are set to the anti-glare treatment orientation B.

[0038] As shown in Figure 5 (a), when the anti-glare object C is located in area b4 adjacent to the east side of the panel laying range A, and area b6 adjacent to the west side, area b3 on the east side and area b5 on the west side of the area in which the panel laying range A is located, and area b4 adjacent to the east side and area b6 adjacent to the west side of the area in which the panel laying range A is located are set to the anti-glare treatment orientation B.

[0039] Next, in step S14, the range of solar altitudes of sunlight that the photovoltaic power generation panel 1 can receive during the daytime on the vernal (autumn) equinoxes, summer solstice, and winter solstice is acquired based on the latitude and longitude of the panel-layable range A. Here, "solar altitude" refers to the angle of the sun's position relative to the horizon. The "range of solar altitudes" acquired in step S14 is determined taking into consideration obstacles (things that prevent the photovoltaic power generation panel 1 from receiving sunlight) and the like around the panel-layable range A.

[0040] Next, in step S15, a range of the tilt angle of the solar panel 1 is acquired in which reflected light with an incident angle of 60° or more on the solar panel 1 does not reach (does not head toward) the anti-glare object C. The tilt direction of the solar panel 1 is set such that the solar panel 1 is positioned lower as it moves in the opposite direction to the anti-glare treatment orientation B (as it moves away from the anti-glare object C). Note that in Figures 6(a), 7(a), 8(a), 8(b), and 9, the direction of the arrow in the panel installation range A indicates that the tilt of the solar panel 1 is downward as it moves in the direction of the arrow.

[0041] The tilt angle of the solar panel 1 in the tilt direction is set to a tilt angle that satisfies either the following condition 1 or condition 2 when the solar altitude is at the upper limit angle or the lower limit angle of the range acquired in step S14.

[0042] <Condition 1> The incident angle α of the sunlight with respect to the photovoltaic panel 1 is less than 60°. <Condition 2> The reflection direction of sunlight with an incidence angle α of 60° or more is within the range of ±30° to the vertical direction.

[0043] The incidence angle α in condition 1 and the reflection direction in condition 2 are based on the side view of the panel-layable range A and the anti-glare object C (viewed from a direction perpendicular to the direction in which the anti-glare object C is located, with the panel-layable range A as the reference). For example, if the anti-glare object C is located north of the panel-layable range A, the incidence angle α in condition 1 and the reflection direction in condition 2 are based on the view from the west (or east).

[0044] When the tilt angle of the solar panel 1 satisfies the above condition 1 (the incident angle α of sunlight to the solar panel 1 is less than 60°), the amount of reflection (brightness) of the reflected light is relatively weak. Therefore, when the incident angle α is less than 60°, even if the reflected light reaches the anti-glare object C, it is unlikely to cause light pollution due to glare.

[0045] Furthermore, when the tilt angle of the solar panel 1 satisfies the condition 2, the reflected light is directed upward (close to the vertical direction) and is unlikely to reach the anti-glare object C. Therefore, light pollution due to glare is unlikely to occur at the anti-glare object C.

[0046] Fig. 6 shows an example of the tilt angle of the solar power generation panel 1 when there is an anti-glare object to the north of the panel installation range A. Fig. 6(b) shows the incident light and reflected light when the solar altitude is at the lowest angle, and Fig. 6(c) shows the incident light and reflected light when the solar altitude is at the highest angle. When the solar power generation panel 1 is installed horizontally, the incident angle α is maximum when the solar altitude is at the lowest angle, and minimum when the solar altitude is at the highest angle.

[0047] As shown in Figure 6(b), by setting the inclination direction of the solar power generation panel 1 so that the solar power generation panel 1 is positioned downward as it moves in the opposite direction to the anti-glare treatment direction B (as it moves away from the anti-glare object C), the reflection direction of the reflected light at the lowest angle of the solar altitude (when the incidence angle α is maximum) can be made closer to the vertical.

[0048] Next, when the incidence angle α (i.e., the maximum value of the incidence angle α) at ​​the lowest angle of the solar altitude is 60° or more, a range of the inclination angle θ° of the solar panel 1 with respect to the horizontal direction HL is calculated such that the angle β of the reflection direction of the reflected light with respect to the vertical direction VL at the maximum incidence angle α is within 30°.

[0049] As shown in Figure 6(c), when the solar altitude is at its upper limit angle, the incidence angle α is often less than 60°, so there is no need to particularly consider the reflection direction of the reflected light. However, by setting the tilt direction of the solar panel 1 in the above-mentioned direction, the reflection direction of the reflected light is often in the opposite direction to the anti-glare object C, so the reflected light will not reach the anti-glare object C.

[0050] Fig. 7 shows an example of the tilt angle of the solar power generation panel 1 when there is an anti-glare object to the east of the panel installation range A. Fig. 7(b) shows the incident light and reflected light when the solar altitude is at the lowest angle, and Fig. 7(c) shows the incident light and reflected light when the solar altitude is at the highest angle.

[0051] As in the example shown in Figure 6, as shown in Figure 7(b), by setting the inclination direction of the solar power generation panel 1 so that the solar power generation panel 1 is positioned downward as it moves in the opposite direction to the anti-glare treatment direction B (as it moves away from the anti-glare object C), the reflected light at the lowest angle of the solar altitude can be made closer to the vertical.

[0052] Next, when the incidence angle α (i.e., the maximum value of the incidence angle α) at ​​the lowest angle of the solar altitude is 60° or more, a range of the inclination angle θ° of the solar panel 1 with respect to the horizontal direction HL is calculated such that the angle β of the reflection direction of the reflected light with respect to the vertical direction VL at the maximum incidence angle α is within 30°.

[0053] As shown in Figure 7(c), when the sun's altitude is at its highest, the reflection direction of the reflected light is often in the opposite direction to the anti-glare object C, so the reflected light never reaches the anti-glare object C.

[0054] 8(a), when the anti-glare object C1 is located on the east side of the panel-laying possible range A and the anti-glare object C2 is located on the west side of the panel-laying possible range A (the anti-glare treatment orientations B1 and B2 are east and west), the panel-laying possible range A is divided into an eastern range a1 and a western range a2. In the eastern range a1 of the panel-laying possible range A, the inclination direction of the solar power generation panel 1 is such that the solar power generation panel 1 is positioned lower as it moves away from the anti-glare object C1. On the other hand, in the western range a2 of the panel-laying possible range A, the inclination direction of the solar power generation panel 1 is such that the solar power generation panel 1 is positioned lower as it moves away from the anti-glare object C2.

[0055] 8(b), when the anti-glare object C3 is located on the east side of the panel-laying possible range A and the anti-glare object C4 is located on the north side of the panel-laying possible range A (the anti-glare treatment orientations B3 and B4 are east and north), the panel-laying possible range A is divided into an eastern (southeast) range a3 and a northern (northwest) range a4. In the eastern range a3 of the panel-laying possible range A, the inclination direction of the solar power generation panel 1 is such that the solar power generation panel 1 is positioned lower as it moves away from the anti-glare object C3. On the other hand, in the northern range a4 of the panel-laying possible range A, the inclination direction of the solar power generation panel 1 is such that the solar power generation panel 1 is positioned lower as it moves away from the anti-glare object C4.

[0056] 9, when the anti-glare object C5 straddles adjacent areas (for example, the anti-glare treatment orientation B5 on the north side of the panel installation possible range A and the anti-glare treatment orientation B6 on the northeast side), the inclination direction of the photovoltaic power generation panel 1 can be set to one main direction. For example, the inclination direction of the photovoltaic power generation panel 1 may be determined based on the area (anti-glare treatment orientation B5) in which the anti-glare object C5 occupies a larger area among the areas (anti-glare treatment orientations B5 and B6) that the anti-glare object C5 straddles. Specifically, the inclination direction of the photovoltaic power generation panel 1 may be set to such that the photovoltaic power generation panel 1 is positioned lower in the direction opposite to the anti-glare treatment orientation B5 (northeast).

[0057] Condition 2 is not limited to the above. For example, the inclination angle θ of the solar power generation panel 1 may be set to such an angle that the reflected light of the sunlight with an incident angle α of 60° or more is not directed toward the anti-glare object C, taking into consideration the height of the anti-glare object C and the like.

[0058] Next, in step S16, the inclination angle θ of the solar power generation panel 1 at the time of installation is determined from the range of the inclination angle θ calculated in step S15. It is preferable that the inclination angle θ of the solar power generation panel 1 at the time of installation is set to the lower limit value of the range of the inclination angle θ calculated in step S15 in consideration of power generation efficiency. In the example shown in Fig. 6, the inclination angle θ is determined to be, for example, 20°. In the example shown in Fig. 7, the inclination angle θ is determined to be, for example, 30°.

[0059] As described above, the process from steps S11 to S16 can determine the tilt angle θ capable of suppressing light pollution around the solar power panel 1 (anti-glare target C). In the method according to this embodiment, light pollution around the solar power panel 1 can be suppressed by adjusting the tilt angle θ of the solar power panel 1, and no modification of the solar power panel 1 or additional members are required. This allows for a simple and low-cost anti-glare measure.

[0060] As described above, the method for determining the tilt angle of the solar panel 1 according to this embodiment is as follows: A method for determining a tilt angle θ of a solar panel 1 at the time of installation, comprising: A panel installation possible range setting step (step S11) for setting a panel installation possible range A (the installation possible range of the solar power generation panel 1); An anti-glare object setting step (step S12) for setting an anti-glare object C around the panel laying range A; An anti-glare treatment direction setting step (step S13) for setting an anti-glare treatment direction B based on the panel installation possible range A based on the position of the anti-glare object C; A tilt setting step (steps S15 and S16) of setting the tilt angle θ of the solar power generation panel 1 to an angle such that the solar power generation panel 1 is positioned downward as it moves in the opposite direction to the anti-glare treatment direction B; It is equipped with the following.

[0061] With this configuration, light pollution around the solar panel 1 can be suppressed in a simple manner.

[0062] In addition, in the tilt setting step, The inclination angle θ is set so that reflected light whose incident angle α with respect to the solar power generation panel 1 is equal to or greater than a predetermined threshold value (for example, 60°) is not directed toward the anti-glare object C.

[0063] With this configuration, it is possible to prevent high-luminance reflected light from reaching the anti-glare object C.

[0064] In addition, in the tilt setting step, The inclination angle θ is set so that reflected light whose incident angle α to the solar power panel 1 is equal to or greater than a predetermined threshold value (e.g., 60°) is reflected in a direction within a predetermined range based on the vertical direction (e.g., vertical ±30°).

[0065] With this configuration, it is possible to prevent high-luminance reflected light from reaching the anti-glare object C.

[0066] Further, in the anti-glare treatment direction setting step, The periphery of the panel laying area A is divided into a plurality of areas, When the anti-glare object C is located in two or more of the multiple regions, each of the directions toward the two or more regions is set as the anti-glare treatment direction B; In the tilt setting step, The panel installation range A is divided into a plurality of ranges based on the anti-glare treatment direction B, and the inclination direction of the photovoltaic power generation panel 1 can be set individually in each of the plurality of ranges.

[0067] With this configuration, even if the anti-glare object C is located in a plurality of directions, light pollution to the anti-glare object C can be suppressed.

[0068] In addition, in the tilt setting step, When the two or more areas in which the anti-glare objects are located are adjacent to each other, the inclination direction of the solar power generation panel 1 can be set to one main direction.

[0069] With such a configuration, the installation of the solar power generation panel 1 can be simplified.

[0070] Although the embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0071] For example, in this embodiment, in the tilt setting step (steps S15, S16), the tilt angle θ of the solar power generation panel 1 is set so that reflected light with an incident angle α of 60° or more on the solar power generation panel 1 is not directed toward the anti-glare object C (so that it is reflected in a direction within a predetermined range based on the vertical direction (for example, a range of ±30° in the vertical direction)), but the threshold value of the incident angle α is not limited to 60° and can be any value taking into account the brightness of the reflected light.

[0072] Furthermore, in this embodiment, in the anti-glare treatment orientation setting step (step S13), the periphery of the panel laying area A is divided into multiple areas by drawing 45° straight lines passing through the four corners of the panel laying area A, but the method of division is not limited to this, and for example, the periphery of the panel laying area A may be divided into multiple areas by drawing straight lines along the four sides of the panel laying area A. [Explanation of symbols]

[0073] 1. Solar panels θ Tilt angle α angle of incidence A Panel installation range B. Anti-glare treatment direction C Anti-glare object

Claims

1. A method for determining an inclination angle of a solar panel at the time of installation, comprising: a laying possible range setting step for setting a laying possible range of the solar power generation panel; an anti-glare object setting step for setting an anti-glare object around the installation possible range; an anti-glare treatment direction setting step for setting an anti-glare treatment direction based on the installation possible range on the basis of the position of the anti-glare object; a tilt setting step of setting a tilt angle of the solar power generation panel to an angle such that the solar power generation panel is positioned downward as it moves in a direction opposite to the anti-glare treatment direction; Equipped with How to determine the tilt angle of a solar panel.

2. In the tilt setting step, The inclination angle is set so that reflected light having an incident angle on the solar power generation panel equal to or greater than a predetermined threshold is not directed toward the anti-glare object. The method for determining the tilt angle of a solar power generation panel according to claim 1 .

3. In the tilt setting step, The inclination angle is set so that reflected light having an incident angle with respect to the solar power generation panel equal to or greater than a predetermined threshold is reflected in a direction within a predetermined range based on the vertical direction. The method for determining the tilt angle of a solar power generation panel according to claim 1 .

4. In the anti-glare treatment direction setting step, The periphery of the layable range is divided into a plurality of regions; When the anti-glare object is located in two or more of the plurality of regions, each orientation toward the two or more regions is set as the anti-glare treatment orientation; In the tilt setting step, The installation range is divided into a plurality of ranges based on the anti-glare treatment orientation, and the inclination direction of the solar power generation panel can be set individually in each of the plurality of ranges. The method for determining the tilt angle of a solar power generation panel according to claim 1 .

5. In the tilt setting step, When the two or more areas in which the anti-glare object is located are adjacent to each other, the inclination direction of the solar panel can be set to one main direction. The method for determining the tilt angle of a solar power generation panel according to claim 4.

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