JP4032620B2 - Solar power generation equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a photovoltaic power generation facility.
[0002]
[Prior art]
In conventional general photovoltaic power generation facilities, the solar cell module is a single-sided light receiving type, and the light receiving surface is facing south, and the amount of solar radiation received is maximized, so the latitude at the installation point is considered. Installed with an appropriate tilt angle.
[0003]
When installing a solar cell module on a pole-shaped structure, install it at a tip of the pole with a south-facing angle. However, due to problems such as wind pressure strength due to the structure of the pole and the solar cell module, install the solar cell module. Therefore, when the electric load is mounted on the pole-shaped workpiece, the load is also limited and its application is limited.
[0004]
In addition, when installed on the roof of a building or on the flat roof of an individual or apartment house with a flat roof structure, the solar cell module is a single-sided light receiving type, and it is common to install it on a dedicated stand with a south-facing inclination. It is.
[0005]
[Problems to be solved by the invention]
In the prior art, a solar cell module attached to a pole is limited to power generation with a small capacity of about several watts to several tens of watts because of structural limitations in terms of mechanical strength against wind pressure and the like. When a load device such as an industrial television camera or a display device for displaying remote information is installed on the pole, the device is limited to the solar cell power generation capacity, and the application range of the pole-shaped station is limited.
[0006]
When installed on the rooftop of a building or on a flat roof for a residential or collective housing, the building or house is not necessarily facing south, and if the installation area is relatively small, Installation capacity is greatly limited. Further, the installation base not only has a heavy building load in terms of weight, but also increases the cost.
[0007]
[Means for Solving the Problems]
In the photovoltaic power generation facility according to the present invention, the first means is to use a double-sided light-receiving module, and the second means is to vertically install the module. By the first and second means, the amount of power generated by the solar cell system becomes substantially constant without depending on the installation azimuth angle of the solar cell module. Furthermore, in order to flatten the output characteristics of the power generation system, a third means is to install a plurality of vertically installed double-sided light-receiving solar cell modules with azimuth angles dispersed.
[0008]
When the above-mentioned second means is applied to a pole installation type solar power generation facility, there is a possibility of receiving a larger wind pressure as compared with the prior art. In the photovoltaic power generation facility according to the present invention, as a measure against wind pressure, a fourth means is to disperse the influence of wind pressure by arranging a plurality of pairs of solar cell modules at different azimuth angles on one pole. And
[0009]
In the photovoltaic power generation facility according to the present invention, as another measure against wind pressure, a fifth means is to make the mounting structure of the module turnable in the axial direction of the pole. Further, the sixth means is to connect the pole structure, the swivel module, and the mounting structure thereof with a connecting member having a spring function so that the swirlable module balances with the wind pressure received. .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described. However, in order to describe a plurality of embodiments, first, common items which are means of the present invention will be described.
[0011]
FIG. 6 is an example of simulating the daily distribution of the amount of solar radiation when the light-receiving surface of the double-sided light-receiving solar cell module is in the east-west direction. As can be seen from this figure, (1) when the south surface is inclined at 30 °, the distribution is cosine-shaped with a peak around noon. On the other hand, in (4) east-west vertical plane total, compared to (1), more solar radiation is received from early morning to late evening, and there are two peaks around 10 am and 3 pm In addition, the integrated values of solar radiation are almost equal. This simulation is based in Mito City, Ibaraki Prefecture. Near the sea and in areas with a lot of snow, the ground reflection and scattered light increases, and the amount of solar radiation received on the vertical installation surface increases. .
[0012]
FIG. 7 shows an example in which the installation azimuth angle dependence of a vertically installed double-sided light-receiving solar cell module is simulated. In the figure, the output ratio indicates a value normalized with the maximum output when the azimuth angle is -90 ° to + 90 °. As can be seen from this figure, the vertically installed single-sided light receiving module has a characteristic that its electrical output is remarkably lowered when it deviates from an azimuth angle of 0 ° (true south). On the other hand, the double-sided light receiving module installed vertically has an excellent characteristic that the azimuth angle dependency is almost negligible.
[0013]
1 and 2 show one embodiment of the present invention. In FIG. 1, a double-sided light receiving solar cell module 4 includes a plurality of mounting brackets 5 attached to a pair of support structures fixed to a pole 1 in the horizontal direction, that is, an upper support structure 2 and a lower support structure 3. Installed vertically. The module pair at the top of pole 1 is mounted so that its light-receiving surface faces in the east-west direction. Downward is the southeast / northwest direction in the second stage, north-south direction in the third stage, and the fourth stage. Is attached in the northeast and southwest directions. FIG. 2 is a diagram for explaining the installation azimuth angles of the four pairs of solar cell modules described above, and shows the installation angles of the four pairs of double-sided light-receiving solar cell modules 4 with the pole 1 as the center.
[0014]
In addition, although the present Example demonstrated the example which set it as 4 pairs of solar cell modules, and the installation angle of each pair shifted 45 degrees sequentially from the upper direction, the number of solar cell modules, installation azimuth angles, and the order are as follows. There are various things.
[0015]
Another embodiment of the present invention will be described with reference to FIGS. The pair of double-sided light-receiving solar cell modules 4 is fixed to a rotation support structure 6 that can be swiveled around the pole 1 by a plurality of mounting brackets 5, and the rotation support structure 6 is fixed to the pole 1. The structure is supported by two upper and lower bearing mechanisms 7 and can be turned. The support rotating structure 6 to which the double-sided light receiving solar cell module 4 is attached has a hook 10 on the upper horizontal support structure material 8 and the lower horizontal support structure material 9 which are one of the components, and the pole side hook. 11 and a spring mechanism 14 (consisting of a connecting rod 12 and a spring / dashpot functional element 13). When the solar cell module receives wind pressure, the mechanism described above causes the solar cell module to rotate to an angle at which the wind pressure and stress due to spring elongation are balanced, and when the wind pressure is released, the solar cell module is restored to the initial angle. become. FIG. 4 is a diagram for explaining the rotation angle balance of the solar cell module, and is a plan view seen from above the pole. In the present embodiment, the double-sided light receiving solar cell module 4 has its light receiving surface in the east-west direction. Due to the wind pressure, the solar cell module 4 and the support rotating structure 6 rotate from the initial position to a position where the stress balances. As the rotation limit, a mechanical stopper 15 is attached to the pole 1 or the bearing mechanism 7.
[0016]
Next, another embodiment of the present invention will be described with reference to FIG. FIG. 5 shows an example in which the present invention is applied to a building roof. The fence-integrated solar cell module 17 is obtained by incorporating the double-sided light-receiving solar cell module 4 into a fence pole 19, a fence upper horizontal support member 20, and a fence lower horizontal support member 21. The fence-integrated solar cell module 17 is installed vertically over the entire periphery of the roof 22 of the building 16. In this installation, in the vicinity of the corner of the roof, a fence structure 18 that does not incorporate the solar cell module is combined in order to avoid the influence of the generated shadow. Note that the application of the present invention includes the case of installation on a flat ground.
[0017]
【The invention's effect】
According to the present invention, there is an effect that it is possible to provide a pole-structure-installed power generation facility that can install a large-capacity solar power generation facility as compared with the prior art at a lower cost. Furthermore, a flat daily power generation output distribution can be realized, and an optimum and rational system design including a storage battery, a converter, and a load can be provided as an independent power source.
[0018]
Advantageous Effects of Invention According to the present invention, there is an effect that it is possible to realize a solar power generation facility that can supply a generated power amount equal to or higher than that when applying the prior art to a rooftop of a building or a roof of a flat roof house at low cost. Furthermore, when the orientation of the building is deviated from the south, in the conventional method of installing the gantry with the slope facing south, the installable capacity is greatly reduced or the solar cell module is adapted to the building orientation. However, according to the present invention, there is almost no azimuth dependency, and it can be installed vertically along the roof periphery. Photovoltaic power generation that can produce a large amount of power generation regardless of its shape and orientation becomes possible.
[0019]
Further, according to the present invention, the solar cell module is integrated with the fence, and is vertically installed. Therefore, the heavy frame necessary for the prior art and its foundation can be omitted, and the fence integrated module is Since the position is on the periphery of the roof, that is, the pillars, walls, etc. of the building, the load is advantageous also on the building structure, and there is an effect that the weight can be reduced and the cost can be reduced. Furthermore, the fence-integrated double-sided light receiving module is not unidirectional, and at least its light receiving surface receives light from four directions such as north / south / east / west, so the output distribution is flat and good power generation characteristics are obtained. There is an effect that it is obtained.
[Brief description of the drawings]
FIG. 1 shows an embodiment in which the present invention is applied to a pole-shaped structure and a solar cell module is fixed.
FIG. 2 is a diagram for supplementarily explaining the embodiment of FIG. 1;
FIG. 3 shows an embodiment in which the present invention is applied to a pole-shaped structure and the solar cell module is rotatable.
4 is a diagram for supplementarily explaining the embodiment of FIG. 3; FIG.
FIG. 5 is a diagram for explaining an embodiment in which the present invention is applied to solar power generation installed on a building rooftop.
FIG. 6 is a diagram showing an example of a simulation result when a light-receiving surface of a vertically installed double-sided light-receiving solar cell module is an east-west surface.
FIG. 7 is a diagram showing an example of a simulation result of azimuth angle dependency of a vertically installed double-sided light-receiving solar cell module.
FIG. 8 is a diagram showing an example of a simulation result showing the principle of flattening the power generation output of the solar power generation facility.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Pole-like structure, 2 ... Upper support structure, 3 ... Lower support structure, 4 ... Double-sided light reception type solar cell module, 5 ... Mounting bracket, 6 ... Support rotating structure, 7 ... Bearing mechanism, 8 ... Upper part Horizontal support structure, 9 ... lower horizontal support structure, 10 ... hook, 11 ... pole side hook, 12 ... connecting rod, 13 ... spring / dashpot functional element,
DESCRIPTION OF SYMBOLS 14 ... Spring mechanism, 15 ... Mechanical stopper, 16 ... Building, 17 ... Fence integrated solar cell module, 18 ... Fence structure, 19 ... Fence pole, 20 ... Fence upper support material, 21 ... Fence lower support material 22 ... Building roof.

Claims (2)

  The pole-shaped structure has a double-sided light-receiving solar cell module that can pivot about the pole-shaped structure. The pole-shaped structure is connected by a member having a spring function, and has a wind pressure and a spring function received by the solar cell module. A photovoltaic power generation facility having a mechanism that turns to an angle that balances the elongation stress of the member. A fence-integrated solar cell module in which a double-sided solar cell module is incorporated into a fence pole, an upper horizontal support member for a fence, and a lower horizontal support portion for a fence , A photovoltaic power generation facility that is vertically installed so that the light receiving surface receives light from four directions, such as north-south and east-west , in combination with a fence structure that does not incorporate a solar cell module .

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