JP2002076415A - Photovoltaic power generating installation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relieve restriction on installation, reduce the cost and improve power generating characteristic of a solar battery module installed on a pole- shaped construction, the housetop of a building, etc. SOLUTION: Both sides light receiving solar battery modules 4 are installed perpendicularly. A several steps of the solar battery modules 4 are arranged in the height direction of a pole 1, and the respective azimuth angles are dispersed. Thereby restriction on installation of the solar battery modules are relieved, and power generator installation of large capacity can be realized at a low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a photovoltaic power generation facility.

[0002]

2. Description of the Related Art In a conventional general photovoltaic power generation system, a solar cell module is a single-sided light-receiving type, and its light-receiving surface faces south to maximize the annual amount of received solar radiation. It is installed with an appropriate inclination angle in consideration of latitude.

[0003] When a solar cell module is installed on a pole-shaped structure, the solar cell module is installed with a south-facing inclination angle at the tip of the pole or the like. Since the area of the solar cell module is limited, the amount of generated power is also limited, and when an electric load is mounted on a pole-shaped workpiece, the load is also limited, and its application is limited.

When the solar cell module is installed on the roof of a building or on a flat roof of a private house or apartment house having a flat roof structure, the solar cell module is a single-sided light-receiving type, and is installed on a dedicated pedestal so as to be inclined southward. Is common.

[0005]

In the prior art,
The solar cell module attached to the pole has a structural limitation in terms of mechanical strength against wind pressure and the like, and is therefore limited to power generation with a small capacity of about several W to several tens of W.
When a load device such as an industrial television camera and a display device for displaying remote information is installed on the pole, the load device is limited to the solar cell power generation capacity, and the application range of the pole station is limited.

[0006] When the building or the house is installed on the roof of a building or a flat roof for a house or an apartment house, the building or the house is not always facing south. , Its installation capacity is greatly limited.
Further, the mounting base not only causes a large building load in terms of weight, but also increases the cost.

[0007]

In the photovoltaic power generation system 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 means and the second means, the amount of power generated by the solar cell system is substantially constant without depending on the installation azimuth 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] In a pole-mounted solar power generation facility,
When the above-mentioned second means is applied, there is a possibility that a greater wind pressure will be applied 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 dispose a plurality of pairs of solar cell modules on one pole at different azimuth angles to disperse the influence of wind pressure. And

In the solar power generation facility according to the present invention,
As another measure against wind pressure, a fifth means is to provide a structure in which the mounting structure of the module can be turned in the axial direction of the pole. A sixth means is to connect the pole structure, the swivel module and its mounting structure with a connection member having a spring function so that the swivel module is stationary in balance with the received wind pressure. .

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described. In order to explain a plurality of embodiments, first, common matters serving as means of the present invention will be described.

FIG. 6 shows an example of a simulation of the daily distribution of the annual solar radiation when the light receiving surface of the double-sided light receiving type solar cell module is set to the east-west direction. As can be seen from the figure, in the case of setting the southern surface inclination angle at 30 °, the distribution has a cosine shape with a peak near noon. On the other hand, the total of the east-west vertical plane receives more solar radiation from early morning to late evening, and has a distribution having two peaks at around 10 am and 3 pm, and The integral values are almost equal. The simulation is based on Mito City, Ibaraki Prefecture. At places near the sea and in areas with heavy snowfall, ground reflection and scattered light increase, and the amount of received solar radiation on the vertical installation surface increases. .

FIG. 7 shows an example of simulating the installation azimuth dependence of a vertically installed double-sided light receiving solar cell module. In the figure, the output ratio is azimuth-
It shows a value normalized by the maximum output when swinging from 90 ° to + 90 °. As can be seen from this figure, the vertically installed single-sided light-receiving module has the characteristic that its electric output is significantly reduced when the azimuth deviates from 0 ° (true south). On the other hand, the vertically mounted double-sided light receiving module has an excellent characteristic that the azimuth angle dependency is almost negligible.

FIGS. 1 and 2 show one embodiment of the present invention. In FIG. 1, a two-sided light receiving solar cell module 4 is attached to a pair of support structures fixed horizontally to a pole 1, that is, an upper support structure 2 and a lower support structure 3 by a plurality of mounting brackets 5. Mounted vertically. The module pair at the top of the pole 1 is mounted so that its light receiving surface faces east-west, and downward, the second row is southeast / northwest, the third row is north / south,
The fourth row is attached to the northeast and southwest directions. FIG.
FIG. 4 is a diagram for explaining the installation azimuth angles of the above-mentioned four pairs of solar cell modules, and shows the installation angles of the four pairs of double-sided light receiving solar cell modules 4 around the pole 1.

In this embodiment, four pairs of solar cell modules are used, and the installation angle of each pair is 45 ° sequentially from above.
Although the shifted example has been described, the number of solar cell modules, the installation azimuth angles, and the order thereof may be various.

Another embodiment of the present invention will be described with reference to FIGS. A pair of double-sided light receiving solar cell modules 4
Is fixed by a plurality of mounting brackets 5 to a rotation support structure 6 that can turn around the pole 1, and the rotation support structure 6 is supported by two upper and lower bearing mechanisms 7 fixed to the pole 1. , And can be turned. The supporting rotary structure 6 to which the double-sided light receiving type solar cell module 4 is attached includes an upper horizontal supporting structure material 8 which is one of the constituent elements.
The lower horizontal support structure 9 has a hook 10 and is connected to the pole side hook 11 by a spring mechanism 14 (composed of a connecting rod 12 and a spring / dashpot functional element 13). When the solar cell module receives the wind pressure, the mechanism described above causes the solar cell module to rotate to an angle at which the stress due to the wind pressure and the spring expansion is balanced, and to restore the initial angle when the wind pressure is released. 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 light receiving surface of the double-sided light receiving solar cell module 4 is set to the east-west direction. By wind pressure
The solar cell module 4 and the supporting rotating structure 6 rotate from an initial position to a position where the stress is balanced. As this rotation limit, a mechanical stopper 15 is attached to the pole 1 or the bearing mechanism 7.

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
Fence pole 19 and fence upper horizontal support 20
In addition, the double-sided light receiving solar cell module 4 is incorporated in the lower horizontal support member 21 for fence. The fence-integrated solar cell module 17 is installed vertically over the entire periphery of the rooftop 22 of the building 16. In this installation, a fence structure 18 without a solar cell module is combined in the vicinity of the rooftop corner in order to avoid the influence of the generated shadow. In addition, the application of the present invention includes the case where it is installed on flat ground.

[0017]

According to the present invention, there is an effect that it is possible to provide a pole-type structure-installed type power generation facility capable of installing a large-capacity photovoltaic power generation facility at a lower cost than in the prior art. Further, it is possible to realize a flat daily power generation output distribution and to provide an optimal and rational system design including a storage battery, a converter, and a load as an independent power source.

According to the present invention, there is an effect that a photovoltaic power generation facility capable of supplying a power generation amount equal to or greater than that of the prior art to the roof of a building or the roof of a flat roof house can be realized at low cost. Furthermore, in the case where the orientation of the building is shifted from the south, in the conventional method of mounting the pedestal with a southward inclination, the installable capacity is significantly reduced,
In accordance with the building orientation, the solar cell module will be installed, which causes a decrease in the amount of generated power, but according to the present invention, there is almost no azimuth dependence, and it can be installed vertically along the rooftop periphery, As long as there is only the total length around the building, it is possible to generate a large amount of power regardless of its shape and orientation.

Further, according to the present invention, since the solar cell module is integrated with the fence and is installed vertically,
The heavy frame and its base required in the prior art can be omitted, and the fence-integrated module is located at the periphery of the roof, that is, at the position of columns, walls, etc. of the building, so that the load load is advantageous in the structure of the building. Thus, there is an effect that the weight can be reduced and the cost can be reduced. In addition, the fence-integrated double-sided light receiving module is designed to receive light from at least four directions, such as north, south, east, and west, rather than in one direction. There is an effect that it can be 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 supplementarily explaining the embodiment of FIG.

FIG. 3 shows an embodiment in which the present invention is applied to a pole-shaped structure and a solar cell module is rotatable.

FIG. 4 is a diagram supplementarily explaining the embodiment of FIG. 3;

FIG. 5 is a diagram illustrating an embodiment in which the present invention is applied to photovoltaic power generation installed on a building rooftop.

FIG. 6 is a diagram showing an example of a simulation result when the light receiving surface of the vertically installed double-sided light receiving solar cell module is the east-west surface.

FIG. 7 is a diagram showing an example of a simulation result of the azimuth angle dependence 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 a solar power generation facility.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pole-shaped structure, 2 ... Upper support structure, 3 ... Lower support structure, 4 ... Double-sided light receiving solar cell module, 5 ... Mounting bracket, 6 ... Support rotary structure, 7 ... Bearing mechanism, 8 ... Upper part Horizontal support structure material, 9: Lower horizontal support structure material, 10: Hook, 11: Pole side hook, 12: Connecting rod, 13: Spring / dashpot functional element, 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 rooftop.

Claims (5)

[Claims] 1. A photovoltaic power generation system in which a plurality of double-sided photovoltaic modules are installed vertically on a pole-like structure with their azimuths distributed uniformly in the height direction. 2. The pole structure according to claim 1, wherein the pole structure has a pair of upper and lower horizontal support structures, and the support structure has a pair of double-sided light receiving solar cell modules on both sides of the pole structure. A photovoltaic power generation facility comprising four sets of solar cell arrays each having a vertically mounted structure in a north-south direction, an east-west direction, a south-east / north-west direction, and a south-west / northeast direction. 3. A photovoltaic power generation facility having a pole-like structure having a structure that can be pivoted about the pole, and a double-sided light receiving type solar cell module vertically mounted on the structure. 4. The structure according to claim 3, wherein the structure having the pivotable double-sided light receiving solar cell module and the pole-shaped structure are connected by a member having a spring function, and have a wind pressure received by the solar cell module and a spring function. Photovoltaic power generation equipment having a mechanism for turning to an angle at which the elongation stress of the member is balanced. 5. A double-sided photoreceptor solar cell module is integrated with a work such as a fence, and is mounted on a roof of a building, a flat roof house, or the like, regardless of the orientation of the building, on a peripheral portion of the building roof.
Photovoltaic power generation facilities installed vertically in general throughout.