WO2023085495A1

WO2023085495A1 - Floating photovoltaic structure for installation in low-latitude country

Info

Publication number: WO2023085495A1
Application number: PCT/KR2021/017953
Authority: WO
Inventors: 전석희; 정우영; 조철호
Original assignee: 현대글로벌(주)
Priority date: 2021-11-12
Filing date: 2021-12-01
Publication date: 2023-05-19
Also published as: KR20230069740A

Abstract

The present invention provides a floating photovoltaic structure for installation in a low-latitude country that is installed in a low-latitude country with a large solar incident angle, has excellent power generation efficiency, can improve safety by reducing wind direction resistance, and facilitates the installation of a photovoltaic module. A floating photovoltaic structure for installation in a low-latitude country having a photovoltaic module, according to a preferred embodiment of the present invention, comprises: support columns arranged in pairs at regular intervals side by side along the long side arrangement direction of a photovoltaic module; buoyant bodies connected to lower portions of the support columns to provide buoyancy to the floating photovoltaic structure; upper support members for the photovoltaic module positioned at upper portions of the support columns and disposed at regular intervals along the longitudinal direction to support the upper portion of the photovoltaic module; lower support members for the photovoltaic module disposed on both sides of the upper support members for the photovoltaic module and supported and fixed to the upper surfaces of the support columns, wherein the photovoltaic module is installed with the short side thereof inclined, the upper end of which is fixed to the upper support members of the photovoltaic module and the lower end of which is fixed to the lower support members of the photovoltaic module such that the photovoltaic module is installed in a ∧-shaped gable structure with the longitudinal direction of the upper support members of the photovoltaic module as the axis of symmetry.

Description

Floating photovoltaic structure for installation in low-latitude countries

The present invention relates to a floating photovoltaic structure capable of generating power through a photovoltaic module installed on a water surface. In particular, it is installed in a low-latitude country where the angle of incidence of sunlight is large, so that the power generation efficiency is excellent and the wind direction resistance is reduced to improve safety. It relates to a floating photovoltaic structure for installation in a low-latitude country that can be improved and makes it easy to install a photovoltaic module.

The floating photovoltaic power generation market is already offshore/floating solar power, and large-scale development projects are underway in Korea, and efforts to utilize idle water surface are continuing in low-latitude countries such as Southeast Asia. Domestic floating solar power generation is installed indiscriminately by the owner because there is no installation standard, so there is a lot of room for improvement in terms of safety. Technical supplementation is urgently needed in terms of environmental conditions and long-term durability on the sea/water, and it is necessary to develop technology to apply to low-latitude countries with different installation conditions from domestic ones. Low-latitude countries have a larger solar incidence angle than Korea, so the installation angle of the solar module is relatively reduced, so that material savings and power generation complex size reduction are possible, resulting in greater economic savings. Therefore, when installed in low-latitude countries, a plan to minimize the load by reducing the installation angle of the photovoltaic module is required.

As a background technology of the present invention, Korean Registered Patent Registration No. 10-1844040 (Patent Document 1), a 'floating photovoltaic device' has been proposed. In the background art, it is possible to stably support upper structures and secure sufficient buoyancy by fixing a drum-type floating body to a support body by a fixed clamp and connecting other drum-shaped floating bodies. However, the above background art has a problem in that all the solar light collecting modules are equally inclined in one direction, so that the load of the solar light collecting module is increased when the wind blows, thereby compromising the safety of the structure.

As another technology that is the background of the present invention, Korean Registered Patent Registration No. 10-1946212 (Patent Document 2), a 'floating photovoltaic device' has been proposed. This has a structure in which the photovoltaic device is firmly supported on the water to generate power, and at the same time, the propeller moves the photovoltaic device to change the position of the photovoltaic device, and the location of the photovoltaic device and the sun It is configured to absorb the most amount of light by matching the moving direction of the However, the background art also has a problem in that the load of the solar panel is increased when the solar panel is hit by wind because the solar panel is installed equally inclined in only one direction, thereby compromising the safety of the structure.

The present invention provides a floating photovoltaic structure for installation in a low-latitude country that is installed in a low-latitude country with a large solar incident angle, has excellent power generation efficiency, can improve safety by reducing wind direction resistance, and makes it easy to install a solar module. has its purpose.

Floating photovoltaic structure for low-latitude country installation having a photovoltaic module according to a preferred embodiment of the present invention includes a support column arranged in a pair side by side at regular intervals along the long side arrangement direction of the photovoltaic module; A buoyancy body connected to the lower part of the support column to generate buoyancy to the floating photovoltaic structure; a photovoltaic module upper support member positioned on the top of the support column and disposed at regular intervals along the longitudinal direction to support the upper portion of the photovoltaic module; A solar module lower support member disposed on both sides of the solar module upper support member and supported and fixed to the upper surface of the support column, wherein the solar module is installed with a short side inclined, the upper end of which is the solar module upper support At the same time as being fixed to the member, its lower end is fixed to the lower support member of the photovoltaic module, characterized in that it is installed in a ∧-shaped gable structure with the longitudinal direction of the upper support member of the photovoltaic module as an axis of symmetry.

In addition, when the size of the photovoltaic module increases or the installation angle of the photovoltaic module increases and the height of the upper support member of the photovoltaic module increases, the height of the upper support member of the photovoltaic module is reduced to secure the safety of the structure. It is characterized in that the vertical reinforcing member is further installed.

In addition, the photovoltaic module upper supporting member is characterized in that it consists of a lower horizontal flange, a vertical web installed on the lower horizontal flange, and an upper inclined flange bent in a V shape by an inclined gable angle at the upper end of the vertical web. .

In addition, the lower supporting member of the solar module is bent at the L-shaped standing part, the lower inclined supporting jaw that is bent at the upper end of the L-shaped standing part to support the lower surface of the solar module, and the lower inclined supporting member is bent and installed on the lower side of the solar module. It is characterized in that it has a side vertical support jaw for supporting.

In addition, a nut concave groove is further formed in the upper part of the photovoltaic module upper support member in the longitudinal direction, a photovoltaic module connecting clamp is disposed in the long side direction of the upper side of the photovoltaic module, and a fastening bolt is inserted into the photovoltaic module connecting clamp. It is fastened to the fastening nut inserted into the nut concave groove, characterized in that the photovoltaic module connection clamp clamps two photovoltaic modules at once from the upper center.

In addition, a corner fixing clamp is installed at the upper corner of the photovoltaic module to fix four photovoltaic modules at once; Corner fixing clamps are formed on both sides of the U-shaped cross-section short-side spacing maintenance channel that maintains the short-side installation distance between adjacent photovoltaic modules and the long-side installation distance between adjacent photovoltaic modules on the long side. It is characterized in that it includes a plate-shaped module pressing part formed on the upper four places of the gap maintaining jaw and the short side gap maintaining channel.

In addition, the lower end of the photovoltaic module is characterized in that it is fixed to the lower support member of the photovoltaic module through a fixing clip.

In addition, the buoyancy body is characterized in that it is made of EPP (Expanded Polypropylene) material in a solid form having a double density.

According to the floating photovoltaic structure for installation in a low-latitude country of the present invention, the photovoltaic module is installed in a low-latitude country with a large angle of incidence of sunlight as the photovoltaic module is arranged face-to-face by the gable structure, and the power generation efficiency is excellent, as well as the front and back of the floating photovoltaic structure. The blowing wind flows naturally without being stagnant, further improving the safety of the floating photovoltaic structure regardless of the wind direction. In addition, the installation work of the photovoltaic module can be performed more conveniently by using the photovoltaic module connecting clamp and the corner fixing clamp.

The following drawings attached to this specification illustrate a preferred embodiment of the present invention, and together with the detailed description of the present invention serve to further understand the technical idea of the present invention, the present invention is limited to those described in the accompanying drawings. It should not be construed as limiting.

1 is a perspective view of a floating photovoltaic structure for low-latitude country installation according to an embodiment of the present invention.

Figure 2 is a side view of Figure 1;

Figure 3a is a perspective view of a solar module connection clamp applied to the present invention.

Figure 3b is a perspective view of a corner fixing clamp applied to the present invention.

Figure 4 is a perspective view of a floating photovoltaic structure for low latitude country installation according to another embodiment of the present invention.

5 is a side view and an enlarged view of a main part of FIG. 1;

Figure 6 is a cross-sectional view of one form of the photovoltaic module upper support member applied to the present invention.

7 is a state diagram in which the photovoltaic module is removed from FIG. 4;

8 is an installation state diagram of a corner fixing clamp applied to the present invention.

Below, the present invention will be described in detail with reference to the embodiments presented in the accompanying drawings, but the presented embodiments are illustrative for a clear understanding of the present invention, and the present invention is not limited thereto.

As shown in FIG. 1, the present invention provides a floating photovoltaic structure 10 for installing a low-latitude country having a photovoltaic module 12. The photovoltaic module 12 is composed of a single power generation module by arranging several solar cells to generate appropriate voltage and current from sunlight.

As shown in FIGS. 1 and 2, the floating photovoltaic structure 10 includes

support columns

14 and 14a arranged in pairs at regular intervals along the long side arrangement direction of the photovoltaic module 12, and support columns ( A plurality of buoyancy bodies 16 connected to the lower portion of 14 and 14a) to generate buoyancy in the floating photovoltaic structure 10, and a plurality of buoyancy bodies 16 located on top of the

support columns

14 and 14a and constant along the longitudinal direction The photovoltaic module upper support member 18 disposed at intervals to support the upper portion of the photovoltaic module 12 and the upper photovoltaic module upper support member 18 disposed on both sides of the

support columns

14 and 14a on the upper surface It includes a support fixed solar module lower support member 22.

The photovoltaic module 12 is preferably arranged with its short side (horizontal direction) inclined. As such, the photovoltaic module 12 lowers the height of the photovoltaic module 12 subjected to wind load compared to the long side (vertical direction) arrangement by arranging the short side inclined, thereby reducing the design wind load applied to the floating photovoltaic structure 10 It works.

Support columns

14 and 14a are manufactured and installed with H-shaped steel in this embodiment. The buoyancy body 16 is a solid form having a double density and is made of EPP (Expanded Polypropylene) material.

As shown in FIGS. 2 and 6, the photovoltaic module upper support member 18 has a lower horizontal flange 181, a vertical web 182 installed on the lower horizontal flange 181, and an inclined foil on top of the vertical web 182. It consists of an upper inclined flange 183 bent in a ∧ shape by a hole angle θ. Therefore, the upper end of the photovoltaic module 12 is fixed to the upper photovoltaic module supporting member 18 and the lower end thereof is fixed to the lower photovoltaic module supporting member 22, so that the upper photovoltaic module supporting member 18 It is installed in a ∧-shaped gable structure with the longitudinal direction as the axis of symmetry. As such, in the floating photovoltaic structure 10, the photovoltaic module 12 is arranged oppositely by the ∧-shaped gable structure, so that the wind blowing from the front and rear of the floating photovoltaic structure 10 does not stagnate and flows naturally to the wind direction. Regardless, the safety of the floating photovoltaic structure 10 can be further improved.

As shown in FIG. 5, the lower supporting member 22 of the photovoltaic module is the upper end of the L-shaped standing part 221 and the L-shaped standing part 221 in order to maintain the installation angle of the photovoltaic module 12 and to conveniently assemble it. The lower inclined support jaw 222 bent to support the lower lower surface of the photovoltaic module 12, the side vertical support jaw 222 bent from the lower inclined support jaw 222 to support the lower side of the solar module 12 (223).

On the other hand, as shown in FIGS. 4, 5 and 7, when the size of the photovoltaic module 12 increases or the installation angle of the photovoltaic module 12 increases so that the height of the photovoltaic module upper support member 18 increases, the solar light In order to secure the safety of the structure by reducing the height of the module upper support member 18, it is preferable that a separate vertical reinforcing member 20 is further installed on the

support columns

14 and 14a.

On the other hand, in the present invention, as shown in FIG. 5, a nut concave groove 184 is further formed in the longitudinal direction on the top of the upper photovoltaic module supporting member 18, and the photovoltaic module is formed in the long side direction of the upper side of the photovoltaic module 12. A connecting clamp 30 is disposed. The photovoltaic module connecting clamp 30 is provided with long side pressing parts 301 on both sides of the top so as to press the upper surface of the long side side of the photovoltaic module 12 . At this time, the fastening bolt 32 is inserted into the solar module connecting clamp 30 and fastened to the fastening nut 34 inserted into the nut concave groove 184 so that the solar module connecting clamp 30 is connected to the solar module 12 Two can be clamped at once from the top center. In this case, since the solar module connection clamp 30 can be freely moved and the solar module connection clamp 30 can be installed in advance, the fixing work time of the solar module 12 can be shortened. In addition, hole processing for fixing the photovoltaic module connection clamp 30 is not required, and when tightening the fastening bolt 32, the bolt can be tightened without fixing the fastening nut 34, so that workability is improved.

Furthermore, in the present invention, as shown in FIGS. 3B and 4 , four photovoltaic modules 12 may be fixed at once by installing corner fixing clamps 40 on the upper corners of the photovoltaic modules 12 . The corner fixing clamp 40 is formed on both sides of the short side spacing maintaining channel 401 and the short side spacing maintaining channel 401 of the U-shaped cross section for maintaining the short side installation distance between the adjacent

photovoltaic modules

12 and 12, The

long side spacer

402 and 402 that maintains the long side installation distance between adjacent

photovoltaic modules

12 and 12 are formed on four upper parts of the short side distance maintaining channel 401 and are formed on the upper edge of the corner of the photovoltaic module 12, respectively. It includes a plate-shaped module pressing portion 403 seated on the.

Therefore, as shown in FIG. 8, after inserting the fastening nut 34 into the nut concave groove 184 of the photovoltaic module upper support member 18, the fastening bolt 32 is screwed into the fastening nut 34 to fix the corner A clamp 40 may be installed. Therefore, the four module pressing parts 403 of the corner fixing clamp 40 press the upper surfaces of each corner of the four photovoltaic modules 12 to easily fix and connect the four photovoltaic modules 12 at a time. .

The lower end of the photovoltaic module 12 may be fixed to the lower support member 22 of the photovoltaic module through the fixing clip 130 as shown in FIG. 4 . The fixing clip 130 is fastened to the lower photovoltaic module supporting member 22 through bolts and nuts to fix the lower end of the photovoltaic module 12 to the lower photovoltaic module supporting member 22 .

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art can make various modifications and variations without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The present invention is not limited by these variations and modifications, but is limited only by the claims appended below.

The floating photovoltaic structure for installation in a low-latitude country of the present invention is installed in a low-latitude country with a large solar incident angle as the solar modules are arranged face to face by a gable structure, and not only has excellent power generation efficiency, but also blows from the front and back of the floating photovoltaic structure. The wind flows naturally without being stagnant, further improving the safety of floating photovoltaic structures regardless of the wind direction, and using solar module connection clamps and corner fixing clamps to make the installation of solar modules easier. It is an invention that

Claims

In the floating photovoltaic structure 10 for low-latitude country installation having a photovoltaic module 12,

Support columns (14, 14a) disposed side by side in pairs at regular intervals along the long side disposition direction of the photovoltaic module (12);

A buoyancy body 16 connected to the lower portion of the support columns 14 and 14a to generate buoyancy in the floating photovoltaic structure 10;

a photovoltaic module upper support member 18 located on the top of the support columns 14 and 14a and disposed at regular intervals along the longitudinal direction to support the upper portion of the photovoltaic module 12;

Including; a lower photovoltaic module supporting member 22 disposed on both sides of the upper photovoltaic module supporting member 18 and supported and fixed to the upper surface of the supporting columns 14 and 14a,

The photovoltaic module 12 is installed with an inclined short side, and its upper end is fixed to the upper photovoltaic module supporting member 18 and the lower end is fixed to the lower photovoltaic module supporting member 22 at the same time as the photovoltaic module A floating photovoltaic structure for low-latitude country installation, characterized in that it is installed in a ∧-shaped gable structure with the longitudinal direction of the upper support member 18 as an axis of symmetry.
According to claim 1,

When the size of the photovoltaic module 12 increases or the installation angle of the photovoltaic module 12 increases so that the height of the upper support member 18 of the photovoltaic module increases, the height of the upper support member 18 of the photovoltaic module is reduced to reduce the structure Floating photovoltaic structure for low-latitude country installation, characterized in that a separate vertical reinforcing member (20) is further installed on the support column (14, 14a) to ensure the safety of.
According to claim 1,

The photovoltaic module upper support member 18 is formed by a lower horizontal flange 181, a vertical web 182 installed on the lower horizontal flange 181, and an inclined gable angle θ at the top of the vertical web 182. Floating photovoltaic structure for low-latitude country installation, characterized in that consisting of an upper inclined flange 183 bent in a ∧ shape.
According to claim 1,

The photovoltaic module lower support member 22 includes an L-shaped standing portion 221, a lower inclined support jaw 222 that is bent at the upper end of the L-shaped standing portion 221 to support the lower surface of the photovoltaic module 12, Water photovoltaic structure for low-latitude country installation, characterized in that it has a side vertical support jaw 223 for supporting the lower side of the solar module 12 by being bent from the lower inclined support jaw 222.
According to claim 1,

A nut concave groove 184 is further formed in the longitudinal direction on the upper portion of the photovoltaic module upper support member 18, and a photovoltaic module connection clamp 30 is disposed in the long side direction of the upper side of the photovoltaic module 12, The fastening bolt 32 is inserted into the solar module connecting clamp 30 and fastened to the fastening nut 34 inserted into the nut concave groove 184 so that the solar module connecting clamp 30 is the solar module 12 2 A floating photovoltaic structure for low-latitude national installation, characterized in that the dog is clamped at one time in the upper middle.
According to claim 1,

An upper corner of the photovoltaic module 12 is provided with a corner fixing clamp 40 capable of fixing four photovoltaic modules 12 at a time;

The corner fixing clamp 40 is formed on both sides of the short side spacing maintaining channel 401 and the short side spacing maintaining channel 401 of the U-shaped cross section for maintaining the short side installation distance between the adjacent photovoltaic modules 12 and 12, It includes a long side distance maintaining step (402,402) for maintaining the long side installation distance between adjacent photovoltaic modules (12 and 12) and a plate-shaped module pressing part 403 formed at four upper portions of the short side distance maintaining channel 401, Floating photovoltaic structure for low-latitude country installation, characterized in that there is.
According to claim 1,

The lower end of the photovoltaic module 12 is fixed to the lower photovoltaic module supporting member 22 through the fixing clip 130. A floating photovoltaic structure for low-latitude country installation.
According to claim 1,

The buoyancy body 16 is a solid form having a double density and is a floating photovoltaic structure for low-latitude country installation, characterized in that made of EPP (Expanded Polypropylene) material.