KR102463767B1 - Floating solar power generation system that reduces wind load - Google Patents

Abstract

The present invention relates to a floating solar power generation system with reduced wind load, comprising: a solar power generation unit in which solar cell module units are connected via hinges to be parallelly formed and disposed in a longitudinal direction and a traverse direction wherein the solar cell module unit is composed of a floating structure floating on a water surface and a plurality of solar cell modules formed on the floating structure; a mooring device for limiting the movement of the solar power generation unit; and an electric equipment unit installed on the land or on the sea to transmit electricity generated by the solar cell module unit, wherein a plurality of mooring lines of the mooring device are connected to the floating structure of the solar cell module located at the inner side in a center direction so that at least one solar cell module located on the outermost side of the solar power generation unit is not constrained. Stability of a solar power generation facility can be enhanced.

Description

Floating solar power generation system that reduces wind load}

The present invention relates to a floating photovoltaic power generation system, and more particularly, to a wind load reducing floating photovoltaic power generation system capable of securing safety by preventing a power plant from collapsing due to wind load.

Recently, as interest in energy business using new and renewable energy resources increases, interest in solar power generation, an eco-friendly energy resource, is steadily increasing.

Photovoltaic power generation is a power generation method that directly converts sunlight into electric energy using solar cells.

For such photovoltaic power generation, it is necessary to secure a land with a large area and a constant amount of sunlight to install a large amount of photovoltaic panels. However, in reality, it is difficult to realize this in limited land resources, so many technologies for floating photovoltaic power generation that can be installed in reservoirs or lakes are being developed.

As a related art, a technology for a frame support structure in which a floating body is coupled to the lower part of a frame, which is a rigid structure, and a photovoltaic panel is coupled to the upper part of the frame has been developed (Patent No. 10-1843354).

In the frame support structure, since the entire photovoltaic structure constitutes a single rigid structure, it is disadvantageous for wave load.

And since the frame structure has to resist the wave load, the rigidity of the frame must be increased. Accordingly, the details of the frame structure are complicated and the amount of material is large, which is uneconomical.

In addition, since a footrest for maintenance must be separately installed on the upper part of the frame, the weight of the entire structure is increased and the cost is inevitably increased.

In addition, there is a limitation in the size of the production unit due to excessive bending load acting on the frame during the extruding operation produced by the waterside, and thus there is a problem in that the installation ship must be operated frequently.

In order to solve this problem, a technology for an individual hinge structure in which a solar panel is integrated into a floating body has been developed (Patent Publication No. 10-2018-0040403).

The above technology requires the use of a plastic floating body, and the floating body is deformed or damaged by ultraviolet rays, temperature changes, external impact, etc. over time, thereby causing aquatic environmental pollution due to the generation of microplastics.

In addition, since each floating body is hinged in all directions, it is easy to break the connection part due to large distortion on the plane, and it is difficult to design a mooring. In addition, since such an individual hinge structure is vulnerable to wind pressure, the inclination angle of the solar panel cannot be increased, thereby limiting power generation efficiency.

In addition, the integrated structure of such a floating body has a problem in that the load is transmitted overlapping the structure by the wind load or wave load, and the load is excessively transmitted to the mooring line, resulting in poor structural stability.

The object of the present invention to solve the above-described problem is as follows.

First, an object of the present invention is to provide a wind load reduction floating photovoltaic power generation system that can secure safety by preventing the collapse of the power plant due to the overlapping load of the photovoltaic power generation facility structure generated by wind load or wave load.

Second, the task of the present invention is to reinforce the rigidity of the buoyancy body located at the lower end of the solar cell module located at the outermost part and use an integrated continuum structure to reduce the wind load, thereby reducing the wind load that can secure structural stability. To provide a power generation system.

Third, the object of the present invention is to distribute the force of wind load or wave load formed by the wind to pass along the slope by providing a load reducing plate at the rear of the photovoltaic power generation unit, and not only to reduce the load, but also to float on the sea It is intended to provide a floating solar power generation system with reduced wind load that can increase the stability of the structure.

A feature of the present invention for solving the above-described problems is that a solar cell module unit composed of a floating structure floating above the water surface and a plurality of solar cell modules formed on the floating structure is connected by a hinge to be side by side in the longitudinal and lateral directions. A photovoltaic power generation unit disposed and formed; a mooring device for limiting the movement of the solar power generation unit; and an electric equipment unit installed on land or at sea to transmit electricity produced by the solar cell module unit, wherein a plurality of mooring lines of the mooring device are located on the outermost side of the solar power generation unit. It may be connected to the floating structure of the solar cell module inside the center direction so that the battery module is not constrained.

Here, the solar cell module unit, three solar cell modules spaced apart in the longitudinal direction and arranged side by side; and a support frame supported in the lower part of the solar cell module and forming a support structure on one bottom side so that the three solar cell modules are raised and inclined from the front to the rear, and the lower lateral direction of each position under the support frame It may be to include a floating structure provided with a buoyancy body mounted on both sides.

In addition, the solar module unit has a structure in which a plurality of module lines to which a plurality of solar cell module units are connected in a transverse direction are connected in a longitudinal direction to form a plurality of solar cell modules in the front outermost part of the solar power generation unit It is preferable that the buoyancy body located in the lower part and the buoyancy body located below the outermost solar cell module of the rear surface of the photovoltaic power generation unit are integrated continuous buoyancy bodies.

In addition, a load reducing plate having an inclined structure in the opposite direction to the solar cell module may be installed at the end of the solar cell module at the outermost rear surface of the solar power generation unit.

In addition, the mooring device includes: a plurality of mooring lines connected to the floating structure inside the outer part of the solar power generation unit, and an anchor for fixing the mooring lines to the sea floor; Installed on the mooring line and including a weight for increasing mooring force by adding a load, the anchor may be a suction pile of a cylindrical structure.

In addition, the suction pile may have a semicircular horizontal cross-section, and may form at least a pair of plate-shaped blades symmetrically to the center of the horizontal cross-section in the longitudinal direction on the outer surface of the suction pile.

Effects of the present invention for solving the above-described problems are as follows.

First, in order to reduce the increase in mooring force and structural material stress due to external loads such as wind load and wave load applied to the structure of the photovoltaic power generation unit according to the wind load and its own weight, the mooring line is connected to the photovoltaic power generation unit. The stability of the photovoltaic power generation facility is improved by reducing the mooring force caused by structural fluctuations by moving the It is possible to provide a wind load reduction floating solar power generation system that can be secured.

Second, in the present invention, the mooring line is connected to the inside of the photovoltaic power generation unit so that the solar cell module unit located at the outermost side is not constrained. In the case of the buoyancy body located at the lower end of the solar cell module located at the outermost part in that the load due to the wind load is large and the structure connection part cannot act as a hinge, the rigidity is reinforced and the integrated continuum structure is used to reduce the wind load. , structural stability can be secured.

Third, the present invention is provided with a load reducing plate at the rear of the photovoltaic power generation unit to distribute the force of wind load or wave load formed by the wind to pass along the slope, and the force pressing the load reducing plate in the vertical direction acts Thus, it is possible not only to reduce the load received by the solar module unit, but also to increase the stability of the structure floating in the sea.

Fourth, the present invention is a semi-cylindrical anchor fixed to the sea floor of the mooring device, which does not require large construction equipment for pile construction, does not require water depth restrictions, has a fast installation speed, is easy to dismantle, and has high reusability. By applying the suction pile structure, it is possible to secure high mooring fixing performance and stability for low cost.

1 shows a schematic diagram of the solar power generation unit of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.
Figure 2 shows a side view showing a mooring line on one side of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.
3 shows a schematic diagram illustrating the relationship between the position of the mooring line 210 and the wind load of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.
Figure 4 shows a side perspective view of the solar cell module unit located in the outermost front of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.
5 is a plan perspective view of a solar cell module unit located at the outermost rear side of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.
Figure 6 shows a bottom perspective view of the solar cell module unit located at the outermost rear of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.
7 shows a schematic diagram showing the principle of operation of the load reducing plate for reducing the wave load on the back of the wind load reduction floating solar power generation system according to an embodiment of the present invention.
8 is a schematic diagram showing the experimental method and contents of the hydraulic model experiment for the photovoltaic unit structure of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.
9 shows a graph showing the maximum mooring force results of the hydraulic model experiment for the photovoltaic unit structure of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.
10 is a view showing the structure of the anchor fixed to the sea floor of the mooring device applied to the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.
11 is a view showing a semicircular suction pile structure as an anchor structure of a mooring device applied to a wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is "connected" with another part, this includes not only the case of being "directly connected" but also the case of being "electrically connected" with another element interposed therebetween. . Also, when a part "includes" a component, it means that other components may be further included, rather than excluding other components, unless otherwise stated, and one or more other features However, it is to be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

The terms "about," "substantially," and the like, to the extent used throughout the specification are used in or close to the numerical values when manufacturing and material tolerances inherent in the stated meaning are presented, and are intended to enhance the understanding of the present invention. To help, precise or absolute figures are used to prevent unfair use by unscrupulous infringers of the stated disclosure. As used throughout the specification of the present invention, the term "step of (to)" or "step of" does not mean "step for".

In this specification, a "part" includes a unit realized by hardware, a unit realized by software, and a unit realized using both. In addition, one unit may be implemented using two or more hardware, and two or more units may be implemented by one hardware.

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

1 shows a schematic diagram of the solar power generation unit 100 of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.

As shown in Figure 1, the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention, a floating structure floating on the water surface, and a plurality of solar cell modules 115 formed on the upper portion of the floating structure solar The battery module unit 110 is connected by a hinge, the solar power generation unit 100 is formed to be arranged side by side in the longitudinal and transverse directions; a mooring device 200 for limiting the movement of the photovoltaic unit 100; and an electrical equipment unit installed on land or at sea to transmit electricity produced by the solar cell module 115, wherein a plurality of mooring lines 210 of the mooring device 200 are connected to the solar power generation unit 100 ) may be connected to the floating structure of the solar cell module 115 in the center direction except for the at least one solar cell module 115 located on the outermost side.

In this way, the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention increases the mooring force and structural material stress due to external loads and self-weight such as wind load and wave load applied to the structure of the photovoltaic unit 100 according to the wind load. In order to reduce the mooring line 210, the connection position of the photovoltaic power generation unit 100 is moved to the inside to reduce the mooring force caused by the structure fluctuation, thereby increasing the stability of the photovoltaic power generation facility, wind load or wave load It is possible to provide a wind load reduction floating photovoltaic power generation system that can secure safety by preventing the power plant from collapsing due to the overlapping load of the photovoltaic power generation facility structure.

More specifically, looking at the solar power generation unit 100 and the mooring line structure of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention, as shown in FIG. 1, the solar power generation unit 100 is, A plurality of solar cell module units 110 in which three solar cell modules 115 are arranged and installed on the floating structure are arranged in the lateral direction and in the longitudinal direction to form the solar power generation unit 100 of a wide area. can

Here, the solar cell module 115 provided in the solar cell module unit 110 may be provided in at least two or more in plurality, and the production cost, time, and the solar cell module unit 110 as the solar cell module unit 110 . In consideration of structural stability and suitability for forming the , the solar cell module unit 110 may be formed by providing an optimal number.

In addition, the above-described solar cell module unit 110 is the outermost solar cell module unit (110a, 110c) of the front and rear of the solar power generation unit 100 in order to reduce the external force caused by wind such as wind load and wave. A structure different from that of the solar cell module unit 110b located in the inner central portion may be formed.

That is, in the embodiment of the present invention, as shown in FIG. 1 , in the case of the outermost solar cell module unit 110a of the front side, the buoyancy body 113 of the floating structure is located at the bottom of the solar cell module 115 in the horizontal direction. It can be installed separately from both sides, and the buoyancy body 113a at the bottom of the solar cell module 115 located at the outermost side and the outermost solar cell module 115 of the rear outermost solar cell module unit 110 at the rear of the photovoltaic power plant. It is preferable that the buoyancy body 113c installed in the buoyancy body 113c is not a structure of the buoyancy body 113 separated on both sides, but a single integral buoyancy body 113a, 113c.

As described above, the load applied to the structure by external force such as wind load and wave has different effects depending on the location of the photovoltaic power plant. It is because it is preferable to use the buoyancy body (113a, 113c) which is an integral continuum structure as the buoyancy body (113a, 113c) located at the outermost part so as to reduce the wave load.

And, as shown in FIG. 1, the outermost part of the solar cell module unit 110 on the rear side of the photovoltaic power generation unit 100 is to prevent excessive uplift of the structure by the above-described wind load and wave. For this, it is preferable to provide a load reducing plate 119 having a structure inclined in the opposite direction to the inclination of the solar cell module 115 .

Structure of the solar cell module unit (110a, 110c) for reducing the wind load generated in the front and rear of the solar power generation unit 100 and the increase in mooring force generated by the wind load or wave illustrated in FIG. will be described in more detail with reference to the drawings.

Figure 2 shows a side view showing one side mooring line 210 of the floating photovoltaic power generation system for reducing wind load according to an embodiment of the present invention, Figure 3 is a mooring of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention A schematic diagram illustrating the relationship between the position of the line 210 and the wind load is shown.

As shown in FIG. 2, the mooring line 210 of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention is formed by a plurality of solar cell module units 110 arranged in the longitudinal and transverse directions. The at least one solar cell module 115 positioned at the outermost portion of the photovoltaic unit 100 may be connected to the floating structure of the solar cell module 115 inside the center direction so that the at least one solar cell module 115 is not constrained.

Here, at least one solar cell module unit 110a that is located at the outermost and is not constrained by the mooring line 210 is the location, size of the photovoltaic unit 100, and the size and generation of wind loads and waves in the normal climate of the installation site. The most effective location to reduce mooring force can be set by comprehensively considering information such as frequency.

As shown in FIG. 3 , a plurality of solar cell modules 115 are connected to each other by hinges in the longitudinal and lateral directions to form a photovoltaic power generation unit 100 formed by wind load of the solar power generating unit 100 . It can be seen that the stress and mooring force of the outermost structure increases as the wind loads overlap and transfer toward the outermost point. Therefore, in order to reduce the mooring force of the mooring line 210, if at least one solar cell module unit 110 at the outermost point is overflowed so that the mooring line 210 is not constrained by the mooring line 210, The mooring force can be effectively reduced.

That is, when the solar cell module unit 110 located at the outermost part of the photovoltaic power generation unit 100 according to the embodiment of the present invention is not constrained to the mooring line 210 , the wind load overflows, so solar power generation The mooring force of the mooring line 210 can be reduced by dispersing the force of the wind load received at the outermost position of the part 100 and changing the mooring line 210 to the inside having a smaller mooring force.

Figure 4 shows a side perspective view of the solar cell module unit (110a) located on the outermost front of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention.

As shown in Figure 4, the solar cell module unit (110a) located on the outermost front of the wind load reduction floating photovoltaic power generation system according to the embodiment, three solar cell modules 115 spaced apart in the longitudinal direction and arranged side by side ) and a support frame 111 that is supported in the lower part of the solar cell module 115 and forms a support structure on one side of the lower end so that the three solar cell modules 115 are raised and inclined from the front to the rear; It may be configured to include a floating structure provided with a buoyancy body 113 mounted on both sides of the lower lateral direction of the respective solar cell module 115 in the lower portion of the support frame 111 . And by forming a footrest 117 that connects the longitudinal support frame to each other in the transverse direction, it can be used as a movement path of the manager for the maintenance and management of the solar cell module.

Here, the solar cell module 115 is a plate-type module in which solar cells of a certain size are arranged in a matrix form, and receives or absorbs sunlight to convert it into an electrical signal. It is preferable to form an inclined structure to secure as much as possible direct sunlight received vertically.

And, the floating structure is a structure for supporting the above-described solar cell module 115 and floating on the water, so that a plurality of pipe-shaped floor support frames 111 and each solar cell module 115 are inclined in the longitudinal direction. A plurality of buoyancy bodies 113 may be provided at the lower position of each solar cell module 115 in order to form a support structure 112 supporting one side, and to float the floating structure on the bottom of the floor support frame 111 on the water. have.

Here, the buoyancy body 113 is to be mounted on the lower end of the support frame 111 , and may be provided separately on both sides of the solar cell module 115 at the lower end position of each solar cell module 115 , the photovoltaic power generation illustrated in FIG. 4 . In the case of the buoyancy body 113a located at the lower end of the outermost solar cell module 115a of the front surface of the part 100, it is preferable that it has an integrated continuum structure.

That is, the mooring line 210 of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention is connected to the inside of the photovoltaic power generation unit 100 so that the solar cell module unit 110a located at the outermost side is not constrained. , in the case of the solar cell module unit 110a located at the outermost part of the solar cell module located at the outermost part in that the restraint effect due to mooring is very small, the burden due to the wind load is large, and the structure connection part cannot serve as a hinge. In the case of the buoyancy body 113a positioned at the lower end of the 115, it is preferable to have an integral continuum structure to reinforce rigidity and reduce wind load.

Figure 5 shows a plan perspective view of the solar cell module unit 110c located at the outermost rear of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention, Figure 6 is a wind load reduction according to an embodiment of the present invention Shows a bottom perspective view of the solar cell module unit (110c) located at the outermost rear of the floating photovoltaic power generation system, Figure 7 is a wind load reduction according to an embodiment of the present invention Reducing the wave load of the rear surface of the floating photovoltaic power generation system It shows a schematic diagram showing the principle of operation of the load reducing plate 119 for the following.

As shown in FIG. 5, the solar cell module unit 110c located at the rearmost outermost side of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention is the same as the solar cell module unit 110a of FIG. three solar cell modules 115 spaced apart in the longitudinal direction and arranged side by side, supported in the lower part of the solar cell module 115, so that the three solar cell modules 115 are raised and inclined from the front to the rear. A floating structure provided with a support frame 111 forming a support structure on one side of the lower end, and a buoyancy body 113 mounted on both sides of the lower lateral direction of each solar cell module 115 in the lower portion of the support frame 111 . It may be composed of

However, the solar cell module unit 110 illustrated in FIGS. 5 and 6 is, unlike the solar cell module unit 110 of FIG. 4 , rigidity reinforcement and wind load at the bottom of the solar cell module 115 at the outermost position on the rear side. A load reducing plate 119 having a buoyancy body 113c of an integral continuum structure for reduction and having an inclined structure in the opposite direction to the inclined structure of the solar cell module 115 at the end of the outermost solar cell module 115 It may be a structure that forms a

As shown in FIG. 7 , a part of the solar cell module unit 110 located at the outermost rear surface of the solar power generation unit 100 is lifted by wind load and wave load on the rear surface of the photovoltaic power generation unit 100 , and a severe area occurs. Accidents that overturn and cause damage frequently occur. Therefore, the floating structure of the solar cell module 115 located at the outermost rear side of the solar power generation unit 100 of the floating photovoltaic power generation system for reducing wind load according to an embodiment of the present invention is a solar cell module 115 and It is preferable that the load reducing plate 119 having an inclined structure in the opposite direction is installed.

Such a structure of the load reduction plate 119 distributes the force of the wind load or wave load formed by the wind on the rear surface of the photovoltaic unit 100 to pass along the inclined surface, and the load reduction plate 119 in the vertical direction. There is an advantage of not only reducing the load received by the photovoltaic module unit by applying a pressing force, but also increasing the stability of the structure floating in the sea.

As shown in FIG. 7 , the wind load by the wind blowing in the horizontal direction is transmitted as a horizontal load and a vertical load of the inclined load reducing plate 119 as shown in FIG. 7 , and the horizontal load And the vertical load is combined and transferred to the vertical drag formed vertically downward of the load reducing plate (119). Therefore, it is possible to increase structural stability and prevent safety accidents by reducing the uplift phenomenon of the outermost solar cell module unit 110 on the rear side of the solar power generation unit 100 by wind and wave loads.

8 is a schematic diagram showing the experimental method and contents of the hydraulic model experiment for the structure of the solar power generation unit 100 of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention, and FIG. 9 is according to an embodiment of the present invention It shows a graph showing the maximum mooring force results of the hydraulic model experiment for the structure of the solar power generation unit 100 of the wind load reduction floating photovoltaic power generation system.

As shown in Figure 8, the structural behavior of the wind load reduction floating photovoltaic power generation system according to the embodiment of the present invention is evaluated, the load of the surface conditions is derived, and an analysis module is developed to reduce the structural stability for an optimized design. A hydraulic model was tested, and a 1/10 scale model was manufactured as an experimental method, and the mooring force and displacement were measured according to the location of the power generation part by entering the wave height through a wave breaker, and the mooring force and power generation according to the direction of wave travel. Structural behavior was evaluated from negative displacement.

It can be seen that the experimental results by producing a reduced hydraulic model based on the experimental method and experimental contents showed the same result as the maximum mooring force graph of the hydraulic model experiment, as shown in FIG. 9 , the 180deg incident wave direction For , the mooring force tends to increase nonlinearly as the incident wave height increases, and for a 45deg incident wave direction, the mooring force is evaluated to converge at an incident wave height of 1.0 or higher, and the vertical displacement of the structure at the end is relatively large. Able to know.

That is, it can be seen that the structures are more strongly constrained by the adjacent structures in the inward direction because the structure connection part does not act as a hinge for the 45deg wave direction. And, it can be seen that the mooring force is evaluated to be smaller because the displacement of the structure located inside is relatively small due to the restraint effect of the nearby structure, and it can be seen that the dominant mooring force is derived from the wave directions 0 and 180deg.

As such, it was found that the following results appeared through the hydraulic model experiment on the structure of the solar power generation unit 100 of the floating solar power generation system for reducing wind load according to an embodiment of the present invention.

1) Maximum displacement distribution: As the incident wave height increases, the vertical displacement of the structure increases linearly, and the maximum vertical displacement of the outer structure is predicted to be about 2.1m under the condition of wave direction 180deg and design wave height (1.5m), and wave direction 45deg. , it was found that the maximum vertical displacement of the edge end structure was predicted to be about 2.3m under the design wave height (1.5m) condition. That is, it can be seen that the edge structure has a relatively small constraint effect by the adjacent structure, and a relatively large displacement occurs because it independently resists the incident wave height.

2) Maximum mooring force distribution: The mooring force tends to increase nonlinearly as the incident wave height increases, and the maximum mooring force is predicted to be 0.472N/m under the condition of wave direction 180deg and design wave height (1.5m), wave direction 45deg, It was found that the maximum mooring force in the design wave height (1.5) condition was evaluated relatively smaller than the wave direction 180deg condition. That is, since the connection part of the mooring line 210 is located inside the photovoltaic power generation unit 100, the influence by the fluctuation of the structure is not large, and the connection part of the structure does not act as a hinge with respect to the incident direction of the wave height, It was found that the influence of mutual restraint by the nearby structures was large, and the fluctuation of the inner structure was relatively small.

In this way, the mooring line 210 connection part is located inside the photovoltaic power generation unit 100 through a hydraulic model test for the structure of the solar power generation unit 100 of the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention. , it can be clearly seen that the structural stability of the floating photovoltaic power generation system can be effectively increased through the reinforcement of the integral continuous buoyancy body 113 structure and the load reduction plate 119 structure because the outermost structure has a small restraint effect by mooring. have.

10 is a view showing the structure of an anchor 250 fixed to the sea floor of the mooring device 200 applied to the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention, FIG. 11 is an embodiment of the present invention It is a view showing a semicircular suction pile structure as an anchor structure of the mooring device 200 applied to the wind load reduction floating photovoltaic power generation system according to the example.

As shown in Figure 10, the mooring device 200 applied to the wind load reduction floating photovoltaic power generation system in the embodiment of the present invention is a plurality of a mooring line 210 and an anchor 250a for fixing the mooring line 210 to the sea floor; A weight (not shown) installed on the mooring line to increase mooring force by adding a load, the anchor 250a may be a suction pile having a cylindrical structure.

The anchor for fixing the mooring line 210 of the floating photovoltaic structure is a concrete block for installing a basic structure with a large self-weight on the ground, and a mooring load with pull-out resistance by rotating a screw pile in the soil. Supporting the mooring load with screw filings to support, steel pipe piles that support mooring loads with frictional force acting on piles and the surrounding ground by press-fitting large steel pipes, and surface frictional force through press-fitting using internal and external hydraulic pressure differences in case-type steel pipes There may be a suction file that says

Concrete blocks are difficult to settle in an accurate position depending on the underwater terrain, etc., the horizontal resistance force changes depending on the ground characteristics (soft ground, rocky ground, etc.), and there are problems such as the risk of collision with water structures at low water level, In the case of screw piles, it is a method applied on land, and the construction cost is higher than that of concrete blocks, and in the case of steel pipe piles, the disadvantage is that the high construction cost and additional cost burden of restoration are large, whereas in the case of suction piles Compared to concrete blocks, the mooring device of the floating floating photovoltaic power generation system (floating photovoltaic power generation system) has the advantages of securing reliable mooring stability and excellent maintenance during operation, easy installation and dismantling, and excellent constructability. 200) is preferred.

Such a suction pile anchor enters vertically on the bottom of the sea, separates the suction device accommodated inside the cylindrical suction pile, and secures the bearing power with the lateral friction force due to the difference in internal and external water pressure, and a ring located in the center of the outer surface of the cylinder When the mooring line 210 is connected through the type mooring line 210 connection part, the outer surface of the suction pile is inclined in the direction of the mooring line 210 due to the tensile force of the mooring line 210, and the ground area increases to increase the mooring force. to form a secure structure.

Therefore, the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention is an anchor 250 fixed to the sea floor of the mooring device 200, and there is no need for large construction equipment for pile construction, and water depth restrictions are required. By applying the structure of the suction piles 250a and 250b, which has no, fast installation speed, easy disassembly, and high reusability, high mooring fixing performance and stability can be secured for low cost.

As shown in FIG. 10, the anchor structure of the suction pile 250a applied to the embodiment of the present invention is a cylindrical case structure, and plate-shaped wings formed in the longitudinal direction of the cylindrical surface at four points symmetrically from the center of the horizontal cross section. (253a) and may have a structure having a ring-shaped mooring line connection part (255a) on one central side of the cylindrical outer surface (251a). Here, the wing structure can increase the mooring force and mooring stability by increasing the ground area resisting the tensile force formed in the direction of the mooring line 210 .

And, as shown in FIG. 11, as another embodiment, the wind load reduction floating photovoltaic power generation system according to an embodiment of the present invention is an anchor 250b fixed to the sea floor of the mooring device 200, and a suction pile The structure is used, but the horizontal cross-section may be a semi-circular structure, and at least a pair of plate-shaped blades 253b may be formed symmetrically to the center of the horizontal cross-section in the longitudinal direction on the outer surface 251b of the suction pile of the semi-cylindrical structure. have.

The semi-cylindrical structure of the suction pile 250b shown in FIG. 11 secures the same ground area as the structure of the suction pile 250a of the cylindrical structure of FIG. 10, thereby securing the same mooring force and material cost It has the advantage of securing economy and constructability through reduction and weight reduction.

The foregoing description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100: solar power generation unit
110: solar cell module unit
119: load reduction plate
200: mooring device
210: mooring line
250: anchor

Claims (7)

A solar cell module unit comprising a floating structure floating on the water surface and a plurality of solar cell modules formed on the floating structure is connected by a hinge and arranged side by side in the longitudinal and lateral directions;
a mooring device for limiting the movement of the solar power generation unit; and
Including an electrical equipment unit installed on land or at sea to transmit electricity produced by the solar power generation unit,
A plurality of mooring lines of the mooring device are connected to the floating structure of the solar cell module inside the center direction so that the at least one solar cell module located on the outermost side of the solar power generation unit is not constrained,
The mooring device is
A plurality of mooring lines connected to the floating structure inside the outer part of the solar power generation unit, and an anchor for fixing the mooring line to the sea floor; Installed on the mooring line and including a weight for increasing mooring force by adding a load,
The anchor is a suction pile of a cylindrical structure,
Wind load reduction floating photovoltaic power generation system, characterized in that forming at least a pair of plate-shaped blades symmetrically to the center of the horizontal cross-section in the longitudinal direction on the outer surface of the suction pile. According to claim 1,
The solar cell module unit,
Three solar cell modules arranged side by side spaced apart in the longitudinal direction; and
A support frame supported in the lower part of the solar cell module and forming a support structure on one side of the lower end so that the three solar cell modules are raised and inclined from the front to the rear; Wind load reduction floating solar power generation system, characterized in that it comprises a floating structure provided with a buoyancy body mounted on. 3. The method of claim 2,
The solar power generation unit,
As a structure in which a plurality of module lines to which the solar cell module unit is connected in a transverse direction are connected in a longitudinal direction, a plurality of modules are disposed,
Wind load reduction water state, characterized in that the buoyancy body located under the outermost solar cell module in the front of the photovoltaic power generation unit, and the buoyancy body located below the outermost solar cell module in the rear surface of the photovoltaic power generation unit is an integrated continuous buoyancy body photovoltaic power generation system. 4. The method of claim 3,
The wind load reduction floating photovoltaic power generation system, characterized in that a load reducing plate having an inclined structure in the opposite direction to the solar cell module is installed at the end of the outermost solar cell module at the rear of the photovoltaic power generation unit. delete In claim 1,
The suction pile is a wind load reduction floating photovoltaic power generation system, characterized in that the horizontal cross-section is a semi-circular structure.
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