WO2011055900A2

WO2011055900A2 - Photovoltaic apparatus and mooring apparatus for same

Info

Publication number: WO2011055900A2
Application number: PCT/KR2010/005948
Authority: WO
Inventors: 김승섭
Original assignee: 주식회사 위닝비즈니스
Priority date: 2009-11-05
Filing date: 2010-09-02
Publication date: 2011-05-12
Also published as: KR20110049426A; KR101165739B1; WO2011055900A3

Abstract

A photovoltaic apparatus according to the present invention comprises: a cell panel on which a solar cell module for collecting sunlight and converting same into electricity is installed; a main frame installed below the cell panel, configured with at least three subframes partitioned into a plurality of hollow blocks sealed off from one another by partitions so as to store fluid, and providing buoyancy to expose the cell panel above the water level; a fluid transfer unit coupled to selectively communicate with the inside of each hollow block of the subframes, so as to feed or discharge fluid into/out from each hollow block in order to alter the center of gravity of the main frame in the water; and a controller that analyzes changes in the azimuth of the sun, controls the fluid transfer unit to alter the center of gravity of the main frame according to the analyzed data, and changes the orientation of the main frame.

Description

PV system and mooring device therefor

The present invention relates to a photovoltaic device and a mooring device therefor, and more particularly, a mainframe in which a solar cell module is installed is installed on the surface of the water to move a fluid so that the center of gravity of the mainframe changes according to the solar altitude. It relates to a photovoltaic device for changing the attitude of the frame and a mooring device therefor.

In general, the ground-mounted solar power plant is first proposed a stationary type, and then a single-axis, two-axis type, etc. that can move along the solar light has been proposed in turn.

Here, the short axis and the double axis are used to rotate the solar cell-mounted structure around the axis using an electric motor or hydraulic pressure installed on the column vertically connected to the flat reinforced concrete base.

However, such a solar power plant installed on the ground has a problem in that the installation cost for posture stability of the structure increases as the size of the structure for fixing the solar cell increases.

On the other hand, as a solar power plant installed on the water surface, a solar power plant installed on the water surface using buoyancy has been proposed.

Japanese Patent Application Laid-Open No. 61-133673 includes a subsidiary body mounted on top of a solar cell module and containers disposed on both sides of the subsidiary body to move fluid stored in the containers in accordance with the altitude of the solar cell. A technique for controlling posture of a is disclosed.

The photovoltaic device installed in such a structure has a problem in that it is difficult to control the attitude due to the heavy photovoltaic device as the solar cell module is provided with the main body and the containers for storing the fluid. There was a difficult problem to secure economic feasibility.

In addition, since the positions of the containers installed on both sides of the subsidiary body are located on the upper side of the water surface, the center of gravity of the power generation apparatus is located at a point close to the water surface, thereby causing a problem that the subsidiary body located on the water surface becomes unstable.

In addition, there is no means of restricting the movement of fluid inside containers when the solar power device is shaken by strong winds (especially natural disasters such as typhoons). And there was a problem in ensuring stability.

In addition, since there is no odd number (depth submerged) control function of the photovoltaic device installed on the water surface, there is a problem that the operator's stability and workability are not guaranteed during repair and maintenance of the solar cell module and the floating body. there was.

On the other hand, as a device capable of mooring the above-described photovoltaic device at a certain place on the ground, FIG. 1 shows a schematic view of a mooring device of a conventional photovoltaic device.

Referring to FIG. 1, the mooring apparatus of a solar power generator installed on the water surface of a conventional lake or the like fixes the support B to the lake bottom below the water surface of the lake on which the solar power generator A is installed, and supports B. It was common to fix the photovoltaic device (A) with a string (C).

Such a mooring device of the conventional photovoltaic device has a problem that it is difficult to cope with the stable water level change as the water rises or falls only by buoyancy of the photovoltaic device when the water rises or falls.

In addition, when installing a plurality of photovoltaic devices, the support cost must be installed for each photovoltaic device has a very high installation cost.

Therefore, an object of the present invention is to solve such a conventional problem, the main frame in which the solar cell module is installed consists of a plurality of sub-frames divided into hollow blocks to transfer the fluid to the inside and outside of each hollow block main By changing the center of gravity of the frame, it is to provide a photovoltaic device that can be changed economically and stably through a reduction in manufacturing cost.

In addition, since the shape of each subframe is provided in an arc shape, the mutually fastened subframes are formed in a hemispherical shape to maintain a stable attitude in the water, and to provide a photovoltaic device that improves economics by reducing material costs.

In addition, the present invention provides a photovoltaic device that can improve the stability of the mainframe by preventing fluid from being extremely pulled by transferring the fluid into and out of each hollow block partitioned in each subframe.

In addition, the fluid is transferred to the inside and outside of each hollow block is the center of gravity of the main frame is located below than in the prior art to provide a photovoltaic device with improved stability.

In addition, the fluid is transferred to the inside and outside of each hollow block is easy to adjust the odd number of the main frame to provide a photovoltaic device that can improve the work safety of the operator during maintenance and repair.

In addition, the present invention provides a mooring apparatus for a photovoltaic device that can actively respond to changes in water level and reduce installation costs.

The object is, according to the present invention, a solar panel is installed solar cell module for converging the sunlight into power; A main frame installed under the battery panel, the main frame providing buoyancy for exposing the battery panel to the water surface, including at least three subframes divided into a plurality of hollow blocks sealed by partition walls to store fluid; A fluid transfer unit coupled to selectively communicate with the inside of each hollow block of the subframe to draw fluid into and out of each hollow block such that the center of gravity of the main frame is changed in water; And a controller for analyzing the azimuth change of sunlight and controlling the fluid transfer unit to change the center of gravity of the mainframe according to the analyzed data, thereby changing the attitude of the mainframe.

Here, one side of the subframe may be arranged to be spaced apart from each other in the battery panel, the other side may be coupled to the other side of the other subframes.

In addition, the subframe is provided in an arc shape in terms of material cost reduction desirable.

In addition, the fluid transfer pipe coupled to communicate with the side of each hollow block of the subframe, the valve is installed to selectively communicate with the fluid transfer pipe and each of the hollow blocks, and when the valve opening the fluid into and out of each hollow block It may include a pump for conveying.

In addition, the control unit, the tilt sensor for sensing the inclination of the x-axis and y-axis of the main frame, the compass sensor for sensing the north-west, north-west orientation of the main frame, and analyzes the change in the azimuth angle of the sunlight, according to the analyzed data It may include a control unit for changing the center of gravity of the main frame by controlling the fluid transfer unit so that the solar light and the solar cell module is vertical.

On the other hand, buoyancy body connected to at least one of the photovoltaic device; At least one first and second supports fixed to the ground surface and the bottom surface; A pulley installed on the buoyancy body; A string connecting the first support and the second support through the pulley; Mooring the photovoltaic device by the mooring device of the photovoltaic device, comprising: a gravity weight coupled to the string, coupled between the pulley and the second support.

According to the present invention, the main frame in which the solar cell module is installed is composed of a plurality of subframes divided into hollow blocks to transfer fluid into and out of each hollow block, thereby stably changing posture by changing the center of gravity of the mainframe. There is provided a photovoltaic device.

In addition, since the shape of each subframe is provided in an arc shape, the mutually fastened subframes are formed in a hemispherical shape, thereby providing a solar cell apparatus capable of maintaining a stable posture in water.

In addition, there is provided a photovoltaic device that can improve the stability of the mainframe by preventing the fluid to be extreme by moving the fluid into and out of each hollow block partitioned in each subframe.

In addition, the fluid is transferred to the inside and outside of each hollow block is the center of gravity of the main frame is positioned below the conventional provides a photovoltaic device with improved stability.

In addition, since the fluid is transferred to the inside and outside of each hollow block it is easy to adjust the odd number of the main frame is provided with a photovoltaic device that can improve the work safety of the operator during maintenance and repair.

In addition, there is provided a mooring apparatus for a photovoltaic device that can actively respond to a change in water level and which reduces installation costs.

1 is a schematic view of a mooring apparatus of a conventional photovoltaic device;

2 is a schematic view of a photovoltaic device according to a first embodiment of the present invention,

3 is a cross-sectional view taken along line III-III 'of FIG. 2;

4 is a detailed view of the controller of FIG. 3;

5 to 7 is an operating state of the photovoltaic device of Figure 2,

8 is a schematic diagram of a main frame of a photovoltaic device according to a modification of the first embodiment of the present invention.

9 is a schematic view of a mooring device of a solar cell apparatus according to a second embodiment of the present invention;

10 is a plan view of FIG. 9;

11 is an operation of the mooring device of a photovoltaic device according to a second embodiment of the present invention.

10: battery panel 20: main frame 21: first sub-frame

21a: hollow block 22: second sub frame 23: third sub frame

24: fourth subframe 25: partition 30: fluid transfer unit

31: fluid transfer pipe 31a: main pipe 31b: branch pipe

32 valve 33 pump 40 control unit

41: tilt sensor 42: compass sensor 43: control unit

100: mooring device of the photovoltaic device 110: buoyant body

120: pulley 130: first support 140: second support

150: string 160: gravity weight

Prior to the description, in the various embodiments, components having the same configuration will be representatively described in the first embodiment using the same reference numerals, and in other embodiments, different configurations from the first embodiment will be described. do.

Hereinafter, a solar cell apparatus according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic diagram of a photovoltaic device according to a first embodiment of the present invention.

Referring to FIG. 2, the solar cell apparatus 1 according to the first embodiment of the present invention includes a battery panel 10, a main frame 20, a fluid transfer unit 30 of FIG. 2, and a control unit 40 of FIG. 2. It is configured to include).

The battery panel 10 is a panel in which a plurality of solar cell modules (s) for focusing and converting sunlight into power are installed, and are coupled to an upper portion of the main frame 20 to be described later. Here, the battery panel 10 may be provided in a grid frame.

On the other hand, the solar cell module (s) is installed in a form lying on the panel 10, that is, parallel to the panel 10, it is economical to maximize the solar cell installation area.

3 is a cross-sectional view taken along line III-III ′ of FIG. 2. 2 and 3, the main frame 20 may include a first subframe 21, a second subframe 22, a third subframe 23, and a fourth subframe having an approximately arc shape. It is composed of four subframes 24 and are spaced apart from each other in the lower portion of the battery panel 10.

At this time, each subframe may be formed to include a straight line or some curves, it is most preferable to have an arc shape in order to minimize damage from external force generated in the water phase, and to secure economic efficiency.

In addition, the first subframe 21 is disposed to face the second subframe 22, and the third subframe 23 is disposed to face the fourth subframe 24, and the first, second, The upper side of the third and

fourth subframes

21, 22, 23, and 24 is coupled to the battery panel 10, and the lower side is coupled to other subframes, respectively.

In particular, the first subframe 21, the second subframe 22, and the third subframe 23 and the fourth subframe 24, which are disposed in a direction facing each other, have a lower half side coupled to each other to form a substantially semicircular shape. Are combined.

That is, the first subframe 21, the second subframe 22, and the third subframe 23 and the fourth subframe 24, which are coupled in a semicircular shape, are coupled to each other at the lower side thereof so that the main frame 20 is connected to each other. The whole is formed in a hemispherical shape, support means (a) for supporting between the sub-frames may be further installed to support such a shape.

As the main frame 20 is formed in a hemispherical shape as described above, it is possible to minimize the flow of the main frame 20 due to the disturbance generated in the water phase, and the battery panel installed on the main frame 20 ( 10) As the azimuth angle of the sunlight changes, the center of gravity can be easily moved so that the posture in the water can be changed.

In addition, each subframe is formed of an empty hollow inside to provide buoyancy so that the battery panel 10 is exposed on the surface of the water, and the plurality of partition walls 25 spaced apart by a predetermined distance from the hollow inner space. It is partitioned into a plurality of hollow blocks 21a sealed by each other.

Each of the hollow blocks 21a may provide buoyancy so that the fluid entering and exiting through the fluid transfer unit 30 to be described later in the state of being sealed with the adjacent hollow blocks is stored and the battery panel 10 is exposed to the surface of the water. have.

In addition, the fluid stored in each hollow block 21a is the fluid stored in each hollow block 21a partitioned by the partition wall 25 when the photovoltaic device shakes due to disturbance such as typhoon or strong wind. Since it is not moved to the block it is possible to prevent the fluid from flowing in any direction inside the subframe, thereby ensuring the stability of the entire photovoltaic device.

In addition, the fluid can be stored in each of the hollow blocks 21a, so that the position of the center of gravity of the mainframe 20 can be positioned below the surface of the water as compared to the conventional stability of the mainframe 20 located in the water phase. This is further improved, and as a result, the posture change in the water of the mainframe 20 can be facilitated.

Next, the fluid transfer unit 30 is configured to include a fluid transfer pipe 31, the valve 32, the pump 33. Here, the fluid transfer pipe 31 is composed of a main pipe 31a disposed along the above-described subframes and a branch pipe 31b branched at a position corresponding to the position of each hollow block 21a from the main pipe 31a. do.

Branch pipe (31b) is branched from the main pipe (31a) is installed to communicate with the hollow block (21a) of each subframe.

In addition, each branch pipe (31b) is provided with a valve 32 so that the hollow block (21a) and the main pipe (31a) is selectively communicated with each other, the opening and closing control according to the control signal of the controller 40 to be described later.

At this time, the external branch pipe (b) is coupled to communicate with the main pipe (31a), the external branch pipe (b) is controlled through the control unit 40 to be described later, the main frame 20 through the external branch pipe (b) The communication valve (b ') is installed to selectively communicate with the outside of the main pipe (31a). Through this, the total amount of fluid supplied to each subframe can be adjusted.

The pump 33 operates in accordance with a control signal of the controller 40 to be described later, and from the inside of the hollow block 21a to the inside of the hollow block 21a from the main pipe 31a when the valves 32 are opened. It is installed to transfer the fluid to the main pipe (31a).

On the other hand, the fluid transfer pipe 31 may be connected to a separate fluid supply tank (not shown) to supply the fluid. Conventionally, the odd number, which is the depth submerged into the water of the frame, cannot be adjusted by appropriately adjusting a certain amount of fluid, so that the odd number can be adjusted by increasing or decreasing the fluid through the transfer pipe. .

As a result, the maintenance ease, safety and stability of the photovoltaic device can be secured by adjusting the odd number during maintenance or bad weather.

4 is a detailed view of the controller of FIG. 3. Referring to FIG. 4, the controller 40 may be installed in the main frame 20 or separately installed, and includes a tilt sensor 41, a compass sensor 42, and a control unit 43.

The inclination sensor 41 is installed to be perpendicular to the plane to sense the inclination of the x-axis and y-axis of the main frame 20, respectively, the compass sensor 42 is installed to sense the north-west, north-west orientation of the main frame 20 do.

The control unit 43 is a posture of the mainframe 20 along the sunlight through the data obtained by using any one of a known method of operating the sensor of the sunlight, a GPS tracking method or a method based on the azimuth data value of the sun. An algorithm is implemented to yield

In addition, by using the tilt sensor 41 and the compass sensor 42 to recognize the current position of the main frame 20, and the sun of the sun secured using other tools such as the altitude of the sun or GPS by the date and time of the pre-stored year The center of gravity of the mainframe is changed by controlling the fluid transfer unit so that the altitude and position of the sun and the solar cell module are perpendicular to the position.

That is, the control unit 43 and the state of the current posture of the main frame 20 sensed by the tilt sensor 41 and the compass sensor 42 according to the calculated posture (tilt and orientation) of the mainframe 20 Comparing the rotation angle and the inclination angle to be rotated, based on this control the fluid transfer unit 30 so that the center of gravity of the main frame 20 is changed to transfer the fluid into and out of each subframe to improve the attitude of the main frame 20 To change.

As a result, the conventional photovoltaic device installed in the water phase had to be provided separately from the frame for installing the solar cell module to change the posture and the buoyancy means for providing buoyancy so that the frame is exposed over the water surface, the posture in the present invention The changing mainframe is configured to provide a buoyancy while at the same time the solar cell module is installed, it is possible to reduce the manufacturing cost.

The operation of the first embodiment of the above-described photovoltaic device will now be described.

5 to 7 is an operating state diagram of the photovoltaic device of FIG. Referring to FIG. 5, when the photovoltaic device 1 is installed in the water, the mainframe 20 is on the surface of the water due to the buoyancy of the

subframes

21, 22, 23, and 24 constituting the mainframe 20. Will float.

In this case, the hollow block 21a of each subframe may be installed in the water frame in the state filled with a predetermined fluid, or may be filled with the fluid through the fluid transfer unit 30 after installation.

In such a state, the control unit 40 obtains the azimuth angle of the solar light through the above-described method, and opens the valve of the hollow block 21a so that the main frame 20 rotates according to the obtained data to open the hollow block from the conveying pipe. The fluid is moved to 21a or the fluid is transferred from the hollow block 21a to the transfer pipe.

As the amount of fluid stored in each of the hollow blocks 21a is added or subtracted, the center of gravity of the main frame 20 is changed and is inclined at a predetermined angle as shown in FIG. 6.

That is, the first subframe 21, the second subframe 22, the third subframe 23, and the fourth subframe 24 constituting the main frame 20 are stored in each hollow block. By appropriately adjusting the amount of fluid to be changed by changing the center of gravity of the main frame 20 it is possible to adjust at any angle to the 360 ° front azimuth (方位).

As a result, as described above, the fluid is added to or subtracted from the hollow block of the subframe, so that the solar cell module s installed in the battery panel 10 can be positioned perpendicular to the sunlight to focus the sunlight more efficiently. You can do it.

In addition, the photovoltaic device is generally installed at a height such that the solar cell module (s) is not submerged underwater from the surface in preparation for the low altitude of the sun. That is, an odd number of depths submerged in the mainframe should be kept constant.

However, when maintenance of the photovoltaic device is required, it is preferable to increase the odd number so that the mainframe is deeply submerged in water, and to secure the stability of the photovoltaic device from disturbance such as strong wind or typhoon. It is desirable to increase the power so that the mainframe is submerged more underwater.

To this end, as shown in Figure 7, when the same amount of fluid is filled in each of the hollow blocks formed in the subframe through the fluid transfer unit to increase the odd number without changing the attitude of the mainframe to lock the mainframe more underwater Can do it.

Through this, it is possible to ensure the ease of maintenance and stability of the photovoltaic device.

On the other hand, as a modification of the first embodiment of the present invention described above, compared to the main frame of the first embodiment is composed of four subframes, as shown in Figure 8, three subframes in the lower portion of the battery panel Arranged, the upper side of each subframe coupled to the battery panel is formed to be spaced apart in the form of an equilateral triangle or an isosceles triangle, the lower side may be formed in a mutually coupled form.

Next, a mooring device of a photovoltaic device will be described as a second embodiment of the present invention. 9 is a schematic diagram of a mooring apparatus of a solar cell apparatus, and FIG. 10 is a plan view of FIG. 9.

9 and 10, the mooring apparatus 100 of the solar cell apparatus according to the second embodiment of the present invention includes one or more solar cell apparatuses 1, a buoyancy body 110, and a first support 120. ), The second support 130, the pulley 140, the string 150 and the gravity weight 160 is configured to include.

One or more photovoltaic devices 1 are connected to each other through a connecting member 110 'such as a string and installed on the surface of a river, a lake, or the sea.

The buoyancy body 110 is a means for providing buoyancy, and is connected through the photovoltaic device 1 closest to the ground and the connection member 110 ′.

The pulley 120 is installed at a predetermined portion of the buoyancy body 51. The illustrated bar shows what is installed on the lake.

The first support 130 is provided in plural and fixedly spaced apart at regular intervals on the ground surface, that is, the embankment, and the second support 140 is installed on the underwater bottom surface, that is, the lake bottom surface. The bar shows that the first support 130 is provided in pairs and fixedly spaced apart from each other on the embankment.

The string 150 connects the pair of

first supports

131 and 132 and the second support 140 through the pulley 120, and the gravity weight 160 is the pulley 120 and the second support 140. It is coupled with the string 150 between.

That is, the odd number (depth immersed in water) of the buoyancy body 110 through the gravity weight 160 may be kept constant.

The operation of the mooring device of the photovoltaic device as described above is as follows. 11 is an operation of the mooring device of a photovoltaic device according to a second embodiment of the present invention.

When the water level rises in the state as shown in FIG. 9, the photovoltaic device 1 is accompanied by a rise in response to the water level by its own buoyancy.

In addition, referring to FIG. 11, the buoyancy body 110 has a length of the string 150 between the first support 130 and the pulley 120 and the second support 140 and the pulley 120 corresponding to the rising water level. As the length of the string 150 between) increases and decreases along the rising water level, the accompanying weight increases while maintaining a constant odd number by the gravity weight 160.

Through this, the photovoltaic device 1 is a buoyancy body 110 connected to the connection member 110 'is raised in response to the water level, so that the photovoltaic device 1 stably rises in accordance with the change in water level (繫留)

The above description has been made regarding the case where the water level rises, and in the same principle, the buoyancy body 110 descends in response to the falling water level, thereby stably mooring the photovoltaic device 1. Can be.

This can not only stably raise the photovoltaic device in response to the rising or falling water level in comparison with the conventional mooring device, it can also reduce the number of supports to be installed can reduce the installation cost.

The scope of the present invention is not limited to the above-described embodiment, but may be embodied in various forms of embodiments within the scope of the appended claims. Without departing from the gist of the invention claimed in the claims, it is intended that any person skilled in the art to which the present invention pertains falls within the scope of the claims described in the present invention to various extents which can be modified.

The present invention is a technique that can be used in solar power plants and equipment installed in reservoirs, lakes, rivers, seas.

Claims

A battery panel in which a solar cell module is installed to focus and convert sunlight into electric power;

A main frame installed at a lower portion of the battery panel and configured of at least three subframes divided into a plurality of hollow blocks sealed by partitions to store fluid, thereby providing buoyancy to expose the battery panel to the surface of the water;

A fluid transfer unit coupled to selectively communicate with the inside of each hollow block of the subframe to draw fluid into and out of each hollow block such that the center of gravity of the main frame is changed in water;

And a controller configured to change the attitude of the main frame by analyzing the azimuth change of sunlight and controlling the fluid transfer unit so that the center of gravity of the main frame is changed according to the analyzed data.
The method of claim 1,

One side of the subframe is disposed so as to be spaced apart from each other in the battery panel, and the other side is coupled to the other side of the other subframes.
The method of claim 1,

The subframe is a photovoltaic device characterized in that it is provided in an arc shape.
The method of claim 1,

The fluid transfer unit,

A transfer tube coupled to communicate with each of the hollow blocks of the subframe, a valve installed to selectively communicate with each of the hollow blocks, and a pump for transferring fluid into and out of each hollow block when the valve is opened. Photovoltaic device characterized in that.
The method according to any one of claims 1 to 4,

The control unit,

An inclination sensor for sensing the inclination of the x-axis and the y-axis of the mainframe, a compass sensor for sensing the north-west, south-west orientation of the mainframe, and a change in the azimuth angle of sunlight, and the sunlight and the sun And a control unit for changing the center of gravity of the main frame by controlling the fluid transfer unit so that the battery module is vertical.
A buoyancy body connected to at least one solar cell apparatus of any one of claims 1 to 5;

At least one first and second supports fixed to the ground surface and the bottom surface;

A pulley installed on the buoyancy body;

A string connecting the first support and the second support through the pulley;

And a gravity weight coupled to the string and coupled between the pulley and the second support.