KR20190115891A - Photovoltaic power generation and power distribution system using utility pole for electric power distribution - Google Patents

Abstract

According to the present invention, provided is a photovoltaic power generation and power distribution system which comprises: a plurality of utility poles for power distribution supporting a distribution line and distributing alternating current (AC) power supplied through the distribution line to a customer; and a photovoltaic module device installed in two utility poles for power distribution among the plurality of utility poles for power distribution. The photovoltaic module device has at least one solar cell module generating direct current (DC) power by using solar light and a connection cable connected between the two utility poles for power distribution and having the at least one solar cell module coupled thereto. The power generated from the solar cell module is distributed through the utility pole for power distribution.

Description

Photovoltaic power generation and distribution system using power poles for distribution {PHOTOVOLTAIC POWER GENERATION AND POWER DISTRIBUTION SYSTEM USING UTILITY POLE FOR ELECTRIC POWER DISTRIBUTION}

The present invention relates to photovoltaic power generation, and more particularly, to a power distribution system for supplying power produced by photovoltaic power generation to customers.

Fossil fuels, which are mainly used to produce electricity today, are a kind of resources with limited reserves on the planet. They are used indiscriminately in response to the rapid increase of electric energy due to industrial development, and cause serious environmental pollution. As it is expected to be exhausted, the development of so-called clean energy, which can replace fossil fuels, is being actively promoted around the world.

Photovoltaic power generation is attracting much attention because it can be used without limit and without pollution among alternative energy along with wind power generation. In particular, photovoltaic power generation is a semiconductor device with a power generation part, and a control part is composed of electronic parts having a very long life, and there is no occurrence of mechanical vibration or noise, and operation life of several decades is guaranteed.

Due to the geometry of the ground on which the photovoltaic module is installed, various applications are possible during installation, and the control and operation of the power generation system can be controlled remotely or unattended through semi-automation or automation program. Therefore, active utilization of solar power generation system is an alternative power generation system that should be actively developed in an environment like Korea, where energy resources are absolutely lacking.

The present invention relates to a power distribution system for supplying electricity produced by photovoltaic power generation to a customer, and Korean Patent No. 10-1119140, which is a prior patent document related to the present invention, has a solar panel installed on a stand and a solar cell panel. A distribution line for photovoltaic power generation electricity having a distribution line for transmitting the produced electricity to a consumer is described.

Republic of Korea Patent Publication No. 10-1119140 "Power Distribution Line for Solar Power Generation" (2012.03.20.)

It is an object of the present invention to provide a photovoltaic power generation and distribution system that can efficiently supply power produced by photovoltaic power to consumers.

In order to achieve the above object of the present invention, in accordance with an aspect of the present invention, a plurality of power poles for supporting a distribution line and for distributing AC power supplied through the distribution line to the customer; And a photovoltaic module device installed on two distribution poles of the plurality of distribution poles, wherein the solar module device comprises: at least one solar cell module that generates direct current power using sunlight; And a connection cable connected between the two distribution poles and the at least one solar cell module coupled thereto, wherein the power generated by the solar cell module is distributed through the distribution poles. This is provided.

The photovoltaic module device further includes a DC-AC converter for converting the DC power produced by the solar cell module into AC power, and the AC power output from the DC-AC converter is supplied to the customer by the utility pole. Can be distributed.

The solar cell module includes a module frame having an opening having an open center, a plurality of solar cell assemblies disposed in a connection with the opening, and a lower portion of the module frame to support the plurality of solar cell assemblies. And a fixing means for fixing each of the plurality of solar cell assemblies to the supporting network.

The solar cell assembly has a solar cell and a cell frame surrounding the edge of the solar cell, the solar cell has a protective film to protect the upper surface, the cell frame is the bottom of the solar cell And a sidewall portion extending upward from the flange portion to surround the edge of the solar cell, wherein the height of the sidewall portion is greater than the thickness of the solar cell, and an upper end of the sidewall portion is larger than the solar cell. It can protrude further upward.

According to the present invention, all the objects of the present invention described above can be achieved. Specifically, since a plurality of solar cell modules are installed between the distribution poles, and the power produced by the solar cell modules can be supplied to the customer through the distribution poles, the solar power can be efficiently distributed. have.

In addition, since the power produced by the solar cell module can be easily supplied to the surrounding customers by the distribution poles, the microgrid system can be efficiently configured.

1 is a perspective view illustrating a photovoltaic power generation and distribution system facility using a telephone pole for distribution according to an embodiment of the present invention.
2 is a block diagram showing the system configuration of the facility shown in FIG.
3 is a perspective view of the solar cell module shown in FIG. 1.
4 is an exploded perspective view of a main part of the solar cell module illustrated in FIG. 3.
FIG. 5 is an enlarged plan view illustrating a portion of one solar cell assembly in the solar cell module illustrated in FIG. 3.
FIG. 6 is a perspective view of the solar cell assembly shown in FIG. 4.
FIG. 7 is a cross-sectional view of the solar cell assembly shown in FIG. 4.
8 is a view showing another example of the fixing method of the solar cell assembly shown in FIG.
9 is a side view showing a solar module device according to another embodiment of the present invention.
FIG. 10 is a perspective view of the solar module unit shown in FIG. 9.
FIG. 11 is a front view of the solar module unit shown in FIG. 9.

1 and 2 illustrate a perspective view and a block diagram of a photovoltaic power generation and distribution system using a telephone pole for power distribution according to an embodiment of the present invention, respectively. 1 and 2, the photovoltaic power generation and distribution system 100 using the telephone poles for power distribution according to an embodiment of the present invention includes a plurality of power poles for power distribution 110 and a plurality of power poles for power distribution 110. The solar cell module device is installed in the neighboring two distribution poles 110 of the).

Each of the plurality of power poles 110 for power distribution is installed so that the distribution line 111 is extended to supply electricity produced at the power plant to the customer, and thus, a detailed configuration thereof will be omitted. The telephone pole 110 for power distribution includes a power distribution unit 115 for distributing electric power supplied through the power distribution line 111 to a consumer. The power distribution unit 115 is electrically connected to the DC-AC converter 195 to supply AC power supplied through the DC-AC converter 195 to the customer. A solar module device is installed in two adjacent power distribution poles 110 among the plurality of power distribution poles 110.

The photovoltaic module device includes two supporters 120 installed on each of the plurality of distribution poles 110 and two support poles 110 of the plurality of distribution poles 110 among the plurality of distribution poles 110, respectively. The connection cable 130 connecting the earth 120, the plurality of solar cell modules 150 coupled to the connection cable 130, and the direct current power produced by the plurality of solar cell modules 150 And a DC-AC converter 195 for converting to AC power.

The supporter 120 is installed on each of the plurality of power poles 110 for power distribution, and one end of the connection cable 130 is coupled to the supporter 120 to support the connection cable 130. In the present embodiment, it is described that the DC-AC converter 195 is installed in the support 120. In this embodiment, the support 120 is described to be installed to be fixed to the top of the telephone pole 110 for distribution, which is a plurality of solar cell modules 150 coupled to the connection cable 130 is not interfered with other structures. So that it is placed on the top as much as possible. However, the support 120 may be installed so as to be located other than the top of the telephone pole 110 for power distribution.

The connection cable 130 extends between neighboring two distribution poles 110, and both ends of the connection cable 130 are connected to two supporters 120 installed on each of the corresponding distribution poles 110. Combined to be fixed. The plurality of solar cell modules 150 are coupled to the connection cable 130, and are also electrically connected to the plurality of solar cell modules 150 coupled thereto. The connection cable 130 supports the plurality of solar cell modules 150 and supplies DC power produced by the plurality of solar cell modules 150 to the DC-AC converter 195.

The plurality of solar cell modules 150 are coupled to the connection cable 130 such that the plurality of solar cell modules 150 are arranged in a line between two adjacent power poles 110. 3 and 4, the solar cell module 150 is fixed to the module frame 160, the plurality of solar cell assemblies 170, and the lower portion of the module frame 160, thereby providing a plurality of solar cell cells. A support network 180 supporting the assemblies 170 from below, a plurality of fixing means 190 for fixing each of the plurality of solar cell assemblies 170 to the support network 180 individually, and a connection cable It is provided with a cable connection portion 140 is coupled to 130. The plurality of solar cell modules 150 produce direct current power using conventional photovoltaic principles. DC power produced by the plurality of solar cell modules 150 is supplied to the DC-AC converter 195 through the connection cable 130.

The module frame 160 is a frame member having an opening 161 open to the center portion, and is described as being rectangular in the present embodiment, but the present invention is not limited thereto. The plurality of solar cell assemblies 170 are disposed in the opening 161 of the module frame 160, and the support network 180 is fixed to the lower portion of the module frame 160 to fix the plurality of cell assemblies 170. Support. Although not shown, the module frame 160 has a wiring structure that is electrically connected to the plurality of solar cell assemblies 170 and the connection cable 130.

The plurality of solar cell assemblies 170 are spaced apart from each other in the region of the opening 161 of the module frame 160. The plurality of solar cell assemblies 170 are supported without falling down by the backing net 180. Each of the plurality of solar cell assemblies 170 is fixed so as not to move by the fixing means 190. 6 shows a solar cell assembly 170 as a perspective view and FIG. 7 shows a solar cell assembly 170 as a cross sectional view. 6 and 7, the solar cell assembly 170 includes a solar cell 171 and a cell frame 175 surrounding an edge of the solar cell 171.

The solar cell 171 is a solar cell that is commonly used, the protective film 172 is located on the upper surface, the support plate 173 of the resin material of the support structure is located on the lower surface.

The cell frame 175 is a frame member that surrounds the edge of the solar cell 171, and extends upward from the flange portion 176 and the flange portion 176 to support the solar cell 171 under the solar cell 171. It has a side wall portion 178 surrounding the edge of the). Although not shown, a terminal positioned on the bottom surface of the solar cell 171 and an electric wire extending from the terminal may be exposed through the opening 177 formed in the flange 176. In the state where the cell frame 175 and the solar cell 171 are coupled, the height of the side wall portion 178 is increased so that the top of the side wall portion 178 protrudes more upward than the top surface of the solar cell 171. It is set larger than the thickness of 171. Accordingly, the protection film 172 of the solar cell 171 is prevented from being damaged by the fixing means 190. A plurality of drain holes 179 are formed at a portion of the side wall portion 178 protruding upward from the solar cell 171. Through the drains 179, the water in the cell frame 175 can be drained quickly without accumulation.

The backing net 180 is fixedly coupled to the bottom surface of the module frame 160 so as to support the plurality of solar cell assembly 170 below. The hole of the backing net 180 is smaller in size than the solar cell assembly 170. The backing net 180 preferably has sufficient strength to support the plurality of solar cell assembly 170.

The plurality of fixing means 190 are a plurality of fixing strings, such as fishing lines, both ends of the solar cell assembly 170 is fixed by being tied to the backing net 180. Although not shown, a plurality of mounting grooves on which the fixing means 190 may be mounted may be formed at an upper end of the cell frame 175. It is preferable that the plurality of fixing means 190 passes over one solar cell assembly 170 in two or three directions in the horizontal and vertical directions, respectively.

As described above, since the plurality of solar cell assemblies 170 are stably arranged to be spaced apart from each other, air is circulated and passed between the cell assemblies 170 to prevent heat dissipation, drainage, and wind load avoidance and failure. It provides advantages such as ease of cell exchange.

The cable connection unit 140 couples the solar cell module 150 with the connection cable 130. The cable connection unit 140 is fixed to the module frame 160 and extends along the center of the module frame 160. The cable connection part 140 is a hollow member, and the connection cable 130 passes through the inner passage of the cable connection part 140.

The DC-AC converter 195 converts the DC power produced by each of the plurality of solar cell modules 150 transmitted through the connection cable 130 into AC power to supply the customer. Since the DC-AC converter 195 is a configuration of a conventional inverter for converting DC power into AC power, a detailed description thereof will be omitted. In this embodiment, the DC-AC converter 195 is described as being installed in the support 120, the present invention is not limited thereto.

8 illustrates another embodiment in which the solar cell assembly 170 is fixed to the backing net 180. 8 is a view showing the back of the solar cell assembly 170. Referring to FIG. 8, the bottom surface of the flange portion 176 of the cell frame 175 of the solar cell assembly 170 includes a plurality of horizontal and vertical lines for coupling with each of the plurality of horizontal and vertical lines constituting the support network 180. Couplings 379 are coupled. The coupler 379 may be secured to the cell frame 175 by fastening means such as screws as an embodiment of the coupling means of the present invention.

9 is a side view of a solar module device according to another embodiment of the present invention. Referring to FIG. 9, the photovoltaic module device includes a support tool (120 of FIG. 1) installed on each of the plurality of power poles (110 of FIG. 1) and a plurality of power poles (110 of FIG. 1). Coupled to two connection cables 430a and 430b connecting two support devices (120 in FIG. 1) respectively installed in two adjacent power distribution poles (110 in FIG. 1) and two connection cables 430a and 430b. A plurality of solar cell module unit 450, and a DC-AC converter (195 of FIG. 2) for converting the DC power produced by the solar cell module unit 450 to AC power.

The two connection cables 430a and 430b include a first connection cable 430a and a second connection cable 430b for supporting the plurality of solar cell module units 450, and the plurality of solar cell module units 450 The produced direct current power is supplied to a DC-AC converter (195 in FIG. 2).

The first connection cable 430a extends substantially horizontally between neighboring double distribution poles 110 of FIG. 1, and both ends of the first connection cable 430a have corresponding double distribution poles 110 of FIG. 1. Are fixed to two supports (120 of FIG. 1) installed in each of the two supports. The plurality of solar cell module units 450 are coupled to the first connection cable 430a, and the DC power produced by the plurality of solar cell module units 450 by the first connection cable 430a is converted into a DC-AC converter. 195 of FIG. 2.

The second connection cable 430b is positioned below the first connection cable 430a and extends substantially in parallel with the first connection cable 430a. Both ends of the second connection cable 430b are coupled to be fixed to two supports (120 of FIG. 1) installed on each of the corresponding double distribution poles (110 of FIG. 1). The plurality of solar cell module units 450 are coupled to the first connection cable 430a. In the present exemplary embodiment, the DC power produced by the solar cell module unit 450 is transferred to the DC-AC converter 195 of FIG. 2 by the first connection cable 430a. However, the second connection cable ( DC power produced in the solar cell module unit 450 by 430b may be configured to be transferred to the DC-AC converter 195 of FIG. 2, which is also within the scope of the present invention.

The solar cell module unit 450 is supported by two connection cables 430a and 430b and generates direct current power using sunlight. The solar cell module unit 450 is shown in FIG. 10 as a perspective view and in FIG. 11 as a front view. 10 and 11, the solar cell module unit 450 includes a module mounting structure 460, a plurality of solar cell modules 490 installed on the module mounting structure 460, and a module mounting structure 460. It is provided with a counterweight member 495 installed in.

The module mounting structure 460 is a generally truss-shaped structure comprising a central shaft 461, two first extension rods 481 coupled to the central shaft 461, and two coupled to the central shaft 461. Second extension rod portions 483, a first coupling rod portion 470 connecting two first extension rod portions 481, and a second coupling connecting two second extension rod portions 483. A cable coupling shaft to which the rod portion 475, the two coupling rod portions 480 connecting the first coupling rod portion 470 and the second coupling rod portion 475, and the second coupling cable 430b are coupled. 485.

The center shaft 461 is a hollow shaft extending in a straight line. The first connecting cable 430a is coupled to the center shaft 461 while the first connecting cable 430a passes through the center shaft 461. Two first extension rod portions 481 and two second extension rod portions 483 are rotatably coupled about the central shaft 461 at both ends of the rotational center shaft 461.

Each of the two first extension rods 481 extends radially from the center shaft 461 from both ends of the center shaft 461, and is coupled to the center shaft 461 rotatably about the center shaft 461. do. The two first extension bar portions 481 extend inclined downward from the central shaft 461. The first coupling rod portion 470 is rotatably coupled to the ends of the two first extension rod portions 481. The two first extension bar portions 481 are provided with a module holder 482 to which the solar cell module 490 is fixed. In the present embodiment, the first extension bar portion 481 is described as rotatably coupled to the central shaft 461, but may alternatively be a structure fixed so as not to rotate, which is also within the scope of the present invention.

Each of the two second extension rods 483 (only one is shown in the figure) extends from both ends of the center shaft 461 in the radial direction of the center shaft 461 and is rotatable about the center shaft 461. Is coupled to the central shaft 461. The two second extension bar portions 483 extend inclined from the central shaft 461 to one side below (the opposite side of the first extension rod portion 481). Accordingly, the first extension rod portion 481 and the second extension rod portion 483 extend downwardly from the center shaft 461, and the two extension rod portions 481 and 483 are extended to the center shaft 461. By rotating so as to open or narrow with respect to each other, the angle between the two extension rod portions 481 and 483 is changed. A second coupling rod portion 475 is rotatably coupled to the ends of the two second extension rod portions 483. In the present embodiment, the second extension bar portion 483 is described as rotatably coupled to the center shaft 461, but may alternatively have a structure fixed so as not to rotate, which is also within the scope of the present invention.

The first coupling rod portion 470 extends in parallel with the central shaft 461, and both ends of the first coupling rod portion 470 are rotatably coupled to the two first extension rod portions 481, respectively. In addition, two connecting rods 480 are rotatably coupled to the first coupling rod 470. In the present embodiment, the first coupling bar portion 470 and the two first extension rod portion 481 will be described as rotatably coupled, otherwise it may be a structure fixed so as not to rotate, this is also the scope of the present invention It belongs to.

The second coupling rod portion 475 extends in parallel with the central shaft 461, and both ends of the second connecting rod 475 are rotatably coupled to the two second extension rod portions 483, respectively. In addition, two connection bar portions 480 are rotatably coupled to the second coupling rod portion 475. In the present embodiment, the second coupling bar portion 475 and the two second extension rod portion 483 will be described as rotatably coupled, but otherwise may be a structure fixed so as not to rotate, this is also the scope of the present invention It belongs to.

Each of the two connecting rods 480 is rotatably coupled to the first coupling rod portion 470 and the second coupling rod portion 475 or the first extension rod portion 481 and the second extension rod portion 483. do. That is, both ends of the connecting rod 480 is rotatable to the first coupling rod portion 470 and the second coupling rod portion 475 or the first extension rod portion 481 and the second extension rod portion 483. Combined. The length of the connecting rod portion 480 is variable in response to the angular change between the two extending rod portions 481 and 483. To this end, in the present embodiment, the connecting rod 480 includes a central tube member 484 and two projecting members 486 and 487 which are sleeveably coupled to both ends of the central tube member 484. The cable coupling shaft 485 is fixed to the central tube member 484, and the ends of each of the two projection members 486 and 487 are rotatable to the first coupling rod portion 470 and the second coupling rod portion 475. Combined. In the present embodiment, in order to vary the length of the connecting rod 480, it is described that the two projecting members 486, 487 are configured to be mounted on the both ends of the center tube member 484 so that it can be projected, but the present invention is The present invention is not limited thereto, and other structures for allowing the length of the connection bar 480 to be variable are also possible, which is also within the scope of the present invention. In this embodiment, each of the two connecting rods 480 is described as rotatably coupled to the first coupling rod 470 and the second coupling rod 475, but otherwise, the structure is fixed so as not to rotate. It is also possible to fall within the scope of the present invention.

The cable coupling shaft 485 is a hollow shaft, which extends in parallel with the central shaft 461, and is fixed to each central tube member 481 of the two connecting rods 480. The second connection cable 430b passes through the cable coupling shaft 485, and the second connection cable 430b is coupled to the second coupling shaft 485.

The plurality of solar cell modules 490 are fixed to the module holder 482 of the module installation structure 460. The solar cell module 490, also called a solar module, has a flat plate shape, and thus, a detailed description thereof will be omitted. The inclination of the solar cell module 490 is generally the same as the first extension bar part 481, and may change according to the rotation of the first extension bar part 481 to correspond to a change in the altitude of the sun. In the present embodiment, the solar cell module 490 is shown as two in the figure, three or more or only one may be installed, which is also within the scope of the present invention.

The counterweight member 495 is installed in the module mounting structure 460 so as to be positioned opposite the solar cell modules 490 with the center shaft 461 interposed therebetween. The left and right balance of the solar cell module unit 450 is balanced by the counterweight member 495, so that an uneven load is applied to the telephone pole.

Although not shown, the solar cell module unit 450 may further include a driving motor for rotating the first and second extension bar portions 481 and 483 with respect to the center shaft 461.

In the field battery module unit 450, the first and second extension rods 481 and 483 rotate in opposite directions to change the inclination of the solar cell module 490, and the length of the connection rod unit 480 is increased. The height difference between the center shaft 461 and the cable coupling shaft 485 (ie, the distance between the center shaft 461 and the cable coupling shaft 485) changes. In order to cope with the change in the height difference between the center shaft 461 and the cable coupling shaft 485, it will be described that the second connection cable 430b is formed longer than the first connection cable 430a in this embodiment. Alternatively, the first connection cable 430a may be formed longer than the second connection cable 430b, which is also within the scope of the present invention.

Although the present invention has been described through the above embodiments, the present invention is not limited thereto. The above embodiments may be modified or changed without departing from the spirit and scope of the present invention, and those skilled in the art will recognize that such modifications and changes also belong to the present invention.

100: photovoltaic power generation and distribution system 110: telephone pole for distribution
120: support 130: connection cable
150: solar cell module 150: solar cell module
160: module frame 170: cell assembly
171: solar cell 172: protective film
175: cell frame 179: drain
180: support network 190: fixing means
195: DC-AC converter 379: coupler
430a: first connection cable 430b: second connection cable
450: solar cell module unit 460: module mounting structure
490: solar cell module 495: counterweight member

Claims (16)

A plurality of power poles for supporting a power distribution line and for distributing AC power supplied through the power distribution line to a customer; And
It includes a photovoltaic module device that is installed on the two poles of the plurality of distribution poles of the plurality of distribution poles
The photovoltaic module device includes at least one solar cell module for generating direct current power using solar light, and a connection cable connected between the two distribution poles and the at least one solar cell module coupled thereto. , The photovoltaic power generation and distribution system for distributing the power produced by the solar cell module through the telephone pole for power distribution. The method according to claim 1,
The photovoltaic module device further includes a DC-AC converter for converting DC power produced by the solar cell module into AC power.
The AC power output from the DC-AC converter is distributed to the customer by the telephone pole for power distribution. The method according to claim 2,
The solar module device, the solar power generation and distribution system further comprises a support that is installed on the telephone pole for the distribution and the connection cable is fixed. The method according to claim 3,
The DC-AC converter is a solar power generation and distribution system installed in the support. The method according to claim 1,
The solar cell module includes a module frame having an opening having an open center, a plurality of solar cell assemblies disposed in a connection with the opening, and a lower portion of the module frame to support the plurality of solar cell assemblies. And a fixing means for fixing each of the plurality of solar cell assembly to the supporting network. The method according to claim 5,
The solar cell assembly is a solar cell and a photovoltaic power generation and distribution system having a cell frame surrounding the edge of the solar cell. The method according to claim 6,
The solar cell is provided with a protective film to protect the upper surface,
The cell frame includes a flange portion for supporting a lower surface of the solar cell, and a sidewall portion extending upward from the flange portion to surround the edge of the solar cell,
The height of the side wall portion is greater than the thickness of the solar cell, so that the top of the side wall portion protrudes more than the solar cell cell. The method according to claim 7,
A photovoltaic power generation and distribution system in which a drain hole is formed at a portion of the side wall portion protruding upward from the solar cell. The method according to claim 1,
The solar module device includes at least one module mounting structure in which the at least one solar cell module is installed and coupled to the connection cable, and is coupled between the two distribution poles and coupled with the at least one module mounting structure. The solar power generation and distribution system further comprising an additional connection cable. The method according to claim 9,
The module installation structure,
A central shaft extending in parallel with the connecting cable;
A first extension rod part extending obliquely downward from the center shaft in a radial direction and rotatably coupled to the center shaft,
The at least one solar cell module is installed on the module installation structure so as to rotate with the first extension bar portion, the tilt of the solar power generation and distribution system. The method according to claim 10,
The module installation structure,
A second extension rod part which extends obliquely downward from the center shaft in the radially opposite direction and is rotatably coupled to the center shaft;
And a connection rod portion rotatably connected to each of the first extension rod portion and the second extension rod portion and having a variable length. The method according to claim 11,
The connecting rod portion is a solar power generation and power distribution system having a central tube member and two projecting members that are sleeveably coupled to both ends of the center tube member. The method according to claim 11,
The first extension rod portion and the second extension rod portion is a plurality,
The module installation structure,
A first coupling rod portion coupled to and coupled to the plurality of first extension rods;
And a second coupling rod portion coupled to the plurality of second extension rod portions. The method according to claim 11,
The connecting cable is coupled to the central shaft, the additional connecting cable is coupled to the connecting rod,
And one of the connection cable and the additional connection cable is formed longer than the other. The method according to claim 9,
The at least one solar cell module is installed in the module installation structure to be located on one side with respect to the connection cable,
The photovoltaic module device further comprises a counterweight member installed on the module installation structure such that the connection cable is disposed on the opposite side of the at least one solar cell module. The method according to claim 9,
The module installation structure,
A central shaft extending in parallel with the connecting cable;
A first extension rod part fixedly coupled to the center shaft to be inclinedly extended downwardly from the center shaft in a radial direction;
A second extension rod part fixedly coupled to the center shaft to extend inclined downwardly from the center shaft to the other side downward;
A connecting rod portion connecting the first extension rod portion and the second extension rod portion;
The at least one solar cell module is installed on the module installation structure so as to be fixed to the first extension bar portion solar power generation and distribution system.