JP2018117405A - Photovoltaic power generation system and photovoltaic power generation system frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photovoltaic power generation system with increased area efficiency.SOLUTION: In frame units (42a,42b), solar cell modules (44a,44b) are mounted on mounting sections (18a, 18b) of frames (10a,10b), and in a plurality of adjacent frames (10a, 10b), height (H2) of an end (38b) on the other frame (10a) side in the mounting section (18b) of one frame (10b) is more than height (H1) of an end (40b) on the other frame (10b) side of the mounting section (18a) of the other frame (10a).SELECTED DRAWING: Figure 3

Description

  The present invention relates to a solar power generation system having a plurality of mounts on which solar cell modules are placed, and a stand for a solar power generation system.

  Conventionally, a gantry is used to support a solar cell module including a plurality of solar cell panels. A solar cell module and a gantry form a gantry unit, and a large number of gantry units are installed in an installation section to constitute a solar power generation system. And the solar cell module of the gantry unit is inclined and arranged so as to increase in height from the south side to the north side in the south direction in order to increase power generation efficiency (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2016-214063

  In a solar power generation system, in order to increase electric output, it is necessary to install a large number of solar cell modules in an installation section having a certain area. In recent years, overloading solar power generation systems that provide higher electrical output than conventional power conditioners have been proposed for power conditioners with rated output capacities, increasing the number of solar cell modules per unit area of the installation compartment, There is an increasing need to increase area efficiency.

  However, in the case where a plurality of gantry units are arranged side by side, if the shadow of one gantry unit is applied to the other solar cell module, the power generation efficiency is lowered. For this reason, it is necessary to arrange the two gantry units at a considerable distance, the number of gantry units that can be arranged in a fixed area of the installation area decreases, the number of solar cell modules per unit area decreases, The area efficiency of the power generation system is reduced.

  An object of the present invention is to provide a photovoltaic power generation system with increased area efficiency.

  In the first embodiment of the present invention, the photovoltaic power generation system has a plurality of gantry units arranged in parallel with each other, and the gantry unit converts the solar light into electric power, and the solar cell module. A plurality of the gantry that are adjacent to each other, and the mounting unit has a height that increases from one gantry side to the other gantry side. And the height of the one cradle side end of the previous mounting portion of the other gantry is equal to or higher than the height of the other cradle side end of the previous mounting portion of the one gantry. is there.

  In this embodiment, in a plurality of adjacent gantry, the height of one gantry side end portion of the mounting portion of the other gantry is equal to or higher than the height of the other gantry side end portion of the mounting portion of one gantry. ing. For this reason, even if both gantry units are arranged close to each other, the shadow of one gantry unit is not cast on the solar cell module of the other gantry unit, and many gantry units are arranged and installed in the installation section. The number of solar cell modules per unit area of the partition can be increased, and the area efficiency of the photovoltaic power generation system can be increased.

In the second embodiment of the present invention, the inclination angle of the mounting portion with respect to the horizontal plane is not less than 5 degrees and not more than 10 degrees.
In this embodiment, since the inclination angle of the mounting portion with respect to the horizontal plane is 5 degrees or more, the inclination angle of the solar cell module is also 5 degrees or more, and the power generation efficiency of the solar cell module is not lowered so much. Sufficient electrical output can be ensured by the effect of increasing electrical output by increasing the number of solar cell modules per unit area of the compartment. Moreover, since the inclination angle of the mounting portion is 10 degrees or less, the height of the upper end portion of the mounting portion of the other mounting unit does not become too high, and a mounting base with sufficient strength is manufactured at low cost. This makes it easy to attach the solar cell module to the mount.

In the third embodiment of the present invention, the plurality of adjacent frames are arranged in parallel with a predetermined clearance.
In this embodiment, since a predetermined clearance is formed between a plurality of adjacent frames, the solar cell module can be easily maintained by using the clearance. Furthermore, even if there is wind, the wind that has entered the lower side of the solar cell module from the upper end of the other gantry unit is released upward through the clearance, so that the wind The influence is not concentrated, and the snow can easily fall through the clearance even during snowfall, so that the influence of natural phenomena such as wind and snow can be reduced.

  In the fourth embodiment of the present invention, the pedestal for the photovoltaic power generation system has a placement portion on which the solar cell module is provided, and the placement portion described above is inclined with respect to a reference plane disposed in parallel to the horizontal plane. The inclination angle of the mounting portion with respect to the reference plane is not less than 5 degrees and not more than 10 degrees.

  In this embodiment, since the inclination angle of the mounting portion with respect to the horizontal plane is 5 degrees or more, the inclination angle of the solar cell module is also 5 degrees or more, and the power generation efficiency of the solar cell module does not decrease so much. It is possible to ensure output. In addition, since the inclination angle of the mounting portion is 10 degrees or less with respect to the horizontal plane, the height of the upper end portion of the mounting portion does not become too high, and a mount with sufficient strength can be manufactured at low cost. Thus, the solar cell module can be easily attached to the mount.

  In the photovoltaic power generation system of the present invention, area efficiency can be increased.

The side view which shows the mount system of 1st Embodiment of this invention. The perspective view which shows the mount frame of 1st Embodiment of this invention. The side view which shows the solar energy power generation system of 1st Embodiment of this invention. The top view which shows the solar energy power generation system of 1st Embodiment of this invention. The perspective view which shows the mount unit of 1st Embodiment of this invention. The top view which shows the pallet for people loading of 1st Embodiment of this invention. The top view which shows the solar energy power generation system of 2nd Embodiment of this invention.

With reference to FIG. 1 thru | or FIG. 6, the solar power generation system of 1st Embodiment of this invention is demonstrated.
With reference to FIG.1 and FIG.2, the mount system used for a solar power generation system is demonstrated.
With reference to FIG. 2, the gantry 10 constituting the gantry system will be described.

  As shown in FIG. 2, the gantry 10 includes an installation unit 12 installed in the installation section. In the installation part 12, the 1st thru | or 4th embedment part 14 which is embed | buried and fixed in the soil of an installation division is arrange | positioned. The first to fourth embedded portions 14 have a substantially cylindrical shape and are arranged substantially parallel to each other. In the installation unit 12, the reference plane C is set substantially orthogonal to the first to fourth embedded units 14.

  The gantry 10 has a mounting portion 18 on which the solar cell module is mounted. In the mounting part 18, the 1st and 2nd vertical bridge parts 20a and 20b are extended substantially mutually parallel. 1st thru | or 5th horizontal bridge part 22a, 22b, 22c, 22d, 22e is set to 1st and 2nd vertical bridge part 20a, 20b over the 1st vertical bridge part 20a and the 2nd vertical bridge part 20b. The bridges are constructed so as to be substantially orthogonal and substantially parallel to each other. The first horizontal bridge portion 22 a is disposed at the front end portions of the first and second vertical bridge portions 20 a and 20 b and forms the front end portion 24 of the placement portion 18. The fifth horizontal bridge portion 22e is disposed at the rear end portion of the first and second vertical bridge portions 20a and 20b, and forms the rear end portion 26 of the placement portion 18.

  The installation portion 12 is provided with a support portion 28 that supports the placement portion 18. In the support portion 28, a plurality of column portions 30 are extended from the first to fourth embedded portions 14, respectively. The first and second vertical bridge portions 20 a and 20 b are supported by the plurality of column portions 30. The first and second vertical bridge portions 20a and 20b are arranged so as to be inclined with respect to the reference plane C of the installation portion 12, and the first and second vertical bridge portions 20a and 20b from the reference plane C of the installation portion 12 are arranged. The separation distance up to 20b increases from the front end portion to the rear end portion of the first and second vertical bridge portions 20a, 20b. That is, the separation distance from the reference plane C of the installation unit 12 to the mounting unit 18 increases from the front end 24 to the rear end 26 of the mounting unit 18. The inclination angle α of the first and second vertical bridge portions 20a and 20b with respect to the reference plane C of the installation portion 12 is 5 degrees or more and 10 degrees or less, and the inclination angle α of the entire placement section 18 with respect to the reference plane C is It is 5 degrees or more and 10 degrees or less. In the present embodiment, the inclination angle α is set to approximately 6 degrees.

With reference to FIG. 1, a gantry system including a plurality of gantry 10 will be described.
As shown in FIG. 1, in the gantry system of the present embodiment, first to fourth gantry 10a, 10b, 10c, 10d are used. The 1st thru | or 4th mount frame 10a-10d has the 1st thru | or 4th installation parts 12a, 12b, 12c, 12d and the 1st thru | or 4th mounting parts 18a, 18b, 18c, 18d, respectively. .

  About the 1st and 2nd mounts 10a and 10b, when the 2nd mount 10b is arranged in parallel with respect to the 1st mount 10a, with respect to the 1st reference plane C1 of the 1st installation part 12a The second reference plane C2 of the second installation part 12b is disposed on substantially the same plane. The separation distance L2 from the second reference surface C2 of the second installation portion 12b to the front end 24b of the second placement portion 18b is the first distance from the first reference surface C1 of the first installation portion 12a. It becomes more than the separation distance L1 to the rear side edge part 26a of the 1 mounting part 18a. Further, the inclination angle α of the first and second mounting portions 18a and 18b with respect to the first and second reference planes C1 and C2 is not less than 5 degrees and not more than 10 degrees, and the first and second mounting portions 18a. , 18b are arranged on substantially the same plane. In the present embodiment, the inclination angle α is set to approximately 6 degrees.

Then, the front end 24 b of the second mounting portion 18 b is juxtaposed with the rear end 26 a of the first mounting portion 18 a through the clearance 50.
The second and third mounts 10b and 10c and the third and fourth mounts 10c and 10d also have the same relationship as the first and second mounts 10a and 10b.

A photovoltaic power generation system using a gantry system will be described with reference to FIGS.
With reference to FIG. 5, the gantry unit 42 constituting the photovoltaic power generation system will be described.
As shown in FIG. 5, in the gantry unit 42, the solar cell module 44 is placed on the placement portion 18 of the gantry 10. The solar cell module 44 is formed by a plurality of solar cell panels 46 that convert sunlight into electric power. The plurality of solar cell panels 46 are mounted and fixed on the side bridge portions 22a-22e. In this embodiment, a total of twelve solar panels are used, with three rows in the horizontal direction along the horizontal bridge portions 22a-22e and four levels in the vertical direction along the vertical bridge portions 20a, 20b. In addition, a solar cell panel 46 having a width of about 1.6 m and a length of about 1.0 m is used.

  As shown in FIGS. 5 and 6, the gantry unit 42 is attached with a dedicated personal loading pallet 56 used for maintenance of the solar cell module 44. The personal pallet 56 can be covered with the solar cell module 44, and various operations can be performed on the solar cell module 44 by riding on the human pallet 56 covered with the solar cell module 44. The support unit 28 of the gantry unit 42 may be provided with a holding mechanism that accommodates and holds the person-mounted pallet 56 when the person-mounted pallet 56 is not used.

With reference to FIG.3 and FIG.4, the solar energy power generation system comprised by the mount unit 42 is demonstrated.
As shown in FIG. 3, in the photovoltaic power generation system, first to fourth gantry units 42a, 42b, 42c, and 42d are used. The first to fourth gantry units 42a to 42d respectively include first to fourth gantry 10a to 10d and first to fourth solar cell modules 44a, 44b, 44c, and 44d.

  The first to fourth gantry units 42a to 42d are juxtaposed with each other. The first to fourth gantry units 42a to 42d may be juxtaposed in any direction, but in the present embodiment, they are juxtaposed in the north-south direction. Therefore, the front end and the rear end of the first to fourth placement portions 18a-18d are the first to fourth south end portions 38a, 38b, 38c, 38d and the first to fourth north sides, respectively. End portions 40a, 40b, 40c, and 40d are formed. In addition, the first to fourth solar cell modules 44a to 44d may be arranged in any direction, but in the present embodiment, the first to fourth solar cell modules 44a to 44d are inclined toward the south so that the height increases from the south side to the north side. Are arranged.

  Regarding the first and second gantry units 42a and 42b, the second gantry unit 42b is juxtaposed in the north-south direction with respect to the first gantry unit 42a. The second reference plane C2 of the second installation section 12b coincides with the first reference plane C1 of the first installation section 12a, and the first and second reference planes C1 and C2 are the horizontal plane G. It is almost parallel. And the height H2 of the south side edge part 38b of the 2nd mounting part 18b is more than the height H1 of the north side edge part 40a of the 1st mounting part 18a. In addition, the inclination angle α of the first and second placement portions 18a and 18b with respect to the horizontal plane G is 5 degrees or more and 10 degrees or less, and the first and second placement portions 18a and 18b are substantially in the same plane. Has been placed. For this reason, the inclination angle α of the first and second solar cell modules 44a and 44b with respect to the horizontal plane G is also 5 degrees or more and 10 degrees or less. In the present embodiment, the inclination angle α is set to approximately 6 degrees, and the upper end portion of the fourth gantry unit 42d has a height of approximately 2.5 m or less.

And the south side end part 38b of the 2nd mounting part 18b is arranged in parallel via the clearance 50 with respect to the north side edge part 40a of the 1st mounting part 18a. In this embodiment, the clearance 50 is set to approximately 50 cm.
The second and third gantry units 42b and 42c and the third and fourth gantry units 42c and 42d also have the same relationship as the first and second gantry units 42a and 42b.

  As shown in FIG. 4, in the present embodiment, in the installation section D, six first gantry units 42a are arranged side by side without providing a clearance in the east-west direction to form one array A1. The same applies to the second to fourth gantry units 42b to 42d, and a total of four arrays A1, A2, A3, and A4 are formed. As described above, in the present embodiment, the solar cell modules 44a-44b use the four-stage three-row solar cell panel 46. For this reason, 72 solar cell panels 46 are used in 4 rows and 18 rows per array, and a total of 288 solar cell panels 46 are used in 4 arrays. And the electrical output of a solar power generation system will be about 82 kw.

The solar power generation system of this embodiment has the following effects.
In the solar power generation system of the present embodiment, for the first and second gantry units 42a and 42b, the height H2 of the south end 38b of the second placement portion 18b is the north end of the first placement portion 18a. Since the height 40 of the portion 40a is greater than or equal to the height H1, even if the first gantry unit 42a and the second gantry unit 42b are arranged close to each other in the north-south direction, the shadow of the first gantry unit 42a is second. The solar cell module 44b is not hung. The second and third gantry units 42b and 42c and the third and fourth gantry units 42c and 42d are the same as the first and second gantry units 42a and 42b. When a conventional gantry unit is used for the installation section D of this embodiment, it is necessary to install the gantry unit at a considerable distance in the north-south direction, and it is the limit to form three arrays. For this reason, there are a total of 216 solar cell panels in 3 arrays, 4 stages and 18 rows, and the electrical output is about 62 kW. On the other hand, in this embodiment, a total of 288 sheets in 4 arrays, 4 stages and 18 rows, and an electrical output is about 82 kW. In this way, a large number of gantry units 42a-42d can be arranged in the installation section D to increase the number of solar cell modules 44a-44b per unit area of the installation section D, thereby increasing the area efficiency of the photovoltaic power generation system. It is possible to increase.

  In the solar power generation system of the present embodiment, the inclination angle α of each mounting portion 18a-18d with respect to the horizontal plane G is 5 degrees or more and 10 degrees or less, and the inclination angle α of the solar cell modules 44a-44d is also 5 degrees or more. It is 10 degrees or less. Here, the power generation efficiency of the solar cell module depends on the incident angle of sunlight, and the optimum inclination angle differs depending on the latitude, but in Japan, approximately 20 degrees is suitable, and the inclination angle is more than 20 degrees. As the value decreases, the power generation efficiency decreases. For this reason, in the conventional solar power generation system, the inclination angle of the solar cell module is generally set to about 15 degrees, and it has never been assumed to set the inclination angle to 10 degrees or less.

  In this embodiment, since the inclination | tilt angle (alpha) of the solar cell modules 44a-44d is 10 degrees or less, the electric power generation efficiency in each solar cell module 44a-44d falls. However, in the present embodiment, the inclination angle α of the solar cell modules 44a to 44d is 5 degrees or more, and the power generation efficiency is not so lowered. As described above, the plurality of gantry units 42a to 42b Arranged close to the north-south direction, the number of solar cell modules 44a-44b per unit area of the installation section D can be increased more than before, and the photovoltaic power generation system as a whole has a practically sufficient electrical output. It is possible to obtain. In addition, since the inclination angle α of the mounting portions 18a to 18d with respect to the horizontal plane G is 10 degrees or less, the upper end portion of the fourth mount 10d does not become too high. In particular, in this embodiment, the inclination angle α is Since it is set to approximately 6 degrees, the height of the upper end portion of the fourth gantry 10d is approximately 2.5 m or less. For this reason, it is possible to manufacture the mount 10d with sufficient strength at a low cost. In addition, when constructing a solar power generation system, construction can be carried out by a relatively simple and inexpensive method using a stepladder, etc., which can reduce construction costs and shorten the construction period. Yes.

  In the present embodiment, the inclination angle α is set to approximately 6 degrees, but the range of 5 degrees or more and 10 degrees or less depending on the installation status of the photovoltaic power generation system, for example, the latitude, the area and shape of the installation section, and the like. Can be set as appropriate.

  In the photovoltaic power generation system of the present embodiment, for the first and second gantry units 42a and 42b, the north end 40a of the first placement portion 18a and the south end 38b of the second placement portion 18b. A clearance 50 is formed between them. The second and third gantry units 42b and 42c and the third and fourth gantry units 42c and 42d are the same as the first and second gantry units 42a and 42b.

  In the photovoltaic power generation system, it is necessary to periodically investigate the solar cell modules 44a to 44d and to replace them in case of malfunction. Maintenance of the solar cell modules 44a-44d is indispensable because it is necessary to deal with troubles caused by fecal damage and the occurrence of hot spots due to fallen leaves from deciduous trees. In the present embodiment, at the time of maintenance, a ladder 50 is hung on the placement portions 18a-18d using the clearance 50, and the personal pallet 56 is covered on the solar cell modules 44a-44d on the ladder, so It is possible to get on the pallet 56 and perform various operations such as investigation and replacement of the solar cell modules 44a to 44d, removal of feces and fallen leaves. Thus, in the solar power generation system of this embodiment, it is possible to easily perform maintenance of the solar cell modules 44a to 44d through the clearance 50. Further, by using the dedicated personal loading pallet 56, it is possible to perform various operations safely on the solar cell modules 44a-44d without incurring failures such as damage to the solar cell modules 44a-44d. It has become.

  In this embodiment, the personal pallet 56 is used for maintenance, but may be used for mounting the solar cell modules 44a to 44d to the gantry 10a to 10d when the solar power generation system is constructed. .

  Furthermore, even when there is a wind, the wind that has entered from the high end of the fourth gantry unit 42d along the lower surface of the fourth solar cell module 44d has a clearance 50 between the mounting portions 18d-18a. Accordingly, the influence of wind does not concentrate at the lower end of the first gantry unit 42a. Even during snowfall, the snow piled up on the fourth solar cell module 44d easily falls via the clearance 50 between the fourth mounting portion 18d and the third mounting portion 18c. The same applies to the snow accumulated in the third and second solar cell modules 44c and 44b. Thus, in the photovoltaic power generation system of this embodiment, the influence of natural phenomena such as wind and snow is reduced.

  In this embodiment, the clearance 50 is set to approximately 50 cm. However, the installation status of the photovoltaic power generation system, for example, an increase in area efficiency due to a reduction in clearance and an improvement in ease of maintenance due to an increase in clearance. It is possible to set as appropriate in consideration of the whole.

With reference to FIG. 7, the photovoltaic power generation system of 2nd Embodiment of this invention is demonstrated.
As shown in FIG. 7, in the present embodiment, the installation section D has a parallelogram shape. According to the shape of the installation section D, four arrays A1-A4 are sequentially shifted in the east-west direction, and the first to fourth gantry units 42a-42d are arranged in a parallelogram as a whole. Furthermore, in this embodiment, in each array A1-A4, a clearance 52 is also formed between the plurality of gantry units 42a-42d arranged in parallel in the east-west direction. For this reason, the maintenance of the solar cell modules 44a to 44d can be performed more easily by using the clearance 52.

  DESCRIPTION OF SYMBOLS 10 ... Mount, 10a, 10b, 10c, 10d ... 1st thru | or 4th mount, 18 ... Mounting part, 18a, 18b, 18c, 18d ... 1st thru | or 4th mounting part, 38a, 38b, 38c, 38d ... 1st to 4th south side edge part, 40a, 40b, 40c, 40d ... 1st to 4th north side edge part, 42 ... Stand unit, 42a, 42b, 42c, 42d ... 1st to 4th stand Units 44a, 44b, 44c, 44d ... 1st to 4th solar cell modules, C ... reference plane, C1, C2, C3, C4 ... 1st to 4th reference planes, H1, H2 ... height, G … Horizontal plane, α… tilt angle.

Claims (4)

A photovoltaic power generation system having a plurality of gantry units arranged side by side,
The gantry unit is
A solar cell module for converting sunlight into electric power;
A gantry comprising a mounting portion on which the solar cell module is provided;
Have
In the plurality of frames that are adjacent to each other,
The mounting portion is inclined so that the altitude increases from one gantry side to the other gantry side,
The height of the one cradle-side end of the previous mounting portion of the other gantry is equal to or higher than the height of the other cradle-side end of the previous mounting portion of the one gantry.
Solar power system. The inclination angle of the mounting portion with respect to the horizontal plane is not less than 5 degrees and not more than 10 degrees.
The photovoltaic power generation system according to claim 1. The plurality of adjacent mounts are arranged side by side with a predetermined clearance,
The photovoltaic power generation system according to claim 1 or 2. A stand for a photovoltaic power generation system having a mounting portion on which a solar cell module is provided,
The placement section is inclined with respect to a reference plane arranged in parallel to a horizontal plane,
The inclination angle of the mounting portion with respect to the reference plane is not less than 5 degrees and not more than 10 degrees.
A stand for a solar power generation system.

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