TW201914202A - Solar power generation facility - Google Patents

Abstract

This solar power generation facility is provided with a plurality of concentrated solar power generation devices which are arranged in an installation area and of which the outline shape of the maximum dimensions of an array of each solar power generation device is rectangular. When the installation area is represented two-dimensionally in the X-direction and the Y-direction orthogonal to each other, the arrangement interval of the solar power generation devices in the X-direction and the Y-direction is not less than the length of the diagonal of the rectangle, and is limited within a predetermined range.

Description

Solar power generation equipment

The invention relates to a solar power generation device. The present application claims priority based on Japanese Patent Application No. 2017-163390, filed on A.

For example, the concentrating solar power generation device generates electricity by concentrating sunlight to a cell while performing the action of the sun (see, for example, Patent Document 1). This concentrating solar power generation device is suitable for a region with high sunshine and a lot of sunny days. In addition, such a concentrating solar power generation device is an array in which a concentrating solar power generation module of one unit, that is, a structure, is arranged in a row, and is arranged by a two-axis tracker. It rotates toward the azimuth and elevation. If the shadow of the array of one seat falls into the array of the other seat, light loss occurs, so that a large amount of land is opened at a sufficient interval. [Prior Technical Literature] Patent Literature

Patent Document 1: JP-A-2014-226025

A solar power generation device according to an aspect of the present invention includes a concentrating solar power generation device having a square shape having a maximum size and having a quadrangular shape in an array of the plurality of seats arranged in the installation region, the solar power generation device, In the case where the installation area is represented by two-dimensionally in the X direction and the Y direction which are orthogonal to each other, the arrangement interval between the X direction and the Y direction of the solar power generation device is equal to or longer than the length of the diagonal of the square. It is limited to the specified range.

[Problems to be Solved by the Invention] A solar power generation device comprising a concentrating solar power generation device using a large amount of land is set in the same place, for example, in terms of power generation per unit area. Compared with the case of a fixed crystal solar power module, it may not be advantageous in some aspects.

In view of the above, an object of the present invention is to increase the amount of power generation per unit area in a solar power generation facility composed of a concentrating solar power generation device.

[Effect of the present invention] According to the present disclosure, in a solar power generation facility composed of a concentrating solar power generation device, the amount of power generation per unit area can be increased. [Improvement of the embodiments] The gist of the embodiments of the present invention includes at least the following.

(1) A solar power generation apparatus comprising: a solar power generation device having a square shape in which an outline of a maximum size is quadrangular in a plurality of arrays arranged in an array in each of the arrays, and the solar power generation device In the case where the installation area is represented by two-dimensionally in the X direction and the Y direction which are orthogonal to each other, the arrangement interval between the X direction and the Y direction of the solar power generation device is equal to or longer than the length of the diagonal of the square. Restricted to the specified range.

In such a solar power generation apparatus, a plurality of photovoltaic power generation devices are brought close to each other, and interference of the array can be prevented between adjacent solar power generation devices. Further, it has been found that if the photovoltaic power generating devices are close to each other, light loss due to one array shadow falling into the other array occurs, but the arrangement interval is set to the length of the diagonal line. As described above, and within the predetermined range, the amount of power generation per unit area of the installation area can be increased.

In this way, in the solar power generation facility composed of the concentrating solar power generation device, the amount of power generation per unit area can be increased. In addition, the plurality of solar power generation devices are close to each other, whereby the entire device can be lightened, the cable can be shortened, and the maintenance of the equipment can be facilitated.

(2) In the solar power generation facility of (1), it is preferable that the total value of the arrangement intervals of the X direction and the Y direction falls within a range of 2 to 2.5 times the length of the diagonal line. In this case, more power generation can be obtained than in the case where a fixed type of wafer solar power generation module is covered in the same installation area.

(3) In the solar photovoltaic power generation apparatus of (1), preferably, in a case where the area of the installation area in the case where the arrangement interval is the length of the diagonal line is set as a reference value, the foregoing setting The interval is set such that the area becomes 1 to 1.56 times the aforementioned reference value. In this case, more power generation can be obtained than in the case where a fixed type of wafer solar power generation module is covered in the same installation area.

(4) In the photovoltaic power generation apparatus according to any one of (1) to (3), the arrangement center of the photovoltaic power generation device closest to each of the X direction and the Y direction is calculated from the outer end of the installation region. The distance may be 1/2 of the aforementioned arrangement interval. In this case, the portion to the edge of the outer end of the set region can be set to the minimum area.

[Details of Embodiments] Hereinafter, a solar power generation apparatus according to an embodiment of the present invention will be described with reference to the drawings.

"Solar power generation device" Fig. 1 and Fig. 2 are perspective views of a concentrating solar power generation device that views one seat from the light receiving surface side and the back surface side, respectively. In Fig. 1, the photovoltaic power generator 10 includes, for example, an array 1 which is continuous on the upper side and is divided into left and right shapes on the lower side, and a tracker 2 which is a supporting device. The array 1 is configured by arranging the concentrating solar power generation modules 1M side by side on the gantry 11 (FIG. 2) on the back side. In the example of FIG. 1, the array 1 is configured as, for example, an aggregate of a total of 200 concentrating solar power generation modules 1M. When the maximum size of the entire array 1 is set to "a" and "b" in Fig. 1, it can be said that the outline shape of the array is a square in which a and b are two sides.

The tracker 2 includes a support 21, a base 22, a 2-axis drive unit 23, and a horizontal shaft 24 (FIG. 2) as a drive shaft. The support 21 has a lower end fixed to the base 22 and a second-axis drive unit 23 at the upper end. Adjacent to the lower end of the strut 21, a box 13 (Fig. 2) for electrical connection or electrical circuit storage is provided. The 2-axis driving portion 23 is located adjacent to the center of the square of the array 1.

In Fig. 2, the base 22 is firmly embedded in the ground to the extent that it is visible only above. In a state where the foundation 22 is buried in the ground, the pillar 21 is vertical and the horizontal shaft 24 is horizontal. The two-axis drive unit 23 can rotate the horizontal axis 24 in two directions of the azimuth angle (the angle at which the strut 21 is the central axis) and the elevation angle (the angle at which the horizontal axis 24 is the central axis). The horizontal shaft 24 is fixed so as to be orthogonal to the reinforcing material 12 that is fixed by fixing the gantry 11. Therefore, if the horizontal axis 24 is rotated in the azimuth or elevation direction, the array 1 is also rotated in this direction.

1 and FIG. 2, the tracker 2 of the array 1 is supported by one pillar 21, but the configuration of the tracker 2 is not limited thereto. The point is that the tracker 1 can be supported by the array 1 so as to be rotatable on two axes (azimuth and elevation). However, in order to rotate it in a well-balanced manner, the center of the rotation is preferably the center of the array 1.

Array 1 will be vertical as shown in Figure 1, Figure 2, before dawn and sunset. During the day, the two-axis drive unit 23 operates so that the light-receiving surface of the array 1 always faces the sun, and the array 1 follows the sun. FIG. 3 is a perspective view showing the posture of the array 1 facing the sun as an example. Further, for example, if it is a mid-day time near the equator, the array 1 will face the sun on the light-receiving surface and become a horizontal posture. At night, for example, the light receiving surface of the array 1 faces the ground and becomes a horizontal posture.

<<Configuration of Complex Blocks>> FIG. 4 is a schematic bird's-eye view of the arrangement interval of the array 1 . As shown in the figure, the two directions orthogonal to each other on the ground are defined as the X direction and the Y direction. For example, assume that the array 1 of the four seats is in a horizontal posture. In the horizontal posture, the adjacent arrays 1 are closest to each other. First, focusing on the array 1 located at the center, the outline shape of the array 1 is a quadrangle as described above, and the length of the diagonal d is set to Ld. This length Ld is set as the arrangement interval of the array 1 in the X direction and the Y direction of the drawing. In addition, strictly speaking, a certain margin will be reserved, and the arrangement interval is slightly larger than the length of the diagonal line, but the difference is slightly (for example, a large number of %), so the arrangement interval is diagonal d Length Ld to illustrate.

Fig. 5 is a bird's-eye view of the array 1 of the horizontal posture of the four seats arranged in the manner of Fig. 4, and their movable ranges are shown as circles of two-dot chain lines (the same applies hereinafter). The arrangement interval of the array 1 is set to the length Ld of the diagonal d, whereby the movable range does not overlap.

Fig. 6 is a bird's eye view of the array 1 of four seats arranged in the manner of Fig. 4 in a state where the posture is not horizontal (the array 1 is tilted in the direction of the sun). The circle of the double-dot chain line is the same as that of Fig. 5. As shown in the figure, the movable range of the array 1 overlooking this time becomes narrower than the case of FIG.

In addition, FIG. 7 is a schematic bird's-eye view of a state in which the azimuth angle of the array 1 is changed from the state of FIG. That is to say, if the arrangement interval of the array 1 is taken in accordance with the method of FIG. 4, the arrays following the solar array 1 will not interfere with each other.

"An example of a solar power generation device" Fig. 8 is a schematic bird's-eye view of a solar power generation facility (solar power generation station) 100 in which an array 1 of 34 seats is arranged in the installation area E in the manner shown in Fig. 4 . For example, suppose the X direction of the graph is the east-west direction, and the Y direction is the north-south direction. In Fig. 8, the arrangement interval of the adjacent arrays 1 is the length Ld of the diagonal of the array 1 in the east-west direction and the north-south direction. Further, for example, a fence is provided at the outer end of the installation area E, and the arrangement interval between the east-west direction and the north-south direction from the arrangement center of the array 1 on the side of the fence to the outer end is Ld/2. In this case, the portion to the edge of the outer end of the installation region E can be set to the minimum area. Further, for example, a power conditioner 3 that converts the output of each array 1 into AC power is provided in the center of the installation area E.

<<Arrangement Interval or Area of Installed Area and Annual Power Generation Per Unit Area>> Next, how the annual power generation amount changes will be described when the arrangement interval of the array 1 is equal to or longer than the diagonal length of the array 1. FIG. 9 shows an area (m ² ) and a unit area per unit area of the set area E by simulation for a certain number of arrays 1 while changing the arrangement intervals of the X direction (the east-west direction) and the Y direction (the north-south direction). A graph showing the relationship between the annual power generation amount (hereinafter also referred to as power generation amount) [kWh/m ² /y].

In Fig. 9, the point of the CPV1 is the case where the arrangement interval in the X direction and the Y direction is the length Ld of the diagonal of the array 1, and the amount of power generation per unit area becomes maximum. In this example, at the point of CPV1, the area of the installation area is 8960 [m ² ], and the amount of power generation per unit area is 187.5 [kWh/m ² /y]. Starting from this, try to increase the configuration interval slowly so that the area of the set area increases. If the area of the set area is increased, the arrangement interval will increase, so that the light loss caused by one array shadow falling into other arrays will be reduced. However, the area of the installation area will increase, so the amount of power generation per unit area will decrease. Therefore, it is known that the land is used without waste, and the power generation per unit area is maintained at a high level, with an appropriate configuration interval.

For example, at the point of CPV2, the area of the installation area is 14000 [m ² ], and the amount of power generation per unit area is 127.7 [kWh/m ² /y]. The arrangement interval from the point of the CPV1 to the point of the CPV2 is such that the total value of the arrangement interval in the X direction and the arrangement interval in the Y direction is 2 × Ld in CPV1, and gradually changes in the manner in which CPV2 is 2.5 × Ld. In other words, the total value of the respective arrangement intervals in the X direction and the Y direction between CPV1 and CPV2 falls within the range of 2 to 2.5 times the length Ld of the diagonal.

Further, the change in the area of the installation region was 8960 [m ² ] at CPV1 and 14000 [m ² ] at CPV2, so it was 14000/8960 = 1.56 times. That is, if the setting area of the CPV1 in the case where the arrangement interval is the length Ld of the diagonal is set as the reference value (1 time), the setting interval is set such that the area of the setting area from CPV1 to CPV2 changes. (increase) will be 1 to 1.56 times the reference value. In addition, for reference only, at the point of CPV3, the area of the installation area is 29260 [m ² ], and the power generation amount is 63.5 [kWh/m ² /y].

Here, in consideration of an appropriate arrangement interval for maintaining the power generation amount per unit area at a high level for the aforementioned use of land without waste, the area of the fixed crystal solar power generation module is matched with the area of the installation area. The amount of power generation in the case of being efficiently spread is set as a comparison target, and more than 10% of the amount of power generation is targeted. The level of this power generation is the level of the double-point chain line in the horizontal direction in the chart, and CPV2 is at this level. Therefore, the area of the preferred installation area and the amount of power generated per unit area will become a range of oblique lines.

"Summary" As described above, in such a solar power generation apparatus, when the array of the seats of the photovoltaic power generation device has the largest size, the outline shape is a quadrangle, and the mutually orthogonal X and Y directions are two-dimensional. In the case of the installation area, the arrangement interval in the X direction and the Y direction is equal to or greater than the length of the diagonal of the square, and is limited to a predetermined range.

In the solar power generation apparatus, the plurality of photovoltaic power generation devices are brought close to each other, and the interference of the array can be prevented between adjacent solar power generation devices. Further, it has been found that if the photovoltaic power generating devices are close to each other, light loss due to one array shadow falling into the other array occurs, but the arrangement interval is set to the length of the diagonal line. As described above, and within the predetermined range, the amount of power generation per unit area of the installation area can be increased.

In this way, in the solar power generation facility composed of the concentrating solar power generation device, the amount of power generation per unit area can be increased. In addition, the plurality of solar power generation devices are close to each other, whereby the entire device can be lightened, the cable can be shortened, and the maintenance of the equipment can be facilitated.

In addition, the specific value of each of the arrangement intervals in the X direction and the Y direction is within a range of 2 to 2.5 times the length of the diagonal line. Further, in the case where the arrangement area in the case where the arrangement interval is the length of the diagonal is set as the reference value, it may be designed such that the installation interval is set such that the area of the installation area becomes 1 to 1.56 times the reference value. In these cases, more power generation can be obtained than in the case where a fixed type of wafer solar power generation module is buried in the same installation area.

In addition, in the embodiments disclosed herein, all the features are considered as examples and are not restrictive. The scope of the invention is intended to be embraced by the scope of the claims

1‧‧‧Array

1M‧‧‧ Concentrating Solar Power Module

2‧‧‧ Tracker

3‧‧‧Power conditioner

10‧‧‧Solar power generation unit

11‧‧‧ 台台

12‧‧‧ reinforcing materials

13‧‧‧ box

21‧‧‧ pillar

22‧‧‧ Foundation

23‧‧‧2 shaft drive

24‧‧‧ horizontal axis

100‧‧‧Solar power generation equipment

E‧‧‧Setting area

Fig. 1 is a perspective view of a concentrating solar power generation device in which one seat is viewed from a light receiving surface side. Fig. 2 is a perspective view of a concentrating solar power generation device in which one seat is viewed from the back side. FIG. 3 is a perspective view showing an attitude of an array facing the sun as an example. [Fig. 4] Fig. 4 is a schematic bird's-eye view of a configuration interval of an array of arrays. Fig. 5 is a bird's-eye view showing an array of horizontal postures of four seats arranged in the manner of Fig. 4, and their movable ranges are indicated by circles of double-dot chain lines (the same applies hereinafter). Fig. 6 is a bird's eye view of the array of four seats arranged in the manner of Fig. 4, in a state where the posture is not horizontal (the array is tilted in the direction in which the sun faces). Fig. 7 is a schematic bird's eye view showing a state in which the azimuth angle of the array is changed from the state of Fig. 6. [Fig. 8] Fig. 8 is a schematic bird's-eye view showing a case where, for example, an array of 34 seats is arranged side by side in the arrangement area according to the method of Fig. 4. [Fig. 9] Fig. 9 is a view showing an arrangement interval of the set area E [m ² ] and each of the X-direction (east-west direction) and the Y-direction (north-south direction) for a certain number of arrays. A graph showing the relationship between the amount of electricity generated per year and the amount of electricity generated per year [kWh/m ² /y].

Claims (4)

A solar power generation device is a solar power generation device having a square shape in which a contour shape of a maximum size is quadrangular in a plurality of arrays arranged in an array in each of the arrays, and the solar power generation device is orthogonal to each other In the case where the X-direction and the Y-direction are two-dimensionally indicating the installation area, the arrangement interval between the X direction and the Y direction of the solar power generation device is equal to or longer than the length of the diagonal of the square, and is limited to a predetermined range. Inside. The solar power generation device according to the first aspect of the invention, wherein the total value of the arrangement intervals of the X direction and the Y direction falls within a range of 2 to 2.5 times the length of the diagonal line. The solar power generation apparatus according to claim 1, wherein, in the case where the area of the aforementioned setting area in the case where the arrangement interval is the length of the diagonal line is set as a reference value, the aforementioned setting interval is It is set such that the area becomes 1 to 1.56 times the aforementioned reference value. The photovoltaic power generation apparatus according to any one of the first to third aspect, wherein the arrangement center of the photovoltaic power generation device closest to each of the X direction and the Y direction is calculated from an outer end of the installation area The distance to this is 1/2 of the aforementioned arrangement interval.