JP5455735B2 - Solar power plant - Google Patents

Description

  The present invention relates to a solar power generation device including a plurality of solar cell modules.

  Solar power generation devices equipped with solar cell modules that convert solar energy into electrical energy can safely use inexhaustible energy without relying on finite natural resources, and the move to a decarbonized society This is a technology that has been attracting attention as a result of the rise in the price of renewable energy utilization technology. Solar cell modules used in solar power generation devices are usually installed southward outdoors to efficiently absorb sunlight, and multiple solar cells are required to secure large-scale power. Modules need to be installed side by side.

  Patent Document 1 describes a solar cell module that can be installed on a horizontal surface such as a flat roof and that can reduce the wind pressure applied to the solar cell module. This solar cell module includes a solar cell and a frame having at least one attachment surface to which the solar cell is attached, and a wind pressure reducing member for reducing wind pressure due to wind is attached to the frame. . The configuration of this conventional apparatus will be described with reference to the drawings.

  FIG. 23 is a diagram illustrating an arrangement example of a conventional solar cell array, and shows a state of arrangement of solar cell modules 8a to 8v included in each solar cell array. FIG. 24 is a cross-sectional view taken along line AA of the solar cell array shown in FIG. It is assumed that each of the solar cell modules 8a, 8f, 8k, and 8r is supported on the foundation 4 as a base. However, in FIG. 24, the structure connecting between the foundation 4 and each of the solar cell modules 8a, 8f, 8k, and 8r is omitted. As shown in FIG. 24, each of the solar cell modules 8a, 8f, 8k, and 8r is provided so as to be inclined with respect to the horizontal plane in accordance with the direction of the sun so that sunlight can be efficiently absorbed.

  When the solar cell array of the conventional solar power generation device is arranged in a configuration as shown in FIG. 24, the force that each solar cell module receives from the wind is shown as “Prior Art 1” in FIG. . As shown in FIGS. 24 and 17, the solar cell module 8a that is disposed on the outermost side and is susceptible to wind when subjected to wind from the lateral direction is subjected to a force exceeding an allowable range and may be destroyed. Have

  Further, when the solar cell array of the conventional solar power generation device is arranged in the configuration as shown in FIG. 24, the power generation amount of each solar cell module is shown as “Prior Art 1” in FIG. . As shown in FIG. 18, each of the solar cell modules 8a, 8f, 8k, and 8r has a sufficient power generation amount.

  In order to avoid the risk of destruction due to the influence of wind, the device described in Patent Document 1 includes wind shield devices 9a to 9e as shown in FIG. FIG. 26 is a cross-sectional view taken along line AA of the solar cell array shown in FIG. As shown in FIG. 26, the force that each solar cell module receives from the wind in the case of including the wind shielding device 9a is shown as “Prior Art 2” in FIG. That is, even when wind is received from the lateral direction, the solar cell modules 8a, 8f, 8k, and 8r are allowed to receive a force from the wind as shown in FIG. It is within range and the risk of being destroyed is eliminated.

  Patent Document 2 describes a solar cell module device in which snow on a solar cell module is automatically dropped so that the solar cell panel does not deviate from the module frame during strong winds. This solar cell module device includes a solar cell module and a mounting base on which the solar cell module is installed inclined with respect to a horizontal plane. The mounting base includes a solar cell module rotation support portion disposed on the upper portion of the solar cell module, and further, the solar cell module is changed to have the solar cell module rotation support portion as a rotation axis. An elastic body is provided in the lower part of the battery module.

  According to this solar cell module device, snow is piled up on the solar cell module, and the solar cell module is rotated by the solar cell module rotation support portion depending on its weight. As a result, it can fall and remove snow by its own weight. Also, according to this solar cell module device, when a strong wind blows toward the solar cell module, the wind force fluctuates with the solar cell module rotation support part as a fulcrum. Can be mitigated, and damage to the solar cell module can be prevented.

  The solar cell module device described in Patent Document 2 has a structure that receives excess force by flexibly moving the solar cell module using the weight of wind power or snow. There is also a device for controlling the orientation of the solar cell module. FIG. 27 is a diagram showing an arrangement example of a conventional solar cell array, and shows the arrangement of the solar cell modules 8a to 8v included in each solar cell array. FIG. 28 is an AA cross-sectional view of the solar cell array shown in FIG. It is assumed that each of the solar cell modules 8a, 8f, 8k, and 8r is supported by using the foundation 4 as a base, as in the case shown in FIG. As shown in FIG. 28, the orientation of each of the solar cell modules 8a, 8f, 8k, and 8r is controlled so as to be parallel to the horizontal plane in order to receive the force of the wind blowing from the lateral direction.

  When the orientation of each of the solar cell modules 8a, 8f, 8k, and 8r is controlled as shown in FIG. 28, the force that each solar cell module receives from the wind is shown as “Prior Art 3” in FIG. ing. As shown in FIG. 17, the solar cell modules 8a, 8f, 8k, and 8r all have a risk that the force received from the wind falls within an allowable range and is not destroyed.

  Another example can be given as an apparatus that positively controls the orientation of the solar cell module by itself for each gantry. FIG. 29 is a cross-sectional view of a conventional solar cell array, and shows how snow 10 accumulates in each of the solar cell modules 8a, 8f, 8k, and 8r with the passage of time. It is assumed that each of the solar cell modules 8a, 8f, 8k, and 8r is supported by using the foundation 4 as a base, as in the case shown in FIG.

  Each of the solar cell modules 8a, 8f, 8k, and 8r shown in FIG. 29 is controlled such that the inclination angle becomes steep at the time 4T, so that the snow 10 accumulated on the solar cell modules is dropped downward, and the power generation amount is reduced due to the snow accumulation. Is to avoid.

JP 2000-208802 A JP 2005-18825 A

  However, when the wind shield device is provided as in the device described in FIG. 26 and Patent Document 1, there is a problem that a space for installing the wind shield device is required and costs are increased. In addition, since the wind shields are effective only for the winds in a specific direction, they cannot respond flexibly when the wind direction changes, and a great number of wind shields are required to deal with winds in all directions. End up.

  Moreover, although the solar cell module apparatus described in patent document 2 has the advantage that it can respond to a wind and snow by providing the support part and elastic body for solar cell module rotation, it has a countermeasure mechanism in all the solar cell modules. Since it is necessary to prepare, when many solar cell modules are installed side by side and large power is ensured, cost increase becomes a problem.

  In addition, when the orientation of each of the solar cell modules 8a, 8f, 8k, and 8r is controlled so as to be parallel to the horizontal plane as shown in FIG. Decrease in volume is a problem. When the orientation of each of the solar cell modules 8a, 8f, 8k, and 8r is controlled as shown in FIG. 28, the power generation amount of each solar cell module is shown as “Prior Art 3” in FIG. . As shown in FIG. 18, each of the solar cell modules 8a, 8f, 8k, and 8r does not face the sun in order to avoid the influence of wind power. The amount is falling.

  Furthermore, when the direction of each of the solar cell modules 8a, 8f, 8k, and 8r has a steep slope every predetermined time as shown in FIG. 29 in order to drop snow, the fluctuation of the power generation amount becomes a problem. FIG. 30 is a diagram showing the power generation amount of each conventional solar cell module shown in FIG. As shown in FIG. 30, the power generation amount of each solar cell module decreases uniformly due to snow as time T, 2T, and 3T progress, and the power generation amount becomes zero at time 4T. Since a general power generation device is not limited to a solar power generation device and stable power supply is desired, fluctuations in the amount of power generated according to the time are a major problem.

  As described above, the solar cell module device described in Patent Document 2 has a structure in which the inclination of the solar cell module automatically becomes a steep angle depending on the weight of snow and snow is dropped. Therefore, when a plurality of solar cell modules are arranged in the same place, it is considered that each solar cell module accumulates snow at the same pace, and all the solar cell modules are inclined at the same timing. The solar cell module device also has a problem that the power generation amount fluctuates.

  The present invention solves the above-mentioned problems of the prior art, and is capable of securing a minimum power generation amount with high environmental performance and suppressing a decrease or fluctuation in the power generation amount, and securing a large amount of power. It is an object of the present invention to provide a solar power generation device that can reduce costs even when a large number of solar cell modules need to be installed.

In order to solve the above problems, a photovoltaic power generation apparatus according to the present invention includes a plurality of solar cell modules, an environmental condition measurement unit that measures environmental conditions of a place where the plurality of solar cell modules are installed, and the environment Based on the environmental conditions measured by the condition measurement unit, a calculation unit that calculates a target elevation angle to be performed by each of the plurality of solar cell modules, and the plurality of solar cells based on the target elevation angle calculated by the calculation unit An elevation angle control unit that controls the elevation angle of each of the battery modules, and the calculation unit is necessary based on the environmental conditions measured by the environmental condition measurement unit and the power generation amount of each of the plurality of solar cell modules. The target elevation angle to be made by each of the plurality of solar cell modules is calculated so as to secure the power generation amount .

  According to the present invention, it is necessary to install a large number of solar cell modules in order to secure a minimum amount of power generation with high environmental performance and suppress a decrease or fluctuation in the amount of power generation, and to secure a large amount of power. Even in some cases, costs can be reduced.

It is a figure which shows the example of arrangement | positioning of the solar cell array in the solar power generation device of the form of Example 1 of this invention. It is the side view and back view of a solar cell array in the solar power generation device of the form of Example 1 of this invention. It is a block diagram which shows the structure of the solar power generation device of the form of Example 1 of this invention. It is a flowchart figure which shows operation | movement of the solar power generation device of the form of Example 1 of this invention. It is a figure explaining the wind resistance of the solar power generation device of the form of Example 1 of this invention. It is sectional drawing of the solar cell array in the solar power generation device of the form of Example 1 of this invention. It is a flowchart figure which shows operation | movement of the solar power generation device of the form of Example 1 of this invention in case an environmental measurement apparatus measures a wind direction and a wind speed. It is a figure explaining the relationship between the elevation angle of the solar cell module in the solar power generation device of the form of Example 1 of this invention, a wind-proof speed, and a wind-proof property. It is a figure which shows the example of calculation of the wind speed before and behind the solar cell module in the solar power generation device of the form of Example 1 of this invention. It is a figure which shows one example of the elevation angle control of the solar cell module in the solar power generation device of the form of Example 1 of this invention. It is a figure which shows another example of the elevation angle control of the solar cell module in the solar power generation device of the form of Example 1 of this invention. It is a figure which shows another example of the elevation angle control of the solar cell module in the solar power generation device of the form of Example 1 of this invention. It is another example of the flowchart figure which shows operation | movement of the solar power generation device of the form of Example 1 of this invention in case an environmental measurement apparatus measures a wind direction and a wind speed. It is a figure explaining the relationship between the elevation angle of a solar cell module in the solar power generation device of the form of Example 1 of this invention, a wind-proof speed, windproof property, and electric power generation amount. It is a figure which shows one example of the elevation angle control of the solar cell module in the solar power generation device of the form of Example 1 of this invention. It is a figure which shows another example of the elevation angle control of the solar cell module in the solar power generation device of the form of Example 1 of this invention. It is a figure which shows the force which the solar cell module in the conventional apparatus and the solar power generation device of the form of Example 1 of this invention receives from a wind. It is a figure which shows the electric power generation amount of the solar cell module in the conventional apparatus and the solar power generation device of the form of Example 1 of this invention. It is a figure which shows the example of arrangement | positioning of the solar cell array in the solar power generation device of the form of Example 1 of this invention. It is sectional drawing of the solar cell array in the solar power generation device of the form of Example 2 of this invention. It is a flowchart figure which shows operation | movement of the solar power generation device of the form of Example 2 of this invention when an environmental measurement apparatus measures the amount of snow accumulation. It is a figure which shows the electric power generation amount of each solar cell module in the solar power generation device of the form of Example 2 of this invention. It is a figure which shows the example of arrangement | positioning of the conventional solar cell array. It is sectional drawing of the conventional solar cell array. It is a figure which shows the example of arrangement | positioning of the conventional solar cell array provided with the wind shield. It is sectional drawing of the conventional solar cell array provided with the wind shield. It is a figure which shows the example of arrangement | positioning of the conventional solar cell array. It is sectional drawing of the conventional solar cell array. It is sectional drawing of the conventional solar cell array. It is a figure which shows the electric power generation amount of each solar cell module in the conventional solar cell array.

  Hereinafter, embodiments of the photovoltaic power generation apparatus of the present invention will be described in detail with reference to the drawings.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating an arrangement example of solar cell arrays in the photovoltaic power generation apparatus according to Embodiment 1 of the present invention, and illustrates the arrangement of solar cell modules 8a to 8v included in each solar cell array. That is, the solar power generation device of the present invention includes a plurality of solar cell modules 8a to 8v.

  FIG. 2 is a side view and a rear view of the solar cell array 1 in the photovoltaic power generation apparatus according to Embodiment 1 of the present invention. As shown in FIG. 2, the solar cell array 1 controls the solar cell module 8 that converts solar energy into electric energy, the direction control device 7 that controls the direction of the solar cell module 8, and the direction control device 7. A reference 4 is provided. The direction control device 7 includes an elevation angle varying device 2 and an azimuth angle varying device 3. FIG. 1 described above shows a state in which a plurality of solar cell arrays 1 are arranged in the same place.

  The elevation angle varying device 2 drives the solar cell module 8 in the elevation angle direction shown in FIG. Furthermore, the azimuth varying device 3 drives the solar cell module 8 in the azimuth direction shown in FIG. Note that the azimuth angle varying device 3 is not necessarily indispensable for realizing the present invention, and may simply have the solar cell module 8 facing southward.

  Moreover, FIG. 3 is a block diagram which shows the structure of the solar power generation device of a present Example. As shown in FIG. 3, the solar power generation device of this example includes an environment measurement device 5, a calculation device 6, and a plurality of direction control devices 7 a to 7 f. However, since the direction control device 7 constitutes a part of the solar cell array 1, there are the same number of the direction control devices 7 as the solar cell array 1 (solar cell module 8). Accordingly, when the number of solar cell modules is 8a to 8v as shown in FIG. 1, the direction control device 7 is assumed to exist corresponding to 7a to 7v. Each of the plurality of direction control devices 7a to 7f includes the elevation angle varying device 2 and the azimuth angle varying device 3 as described with reference to FIG.

  The environmental measuring device 5 corresponds to the environmental condition measuring unit of the present invention, and measures the environmental condition of the place where the plurality of solar cell modules 8 are installed. Here, various environmental conditions can be considered, and examples include wind direction, wind speed, snow cover, rainfall, temperature, humidity, and solar radiation. It is assumed that the environment measuring device 5 can quantitatively measure at least one environmental condition. Detailed operation of the environment measuring device 5 will be described later.

  The arithmetic device 6 corresponds to the calculation unit of the present invention, and calculates the target elevation angle that each of the plurality of solar cell modules 8a to 8v should make based on the environmental conditions measured by the environment measuring device 5.

  The direction control device 7 (elevation angle varying device 2) corresponds to the elevation angle control unit of the present invention, and controls the elevation angle of each of the plurality of solar cell modules 8a to 8v based on the target elevation angle calculated by the calculation device 6. . If the direction control device 7 (elevation angle varying device 2) is merely a mechanism for adjusting the elevation angle, and it is the arithmetic device 6 that actually controls the elevation angle, the arithmetic device 6 is the elevation angle of the present invention. Corresponding to the control unit, the elevation angle of each of the plurality of solar cell modules 8a to 8v is controlled based on the target elevation angle calculated by itself.

  Moreover, the arithmetic unit 6 calculates the target azimuth angle of each of the plurality of solar cell modules 8a to 8v based on the environmental condition (for example, the direction of the sun) measured by the environment measuring device 5.

  The direction control device 7 (azimuth angle varying device 3) corresponds to the azimuth angle control unit of the present invention, and based on the target azimuth angle calculated by the calculation device 6, each of the azimuth angles of the plurality of solar cell modules 8a to 8v. Control the corners.

  Next, the operation of the present embodiment configured as described above will be described. Basically, each of the plurality of solar cell arrays 1 is controlled by the direction control device 7 (or originally) in the direction of the sun so that the electric energy obtained from each of the plurality of solar cell modules 8a to 8v is maximized. Has been. However, when the wind is received from the direction opposite to the sun, the arithmetic unit 6 makes the force received from the wind by the solar cell modules 8a, 8b, 8c, 8d, and 8e close to the windward within an allowable range. It is necessary to calculate the target elevation angle. Similarly, the arithmetic unit 6 needs to calculate the target elevation angle so that the force received from the wind by the solar cell modules 8f, 8g, 8h, 8i, and 8j next closest to the windward is within the allowable range. As a result of calculating the target elevation angle in the order from the windward in this way, each of the plurality of solar cell modules faces a different direction depending on the location. In this specification, simultaneous control of the direction of each solar cell module according to the environmental condition is referred to as a spatially coordinated operation.

  First, the environment measuring device 5 shall measure a wind direction as an environmental condition of the place where the some solar cell module 8a-8v was installed. Moreover, the arithmetic unit 6 calculates the target elevation angle that each of the plurality of solar cell modules 8a to 8v should make based on the wind direction measured by the environment measurement device 5 so as to ensure the required wind resistance performance. To do.

  FIG. 4 is a flowchart showing the operation of the photovoltaic power generation apparatus according to this embodiment. First, the environment measuring device 5 measures the wind direction at the place where the plurality of solar cell modules 8a to 8v are installed (step S1). Next, based on the wind direction measured by the environment measuring device 5, the computing device 6 identifies the solar cell module closest to the direction in which the wind comes and measures or estimates the direction of the solar cell module (step S2). It is confirmed whether the solar cell module closest to the wind direction has an elevation angle with high wind resistance (step S3). When the elevation angle is not high with wind resistance, the calculation device 6 calculates the target elevation angle so that the wind resistance of the solar cell module closest to the direction of the wind is high. The direction control device 7 (elevation angle varying device 2) controls the elevation angle of the solar cell module so as to be the target elevation angle calculated by the calculation device 6 (step S4).

  Note that steps S2 and S3 are not essential steps, and the arithmetic device 6 may calculate the target elevation angle without confirming the current elevation angle of the solar cell module and cause the direction control device 7 to control the elevation angle (step). S4).

  FIG. 5 is a diagram for explaining wind resistance of the photovoltaic power generation apparatus according to the present embodiment. As shown in FIG. 5, the solar cell module in the photovoltaic power generation apparatus of the present example can obtain high wind resistance by directing the sunlight-applying side of the panel in the wind arrival direction.

  FIG. 6 is an AA cross-sectional view of the solar cell array in the solar power generation apparatus of the present embodiment shown in FIG. 1, and the thick arrows indicate the forces that each of the solar cell modules 8a, 8f, 8k, and 8r receives from the wind. In FIG. 6, since the solar cell module 8a is closest to the direction in which the wind comes, the calculation device 6 calculates the target elevation angle so that the wind resistance of the solar cell module 8a is high, and the high wind resistance as shown in FIG. The angle of elevation that can be obtained is output as the target angle of elevation. The direction control device 7a (elevation angle varying device 2) controls the elevation angle of the solar cell module so as to be the target elevation angle calculated by the calculation device 6 (step S4 in FIG. 4).

  In addition, although the solar power generation device of a present Example may be complete | finished only by controlling the elevation angle of the solar cell module 8a nearest to the direction where a wind comes, the elevation angle of another solar cell module is demonstrated so that it may demonstrate below. May also be controlled. The solar cell module 8a has high wind resistance due to the elevation angle as shown in FIG. 6 and can weaken the wind force against other solar cell modules located on the leeward side, but it cannot be completely eliminated. . Therefore, the calculation device 6 calculates the target elevation angle of the solar cell module 8f as a nearly horizontal angle so that the solar cell module 8f near the wind direction next to the solar cell module 8a can receive the wind force. Then output.

  Further, since it is considered that the wind force is considerably weakened by the presence of the solar cell modules 8a and 8f, the arithmetic unit 6 sets the target elevation angle of the solar cell modules 8k and 8r as a normal angle (an angle that matches the direction of the sun). Calculate and output. That is, when calculating the target elevation angle, the arithmetic device 6 determines the current elevation angle for a solar cell module that has been determined that it is not necessary to change the current elevation angle based on the environmental conditions measured by the environment measurement device 5. The target elevation angle is calculated so as to be maintained.

  Next, the case where the environment measuring device 5 measures the wind direction and the wind speed as the environmental conditions of the place where the plurality of solar cell modules 8a to 8v are installed will be described. In this case, the arithmetic device 6 can calculate the target elevation angle of each solar cell module more accurately, and ensures the required wind resistance performance based on the wind direction and the wind speed measured by the environment measuring device 5. Thus, the target elevation angle to be made by each of the plurality of solar cell modules 8a to 8v is calculated.

  FIG. 7 is a flowchart showing the operation of the photovoltaic power generation apparatus according to the present embodiment when the environment measuring apparatus 5 measures the wind direction and the wind speed. First, n = 1 is set (step S11), and the environment measuring device 5 measures the wind direction and the wind speed at the place where the plurality of solar cell modules 8a to 8v are installed. Next, the computing device 6 specifies a solar cell module that is closest to the direction in which the wind comes based on the wind direction measured by the environment measuring device 5, and the wind speed received by the nth solar cell module in the direction in which the wind comes. Or is measured using a sensor or the like (step S12).

  Next, the arithmetic unit 6 measures or estimates the direction of the nth solar cell module in the direction in which the wind comes (step S13), and the wind resistance speed of the nth solar cell module in the direction in which the wind comes It is confirmed whether or not the wind speed is higher than that received by the solar cell module (step S14). Since the solar cell module may be destroyed when the wind resistant speed of the solar cell module closest to the n-th in the direction of the wind is not higher than the wind speed received by the solar cell module, the arithmetic unit 6 is A target elevation angle is calculated so that the wind-resistant speed of the solar cell module is equal to or higher than the wind velocity (step S15), and the direction control device 7 (elevation angle varying device 2) is controlled to control the elevation angle of the solar cell module, and then step S12. Return to.

  When the wind resistant speed of the nth solar cell module closest to the direction of the wind is equal to or higher than the wind speed received by the solar cell module, n is increased by 1 (step S16), and the arithmetic unit 6 receives the wind. It is determined whether or not a solar cell module closest to the direction is present (step S17). When the nth solar cell module is present in the direction in which the wind comes, the process returns to step S12, and when there is no solar cell module, the calculation device 6 ends the calculation.

  FIG. 8 is a diagram for explaining the relationship between the elevation angle of the solar cell module, the wind resistance speed, and the windproof property in the photovoltaic power generation apparatus of the present embodiment. As shown in FIG. 8, the wind resistant speed is the wind speed that the solar cell module can withstand depending on the direction (elevation angle) of the solar cell module. Moreover, windproof property is a ratio which shows how much the wind speed after passing a solar cell module reduces from the wind speed before passing a solar cell module.

  FIG. 9 is a diagram illustrating a calculation example of the wind speed before and after passing through the solar cell module in the solar power generation device of this example. As shown in FIG. 9, when the wind having the wind speed X [m / s] passes through the solar cell module having the windproof property a, the wind speed after passing is Y [m / s]. However, the wind speed Y [m / s] can be calculated by Y = X * (1-a). The arithmetic device 6 can obtain the wind speed after passing through the solar cell module from the wind speed before passing through the solar cell module by previously having data indicating the relationship between the elevation angle and the windproof property.

  FIG. 10 is a diagram illustrating an example of the elevation angle control of the solar cell module in the photovoltaic power generation apparatus of the present embodiment, and illustrates a case where the wind speed is weak and wind resistance control is not necessary. First, since the wind with a wind speed of 20 m / s is blowing on the solar cell module with a wind resistant speed of 25 m / s, the computing device 6 has a wind resistant speed of the solar cell module higher than the wind speed received by the solar cell module. And the target elevation angle remains the normal elevation angle. Further, since the windproof property is 60%, the calculation device 6 calculates that the wind speed after passing through the solar cell module is 8 [m / s] (= 20 * (1-0.6)). Since the wind resistance speed of the second solar cell module is less than (= 25 m / s), the target elevation angle of the second solar cell module is also kept at a normal elevation angle. Similarly, the calculation device 6 calculates that the wind speed after passing through the second solar cell module is 3.2 m / s, and the wind speed after passing through the third solar cell module is 1.3 m / s. It is determined that there is no need to change the elevation angle of the fourth solar cell module.

  On the other hand, FIG. 11 is a figure which shows another example of the elevation angle control of the solar cell module in the solar power generation device of a present Example, and has shown the case where a wind speed is a little strong and one windward control was carried out. However, FIG. 11 shows the state after the wind resistance control, and it is assumed that the state of FIG. 10 has shifted to the state of FIG. First, since the wind with a wind speed of 40 m / s was blown to the solar cell module with a wind resistant speed of 25 m / s, the calculation device 6 determines that the wind resistant speed of the solar cell module is not higher than the wind speed received by the solar cell module. Then, the target elevation angle is calculated so that the wind resistant speed of the solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle varying device 2) is controlled to control the elevation angle of the solar cell module.

  As a result, the wind resistant speed of the first solar cell module is 40 m / s, and the arithmetic device 6 determines that the wind resistant speed of the first solar cell module is equal to or higher than the wind speed received by the solar cell module. Since the wind resistance of the first solar cell module is 50%, the calculation device 6 has a wind speed of 20 [m / s] after passing through the first solar cell module (= 40 * (1-0.5)). Since it is less than the wind resistance speed (= 25 m / s) of the second solar cell module, the target elevation angle of the second solar cell module remains the normal elevation angle. Similarly, the calculation device 6 calculates that the wind speed after passing through the second solar cell module is 8 m / s, and that the wind speed after passing through the third solar cell module is 3.2 m / s, and the third, fourth, It is determined that there is no need to change the elevation angle of the second solar cell module.

  FIG. 12 is a diagram showing another example of the elevation angle control of the solar cell module in the photovoltaic power generation apparatus of the present embodiment, and shows a case where the wind speed is strong and two windward controls are performed. However, FIG. 12 shows a state after the wind resistance control, and it is assumed that the state of FIG. 10 has shifted to the state of FIG. First, since wind with a wind speed of 60 m / s was blown to a solar cell module with a wind resistant speed of 25 m / s, the arithmetic unit 6 determines that the wind resistant speed of the solar cell module is not higher than the wind speed received by the solar cell module. Then, the target elevation angle is calculated so that the wind resistant speed of the solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle varying device 2) is controlled to control the elevation angle of the solar cell module.

  As a result, the wind resistant speed of the first solar cell module is 60 m / s, and the arithmetic device 6 determines that the wind resistant speed of the first solar cell module is equal to or higher than the wind speed received by the solar cell module. Since the wind resistance of the first solar cell module is 40%, the calculation device 6 has a wind speed of 36 [m / s] after passing through the first solar cell module (= 60 * (1-0.4)). Is calculated. Therefore, since the wind with a wind speed of 36 m / s was blown to the second solar cell module with a wind resistant speed of 25 m / s, the calculation device 6 has a wind resistant speed of the second solar cell module higher than the wind speed received by the solar cell module. The target elevation angle is calculated so that the wind resistance speed of the second solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle variable device 2) controls the elevation angle of the solar cell module. .

  As a result, the wind resistant speed of the second solar cell module is 40 m / s, and the arithmetic device 6 determines that the wind resistant speed of the second solar cell module is equal to or higher than the wind speed received by the solar cell module. Since the wind resistance of the second solar cell module is 50%, the calculation device 6 has a wind speed of 18 [m / s] after passing through the second solar cell module (= 36 * (1-0.5)). Therefore, the target elevation angle of the second solar cell module remains the normal elevation angle because the wind resistance speed of the third solar cell module is less than 25 m / s.

  Similarly, the calculation device 6 calculates that the wind speed after passing through the third solar cell module is 7.2 m / s, and determines that there is no need to change the elevation angle of the fourth solar cell module.

  Next, the environmental measuring device 5 measures the wind direction and the wind speed as the environmental conditions of the place where the plurality of solar cell modules 8a to 8v are installed, and the arithmetic device 6 calculates the target elevation angle in consideration of the power generation amount. The case where it performs is demonstrated. In this case, a plurality of arithmetic devices 6 are provided so as to ensure the required power generation amount based on the environmental conditions measured by the environment measurement device 5 and the power generation amounts of the plurality of solar cell modules 8a to 8v. The target elevation angle to be made by each of the solar cell modules 8a to 8v is calculated. The “necessary power generation amount” does not necessarily indicate a predetermined power generation amount, and may be, for example, “maximum power generation amount while ensuring wind resistance performance”. Moreover, the calculating part 6 calculates the target elevation angle which each of several solar cell module 8a-8v should make based on the wind direction and wind speed which were measured by the environment measurement apparatus 5 so that the required wind-proof performance may be ensured. To do. When “power generation amount” and “wind resistance performance” compete with each other, the calculation unit 6 may calculate the elevation angle by setting a priority to either of them in advance, or based on a rule determined by itself. What is necessary is just to calculate a target elevation angle.

  FIG. 13 is a flowchart showing the operation of the solar power generation apparatus according to the present embodiment when the environment measurement apparatus 5 measures the wind direction and the wind speed, and the calculation unit 6 operates in consideration of the power generation amount. First, the environment measuring device 5 measures the wind direction and the wind speed at the place where the plurality of solar cell modules 8a to 8v are installed. Next, the arithmetic unit 6 calculates the target elevation angle assumed in the direction in which the amount of power generation is the largest for all the solar cell modules 8a to 8v (step S21).

  Various methods are conceivable for calculating the target elevation angle taking into account the amount of power generation. For example, the arithmetic device 6 may have a power generation amount corresponding to the elevation angle as data in advance. Moreover, the environment measurement apparatus 5 may measure the amount of solar radiation as an environmental condition of the place where the plurality of solar cell modules 8a to 8v are installed. In this case, the calculation device 6 estimates the power generation amount of each of the plurality of solar cell modules 8a to 8v based on the amount of solar radiation measured by the environment measurement device 5, and secures the necessary power generation amount. The target elevation angle that each of the plurality of solar cell modules 8a to 8v should make is calculated.

  Or the environment measuring apparatus 5 may measure the direction of the sun as the environmental condition of the place where the plurality of solar cell modules 8a to 8v are installed. In this case, the arithmetic unit 6 estimates the power generation amount of each of the plurality of solar cell modules 8a to 8v based on the direction of the sun measured by the environment measurement device 5, and ensures the necessary power generation amount. Thus, the target elevation angle that each of the plurality of solar cell modules 8a to 8v should make is calculated. However, the environment measuring device 5 does not necessarily need to measure the direction of the sun using a sensor or the like, and may determine the direction of the sun by calculation from the date, time, latitude and longitude.

  Next, the arithmetic unit 6 sets n = 1 (step S22), specifies the solar cell module closest to the direction in which the wind comes based on the wind direction measured by the environment measuring device 5, and sets n in the direction in which the wind comes. The wind speed received by the nearest solar cell module is calculated or measured using a sensor or the like (step S23).

  Next, the computing device 6 measures or estimates the direction of the nth solar cell module in the direction of the wind (step S24), and the wind resistance speed of the nth solar cell module in the direction of the wind is It is confirmed whether or not the wind speed is higher than that received by the solar cell module (step S25). Since the solar cell module may be destroyed when the wind resistant speed of the solar cell module closest to the n-th in the direction of the wind is not higher than the wind speed received by the solar cell module, the arithmetic unit 6 is The target elevation angle is calculated so that the wind resistant speed of the solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle varying device 2) controls the elevation angle of the solar cell module (step S26). Thereafter, the process returns to step S23.

  When the wind resistant speed of the nth solar cell module closest to the direction of the wind is equal to or higher than the wind speed received by the solar cell module, n is increased by 1 (step S27), and the arithmetic unit 6 receives the wind. It is determined whether or not there is an nth closest solar cell module in the direction (step S28). If the nth closest solar cell module exists in the direction of the wind, the process returns to step S23, and if not, the arithmetic unit 6 determines whether or not the total power generation amount of the solar cell modules is maximum. (Step S29). If the total power generation amount is the maximum, the arithmetic unit 6 ends the calculation, and if not the maximum, the arithmetic unit 6 assumes that the direction of the n = 1st solar cell module is higher in the windproof property (step S30). Return to step S22.

  FIG. 14 is a diagram illustrating the relationship between the elevation angle of the solar cell module, wind resistance speed, windproof property, and power generation amount in the solar power generation apparatus of this example. As shown in FIG. 14, the power generation amount indicates a ratio of the power generation amount of the solar cell module depending on the direction (elevation angle) of the solar cell module. Moreover, in FIG. 14, it is assumed that the sun is located diagonally upward to the right. Therefore, when the panel of the solar cell module is facing the opposite side (left side) or perpendicular to the ground, the amount of power generation is low.

  FIG. 15 is a diagram illustrating an example of the elevation angle control of the solar cell module in the photovoltaic power generation apparatus according to the present embodiment. However, FIG. 15 shows the state after the wind resistance control, and is the state of step S29 in the flowchart of FIG. First, since the wind with a wind speed of 90 m / s was blown to the solar cell module with a wind speed of 25 m / s, the arithmetic device 6 determines that the wind speed of the solar cell module is not higher than the wind speed received by the solar cell module. Then, the target elevation angle is calculated so that the wind resistant speed of the solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle varying device 2) is controlled to control the elevation angle of the solar cell module.

  As a result, the wind resistant speed of the first solar cell module is 100 m / s, and the arithmetic device 6 determines that the wind resistant speed of the first solar cell module is equal to or higher than the wind speed received by the solar cell module. Since the wind resistance of the first solar cell module is 20%, the calculation device 6 has a wind speed of 72 [m / s] after passing through the first solar cell module (= 90 * (1-0.2)). Is calculated. Therefore, since the wind with a wind speed of 72 m / s was blown to the second solar cell module with a wind resistant speed of 25 m / s, the calculation device 6 has a wind resistant speed of the second solar cell module higher than the wind speed received by the solar cell module. The target elevation angle is calculated so that the wind resistance speed of the second solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle variable device 2) controls the elevation angle of the solar cell module. .

  As a result, the wind resistant speed of the second solar cell module is 80 m / s, and the arithmetic device 6 determines that the wind resistant speed of the second solar cell module is equal to or higher than the wind speed received by the solar cell module. Since the windproof property of the second solar cell module is 30%, the calculation device 6 has a wind speed of 50 [m / s] after passing through the second solar cell module (= 72 * (1-0.3)). Is calculated. Therefore, since the wind with a wind speed of 50 m / s was blown to the third solar cell module with a wind resistance speed of 25 m / s, the calculation device 6 has a wind resistance speed of the third solar cell module higher than the wind speed received by the solar cell module. The target elevation angle is calculated so that the wind resistance speed of the third solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle varying device 2) controls the elevation angle of the solar cell module. .

  As a result, the wind resistant speed of the third solar cell module is 60 m / s, and the arithmetic device 6 determines that the wind resistant speed of the third solar cell module is equal to or higher than the wind speed received by the solar cell module. Since the wind resistance of the third solar cell module is 40%, the calculation device 6 has a wind speed of 30 [m / s] after passing through the third solar cell module (= 50 * (1-0.4)). Is calculated. Therefore, since the wind at a wind speed of 30 m / s blows to the fourth solar cell module with a wind speed of 25 m / s, the calculation device 6 determines that the wind speed of the fourth solar cell module is greater than or equal to the wind speed received by the solar cell module. The target elevation angle is calculated so that the wind resistance speed of the fourth solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle varying device 2) controls the elevation angle of the solar cell module. .

  As a result, the wind resistance speed of the fourth solar cell module is 40 m / s, and the arithmetic device 6 determines that the wind resistance speed of the fourth solar cell module is equal to or higher than the wind speed received by the solar cell module. Since the wind resistance of the fourth solar cell module is 50%, the calculation device 6 has a wind speed of 15 [m / s] (= 30 * (1-0.5)) after passing through the fourth solar cell module. Is calculated. Therefore, since the wind with a wind speed of 15 m / s was blown to the fifth solar cell module with a wind resistant speed of 25 m / s, the wind resistant speed of the fifth solar cell module (= 25 m / s) is less, and the arithmetic device 6 is The target elevation angle of the fifth solar cell module is kept at the normal elevation angle.

  Here, the power generation amount of the first solar cell module shown in FIG. 15 is 60%, the power generation amount of the second solar cell module is 70%, and the power generation amount of the third solar cell module is 80%. Yes, the power generation amount of the fourth solar cell module is 90%, and the power generation amount of the fifth solar cell module is 100%, so the total power generation amount is 400%.

  The arithmetic device 6 determines whether or not the total power generation amount of the solar cell module is the maximum (step S29 in FIG. 13). When it is determined that the total power generation amount is not the maximum, the arithmetic device 6 assumes that the direction of the first solar cell module is in the direction of increasing the windproof property (step S30), and recalculates the calculation. The result is shown in FIG.

  FIG. 16 is a diagram illustrating an example of the elevation angle control of the solar cell module in the solar power generation device of this example. In FIG. 15, the windproof property of the first solar cell module is 20%, but the arithmetic device 6 sets the windproof property of the first solar cell module to 40% as shown in FIG. 16. In this case, the wind-resistant speed falls from 100 m / s to 90 m / s as compared to FIG. 15, but the first solar cell module can withstand because the wind speed of the blowing wind is 90 m / s. Can do.

  Since the wind resistance of the first solar cell module is 40%, the calculation device 6 has a wind speed of 54 [m / s] (= 90 * (1-0.4)) after passing through the first solar cell module. Is calculated. Therefore, since the wind with a wind speed of 54 m / s was blown to the second solar cell module with a wind resistant speed of 25 m / s, the calculation device 6 has a wind resistant speed of the second solar cell module equal to or higher than the wind speed received by the solar cell module. The target elevation angle is calculated so that the wind resistance speed of the second solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle variable device 2) controls the elevation angle of the solar cell module. .

  As a result, the wind resistant speed of the second solar cell module is 60 m / s, and the arithmetic device 6 determines that the wind resistant speed of the second solar cell module is equal to or higher than the wind speed received by the solar cell module. Since the wind resistance of the second solar cell module is 40%, the calculation device 6 has a wind speed of 32 [m / s] (= 54 * (1-0.4)) after passing through the second solar cell module. Is calculated. Therefore, since the wind with a wind speed of 32 m / s was blown to the third solar cell module with a wind resistance speed of 25 m / s, the calculation device 6 has a wind resistance speed of the third solar cell module higher than the wind speed received by the solar cell module. The target elevation angle is calculated so that the wind resistance speed of the third solar cell module is equal to or higher than the wind velocity, and the direction control device 7 (elevation angle varying device 2) controls the elevation angle of the solar cell module. .

  As a result, the wind resistance speed of the third solar cell module is 40 m / s, and the arithmetic device 6 determines that the wind resistance speed of the third solar cell module is equal to or higher than the wind speed received by the solar cell module. Since the wind resistance of the third solar cell module is 50%, the calculation device 6 has a wind speed of 16 [m / s] (= 32 * (1-0.5)) after passing through the third solar cell module. Is calculated. Therefore, since the wind at a wind speed of 16 m / s was blown to the fourth solar cell module having a wind resistant speed of 25 m / s, the calculation device 6 has a wind resistant speed of the fourth solar cell module equal to or higher than the wind speed received by the solar cell module. Therefore, the target elevation angle of the fourth solar cell module is kept at the normal elevation angle.

  Since the wind resistance of the fourth solar cell module is 60%, the calculation device 6 has a wind speed of 6.5 [m / s] (= 16 * (1-0.6) after passing through the fourth solar cell module. )). Therefore, since the wind with a wind speed of 6.5 m / s was blown to the fifth solar cell module with a wind resistant speed of 25 m / s, the arithmetic unit 6 determines that the wind resistant speed of the fifth solar cell module is the wind speed that the solar cell module receives. It judges that it is above, and keeps the target elevation angle of the 5th solar cell module with a normal elevation angle.

  Here, the power generation amount of the first solar cell module shown in FIG. 16 is 50%, the power generation amount of the second solar cell module is 80%, and the power generation amount of the third solar cell module is 90%. Yes, the power generation amount of the fourth solar cell module is 100%, and the power generation amount of the fifth solar cell module is 100%, so the total power generation amount is 420%. That is, the solar power generation apparatus of the present embodiment can ensure the required wind resistance performance in both the case of FIG. 15 and the case of FIG. 16, but FIG. 16 can obtain a larger amount of power generation. .

  As described above, according to the photovoltaic power generation apparatus according to the first embodiment of the present invention, it is possible to secure a minimum power generation amount with high environmental performance and suppress a decrease in the power generation amount, and to generate a large amount of power. Costs can be reduced even when a large number of solar cell modules need to be installed in order to ensure.

  FIG. 17 is a diagram illustrating the force that the solar cell module receives from the wind in the conventional device and the solar power generation device of this example. In addition, the data of this invention shown in FIG. 17 are a thing when each elevation angle of solar cell module 8a, 8f, 8k, 8r is controlled as shown in FIG. The solar power generation device of the present embodiment does not require a windshield device as in Patent Document 1 by spatially cooperatively operating a plurality of solar cell modules, and allows the solar cell module to receive a force received from the wind. It is possible to avoid being destroyed.

  Moreover, FIG. 18 is a figure which shows the electric power generation amount of the solar cell module in the conventional apparatus and the solar power generation device of a present Example. In addition, the data of this invention shown in FIG. 18 are a thing when each elevation angle of solar cell module 8a, 8f, 8k, 8r is controlled as shown in FIG. The solar power generation apparatus of the present embodiment uses the solar cell modules 8a and 8f close to the windward for wind shielding by spatially cooperating a plurality of solar cell modules, and the solar cell modules 8k and 8k close to the leeward. By controlling the elevation angle of 8r in the direction of the sun, a minimum amount of power generation can be ensured.

  That is, as shown in “Prior Art 3” in FIG. 18, the solar power generation apparatus of the present embodiment is compared with the case where the solar cell modules 8a, 8f, 8k, and 8r are all controlled to be parallel to the horizontal plane. Since the elevation angles of the solar cell modules 8a, 8f, 8k, and 8r are individually controlled so as to achieve both wind shielding and power generation, a larger total power generation amount can be obtained.

  In addition, in the case of a solar power generation device in which many solar cell modules are arranged from the windward to the leeward and the distance from the windward to the leeward is long, it can be said that the benefits of more spatial cooperative operation can be obtained. . Even in terms of cost, solar cell modules on the leeward side (for example, solar cell modules located on the inner side when a large number of solar cell modules are arranged vertically and horizontally) are considered to be less affected by the wind, The elevation angle control mechanism can be omitted, and the cost can be reduced as compared with a conventional device that requires a countermeasure mechanism for all the solar cell modules.

  In addition, FIG. 19 is a figure which shows the example of arrangement | positioning of the solar cell array in the solar power generation device of a present Example, and shows that it can respond | correspond flexibly according to a wind direction. For example, in the case of the wind direction as shown in FIG. 19A, the solar power generation apparatus of this embodiment controls the solar cell modules 8a, 8b, 8c, 8d, and 8g to an elevation angle with high wind resistance. Further, in the case of the wind direction as shown in FIG. 19 (b), since it coincides with the direction of the sun, the solar power generation device of this example keeps the elevation angle of each solar cell module as a normal elevation angle. Yes. The solar cell modules 8g, 8h, and 8i are close to the wind direction because the elevation angle according to the normal direction of the sun is the elevation angle with high wind resistance performance as it is.

  FIG. 20 is a cross-sectional view of the solar cell array in the solar power generation device of this example, and shows how the snow 10 accumulates in each of the solar cell modules 8a, 8f, 8k, and 8r with time. The configuration of the photovoltaic power generation apparatus of the present embodiment is the same as that of the first embodiment, and a duplicate description is omitted.

  However, the environment measuring apparatus 5 shall measure the amount of snow as an environmental condition of the place where the several solar cell module 8 was installed.

  Moreover, the arithmetic unit 6 sets the target elevation angle for each predetermined time that each of the plurality of solar cell modules 8a to 8v should make based on the environmental conditions measured by the environment measuring device 5 so as to ensure a stable power generation amount. calculate.

  Next, the operation of the present embodiment configured as described above will be described. Basically, each of the plurality of solar cell arrays 1 is controlled by the direction control device 7 (or originally) in the direction of the sun so that the electric energy obtained from each of the plurality of solar cell modules 8a to 8v is maximized. Has been. However, when the snow 10 falls and accumulates on the solar cell module, it becomes difficult for sunlight to reach due to the effect of the accumulated snow 10, and the power generation amount decreases. Therefore, the arithmetic device 6 in the solar power generation device of the present embodiment calculates the target elevation angle so as to drop the snow 10 accumulated every predetermined time. However, if all the solar cell modules drop snow at the same time, the amount of power generation decreases uniformly and the amount of power generation varies as in the conventional device described with reference to FIGS. The power generation device calculates the target elevation angle so as to drop snow 10 on different solar cell modules every predetermined time. In this specification, controlling the direction of each solar cell module based on the passage of time in accordance with the environmental situation is referred to as a time-coordinate operation.

  Specifically, the environment measuring device 5 measures the amount of snow as an environmental condition where the plurality of solar cell modules 8a to 8v are installed. The arithmetic unit 6 starts a temporal cooperative operation as shown in FIG. 20 when the amount of snow cover measured by the environment measuring unit 5 exceeds a certain amount. That is, the arithmetic unit 6 calculates the target elevation angle so as to drop the snow 10 first accumulated on the solar cell module 8a (time T), and after the time T has elapsed (time 2T), The target elevation angle is calculated so as to drop the accumulated snow 10, and after the time T has elapsed (time 3T), the target elevation angle is calculated so as to drop the snow 10 accumulated on the solar cell module 8k. After elapse (time 4T), the target elevation angle is calculated so as to drop the snow 10 accumulated on the solar cell module 8r, and a series of operations are repeated.

  FIG. 21 is a flowchart illustrating the operation of the photovoltaic power generation apparatus according to the present embodiment when the environment measurement apparatus 5 measures the amount of snow. First, the arithmetic unit 6 assumes that the directions of all the solar cell modules 8a to 8v are the direction in which the power generation amount is the largest (step S31), and sets n = 1 (step S32).

  The environment measuring device 5 measures the amount of snow on the place where the plurality of solar cell modules 8a to 8v are installed (step S33). Next, the computing device 6 estimates the snow cover amount of the solar cell module at the position n based on the snow cover amount measured by the environment measuring device 5, or the solar cell module at the position n measured using a sensor or the like. Is obtained via the environment measuring device 5 (step S34).

  Next, the arithmetic device 6 determines whether or not to remove snow from the solar cell module at the position n based on the snow accumulation amount measured by the environment measurement device 5 (step S35), and secures a stable power generation amount. Thus, the target elevation angle for every predetermined time that the solar cell module at position n should make is calculated.

  When it is determined in step S35 that the snow of the solar cell module at the position n is dropped, the direction control device 7 (elevation angle varying device 2), based on the calculated target elevation angle, the solar cell module at the position n at an angle where the snow falls. After controlling the elevation angle of the solar cell module (step S36) and maintaining the direction of the solar cell module for the time required to drop snow (step S37), the solar cell array at position n is controlled in the direction in which the amount of power generation becomes the largest. (Step S38). Thereafter, the process returns to step S33.

  If it is not determined in step S35 that snow on the solar cell module at position n is to be dropped, n is incremented by 1 (step S39), and computing device 6 determines whether or not the solar cell module at position n exists ( Step S40) If it exists, the process returns to step S33, and if it does not exist, the process ends.

  As described above, according to the photovoltaic power generation apparatus according to the second embodiment of the present invention, it is possible to secure a minimum power generation amount with high environmental performance and suppress fluctuations in the power generation amount. FIG. 22 is a diagram showing the power generation amount of the solar cell module in the solar power generation device of this example. The solar power generation device according to the present embodiment can level the total power generation amount of the plurality of solar cell modules 8a, 8f, 8k, and 8r by temporally operating the plurality of solar cell modules in a coordinated manner.

  That is, as shown in FIG. 22, each of the solar cell modules 8a, 8f, 8k, and 8r loses power generation immediately before the snow 10 is dropped, but another solar cell module generates power at any moment. As a result, the total amount of power generation does not change, and fluctuations in the amount of power generation can be suppressed.

  In addition, when the snow 10 is not falling, like the first embodiment, the solar power generation apparatus according to the present embodiment has a space that ensures wind resistance performance by the environment measuring device 5 measuring the wind direction and the like. Cooperative operation can be performed.

  The environment measuring device 5 may measure the amount of snowfall as an environmental condition where a plurality of solar cell modules 8 are installed. Here, the amount of snowfall is the amount of snow falling per unit time. The amount of snow is the total amount of snow that has fallen. For example, when the previous day's snow remains, the amount of snow is present even if the current amount of snowfall is zero. The environment measuring device 5 measures the amount of snowfall and outputs the measurement result to the arithmetic device 6. Based on the amount of snowfall measured by the environment measuring device 5, the arithmetic unit 6 estimates, for example, the current amount of snow, and each of the plurality of solar cell modules 8a to 8v should ensure stable power generation. A target elevation angle for every predetermined time is calculated.

  The solar power generation device according to the present invention can be used for a solar power generation device including a plurality of solar cell modules.

DESCRIPTION OF SYMBOLS 1 Solar cell array 2 Elevation angle variable device 3 Azimuth angle variable device 4 Basic 5 Environment measuring device 6 Arithmetic device 7, 7a-7f Direction control device 8, 8a-8v Solar cell module 9a-9e Wind shield device 10 Snow

Claims (9)

A plurality of solar cell modules;
An environmental condition measurement unit for measuring environmental conditions of a place where the plurality of solar cell modules are installed;
Based on the environmental conditions measured by the environmental condition measurement unit, a calculation unit that calculates a target elevation angle to be made by each of the plurality of solar cell modules;
Based on the target elevation angle calculated by the calculation unit, an elevation angle control unit that controls the elevation angle of each of the plurality of solar cell modules;
Equipped with a,
The calculation unit is configured to secure the required power generation amount based on the environmental condition measured by the environmental condition measurement unit and the power generation amount of each of the plurality of solar cell modules. A photovoltaic power generation apparatus characterized by calculating a target elevation angle to be performed by each .   When calculating the target elevation angle, the calculation unit determines the current elevation angle based on the environmental conditions measured by the environmental condition measurement unit for the solar cell module that is determined not to need to be changed. The photovoltaic power generation apparatus according to claim 1, wherein the target elevation angle is calculated so as to be maintained. The environmental condition measurement unit measures a wind direction as an environmental condition of a place where the plurality of solar cell modules are installed,
The calculation unit calculates a target elevation angle to be made by each of the plurality of solar cell modules based on the wind direction measured by the environmental condition measurement unit so as to ensure the required wind resistance performance. The solar power generation device according to claim 1 or 2. The environmental condition measurement unit measures the wind speed as the environmental condition of the place where the plurality of solar cell modules are installed,
The calculation unit calculates a target elevation angle that each of the plurality of solar cell modules should perform based on the wind direction and the wind speed measured by the environmental condition measurement unit so as to ensure the required wind resistance performance. The solar power generation device according to claim 3, wherein The environmental condition measuring unit measures the amount of solar radiation as the environmental condition of the place where the plurality of solar cell modules are installed,
  The calculation unit calculates a target elevation angle that each of the plurality of solar cell modules should make based on the amount of solar radiation measured by the environmental condition measurement unit so as to secure a necessary power generation amount. The solar power generation device according to any one of claims 1 to 4. The environmental condition measurement unit measures the direction of the sun as the environmental condition of the place where the plurality of solar cell modules are installed,
  The calculation unit calculates a target elevation angle to be made by each of the plurality of solar cell modules based on the direction of the sun measured by the environmental condition measurement unit so as to secure a necessary power generation amount. The solar power generation device according to any one of claims 1 to 5. The calculation unit calculates a target elevation angle for each predetermined time to be performed by each of the plurality of solar cell modules based on the environmental condition measured by the environmental condition measurement unit so as to ensure a stable power generation amount. The solar power generation device according to any one of claims 1 to 6, wherein: The solar power generation device according to claim 7, wherein the environmental condition measurement unit measures the amount of snow as an environmental condition of a place where the plurality of solar cell modules are installed. The calculation unit calculates a target azimuth angle of each of the plurality of solar cell modules based on the environmental conditions measured by the environmental condition measurement unit,
The azimuth angle control unit that controls the azimuth angle of each of the plurality of solar cell modules based on the target azimuth angle calculated by the calculation unit. The solar power generation device according to item.

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