JP2008021683A - Solar power generation apparatus and solar power generation method - Google Patents

Abstract

Provided are a solar power generation device and a solar power generation method capable of preventing a power generation amount from being reduced by deposits even when installed in an area where volcanic ash and sand are deposited.
A solar power generation panel that receives sunlight to generate power, a solar radiation amount measurement unit that measures the amount of solar radiation, a power generation amount measurement unit that measures the power generation amount of the solar power generation panel, A power generation amount storage unit 23a that stores the relationship between the amount of solar radiation and the amount of power generation is provided. Further, the solar radiation amount reading unit 24 that reads the power generation amount corresponding to the solar radiation amount measured by the solar radiation amount measurement unit 21 from the power generation amount storage unit 23a, and the power generation amount measured by the power generation amount measurement unit 22 are read by the solar radiation amount reading unit 24. An attenuation amount determination unit 25 that determines whether or not the power generation amount is attenuated by a predetermined ratio or more, and an elevation angle control unit 26 that controls the elevation angle of the photovoltaic power generation panel according to the determination result of the attenuation amount determination unit 25 are provided. .
[Selection] Figure 4

Description

  The present invention relates to a photovoltaic power generation apparatus and a photovoltaic power generation method.

2. Description of the Related Art Conventionally, a solar power generation apparatus that generates power by receiving sunlight with a solar power generation panel is known. Further, as a technique for improving this solar power generation apparatus, a technique for changing the direction of the solar power generation panel according to the direction in which the sun is positioned is known (see Patent Document 1).
JP 2004-362866 A

  However, in the technique described in Patent Document 1, when a solar power generation device is installed in a region where the volcanic ash falls or in a desert, volcanic ash or sand accumulates on the solar power generation panel, and the power generation amount decreases. There was a problem.

  The present invention has been made in view of the above circumstances. The purpose of the present invention is to prevent the power generation amount from being reduced by deposits even when installed in an area where volcanic ash and sand are deposited. A photovoltaic power generation apparatus and a photovoltaic power generation method are provided.

The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is directed to a solar power generation means for receiving sunlight to generate electric power, and an amount of solar radiation for measuring the amount of solar radiation. Corresponding to the amount of solar radiation measured by the measuring means, the power generation amount measuring means for measuring the power generation amount of the solar power generation means, the power generation amount storage means for storing the relationship between the solar radiation amount and the power generation amount, and the solar radiation amount measuring means A solar radiation amount reading means for reading out the power generation amount to be read from the power generation amount storage means, and whether or not the power generation amount measured by the power generation amount measuring means is attenuated by a predetermined ratio or more from the power generation amount read by the solar radiation amount reading means A photovoltaic power generation apparatus comprising: an attenuation amount determining unit for determining; and a deposit removing unit for removing deposits deposited on the solar power generation unit according to a determination result of the attenuation amount determining unit. .
According to the present invention, the deposit can be removed by the deposit removing means even when the deposit is deposited on the photovoltaic power generation means, so that the photovoltaic power generation apparatus is installed in the area where the volcanic ash falls or in the desert. Even in this case, it is possible to prevent the power generation amount from being reduced by the deposit.

Further, the invention described in claim 2 is characterized in that the deposit removing means includes an elevation angle control means for controlling an elevation angle of the solar power generation means according to a determination result of the attenuation amount determination means. The solar power generation device according to Item 1.
According to the present invention, when deposits are deposited on the solar power generation means, the deposits deposited on the solar power generation means can be dropped by changing the elevation angle of the solar power generation means.

According to a third aspect of the present invention, the elevation angle control unit causes the attenuation when the power generation amount measured by the power generation amount measurement unit is attenuated by a predetermined ratio or more from the power generation amount read by the solar radiation amount reading unit. 3. The photovoltaic power generation apparatus according to claim 2, wherein when the amount determination means determines, the elevation angle is controlled to be 0 ° or less. 4.
According to the present invention, when deposits are deposited on the photovoltaic power generation means, the elevation angle of the photovoltaic power generation means is 0 ° or less, and therefore the deposits deposited on the photovoltaic power generation means can be dropped.

The invention according to claim 4 includes an elevation angle storage unit that stores a relationship between a timing and an elevation angle of the photovoltaic power generation unit in association with each other, and a timing specifying unit that specifies the current timing, and the elevation angle control. The means reads the elevation angle corresponding to the current time from the elevation angle storage means, and controls the elevation angle of the solar power generation means to the elevation angle. It is a solar power generation device.
According to the present invention, since the elevation angle of the solar power generation means can be changed according to the time, sunlight can be efficiently received by the solar power generation means according to the time.

In the invention according to claim 5, the deposit removing unit is configured such that the power generation amount measured by the power generation amount measuring unit is attenuated by a predetermined ratio or more from the power generation amount read by the solar radiation amount reading unit. The solar power generation apparatus according to any one of claims 1 to 4, further comprising a vibration control unit that vibrates the solar power generation unit when the attenuation amount determination unit determines.
According to the present invention, it is possible to shake off the deposits deposited on the photovoltaic power generation means by vibrating the photovoltaic power generation means, so that the amount of power generation is reduced by covering the photovoltaic power generation means with the deposits. Can be prevented.

In the invention described in claim 6, the deposit removing unit may be configured such that the power generation amount measured by the power generation amount measuring unit is attenuated by a predetermined ratio or more from the power generation amount read by the solar radiation amount reading unit. The solar power generation device according to any one of claims 1 to 5, further comprising a cleaning unit that cleans a light receiving surface of the solar power generation unit when the attenuation amount determination unit determines. .
According to the present invention, it is possible to remove the deposits deposited on the solar power generation means by cleaning the solar power generation means with the cleaning means. Can be prevented from decreasing.

  The invention according to claim 7 is a first step of receiving sunlight and generating electric power by means of solar power generation means, a second step of measuring the amount of solar radiation by means of solar radiation measurement means, A third step of measuring the power generation amount of the solar power generation means by the power generation amount measurement means; a fourth step of storing a relationship between the amount of solar radiation and the power generation amount in the power generation amount storage means; and the solar radiation amount measurement means. A fifth step of reading the power generation amount corresponding to the measured solar radiation amount from the power generation amount storage means by the solar radiation amount reading means, and the power generation amount measured by the power generation amount measuring means from the power generation amount read by the solar radiation amount reading means A sixth step for determining by the attenuation amount determining means whether or not it is attenuated by a predetermined rate or more; and deposit removal means for removing the deposit deposited on the solar power generation means in accordance with the determination result of the attenuation amount determining means A photovoltaic power generation method characterized by performing the seventh step to further removal.

In the present invention, the attenuation amount determining means determines whether or not the power generation amount measured by the power generation amount measuring means is attenuated by a predetermined ratio or more from the power generation amount read by the solar radiation amount reading means, and the determination result of the attenuation amount determining means Accordingly, the deposit deposited on the solar power generation means is removed by the deposit removing means.
As a result, even if deposits are deposited on the solar power generation means, the deposits can be removed, so even if the photovoltaic power generation device is installed in a region where the volcanic ash falls or in the desert, It is possible to prevent the power generation amount from decreasing.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a configuration of a solar power generation device 10 according to an embodiment of the present invention. FIG. 2 is a perspective view showing the structure of the solar power generation device 10, and FIG. 3 is a front view showing the structure of the solar power generation device 10. The solar power generation device 10 is installed in an area where deposits such as volcanic ash and sand accumulate on the solar power generation panel 11 in an area where volcanic ash falls or an area where a sandstorm occurs.
As shown in FIG. 1, the solar power generation device 10 includes a solar power generation panel 11 (solar power generation means), a solar power generation panel support plate 12, a drive unit 13, a rotating shaft 14, a mount 15, and a wiper 16. Yes.

The photovoltaic power generation panel 11 has a rectangular film shape (see FIG. 3), and generates light by receiving light such as sunlight. As the solar power generation panel 11, a film-like solar cell with little decrease in power generation capability at high temperatures is used. The surface of the photovoltaic power generation panel 11 is coated with resin or the like.
The photovoltaic power generation panel support plate 12 has a rectangular flat plate shape, and the photovoltaic power generation panel 11 is attached on one surface of the flat plate.
The drive unit 13 has a U-shaped cross section (see FIG. 1). Both ends of the drive unit 13 are attached to the photovoltaic power generation panel support plate 12. The central portion of the drive unit 13 is attached to the gantry 15 so as to be driven by the rotation shaft 14.

The wiper 16 has a rod shape and removes deposits such as sand and volcanic ash deposited on the photovoltaic power generation panel. The wiper 16 is attached so as to be driven in a direction D1 which is perpendicular to the longitudinal direction and is horizontal to the light receiving surface of the photovoltaic panel 11. In the present embodiment, the wiper 16 is attached to the photovoltaic panel support plate 12 so that the longitudinal direction of the wiper 16 is parallel to the ground, but the present invention is not limited to this. For example, the wiper 16 may be attached to the photovoltaic power generation panel support plate 12 so that the longitudinal direction of the wiper 16 is perpendicular to the ground.
The mount 15 has a box shape and is installed on the ground or the like. A storage battery, a control device, and the like are installed inside the gantry 15. The storage battery stores the electric power generated by the solar power generation panel 11. In order to drive each part of the solar power generation device 10, the power stored in the storage battery may be used, or another power source such as an AC power source may be used. Moreover, the electric power stored in the storage battery may be output to the outside as DC power (for example, DC 12V), or may be output to the outside as AC power (for example, AC 100V). In addition, as a storage battery, a lead storage battery, a lithium ion battery, etc. can be used, for example.
The control device controls each part of the solar power generation device 10. Details of the control device will be described later.

  An angle formed by a direction a1 (see FIG. 1) horizontal to the ground on which the gantry 15 is installed and a direction a2 perpendicular to the light receiving surface of the photovoltaic power generation panel 11 is defined as an elevation angle θ. In the solar power generation device 10 according to the present embodiment, the elevation angle θ can be changed from −15 ° to 60 ° by driving the drive unit 13.

FIG. 4 is a block diagram showing a configuration of the control device 20 according to the embodiment of the present invention. The control device 20 is installed in the gantry 15 of the solar power generation device 10.
The control device 20 includes a solar radiation amount measuring unit 21 (a solar radiation amount measuring unit), a power generation amount measuring unit 22 (a power generation amount measuring unit), a storage unit 23, a solar radiation amount reading unit 24 (a solar radiation amount reading unit), and an attenuation amount determining unit 25. (Attenuation amount determining means), elevation angle control unit 26 (deposit removal means, elevation angle control means), timing unit 27, vibration control unit 28 (deposit removal means, vibration control means), wiper control unit 29 (deposit removal means) Cleaning means). The storage unit 23 includes a power generation amount storage unit 23a (power generation amount storage unit) and an elevation angle storage unit 23b (elevation angle storage unit).
The solar radiation amount measuring unit 21 measures the solar radiation amount received by the solar power generation panel (see FIG. 1). The power generation amount measurement unit 22 measures the power generation amount of the photovoltaic power generation panel.

FIG. 5 is a diagram illustrating an example of information stored in the power generation amount storage unit 23a according to the embodiment of the present invention. The power generation amount storage unit 23a stores the relationship between the solar radiation amount and the power generation amount. In FIG. 5, the X axis indicates the amount of solar radiation (kW / m ² ), and the Y axis indicates the amount of power generation (kW). The straight line g1 indicates the relationship between the amount of solar radiation and the amount of power generated when no deposits are deposited on the solar power generation panel 11, and is represented by the equation Y = A · X (A is a constant).

  FIG. 6 is a diagram illustrating an example of information stored in the elevation angle storage unit 23b according to the embodiment of the present invention. The elevation angle storage unit 23b stores the relationship between the time and the elevation angle of the photovoltaic power generation panel in association with each other. As shown in FIG. 6, the elevation angle storage unit 23b stores elevation angles during summer, intermediate period, winter, and cleaning. Here, the summer season means, for example, a period of 1.5 months before and after the summer solstice (a period from May 8 to August 8). The winter season refers to a period of 1.5 months before and after the winter solstice (a period from November 8 to February 8). The intermediate period means a period other than the summer and winter periods (a period from February 9 to May 7 and a period from August 9 to November 7).

Returning to FIG. 4, the amount of solar radiation reading unit 24, when the amount of insolation solar radiation measuring unit 21 has measured is X _1, based on the information generation amount storage unit 23a is stored (see FIG. 5) reads the power generation amount _{Y 1} corresponding to the solar radiation _{X 1.}
Attenuation amount determination unit 25, whether the power generation amount measurement unit 22 is attenuated generation amount X ₁ measured predetermined proportion of the power generation amount Y ₁ read the solar radiation amount reading unit 24 (e.g., 20%) or more judge.

Elevation control unit 26, the attenuation amount determination and the power generation amount measuring unit 22 is attenuated generation amount X ₁ measured predetermined proportion of the power generation amount Y ₁ read the solar radiation amount reading unit 24 (e.g., 20%) or more When the part 25 determines, the elevation angle of the photovoltaic power generation panel 11 is controlled to be 0 ° or less (for example, −15 °). More specifically, the elevation angle control unit 26 reads the elevation angle corresponding to the current time from the elevation angle storage unit 23b (see FIG. 6), and controls the elevation angle θ of the photovoltaic power generation panel 11 to the elevation angle.

The time measuring unit 27 specifies the current date. In addition, the timer 27 includes a summer period (May 8 to August 8), a winter period (November 8 to February 8), and an intermediate period (February). The period from 9th to May 7th, and the period from 9th August to 7th November), based on which period the current date belongs to Identify whether the season is winter or intermediate.
Vibration control unit 28, when the power generation amount of the power generation amount measuring unit 22 has measured is determined that the attenuation amount determination portion 25 is attenuated from the power generation amount Y ₁ read the solar radiation amount reading unit 24 for example 20% or more, The solar power generation panel 11 is slightly vibrated.

Wiper control unit 29, the power generation amount measuring section 22 is the ratio of the power generation amount Y ₁ in which the power generation amount is read solar radiation amount reading unit 24 as measured in the predetermined (e.g., 20%) to be attenuated more than the attenuation amount determination portion 25 Is determined, cleaning is performed by moving the wiper 16 in the vertical direction (direction D in FIG. 1) with respect to the light receiving surface of the photovoltaic power generation panel 11.

FIG. 7 is a flowchart showing processing of the solar power generation device 10 according to the embodiment of the present invention. First, the time measuring unit 27 specifies the current date. Then, the time measuring unit 27 determines the current time based on whether the current date belongs to summer, intermediate or winter (step S01).
If the current date belongs to the summer period (the period from May 8 to August 8), it is determined as “summer” in step S01, and the process proceeds to step S02. The elevation angle control unit 26 reads the summer elevation angle (60 °) from the elevation angle storage unit 23b (see FIG. 6). Then, as shown in FIG. 8, the elevation angle control unit 26 sets the elevation angle θ of the photovoltaic power generation panel 11 to 60 ° (step S02), and proceeds to step S05.

On the other hand, if the current date belongs to the period of the interim period (the period from February 9 to May 7 and the period from August 9 to November 7), in step S01, “intermediate It determines with "period", and progresses to step S03. The elevation angle control unit 26 reads the elevation angle (45 °) of the intermediate period from the elevation angle storage unit 23b (see FIG. 6). Then, as shown in FIG. 9, the elevation angle control unit 26 sets the elevation angle θ of the photovoltaic power generation panel 11 to 45 ° (step S03), and proceeds to step S05.
On the other hand, if the current date belongs to the winter period (the period from November 8 to February 8), it is determined as “winter” in step S01, and the process proceeds to step S04. The elevation angle control unit 26 reads the elevation angle (30 °) in winter from the elevation angle storage unit 23b (see FIG. 6). Then, as shown in FIG. 10, the elevation angle control unit 26 sets the elevation angle θ of the photovoltaic power generation panel 11 to 30 ° (step S04), and proceeds to step S05.

The solar radiation amount measuring unit 21, solar panels 11 to measure the solar radiation X ₁ of the sunlight that is received (step S05). Next, the power generation amount measuring section 22 measures the amount of power generation _{Z 1} being generated by solar panels 11 (step S06). Note that either the processing of step S05 or step S06 may be performed first or simultaneously.

The solar radiation amount reading unit 24, based on the power generation amount storage unit 23a (see FIG. 5), reads out the power generation amount _{Y 1} corresponding to the amount of sunlight _{X 1} measured in step S05. Next, the attenuation amount determination unit 25 determines the power generation amount Z ₁ measured in step S06 is a predetermined ratio than the amount of power generation Y ₁ (e.g., 20%) whether is attenuated more (step S07) . Here, it is determined whether or not Z ₁ ≦ 0.8 · Y ₁ . In the present embodiment, the case where the predetermined ratio is 20% is described as an example, but the present invention is not limited to this. An administrator or the like of the solar power generation device 10 can set an arbitrary value as the predetermined ratio.

When the power generation amount Z ₁ is not attenuated predetermined ratio or more than the power generation amount Y ₁ makes a judgment of "NO" in step S07, the process proceeds to step S01.
On the other hand, when the amount of power generation Z ₁ is attenuated more than a predetermined ratio than the power generation amount Y ₁ makes a judgment of "YES" in step S07, the process proceeds to step S08. The elevation angle control unit 26 reads the elevation angle (−15 °) at the time of cleaning from the elevation angle storage unit 23b (see FIG. 6). And the elevation angle control part 26 makes the elevation angle of the photovoltaic power generation panel 11 -15 degrees as shown in FIG. 11 (step S08), and progresses to step S09.

Then, the vibration control unit 28 slightly vibrates the photovoltaic power generation panel 11 (step S09). Next, the wiper drive unit 29 drives the wiper 16 to remove deposits on the photovoltaic power generation panel 11 (step S10).
Next, the time measuring unit 27 determines whether or not a predetermined time (for example, 5 minutes) has elapsed since the elevation angle of the photovoltaic power generation panel 11 was set to −15 ° in step S08 (step S11). If the predetermined time has not elapsed, “NO” is determined in the step S11, and the process proceeds to a step S09. On the other hand, if the predetermined time has elapsed, “YES” is determined in the step S11, and the process proceeds to the step S01.

In the above-described embodiment, the elevation angle of the photovoltaic power generation panel 11 at the time of cleaning is set to −15 °. However, the present invention is not limited to this, and an arbitrary angle in the range of 0 ° to −90 °. Can be used.
In the description of FIG. 7, when it is determined in step S07 that the amount of power generation is attenuated by a predetermined rate or more, the elevation angle is set to −15 ° (step S08), and the photovoltaic power generation panel 11 is slightly vibrated (step S08). In step S09), the wiper 16 is driven (step S10). However, the present invention is not limited to this, and any one or two of steps S08 to S10 may be performed.

  In the embodiment described above, the case where the elevation angle of the photovoltaic power generation panel 11 is controlled by classifying the year into three periods of summer, winter, and intermediate period has been described, but the present invention is not limited to this. One year may be classified into two periods or four or more periods, and the elevation angle of the photovoltaic power generation panel 11 may be controlled. Moreover, according to the area which installs the solar power generation device 10, you may make it set the classification of a time, the length of a time, and an elevation angle.

In the above-described embodiment, the photovoltaic power generation panel 11 may be rotated about the axis perpendicular to the ground as the rotation axis toward the direction in which the sun is positioned while maintaining the set elevation angle.
Moreover, although embodiment mentioned above demonstrated the case where the elevation angle of the photovoltaic power generation panel 11 was controlled according to time, it is not limited to this, You may make it control an azimuth angle with an elevation angle. Here, the azimuth angle refers to an angle formed by a predetermined direction (for example, north) and a direction perpendicular to the light receiving surface of the photovoltaic power generation panel 11 on a horizontal plane.

FIG. 12 is a diagram illustrating an example of a circuit configuration for realizing the control device 20 (FIG. 4) according to the embodiment of the present invention. This circuit comprises an electric motor 31, a vibrator 32, switch controllers 33 and 34, a pyranometer 35, a voltmeter 36, a timer 37, an angle meter 38, an AC power supply 39, a fuse 40, and switches SW01 to SW12.
The electric motor 31 corresponds to the elevation angle control unit 26 in FIG. 4 and controls the elevation angle of the photovoltaic power generation panel 11. The vibrator 32 corresponds to the vibration control unit 28 in FIG. 4 and slightly vibrates the photovoltaic power generation panel 11.

  The switch controller 33 controls the opening / closing of the switch SW01 in accordance with the opening / closing of the switches SW03 to SW06. The switches SW03 to SW06 are closed during the intermediate period, summer period, winter period, and cleaning, respectively. The switch controller 34 controls the opening / closing of the switch SW02 in accordance with the opening / closing of the switches SW07 to SW12. The switches SW07, SW08, and SW10 are closed according to the states of the timer 37, the pyranometer 35, and the voltmeter 36, respectively. The switches SW09, SW11, and SW12 are manually closed by an administrator or the like when the vibrator 32 is driven.

The solar radiation meter 35 corresponds to the solar radiation amount measuring unit 21 in FIG. 4 and measures the solar radiation amount received by the solar power generation panel 11. The voltmeter 36 corresponds to the power generation amount measurement unit 22 in FIG. 4 and measures the power generation amount generated by the solar power generation panel 11.
The timer 37 corresponds to the time measuring unit 27 in FIG. 4 and is used for time specification and time measurement. The goniometer 38 corresponds to the elevation angle control unit 26 in FIG. 4 and measures the elevation angle of the photovoltaic power generation panel 11.
The AC power supply 39 supplies AC power (for example, AC 100 V) to each part constituting the circuit. The fuse 40 protects the circuit by interrupting the current flow when a current of a predetermined current value or more flows in the circuit.

  In the photovoltaic power generation apparatus 10 according to the embodiment of the present invention, deposits such as volcanic ash and sand accumulate on the photovoltaic power generation panel, the amount of solar radiation received by the photovoltaic power generation panel decreases, and the amount of power generated by the photovoltaic power generation panel. Since the elevation angle of the solar panel is controlled to be 0 ° or less when the value of the solar panel decreases, the volcanic ash and sand deposited on the solar panel can be removed and the power generation amount can be recovered. If the solar power generation device 10 according to the embodiment of the present invention is used, it is not necessary for the administrator to clean and remove volcanic ash and sand deposited on the solar power generation panel, thereby reducing the management burden on the administrator and the like. be able to.

  In the embodiment described above, the function of each unit of the control device 20 in FIG. 4 or a program for realizing a part of the function is recorded on a computer-readable recording medium and recorded on the recording medium. The photovoltaic power generation apparatus 10 may be controlled by causing the computer system to read and execute the program. Here, the “computer system” includes an OS and hardware such as peripheral devices.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

It is a side view which shows the structure of the solar power generation device 10 by embodiment of this invention. It is a perspective view which shows the structure of the solar power generation device 10 by embodiment of this invention. It is a front view which shows the structure of the solar power generation device 10 by embodiment of this invention. It is a block diagram which shows the structure of the control apparatus 20 by embodiment of this invention. It is a figure which shows an example of the information which the electric power generation amount memory | storage part 23a by embodiment of this invention memorize | stores. It is a figure which shows an example of the information which the elevation angle memory | storage part 23b by embodiment of this invention memorize | stores. It is a flowchart which shows the process of the solar power generation device 10 by embodiment of this invention. It is a side view which shows the structure of the solar power generation device 10 (summer season) by embodiment of this invention. It is a side view which shows the structure of the solar power generation device 10 (interim period) by embodiment of this invention. It is a side view which shows the structure of the solar power generation device 10 (winter season) by embodiment of this invention. It is a side view which shows the structure of the solar power generation device 10 (at the time of cleaning) by embodiment of this invention. It is a figure which shows an example of the circuit structure for implement | achieving the control apparatus 20 (FIG. 4) by embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Solar power generation device, 11 ... Solar power generation panel, 12 ... Photovoltaic power generation panel support plate, 13 ... Drive part, 14 ... Rotating shaft, 15 ... Mount, 16 ... Wiper, 20 ... Control device, 21 ... Solar radiation amount measuring unit, 22 ... Power generation amount measuring unit, 23 ... Storage unit, 23a ... Power generation amount storage unit, 23b ... Elevation angle storage unit, 24 ... solar radiation amount reading unit, 25 ... attenuation amount determination unit, 26 ... elevation angle control unit, 27 ... timing unit, 28 ... vibration control unit, 29 ... wiper Control unit, 31 ... electric motor, 32 ... vibrator, 33, 34 ... switch controller, 35 ... irradiometer, 36 ... voltmeter, 37 ... timer, 38 ... Angle meter, 39 ... AC power supply, 40 ... Fuse, SW01 to SW12 switch

Claims (7)

Solar power generation means for receiving sunlight to generate electricity;
A solar radiation amount measuring means for measuring the solar radiation amount;
Power generation amount measuring means for measuring the power generation amount of the solar power generation means;
Power generation amount storage means for storing the relationship between the amount of solar radiation and the amount of power generation;
A solar radiation amount reading means for reading out the power generation amount corresponding to the solar radiation amount measured by the solar radiation amount measuring means from the power generation amount storage means;
Attenuation amount determining means for determining whether the power generation amount measured by the power generation amount measuring means is attenuated by a predetermined ratio or more from the power generation amount read by the solar radiation amount reading means;
Deposit removal means for removing deposits deposited on the solar power generation means according to the determination result of the attenuation amount determination means;
A solar power generation apparatus comprising:   The solar power generation apparatus according to claim 1, wherein the deposit removing unit includes an elevation angle control unit that controls an elevation angle of the solar power generation unit according to a determination result of the attenuation amount determination unit.   The elevation angle control unit is configured to determine the elevation angle when the attenuation amount determination unit determines that the power generation amount measured by the power generation amount measurement unit is attenuated by a predetermined rate or more from the power generation amount read by the solar radiation amount reading unit. The solar power generation device according to claim 2, wherein the solar power generation device is controlled so as to be 0 ° or less. An elevation angle storage means for storing the relationship between the timing and the elevation angle of the photovoltaic power generation means in association with each other;
A time specifying means for specifying the current time,
The said elevation angle control means reads the elevation angle corresponding to the present | current time from the said elevation angle memory | storage means, and controls the elevation angle of the said solar power generation means to the elevation angle, The Claim of Claim 1 characterized by the above-mentioned. The solar power generation device described in 1.   The deposit removing means, when the attenuation amount determining means determines that the power generation amount measured by the power generation amount measuring means is attenuated by a predetermined ratio or more from the power generation amount read by the solar radiation amount reading means, The solar power generation device according to any one of claims 1 to 4, further comprising vibration control means for vibrating the solar power generation means.   The deposit removing means, when the attenuation amount determining means determines that the power generation amount measured by the power generation amount measuring means is attenuated by a predetermined ratio or more from the power generation amount read by the solar radiation amount reading means, The solar power generation device according to any one of claims 1 to 5, further comprising a cleaning unit that cleans a light receiving surface of the solar power generation unit. A first step of receiving sunlight and generating power by solar power generation means;
A second step of measuring the solar radiation amount by solar radiation measuring means;
A third step of measuring a power generation amount of the solar power generation means by a power generation amount measurement means;
A fourth step of storing the relationship between the solar radiation amount and the power generation amount in the power generation amount storage means;
A fifth step of reading out the power generation amount corresponding to the solar radiation amount measured by the solar radiation amount measuring means from the power generation amount storage means by the solar radiation amount reading means;
A sixth step of determining by the attenuation amount determining means whether or not the power generation amount measured by the power generation amount measuring means is attenuated by a predetermined rate or more from the power generation amount read by the solar radiation amount reading means;
A seventh step of removing deposits deposited on the solar power generation means by the deposit removal means according to the determination result of the attenuation amount determination means;
A photovoltaic power generation method characterized in that

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