CN114879751A - Photovoltaic power generation control method, system and photovoltaic power station - Google Patents

Abstract

The invention discloses a photovoltaic power generation control method, system and photovoltaic power station. The method includes: acquiring at least two adjustment angles of a reflective member of a photovoltaic power station, wherein the reflective member is arranged between the front and rear photovoltaic modules of a photovoltaic module array, and is used It is used to reflect sunlight to the photovoltaic module array of the photovoltaic power station; adjust the reflector to each adjustment angle in turn and continue for a preset period of time; determine the target adjustment angle of the reflector according to the corresponding power generation of the photovoltaic module array at each adjustment angle; control the reflector Adjust to the target adjustment angle. The method of the present invention determines the corresponding power generation of the photovoltaic module array under each adjustment angle of the reflective member by adjusting the reflective member to each adjustment angle in turn for a preset period of time, and determines from each adjustment angle that the reflective member can maximize the reflected sunlight To the target adjustment angle of the photovoltaic module, control the reflector to adjust to the target adjustment angle, and increase the power generation of the photovoltaic module array.

Description

Photovoltaic power generation control method, system and photovoltaic power station

technical field

The invention relates to the technical field of solar power generation, in particular to a photovoltaic power generation control method, system and photovoltaic power station.

Background technique

Photovoltaic modules are formed by connecting several single solar cells in series and parallel and sealing them tightly. At present, photovoltaic modules are installed on photovoltaic supports to generate electricity. The photovoltaic supports are generally arrays in rows, and photovoltaic modules are installed on the photovoltaic supports to form a regular array of components. In addition, since the installation directions of the module arrays are roughly the same, in order to prevent the front and rear PV module arrays from blocking the sunlight from each other, a certain gap will be reserved between the arrays to ensure that the modules can obtain sufficient sunlight and generate more electricity. However, the gaps left between the arrays both take up a lot of land space and waste that part of the sunlight in the gaps.

The above content is only used to assist the understanding of the technical solutions of the present invention, and does not mean that the above content is a related art.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a photovoltaic power generation control method, system and photovoltaic power station, aiming at solving the problem that the gaps reserved between the arrays not only occupy a large land space, but also waste the part of sunlight in the gaps.

In order to achieve the above object, the present invention provides a photovoltaic power generation control method, the photovoltaic power generation control method is applied to a photovoltaic power station, and the photovoltaic power generation control method includes:

acquiring at least two adjustment angles of the reflective member of the photovoltaic power station, wherein the reflective member is disposed between the front and rear photovoltaic assemblies of the photovoltaic assembly array, and is used for reflecting sunlight to the photovoltaic assembly array of the photovoltaic power station;

Adjust the reflector to each of the adjustment angles in turn and continue for a preset period of time;

Determine the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array at each adjustment angle;

Control the reflector to adjust to the target adjustment angle.

Optionally, the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array at each adjustment angle includes:

Acquiring the power generation corresponding to the photovoltaic modules adjacent to the reflective member under each adjustment angle of the reflective member;

The target adjustment angle of the reflector is determined according to the power generation amount.

Optionally, the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array at each adjustment angle includes:

Acquiring the adjustment angle corresponding to the maximum power generation among the power generation corresponding to the photovoltaic module array under each adjustment angle of all the reflectors;

According to the adjustment angle corresponding to the maximum power generation, the target adjustment angle of all the reflectors is determined.

Optionally, the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array at each adjustment angle includes:

Obtain the geographic location information and the current time of the photovoltaic power station;

The target adjustment angle of the reflector is determined according to the geographic location information, the current time, and the power generation corresponding to the photovoltaic module array under each adjustment angle.

Optionally, the photovoltaic components of the photovoltaic component array are rotatably arranged on the tracking bracket, and the photovoltaic power generation control method further includes:

Obtain the geographic location information and the current time of the photovoltaic power station;

determining the target angle of the photovoltaic module according to the geographic location information and the current time;

The photovoltaic assembly is controlled to be adjusted to the target angle, and the step of acquiring at least two adjustment angles of the reflector of the photovoltaic power station is performed.

Optionally, according to the geographic location information and the current time, the step of determining the target angle of the photovoltaic module includes:

The geographic location information is input into a preset astronomical algorithm to obtain the target angle of the photovoltaic bifacial module at the current time.

In addition, in order to achieve the above object, the present invention also provides a photovoltaic power generation control system, the photovoltaic power generation control system includes:

an acquisition module for acquiring at least two adjustment angles of the reflective member of the photovoltaic power generation control system, wherein the reflective member is arranged between the front and rear photovoltaic modules of the photovoltaic module array, and is used for reflecting sunlight to the Photovoltaic module array of photovoltaic power generation control system;

an adjustment module, configured to adjust the reflective member to each adjustment angle in sequence and continue for a preset duration;

a determining module, configured to determine the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array under each adjustment angle;

The control module is used for controlling the reflector to adjust to the target adjustment angle.

In addition, in order to achieve the above object, the present invention also provides a photovoltaic power generation control system, the photovoltaic power generation control system includes: a memory, a processor, and a photovoltaic power generation control system stored in the memory and running on the processor A program, when the photovoltaic power generation control program is executed by the processor, implements each step of the photovoltaic power generation control method as described above.

In addition, in order to achieve the above object, the present invention also provides a photovoltaic power station, the photovoltaic power station includes: a photovoltaic module array, and a reflective support assembly is arranged between the front and rear photovoltaic modules of the photovoltaic module array;

a reflective member, which is rotatably arranged on the reflective support assembly;

and a controller, wherein the photovoltaic assembly array and the reflective support assembly are respectively connected to the controller.

Optionally, the photovoltaic modules arranged in the photovoltaic module array adopt photovoltaic double-sided modules.

The photovoltaic power generation control method, system and photovoltaic power station proposed by the present invention are based on the reflective elements arranged on the front and rear photovoltaic elements of the photovoltaic element array, so that the reflective elements are used to reflect sunlight to the photovoltaic element array of the photovoltaic power station, so as to realize the rational use of photovoltaic elements At the same time, the gap between the module arrays increases the sunlight incident on the photovoltaic modules and improves the power generation of the photovoltaic module arrays. In addition, by obtaining at least two adjustment angles of the reflective members of the photovoltaic power station, the reflective members are adjusted to each adjustment angle in turn and Continue for a preset period of time, so that the reflective element continues to reflect sunlight to the photovoltaic modules for a preset period of time at each adjustment angle, and then determines the corresponding power generation of the photovoltaic element array under each adjustment angle of the reflective element, according to the corresponding adjustment angle of the photovoltaic element array. Determine the target adjustment angle of the reflective element to determine the target adjustment angle of the reflective element that can maximize the reflection of sunlight to the photovoltaic module from each adjustment angle, and control the reflective element to adjust to the target adjustment angle to maximize the reflective element. Reflect sunlight to photovoltaic modules, thereby increasing the power generation of photovoltaic module arrays.

Description of drawings

1 is a schematic structural diagram of a terminal device involved in various embodiments of the photovoltaic power generation control method of the present invention;

Fig. 2 is the first structural schematic diagram of the photovoltaic power station of the present invention;

Fig. 3 is the second structural schematic diagram of the photovoltaic power station of the present invention;

FIG. 4 is a schematic flowchart of the first embodiment of the photovoltaic power generation control method of the present invention;

5 is a schematic diagram of adjusting the reflector to each adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention;

FIG. 6 is a first schematic flowchart of determining a target adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention;

7 is a schematic flowchart of determining a target adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention;

FIG. 8 is a schematic flowchart of the second embodiment of the photovoltaic power generation control method of the present invention;

FIG. 9 is a schematic diagram of adjusting the angle of adjustment of the photovoltaic assembly and the reflective member in the second embodiment of the photovoltaic power generation control method of the present invention;

FIG. 10 is a schematic diagram of the module composition of the photovoltaic power generation control system of the present invention.

Description of reference numbers:

label name label name 11 Photovoltaic modules 12 Photovoltaic bracket 2 Reflective support components twenty one support column twenty two first turning mechanism 3 Reflector 4 controller 121 second turning mechanism

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

The present invention provides a photovoltaic power generation control method, the photovoltaic power generation control method is applied to a photovoltaic power station, and the photovoltaic power generation control method includes:

acquiring at least two adjustment angles of the reflective member of the photovoltaic power station, wherein the reflective member is disposed between the front and rear photovoltaic assemblies of the photovoltaic assembly array, and is used for reflecting sunlight to the photovoltaic assembly array of the photovoltaic power station;

Adjust the reflector to each of the adjustment angles in turn and continue for a preset period of time;

Determine the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array at each adjustment angle;

Control the reflector to adjust to the target adjustment angle.

The photovoltaic power generation control method of the present invention is based on the reflective elements arranged on the front and rear photovoltaic elements of the photovoltaic element array, so that the reflective elements are used to reflect sunlight to the photovoltaic element array of the photovoltaic power station, so as to realize rational use of the gaps between the photovoltaic element arrays and at the same time , increase the sunlight incident on the photovoltaic modules, and improve the power generation of the photovoltaic module array. In addition, by obtaining at least two adjustment angles of the reflective members of the photovoltaic power station, the reflective members are adjusted to each adjustment angle in turn and continue for a preset period of time, so as to make The reflector continues to reflect sunlight to the photovoltaic modules for a preset period of time at each adjustment angle, and then determines the corresponding power generation of the photovoltaic module array under each adjustment angle of the reflector, and determines the reflector according to the corresponding power generation of the photovoltaic module array at each adjustment angle. To determine the target adjustment angle of the reflector to maximize the reflection of sunlight to the photovoltaic module from each adjustment angle, and to control the reflector to adjust to the target adjustment angle, so that the reflector can maximize the reflection of sunlight to the photovoltaic module, thereby Increase the power generation of photovoltaic module arrays.

In the following description, suffixes such as "module", "component" or "unit" used to represent elements are used only to facilitate the description of the present invention, and have no specific meaning per se. Thus, "module", "component" or "unit" may be used interchangeably.

The terminal device of the embodiment of the photovoltaic power generation control method of the present invention may be a photovoltaic power station, a server controlling the photovoltaic power station, or a photovoltaic power generation control system controlling the photovoltaic power station.

Please refer to FIG. 1 , which is a schematic structural diagram of a terminal device involved in various embodiments of the photovoltaic power generation control method of the present invention.

As shown in FIG. 1 , the terminal device may include: a memory 101 and a processor 102 . Those skilled in the art can understand that the structural block diagram of the terminal shown in FIG. 1 does not constitute a limitation on the terminal, and the terminal may include more or less components than the one shown, or combine some components, or arrange different components. Wherein, the memory 101 stores an operating system and a photovoltaic power generation control program. The processor 102 is the control center of the terminal device, and the processor 102 executes the photovoltaic power generation control program stored in the memory 101 to realize the steps of each embodiment of the photovoltaic power generation control method of the present invention.

Optionally, the terminal device further includes a communication unit 103, and the communication unit 103 establishes data communication with other terminal devices through a network protocol (the data communication may be IP communication or a Bluetooth channel) to realize data transmission with other terminal devices.

Optionally, the terminal device may further include a display unit, the display unit includes a display panel, and the display panel may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), etc. Displays the user-browsed interface in the output.

It should be noted that, please refer to FIG. 2 , which is a schematic diagram of the first structure of the photovoltaic power station of the present invention. The photovoltaic power station includes:

A photovoltaic module array (shown in the figure), a reflective support assembly 2 is provided between the front and rear rows of photovoltaic modules 11 of the photovoltaic module array;

a reflective member 3, the reflective member 3 is rotatably arranged on the reflective support assembly 2;

A controller 4, the photovoltaic module array and the reflective support assembly 2 are respectively connected to the controller 4.

Optionally, the reflective support assembly 2 includes a support column 21 and a first rotation mechanism 22, the support column 21 is disposed between the photovoltaic modules in the front and rear rows of the photovoltaic module array 1, and the first rotation mechanism 22 One end is rotatably arranged on the support column 21 , the other end of the first rotating mechanism 22 is provided with the reflective member 3 , and the first rotating mechanism 22 is connected with the controller 4 so as to be controlled by the controller 4 The rotation angle of the first rotation mechanism 22 can change the inclination angle of the reflector 3 .

Optionally, the support column 21 adopts a telescopic rod, so that the height of the reflector 3 can be changed through the telescopic rod.

Optionally, the photovoltaic components 11 of the photovoltaic component array are arranged on the photovoltaic support 12 .

Optionally, please refer to FIG. 3. FIG. 3 is a second structural schematic diagram of the photovoltaic power station of the present invention. The photovoltaic support 12 adopts a photovoltaic tracking support, and the second rotation mechanism 121 in the photovoltaic tracking support is connected to the controller. 4 is connected to control the angle of the second rotating mechanism 121 and change the inclination angle of the photovoltaic module through the controller 4 .

Optionally, the photovoltaic assembly 11 adopts a photovoltaic double-sided assembly.

Based on the structural block diagram of the photovoltaic power station, various embodiments of the photovoltaic power generation control method of the present invention are proposed.

In the first embodiment, the present invention provides a photovoltaic power generation control method. Please refer to FIG. 4 , which is a schematic flowchart of the first embodiment of the photovoltaic power generation control method of the present invention. In this embodiment, the photovoltaic power generation control method includes the following steps:

Step S10, acquiring at least two adjustment angles of the reflective members of the photovoltaic power station, wherein the reflective members are arranged between the front and rear photovoltaic assemblies of the photovoltaic assembly array, and are used to reflect sunlight to the photovoltaics of the photovoltaic power station. component array;

Step S20, adjusting the reflector to each of the adjustment angles in turn and continuing for a preset duration;

In this embodiment, the photovoltaic modules are installed on the photovoltaic brackets to generate electricity, and the photovoltaic brackets are arranged to form a row-by-row array, and the photovoltaic modules are installed on the photovoltaic brackets to form a regularly arranged array of photovoltaic modules. The installation direction of the photovoltaic module array is roughly the same. In order to prevent the front and rear photovoltaic modules, that is, the adjacent photovoltaic modules from blocking the sunlight from each other, a certain gap will be reserved between the arrays to ensure that the photovoltaic modules can obtain sufficient sunlight, Generate more electricity. In order to make the photovoltaic modules receive more sunlight and increase the power generation of the photovoltaic modules, reflective parts are arranged between the front and rear photovoltaic modules of the photovoltaic module array, and the reflective parts are used to reflect sunlight to the photovoltaic module array of the photovoltaic power station.

Obtain at least two adjustment angles of the reflective member of the photovoltaic power generation system, and directly obtain the preset multiple angles as the at least two adjustment angles of the reflective member by presetting multiple adjustment angles, wherein the preset multiple adjustment angles It is the adjustment angle determined based on the analysis of experimental data. When the reflector is adjusted to the adjustment angle, the power generation of the photovoltaic module array can be increased with a high probability, so as to quickly determine the target adjustment angle of the reflector from multiple adjustment angles; it can also be Obtain the adjustment unit value of the angle, and determine at least two adjustment angles of the reflector according to the initial adjustment angle and the adjustment unit value based on the current initial adjustment angle of the reflector. The more accurate the target adjustment angle of the reflective member is determined in the angle, and this step is not limited in this embodiment.

Optionally, at least two adjustment angles of the reflector are determined according to the initial adjustment angle and the adjustment unit value. Exemplarily, the initial adjustment angle is θ ₀ , that is, the angle between the reflective bracket and the horizontal direction is θ ₀ , the adjustment unit is Δθ, and the first rotation mechanism on the reflective bracket is rotated in turn with Δθ as the angular rotation unit, and at least two The adjustment angles are θ ₀ -i·Δθ, θ ₀ -(i-1)·Δθ... θ ₀ , θ ₀ +(i-1)·Δθ, θ ₀ +i·Δθ, where i is an integer and i≥2. Please refer to FIG. 5 . FIG. 5 is a schematic diagram of adjusting the reflector to each adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention.

Adjust the reflector to each adjustment angle in turn and continue for a preset period of time, so that the reflector continues to reflect sunlight to the photovoltaic modules for a preset period of time at each adjustment angle, and then determine the corresponding power generation of the photovoltaic module array under each adjustment angle of the reflector .

Step S30, determining a target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array under each adjustment angle;

Step S40, controlling the reflector to adjust to the target adjustment angle.

It should be noted that since the reflective member can reflect solar radiation to adjacent photovoltaic modules, and the adjacent photovoltaic modules may also block the reflective member from receiving solar radiation, with the change of the sun's altitude and azimuth angle, the reflective member will The sunlight is radiated or reflected to adjacent photovoltaic modules. The amount of sunlight received by the photovoltaic modules is not the same, and the effect of improving the power generation of the photovoltaic modules will also be different. By adjusting the inclination angle of the reflector to the optimal inclination angle, that is, the target Adjust the angle to maximize the power generation of the PV modules.

Optionally, the adjacent photovoltaic assemblies may be photovoltaic assemblies in the front row, photovoltaic assemblies in the rear row, or photovoltaic assemblies in the front row and photovoltaic assemblies in the rear row.

As an optional implementation, please refer to FIG. 6 , which is a first schematic flowchart of determining the target adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention. Step 30 includes:

Step S31 , acquiring the power generation amounts corresponding to the photovoltaic modules adjacent to the light-reflecting element under each adjustment angle of the light-reflecting element;

Step S32, determining a target adjustment angle of the reflector according to the power generation amount.

In order to maximize the power generation of the photovoltaic modules, the target adjustment angle of the reflector can be determined according to the respective power generation of the photovoltaic modules adjacent to the reflector at each adjustment angle of the reflector, and the corresponding power generation of the maximum power generation can be obtained. Adjusting the angle, according to the adjustment angle corresponding to the maximum power generation, determine the target adjustment angle of the reflector, that is, the adjustment angle corresponding to the maximum power generation as the target adjustment angle of the reflector.

When each reflective member disposed in the photovoltaic module array is adjusted to the target adjustment angle corresponding to the reflective member, each reflective member can maximize the reflection of sunlight to the adjacent photovoltaic modules, so that the adjacent photovoltaic modules can be The power generation amount reaches the maximum value, so that the power generation amount of the photovoltaic module array is maximized, and the power generation amount of the photovoltaic module array is increased.

Optionally, the target adjustment angles determined by the respective reflective members may be the same or different.

As an optional implementation manner, step S30 includes:

Acquiring the adjustment angle corresponding to the maximum power generation among the power generation corresponding to the photovoltaic module array under each adjustment angle of all the reflectors;

According to the adjustment angle corresponding to the maximum power generation, the target adjustment angle of all the reflectors is determined.

Compared with the method of obtaining the power generation amounts of the photovoltaic modules adjacent to the reflective member at each adjustment angle of the reflective member, and determining the target adjustment angle of the reflective member according to the power generation amount, this embodiment obtains all the reflective members in the corresponding position. Under each adjustment angle, among the power generation corresponding to the photovoltaic module array, the adjustment angle corresponding to the maximum power generation does not need to determine the corresponding target adjustment angle for each reflector, so as to reduce the complexity of data processing, according to the maximum power generation. Corresponding adjustment angle, uniformly determine the target adjustment angle of all reflectors, simplify the operation and improve the power generation of the photovoltaic module array.

As an optional implementation manner, please refer to FIG. 7 , which is a schematic flowchart of determining the target adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention. In this embodiment, step S30 includes:

Step S33, obtaining geographic location information and current time where the photovoltaic power station is located;

Step S34: Determine a target adjustment angle of the reflector according to the geographic location information, the current time, and the power generation corresponding to the photovoltaic module array under each adjustment angle.

It should be noted that since the reflective member can reflect solar radiation to adjacent photovoltaic modules, and the adjacent photovoltaic modules may also block the reflective member from receiving solar radiation, with the change of the sun's altitude and azimuth, the reflective member will reflect the sun's radiation. Light radiation or reflection to adjacent photovoltaic modules, the amount of sunlight received by the photovoltaic modules is not the same, and the effect of improving the power generation of the photovoltaic modules will also be different. Exemplarily, when the sun is directly above or close to directly above the photovoltaic module array of the photovoltaic power station, the shielding effect of the adjacent photovoltaic module shielding reflectors receiving solar radiation is small; When it is on the side or the right side, the shielding effect of the adjacent photovoltaic modules blocking the reflector from receiving solar radiation is relatively large.

It can be understood that in the actual application process, the geographical location information of the photovoltaic power station is different, the reflector will radiate or reflect the sunlight to the adjacent photovoltaic modules, and the amount of sunlight received by the photovoltaic modules will also be different. There are also differences in the shading effect of the solar radiation received by the photovoltaic modules that block the reflector.

In this embodiment, the target adjustment angle of the reflector is determined according to the geographic location information, the current time, and the power generation corresponding to the photovoltaic module array at each adjustment angle. In a preset time interval, it indicates that when the sun is on the left side or the right side of the photovoltaic component array of the photovoltaic power station, the adjacent photovoltaic component shielding reflectors have a great influence on the shielding of solar radiation received, and step S31 and step S32 are performed; When the geographic location information is located in the preset location information, and the current time is in the second preset time interval, it indicates that the sun is directly above or close to the photovoltaic module array of the photovoltaic power station, and the adjacent photovoltaic modules block the reflective member from receiving the light. The shading effect of solar radiation is small, and the steps are performed to obtain that all the reflectors are at each adjustment angle, among the power generation corresponding to the photovoltaic module array respectively, the adjustment angle corresponding to the maximum power generation, according to the adjustment corresponding to the maximum power generation. Angle, to determine the target adjustment angle of all reflectors.

In order to facilitate the understanding of this embodiment, examples are given below. Assuming that the fixed angle between the reflector and the horizontal direction is α, at the original time t0, the angle between the reflector and the horizontal direction is θ ₀ , at this time, the power generation of the adjacent photovoltaic modules such as the power generation unit of the photovoltaic module in the front row is W0; The minimum adjustment unit angle for the rotation of the reflector bracket is Δθ.

At the next adjustment time t1 of the reflector, the reflector can be adjusted to the maximum search angle θ0-i·Δθ or θ0+i·Δθ;

Then rotate the reflector in turn with _Δθ as the adjustment unit angle to obtain the adjusted _{angle θt ;} i-1)·Δθ, θ ₀ +i·Δθ, where i is an integer and i≧2.

Stay at each adjustment angle for a preset period of time ΔT, and measure the power generation W(θt) of the power generation units of the corresponding front-row photovoltaic modules within the preset period of time, namely W(θ0-i·Δθ), W[θ0- (i-1)·Δθ]...W(θ0), W[θ0+(i-1)·Δθ], W(θ0+i·Δθ).

The maximum value of the obtained power generation is W(θt), that is, max{W(θ0-i·Δθ), W[θ0-(i-1)·Δθ]...W(θ0), W[θ0+(i-1 )·Δθ], W(θ0+i·Δθ)}, at this time, the angle θt is the target adjustment angle of the reflector.

In the technical solution disclosed in this embodiment, based on the reflective members disposed in the front and rear rows of photovoltaic modules of the photovoltaic module array, the reflective members are used to reflect sunlight to the photovoltaic module array of the photovoltaic power station, so as to realize rational use between the photovoltaic module arrays. At the same time, the sunlight incident on the photovoltaic modules is increased, and the power generation of the photovoltaic module array is increased. In addition, by obtaining at least two adjustment angles of the reflectors of the photovoltaic power station, the reflectors are adjusted to each adjustment angle in turn for a preset period of time. , so that the reflective member continues to reflect sunlight for a preset duration to the photovoltaic modules at each adjustment angle, and then determines the power generation corresponding to the photovoltaic module array of the reflective member at each adjustment angle, and according to the corresponding power generation of the photovoltaic module array at each adjustment angle, Determine the target adjustment angle of the reflector, so as to determine the target adjustment angle of the reflector that can maximize the reflection of sunlight to the photovoltaic module from each adjustment angle, and control the reflector to adjust to the target adjustment angle, so that the reflector can maximize the reflection of sunlight to the photovoltaic modules, thereby increasing the power generation of photovoltaic module arrays.

In the second embodiment based on the above-mentioned first embodiment, please refer to FIG. 8 , which is a schematic flowchart of the second embodiment of the photovoltaic power generation control method of the present invention. In this embodiment, the photovoltaic power generation control method further includes:

Step S50, obtaining geographic location information and current time where the photovoltaic power station is located;

Step S60, determining the target angle of the photovoltaic module according to the geographic location information and the current time;

Step S70, control the photovoltaic assembly to adjust to the target angle, and execute step S10.

In the actual application process, the geographical location of photovoltaic power plants is different, and the height of the sun is different, which will have different effects on the ability of photovoltaic modules to receive sunlight. When the photovoltaic support adopts a tracking support, the second rotating mechanism of the photovoltaic support and the first rotating mechanism of the reflector are both connected to the controller. When the height and orientation of the sun change, it can be calculated by a preset algorithm to the first rotating mechanism of the photovoltaic support. The second rotating mechanism and the first rotating mechanism of the reflective member issue a rotation command, so that the photovoltaic module and the reflective member can be rotated respectively, so that the photovoltaic module and the reflective member can act together, so that the adjacent photovoltaic modules such as the front and back of the photovoltaic modules in the front row can be rotated. The received solar radiation changes, and then the optimal adjustment angle of the reflector is determined to maximize the power generation of the adjacent photovoltaic modules.

9 is a schematic diagram of adjusting the angle of adjustment of the photovoltaic assembly and the reflective member in the second embodiment of the photovoltaic power generation control method of the present invention.

In order to facilitate the understanding of this embodiment, an example is given below, assuming the original time t0, the fixed angle between the tracking bracket and the horizontal direction is α ₀ , and the angle between the reflector and the horizontal direction is θ ₀ . At this time, the power generation unit of the photovoltaic module in the front row is The power generation is W0. At the next adjustment time t1 of the reflector, the target inclination of the tracking bracket is determined.

Obtain the geographic location information such as longitude and latitude information of the power station corresponding to the photovoltaic power station;

According to the astronomical algorithm, the theoretical optimal inclination angle at the time t1, that is, the target angle α1, is obtained.

The controller sends an instruction to the second rotation mechanism of the tracking bracket to adjust the photovoltaic module to the angle α1 to complete the adjustment of the inclination angle of the photovoltaic module.

Assuming that the power generation of the power generation unit of the adjacent photovoltaic modules, such as the photovoltaic modules in the front row, is W0, the minimum adjustment unit angle of the rotation of the reflective bracket is Δθ.

At the next adjustment time t1 of the reflector, the reflector can be adjusted to the maximum search angle θ0-i·Δθ or θ0+i·Δθ;

Then rotate the reflector in turn with _Δθ as the adjustment unit angle to obtain the adjusted _{angle θt ;} i-1)·Δθ, θ ₀ +i·Δθ, where i is an integer and i≧2.

Stay at each adjustment angle for a preset period of time ΔT, and measure the power generation W(θt) of the power generation units of the corresponding front-row photovoltaic modules within the preset period of time, namely W(θ0-i·Δθ), W[θ0- (i-1)·Δθ]...W(θ0), W[θ0+(i-1)·Δθ], W(θ0+i·Δθ).

The maximum value of the obtained power generation is W(θt), that is, max{W(θ0-i·Δθ), W[θ0-(i-1)·Δθ]...W(θ0), W[θ0+(i-1 )·Δθ], W(θ0+i·Δθ)}, at this time, the angle θt is the target adjustment angle of the reflective element, and the reflective element is controlled to be adjusted to the target adjustment angle to realize the adjustment of the reflective element.

Optionally, step S60 includes:

The geographic location information and the current time are input into a preset astronomical algorithm to obtain the target angle of the photovoltaic bifacial module at the current time.

In the technical solution disclosed in this embodiment, the control system of the tracking support is shared with the fixed photovoltaic support, so as to realize the simultaneous tracking of the photovoltaic components and the reflector, reduce the cost and increase the power generation.

The present invention also proposes a photovoltaic power generation control system. Please refer to FIG. 10. FIG. 10 is a schematic diagram of the module composition of the photovoltaic power generation control system of the present invention. The photovoltaic power generation control system 100 includes:

The acquisition module 110 is used to acquire at least two adjustment angles of the reflective members of the photovoltaic power station, wherein the reflective members are arranged between the front and rear photovoltaic modules of the photovoltaic module array, and are used to reflect sunlight to the photovoltaic modules The photovoltaic module array of the power station;

an adjustment module 120, configured to sequentially adjust the reflector to each adjustment angle for a preset duration;

A determination module 130, configured to determine the target adjustment angle of the reflective member according to the power generation corresponding to the photovoltaic module array under each adjustment angle;

The control module 140 is configured to control the reflector to adjust to the target adjustment angle.

The embodiments of the photovoltaic power generation control system provided by the present invention include all the technical features of the above-mentioned embodiments of the photovoltaic power generation control method, and the expansion and interpretation content of the description are basically the same as those of the above-mentioned photovoltaic power generation control method embodiments. Do repeat.

The present invention also provides a photovoltaic power generation control system, the photovoltaic power generation control system includes: a memory, a processor, and a photovoltaic power generation control program stored in the memory and running on the processor, and the photovoltaic power generation control program is executed by the processor. When implementing the steps of the photovoltaic power generation control method in any of the above embodiments.

The present invention also provides a photovoltaic power station, the photovoltaic power station comprises: a photovoltaic module array, and a reflective support assembly is arranged between the front and rear photovoltaic modules of the photovoltaic module array;

a reflective member, which is rotatably arranged on the reflective support assembly;

and a controller, wherein the photovoltaic assembly array and the reflective support assembly are respectively connected to the controller.

Optionally, the photovoltaic modules arranged in the photovoltaic module array adopt photovoltaic double-sided modules.

In the embodiments of the photovoltaic power generation control system and photovoltaic power station provided by the present invention, all the technical features of the above-mentioned embodiments of the photovoltaic power generation control method are included, and the expansion and explanation content of the description is basically the same as the above-mentioned photovoltaic power generation control method. I won't go into details here.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or system comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or system. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system that includes the element.

The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in the above storage medium (such as ROM/RAM, magnetic CD, CD), including several instructions to make a mobile terminal (which may be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to execute the method of each embodiment of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields , are similarly included in the scope of patent protection of the present invention.

Claims (10)

1. A photovoltaic power generation control method, wherein the photovoltaic power generation control method is applied to a photovoltaic power station, and the photovoltaic power generation control method comprises: acquiring at least two adjustment angles of the reflective member of the photovoltaic power station, wherein the reflective member is disposed between the front and rear photovoltaic assemblies of the photovoltaic assembly array, and is used for reflecting sunlight to the photovoltaic assembly array of the photovoltaic power station; Adjust the reflector to each of the adjustment angles in turn and continue for a preset period of time; Determine the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array at each adjustment angle; Control the reflector to adjust to the target adjustment angle. 2 . The method of claim 1 , wherein the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array at each adjustment angle comprises: 3 . Acquiring the power generation corresponding to the photovoltaic modules adjacent to the reflective member under each adjustment angle of the reflective member; The target adjustment angle of the reflector is determined according to the power generation amount. 3 . The method of claim 1 , wherein the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array at each adjustment angle comprises: 3 . Acquiring the adjustment angle corresponding to the maximum power generation among the power generation corresponding to the photovoltaic module array under each adjustment angle of all the reflectors; According to the adjustment angle corresponding to the maximum power generation, the target adjustment angle of all the reflectors is determined. 4 . The method of claim 1 , wherein the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array at each adjustment angle comprises: 5 . Obtain the geographic location information and the current time of the photovoltaic power station; The target adjustment angle of the reflector is determined according to the geographic location information, the current time, and the power generation corresponding to the photovoltaic module array under each adjustment angle. 5 . The method of claim 1 , wherein the photovoltaic components of the photovoltaic component array are rotatably arranged on a tracking bracket, and the photovoltaic power generation control method further comprises: 6 . Obtain the geographic location information and the current time of the photovoltaic power station; determining the target angle of the photovoltaic module according to the geographic location information and the current time; The photovoltaic assembly is controlled to be adjusted to the target angle, and the step of acquiring at least two adjustment angles of the reflector of the photovoltaic power station is performed. 6. The method of claim 5, wherein the step of determining the target angle of the photovoltaic module according to the geographic location information and the current time comprises: The geographic location information is input into a preset astronomical algorithm to obtain the target angle of the photovoltaic bifacial module at the current time. 7. A photovoltaic power generation control system, wherein the photovoltaic power generation control system comprises: an acquisition module, configured to acquire at least two adjustment angles of the reflectors of the photovoltaic power station, wherein the reflectors are arranged between the front and rear photovoltaic assemblies of the photovoltaic assembly array, and are used to reflect sunlight to the photovoltaic power station array of photovoltaic modules; an adjustment module, configured to adjust the reflective member to each adjustment angle in sequence and continue for a preset duration; a determining module, configured to determine the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic module array under each adjustment angle; The control module is used for controlling the reflector to adjust to the target adjustment angle. 8. A photovoltaic power generation control system, characterized in that the photovoltaic power generation control system comprises: a memory, a processor, and a photovoltaic power generation control program stored in the memory and running on the processor, the photovoltaic power generation control program When the power generation control program is executed by the processor, the steps of the photovoltaic power generation control method according to any one of claims 1-6 are implemented. 9. A photovoltaic power station, characterized in that the photovoltaic power station comprises: a photovoltaic module array, and a reflective support assembly is arranged between the front and rear photovoltaic modules of the photovoltaic module array; a reflective member, which is rotatably arranged on the reflective support assembly; and a controller, wherein the photovoltaic assembly array and the reflective support assembly are respectively connected to the controller. 10 . The photovoltaic power station of claim 9 , wherein the photovoltaic components arranged in the photovoltaic component array are photovoltaic double-sided components. 11 .

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