Photovoltaic power generation control method, system and photovoltaic power station

Abstract

The present invention discloses a photovoltaic power generation control method, system and photovoltaic power station, the method comprising: obtaining at least two adjustment angles of a reflector of a photovoltaic power station, wherein the reflector is arranged between the front and rear rows of photovoltaic components of a photovoltaic component array, and is used to reflect sunlight to the photovoltaic component array of the photovoltaic power station; sequentially adjusting the reflector to each adjustment angle and continuing for a preset time; determining a target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic component array at each adjustment angle; and controlling the reflector to adjust to the target adjustment angle. The method of the present invention sequentially adjusts the reflector to each adjustment angle and continues for a preset time to determine the power generation corresponding to the photovoltaic component array at each adjustment angle of the reflector, determines the target adjustment angle at which the reflector can maximize the reflection of sunlight to the photovoltaic component from each adjustment angle, controls the reflector to adjust to the target adjustment angle, and improves the power generation of the photovoltaic component array.

Description

Technical Field

[0001] The present invention relates to the technical field of solar power generation, and in particular to a photovoltaic power generation control method, system and photovoltaic power station. Background Art

[0002] Photovoltaic modules are made by connecting a number of single solar cells in series, in parallel and tightly sealed. They are the smallest indivisible photovoltaic cell combination device for photovoltaic power generation. At present, photovoltaic modules are installed on photovoltaic brackets to generate electricity. Photovoltaic brackets are generally arrays in rows, and photovoltaic modules are installed on photovoltaic brackets to form regularly arranged module arrays. In addition, since the installation direction of the module arrays is roughly the same, in order to avoid the front and rear rows of photovoltaic module arrays blocking the sunlight from each other, a certain gap will be retained between the arrays to ensure that the modules can obtain sufficient sunlight and generate more electricity. However, the gaps retained between the arrays not only occupy a large land space, but also waste the part of the sunlight in the gaps.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are related technologies. Summary of the invention

[0004] The main purpose of the present invention is to provide a photovoltaic power generation control method, system and photovoltaic power station, aiming to solve the problem that the gaps retained between arrays not only occupy a large land space but also waste the part of sunlight in the gaps.

[0005] To achieve the above object, the present invention provides a photovoltaic power generation control method, which is applied to a photovoltaic power station. The photovoltaic power generation control method includes:

[0006] Obtaining at least two adjustment angles of a reflector of the photovoltaic power station, wherein the reflector is disposed between front and rear rows of photovoltaic components of the photovoltaic component array and is used to reflect sunlight to the photovoltaic component array of the photovoltaic power station;

[0007] Adjusting the reflective element to each of the adjustment angles in sequence and continuously for a preset time period;

[0008] Determining a target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle;

[0009] The reflective element is controlled to be adjusted to the target adjustment angle.

[0010] Optionally, the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle includes:

[0011] Obtaining the power generation amounts respectively corresponding to the photovoltaic modules adjacent to the reflector when the reflector is at each adjustment angle;

[0012] A target adjustment angle of the reflector is determined according to the power generation amount.

[0013] Optionally, the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle includes:

[0014] Obtaining the adjustment angle corresponding to the maximum power generation among the power generation corresponding to the photovoltaic component arrays when all the reflectors are at the various adjustment angles;

[0015] According to the adjustment angle corresponding to the maximum power generation, the target adjustment angles of all reflective elements are determined.

[0016] Optionally, the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle includes:

[0017] Obtaining geographical location information and current time of the photovoltaic power station;

[0018] The target adjustment angle of the reflector is determined according to the geographical location information, the current time, and the power generation corresponding to the photovoltaic component array at each adjustment angle.

[0019] Optionally, the photovoltaic components of the photovoltaic component array are rotatably arranged on a tracking bracket, and the photovoltaic power generation control method further includes:

[0020] Obtaining geographical location information and current time of the photovoltaic power station;

[0021] Determining a target angle of the photovoltaic assembly according to the geographical location information and the current time;

[0022] The photovoltaic assembly is controlled to be adjusted to the target angle, and the step of obtaining at least two adjustment angles of the reflector of the photovoltaic power station is performed.

[0023] Optionally, the step of determining the target angle of the photovoltaic assembly according to the geographical location information and the current time includes:

[0024] The geographic location information is input into a preset astronomical algorithm to obtain a target angle of the photovoltaic bifacial component at the current time.

[0025] In addition, to achieve the above-mentioned purpose, the present invention also provides a photovoltaic power generation control system, the photovoltaic power generation control system comprising:

[0026] An acquisition module, used for acquiring at least two adjustment angles of a reflector of the photovoltaic power generation control system, wherein the reflector is arranged between front and rear rows of photovoltaic components of the photovoltaic component array, and is used for reflecting sunlight to the photovoltaic component array of the photovoltaic power generation control system;

[0027] An adjustment module, used for sequentially adjusting the reflective element to each of the adjustment angles for a preset time period;

[0028] A determination module, used to determine a target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle;

[0029] The control module is used to control the reflective element to adjust to the target adjustment angle.

[0030] In addition, to achieve the above-mentioned purpose, the present invention also provides a photovoltaic power generation control system, which includes: a memory, a processor, and a photovoltaic power generation control program stored in the memory and executable on the processor. When the photovoltaic power generation control program is executed by the processor, the various steps of the photovoltaic power generation control method described above are implemented.

[0031] In addition, to achieve the above-mentioned purpose, the present invention further provides a photovoltaic power station, the photovoltaic power station comprising: a photovoltaic component array, wherein a reflective support component is arranged between the front and rear rows of photovoltaic components of the photovoltaic component array;

[0032] A reflective member, the reflective member being rotatably disposed on the reflective support assembly;

[0033] A controller, wherein the photovoltaic component array and the reflective support component are respectively connected to the controller.

[0034] Optionally, the photovoltaic components arranged in the photovoltaic component array are photovoltaic bifacial components.

[0035] The photovoltaic power generation control method, system and photovoltaic power station proposed in the present invention are based on reflectors arranged on the front and rear rows of photovoltaic modules of the photovoltaic module array, so that the reflectors are used to reflect sunlight to the photovoltaic module array of the photovoltaic power station, so as to achieve reasonable use of the gaps between the photovoltaic module arrays, 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 reflector of the photovoltaic power station, the reflector is adjusted to each adjustment angle in turn and continuously for a preset time, so that the reflector continuously reflects sunlight to the photovoltaic modules for a preset time at each adjustment angle, and then the power generation corresponding to the photovoltaic module array of the reflector at each adjustment angle is determined, and the target adjustment angle of the reflector is determined according to the power generation corresponding to the photovoltaic module array at each adjustment angle, so as to determine the target adjustment angle at which the reflector can maximize the reflection of sunlight to the photovoltaic modules 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 improving the power generation of the photovoltaic module array. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of the terminal equipment involved in each embodiment of the photovoltaic power generation control method of the present invention;

[0037] Figure 2 It is a first structural schematic diagram of a photovoltaic power station of the present invention;

[0038] Figure 3 is a second structural schematic diagram of a photovoltaic power station of the present invention;

[0039] Figure 4 It is a schematic flow chart of a first embodiment of a photovoltaic power generation control method of the present invention;

[0040] Figure 5 It is a schematic diagram of adjusting the reflective element to each adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention;

[0041] Figure 6 It is a schematic diagram of a first process for determining a target adjustment angle in a first embodiment of a photovoltaic power generation control method of the present invention;

[0042] Figure 7 A schematic diagram of a process for determining a target adjustment angle in a first embodiment of a photovoltaic power generation control method of the present invention;

[0043] Figure 8 It is a schematic flow chart of a second embodiment of a photovoltaic power generation control method of the present invention;

[0044] Fig. 9 A schematic diagram of adjusting the angles of the photovoltaic assembly and the reflector in the second embodiment of the photovoltaic power generation control method of the present invention;

[0045] Fig.10 It is a schematic diagram of the module composition of the photovoltaic power generation control system of the present invention.

[0046] Description of Figure Numbers:

[0047] Label name Label name 11 Photovoltaic modules 12 Photovoltaic bracket 2 Reflective support components 21 Support column 22 The first rotating mechanism 3 Reflective parts 4 Controller 121 The second rotating mechanism

[0048] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0050] The present invention provides a photovoltaic power generation control method, which is applied to a photovoltaic power station and includes:

[0051] Obtaining at least two adjustment angles of a reflector of the photovoltaic power station, wherein the reflector is disposed between front and rear rows of photovoltaic components of the photovoltaic component array and is used to reflect sunlight to the photovoltaic component array of the photovoltaic power station;

[0052] Adjusting the reflective element to each of the adjustment angles in sequence and continuously for a preset time period;

[0053] Determining a target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle;

[0054] The reflective element is controlled to be adjusted to the target adjustment angle.

[0055] The photovoltaic power generation control method of the present invention is based on the reflectors of the front and rear rows of photovoltaic modules arranged in the photovoltaic module array, so that the reflectors are used to reflect sunlight to the photovoltaic module array of the photovoltaic power station, so as to achieve the reasonable use of the gaps between the photovoltaic module arrays, 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 reflector of the photovoltaic power station, the reflector is adjusted to each adjustment angle in turn and continuously for a preset time, so that the reflector continuously reflects the sunlight to the photovoltaic modules for a preset time at each adjustment angle, and then the power generation corresponding to the photovoltaic module array of the reflector at each adjustment angle is determined, and the target adjustment angle of the reflector is determined according to the power generation corresponding to the photovoltaic module array at each adjustment angle, so as to determine the target adjustment angle at which the reflector can maximize the reflection of sunlight to the photovoltaic modules from among the various adjustment angles, 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 improving the power generation of the photovoltaic module array.

[0056] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0057] The terminal device of the photovoltaic power generation control method of the embodiment of the present invention may be a photovoltaic power station, or a server for controlling the photovoltaic power station, or a photovoltaic power generation control system for controlling the photovoltaic power station.

[0058] Please refer to Figure 1 , Figure 1 It is a schematic diagram of the structure of the terminal equipment involved in each embodiment of the photovoltaic power generation control method of the present invention.

[0059] like Figure 1 As shown, the terminal device may include: a memory 101 and a processor 102. Those skilled in the art will understand that Figure 1 The structural block diagram of the terminal shown does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown, or combine certain components, or arrange the components differently. Among them, 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 implement the steps of each embodiment of the photovoltaic power generation control method of the present invention.

[0060] Optionally, the terminal device further includes a communication unit 103, which establishes data communication with other terminal devices through a network protocol (the data communication may be IP communication or a Bluetooth channel) to achieve data transmission with other terminal devices.

[0061] Optionally, the terminal device may further include a display unit, which includes a display panel. The display panel may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc., for outputting an interface for displaying a user to browse.

[0062] Please note that, please refer to Figure 2 , Figure 2 This is a first structural schematic diagram of a photovoltaic power station of the present invention, wherein the photovoltaic power station comprises:

[0063] A photovoltaic assembly array (not shown in the figure), wherein a reflective support assembly 2 is provided between the front and rear rows of photovoltaic assemblies 11 of the photovoltaic assembly array;

[0064] A reflective member 3, wherein the reflective member 3 is rotatably disposed on the reflective support assembly 2;

[0065] The controller 4 is connected to the photovoltaic component array and the reflective support component 2 respectively.

[0066] Optionally, the reflective support assembly 2 includes a support column 21 and a first rotating mechanism 22, the support column 21 is arranged between the front and rear rows of photovoltaic components of the photovoltaic component array 1, one end of the first rotating mechanism 22 is rotatably arranged on the support column 21, the other end of the first rotating mechanism 22 is provided with the reflective element 3, and the first rotating mechanism 22 is connected to the controller 4 so as to control the rotation angle of the first rotating mechanism 22 through the controller 4 to change the inclination angle of the reflective element 3.

[0067] Optionally, the supporting column 21 is a telescopic rod, so that the height of the reflective element 3 can be changed by the telescopic rod.

[0068] Optionally, the photovoltaic components 11 of the photovoltaic component array are arranged on a photovoltaic support 12 .

[0069] Optionally, refer to Figure 3 , Figure 3 This is a second structural schematic diagram of the photovoltaic power station of the present invention. The photovoltaic bracket 12 adopts a photovoltaic tracking bracket. The second rotating mechanism 121 in the photovoltaic tracking bracket is connected to the controller 4 to control the angle of the second rotating mechanism 121 and change the inclination angle of the photovoltaic component through the controller 4.

[0070] Optionally, the photovoltaic component 11 is a bifacial photovoltaic component.

[0071] Based on the structural block diagram of the photovoltaic power station described above, various embodiments of the photovoltaic power generation control method of the present invention are proposed.

[0072] In the first embodiment, the present invention provides a photovoltaic power generation control method, please refer to Figure 4 , Figure 4 1 is a flow chart of a first embodiment of a photovoltaic power generation control method of the present invention. In this embodiment, the photovoltaic power generation control method includes the following steps:

[0073] Step S10, obtaining at least two adjustment angles of the reflector of the photovoltaic power station, wherein the reflector is arranged between the front and rear rows of photovoltaic components of the photovoltaic component array, and is used to reflect sunlight to the photovoltaic component array of the photovoltaic power station;

[0074] Step S20, sequentially adjusting the reflective element to each of the adjustment angles for a preset time period;

[0075] In this embodiment, photovoltaic modules are installed on photovoltaic brackets to generate electricity. Photovoltaic brackets are arranged to form rows of arrays, and photovoltaic modules are installed on the photovoltaic brackets to form a regularly arranged photovoltaic module array. The installation direction of the photovoltaic module array is roughly the same. In order to avoid the front and rear rows of photovoltaic modules, that is, the adjacent photovoltaic modules, 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 and generate more electricity. In order to allow the photovoltaic modules to receive more sunlight and increase the power generation of the photovoltaic modules, reflectors are provided between the front and rear rows of photovoltaic modules of the photovoltaic module array. The reflectors are used to reflect sunlight to the photovoltaic module array of the photovoltaic power station.

[0076] At least two adjustment angles of the reflector of the photovoltaic power generation system are obtained by pre-setting multiple adjustment angles, and the preset multiple angles are directly obtained as the at least two adjustment angles of the reflector, wherein the preset multiple adjustment angles are adjustment angles determined based on experimental data analysis, and when the reflector is adjusted to the adjustment angle, the power generation of the photovoltaic component array can be increased with a high probability, so as to quickly determine the target adjustment angle of the reflector from the multiple adjustment angles; or an adjustment unit value of the angle is obtained, and based on the initial adjustment angle at which the reflector is currently located, at least two adjustment angles of the reflector are determined according to the initial adjustment angle and the adjustment unit value, wherein the smaller the adjustment unit value, the more accurate the target adjustment angle of the reflector determined from the at least two adjustment angles, and this embodiment does not limit this step.

[0077] Optionally, at least two adjustment angles of the reflector are determined according to the initial adjustment angle and the adjustment unit value. 0 , that is, the angle between the reflective bracket and the horizontal direction is θ 0 The adjustment unit value is Δθ, and the first rotating mechanism on the reflective bracket is rotated in sequence with Δθ as the angle rotation unit to determine at least two adjustment angles, which are θ in sequence. 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 Figure 5 , Figure 5 It is a schematic diagram of adjusting the reflective element to each adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention.

[0078] The reflector is adjusted to each adjustment angle in turn and maintained for a preset time, so that the reflector continues to reflect sunlight to the photovoltaic module for a preset time at each adjustment angle, thereby determining the power generation corresponding to the photovoltaic module array at each adjustment angle.

[0079] Step S30, determining a target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle;

[0080] Step S40, controlling the reflective element to adjust to the target adjustment angle.

[0081] It should be noted that since the reflector can reflect solar radiation to adjacent photovoltaic modules, and the adjacent photovoltaic modules may also block the reflector from receiving solar radiation, as the solar altitude angle and azimuth angle change, the reflector radiates or reflects sunlight to adjacent photovoltaic modules, the amount of sunlight received by the photovoltaic modules is not the same, and the effect of increasing the power generation of the photovoltaic modules will also be different. The inclination angle of the reflector can be adjusted to the optimal inclination angle, that is, the target adjustment angle, so as to maximize the power generation of the photovoltaic module.

[0082] Optionally, the adjacent photovoltaic components may be front-row photovoltaic components, or rear-row photovoltaic components, or front-row photovoltaic components and rear-row photovoltaic components.

[0083] As an optional implementation, please refer to Figure 6 , Figure 6 This is a first flow chart of determining a target adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention, step 30 includes:

[0084] Step S31, obtaining the power generation amounts corresponding to the photovoltaic modules adjacent to the reflector when the reflector is at each adjustment angle;

[0085] Step S32, determining a target adjustment angle of the reflector according to the power generation amount.

[0086] In order to maximize the power generation of the photovoltaic assembly, the target adjustment angle of the reflector is determined according to the power generation corresponding to the photovoltaic assemblies adjacent to the reflector when the reflector is at various adjustment angles. The adjustment angle corresponding to the maximum power generation can be obtained, and the target adjustment angle of the reflector is determined based on the adjustment angle corresponding to the maximum power generation. In other words, the adjustment angle corresponding to the maximum power generation is used as the target adjustment angle of the reflector.

[0087] When each reflector arranged in the photovoltaic component array is adjusted to the target adjustment angle corresponding to the reflector, each reflector can maximize the reflection of sunlight to the adjacent photovoltaic components, so that the power generation of the adjacent photovoltaic components reaches the maximum value, and then the power generation of the photovoltaic component array reaches the maximum, thereby improving the power generation of the photovoltaic component array.

[0088] Optionally, the target adjustment angles respectively determined for the reflective elements may be the same or different.

[0089] As an optional implementation, step S30 includes:

[0090] Obtaining the adjustment angle corresponding to the maximum power generation among the power generation corresponding to the photovoltaic assembly array when all the reflectors are at each of the adjustment angles;

[0091] According to the adjustment angle corresponding to the maximum power generation, the target adjustment angles of all reflective elements are determined.

[0092] Compared to obtaining the power generation corresponding to the photovoltaic components adjacent to the reflector when the reflector is at each of the adjustment angles, and determining the target adjustment angle of the reflector based on the power generation, this embodiment obtains the adjustment angle corresponding to the maximum power generation among the power generation corresponding to the photovoltaic component array when all the reflectors are at each of the adjustment angles, and does not need to determine the corresponding target adjustment angle for each reflector, so as to reduce the complexity of data processing. The target adjustment angles of all reflectors are uniformly determined based on the adjustment angle corresponding to the maximum power generation, thereby simplifying the operation and improving the power generation of the photovoltaic component array.

[0093] As an optional implementation, please refer to Figure 7 , Figure 7 FIG. 1 is a flow chart of determining a target adjustment angle in the first embodiment of the photovoltaic power generation control method of the present invention. In this embodiment, step S30 includes:

[0094] Step S33, obtaining the geographical location information of the photovoltaic power station and the current time;

[0095] Step S34, determining a target adjustment angle of the reflector according to the geographical location information, the current time, and the power generation corresponding to the photovoltaic component array at each adjustment angle.

[0096] It should be noted that, since the reflector can reflect solar radiation to the adjacent photovoltaic modules, and the adjacent photovoltaic modules may also block the reflector from receiving solar radiation, as the solar altitude angle and azimuth angle change, the reflector radiates or reflects solar light to the adjacent photovoltaic modules, and the amount of solar light received by the photovoltaic modules is not the same, and the effect of increasing the power generation of the photovoltaic modules will also be different. For example, when the sun is directly above or close to the photovoltaic module array of the photovoltaic power station, the adjacent photovoltaic modules blocking the reflector from receiving solar radiation have a smaller blocking effect; when the sun is to the left or right of the photovoltaic module array of the photovoltaic power station, the adjacent photovoltaic modules blocking the reflector from receiving solar radiation have a greater blocking effect.

[0097] It is understandable that in actual application, the geographical location information of the photovoltaic power station is different, and the reflectors radiate or reflect sunlight to adjacent photovoltaic modules. The amount of sunlight received by the photovoltaic modules will also be different. The blocking effect of the reflectors on the reception of solar radiation by adjacent photovoltaic modules will also be different.

[0098] In this embodiment, the target adjustment angle of the reflector is determined according to the geographical location information, the current time and the power generation corresponding to the photovoltaic component array at each adjustment angle. When the geographical location information is located at the preset location information and the current time is in the first preset time interval, it indicates that when the sun is on the left side or right side of the photovoltaic component array of the photovoltaic power station, the adjacent photovoltaic components block the reflector to receive solar radiation. The blocking effect is relatively large, and step S31 and step S32 are executed; when the geographical location information is located at the preset location information and the current time is in the second preset time interval, it indicates that when the sun is directly above or close to directly above the photovoltaic component array of the photovoltaic power station, the adjacent photovoltaic components block the reflector to receive solar radiation. The step is executed to obtain the adjustment angle corresponding to the maximum power generation among the power generation corresponding to the photovoltaic component array of all reflectors at various adjustment angles, and the target adjustment angles of all reflectors are determined according to the adjustment angle corresponding to the maximum power generation.

[0099] To facilitate understanding of this embodiment, an example is given below. Assume that the fixed angle between the reflector and the horizontal direction is α, and at the original time t0, the angle between the reflector and the horizontal direction is θ 0 At this time, the power generation capacity of the power generation unit of the adjacent photovoltaic modules, such as the front photovoltaic modules, is W0; the minimum adjustment unit angle of the reflective bracket is Δθ.

[0100] At the next adjustment time t1 of the reflector, the reflector may be adjusted to the maximum preferential angle θ0-i·Δθ or θ0+i·Δθ;

[0101] Then, the reflector is rotated in sequence with Δθ as the adjustment unit angle to obtain the adjusted angle θt; for example, θt can be successively 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.

[0102] The preset time length ΔT is stayed at each adjustment angle, and the power generation W(θt) of the power generation unit of the front row photovoltaic components corresponding to the preset time length is measured respectively, that is, W(θ0-i·Δθ), W[θ0-(i-1)·Δθ]…W(θ0), W[θ0+(i-1)·Δθ], W(θ0+i·Δθ).

[0103] The maximum value of the 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)}, where the angle θt is the target adjustment angle of the reflector.

[0104] In the technical solution disclosed in the present embodiment, based on the reflectors of the front and rear rows of photovoltaic modules arranged in the photovoltaic module array, the reflectors are used to reflect sunlight to the photovoltaic module array of the photovoltaic power station, so as to achieve reasonable use of the gaps between the photovoltaic module arrays, 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 reflector of the photovoltaic power station, the reflector is adjusted to each adjustment angle in turn and continuously for a preset time, so that the reflector continuously reflects sunlight to the photovoltaic modules for a preset time at each adjustment angle, and then the power generation corresponding to the photovoltaic module array of the reflector at each adjustment angle is determined, and the target adjustment angle of the reflector is determined according to the power generation corresponding to the photovoltaic module array at each adjustment angle, so as to determine the target adjustment angle at which the reflector can maximize the reflection of sunlight to the photovoltaic modules from among the various adjustment angles, 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 improving the power generation of the photovoltaic module array.

[0105] In the second embodiment proposed based on the above first embodiment, please refer to Figure 8 , Figure 8 1 is a flow chart of a second embodiment of the photovoltaic power generation control method of the present invention. In this embodiment, the photovoltaic power generation control method further includes:

[0106] Step S50, obtaining the geographical location information of the photovoltaic power station and the current time;

[0107] Step S60, determining a target angle of the photovoltaic assembly according to the geographical location information and the current time;

[0108] Step S70, controlling the photovoltaic assembly to adjust to the target angle, and executing step S10.

[0109] In actual application, different geographical locations of photovoltaic power stations and different sun altitudes will have different effects on the ability of photovoltaic modules to receive sunlight. When the photovoltaic bracket adopts a tracking bracket, the second rotating mechanism of the photovoltaic bracket and the first rotating mechanism of the reflector are both connected to the controller. When the sun's altitude and azimuth change, the preset algorithm can be used to calculate and send a rotation instruction to the second rotating mechanism of the photovoltaic bracket and the first rotating mechanism of the reflector, so that the photovoltaic module and the reflector can be rotated respectively, so that the photovoltaic module and the reflector can work together, so that the solar radiation received by the front and back sides of the adjacent photovoltaic modules, such as the front photovoltaic modules, changes, and then the optimal adjustment angle of the reflector is determined to maximize the power generation of the adjacent photovoltaic modules.

[0110] Among them, the coordinated action of photovoltaic components and reflectors can be referred to Fig. 9 , Fig. 9 It is a schematic diagram of adjusting the angles of the photovoltaic assembly and the reflector in the second embodiment of the photovoltaic power generation control method of the present invention.

[0111] To facilitate understanding of this embodiment, an example is given below. Assume that at the original time t0, the fixed angle between the tracking bracket and the horizontal direction is α 0 , the angle between the reflector and the horizontal direction is θ 0 At this time, the power generation of the power generation unit of the front row of photovoltaic modules is W0. At the next adjustment time t1 of the reflector, the target inclination angle of the tracking bracket is determined.

[0112] Obtain the geographical location information of the power station corresponding to the photovoltaic power station, such as longitude and latitude information;

[0113] The theoretical optimal inclination angle at time t1, that is, the target angle α1, is calculated according to the astronomical algorithm.

[0114] The controller sends a command to the second rotating mechanism of the tracking bracket, so that the photovoltaic assembly is adjusted to the angle α1 to complete the adjustment of the tilt angle of the photovoltaic assembly.

[0115] Assuming that the power generation capacity of the power generation unit of the adjacent photovoltaic modules, such as the front photovoltaic modules, is W0, the minimum adjustment unit angle of the reflective bracket is Δθ.

[0116] At the next adjustment time t1 of the reflector, the reflector may be adjusted to the maximum preferential angle θ0-i·Δθ or θ0+i·Δθ;

[0117] Then, the reflector is rotated in sequence with Δθ as the adjustment unit angle to obtain the adjusted angle θt; for example, θt can be successively θ 0 -i·Δθ、θ 0 -(i-1)·Δθ……θ 0 ,θ 0 +(i-1)·Δθ、θ0 +i·Δθ, where i is an integer and i≥2.

[0118] The preset time length ΔT is stayed at each adjustment angle, and the power generation W(θt) of the power generation unit of the front row photovoltaic components corresponding to the preset time length is measured respectively, that is, W(θ0-i·Δθ), W[θ0-(i-1)·Δθ]…W(θ0), W[θ0+(i-1)·Δθ], W(θ0+i·Δθ).

[0119] The maximum value of the 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. The reflector is controlled to adjust to the target adjustment angle to achieve adjustment of the reflector.

[0120] Optionally, step S60 includes:

[0121] The geographical location information and the current time are input into a preset astronomical algorithm to obtain a target angle of the photovoltaic bifacial component at the current time.

[0122] In the technical solution disclosed in this embodiment, the control system of the tracking bracket is shared with the fixed photovoltaic bracket to achieve simultaneous tracking of the photovoltaic components and the reflective elements, thereby reducing costs and increasing power generation.

[0123] The present invention also proposes a photovoltaic power generation control system, please refer to Fig.10 , Fig.10 The photovoltaic power generation control system 100 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:

[0124] An acquisition module 110 is used to acquire at least two adjustment angles of a reflector of the photovoltaic power station, wherein the reflector is arranged between front and rear rows of photovoltaic components of the photovoltaic component array, and is used to reflect sunlight to the photovoltaic component array of the photovoltaic power station;

[0125] An adjustment module 120, used for sequentially adjusting the reflective element to each of the adjustment angles for a preset time period;

[0126] A determination module 130, configured to determine a target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle;

[0127] The control module 140 is used to control the reflective element to adjust to the target adjustment angle.

[0128] In the embodiment of the photovoltaic power generation control system provided by the present invention, all technical features of the above-mentioned embodiments of the photovoltaic power generation control method are included, and the expansion and explanation content of the specification are basically the same as those of the above-mentioned embodiments of the photovoltaic power generation control method, and will not be repeated here.

[0129] The present invention also proposes a photovoltaic power generation control system, which includes: a memory, a processor, and a photovoltaic power generation control program stored in the memory and executable on the processor, and when the photovoltaic power generation control program is executed by the processor, the steps of the photovoltaic power generation control method in any of the above embodiments are implemented.

[0130] The present invention further provides a photovoltaic power station, which includes: a photovoltaic component array, wherein a reflective support component is arranged between the front and rear rows of photovoltaic components of the photovoltaic component array;

[0131] A reflective member, the reflective member being rotatably disposed on the reflective support assembly;

[0132] A controller, wherein the photovoltaic component array and the reflective support component are respectively connected to the controller.

[0133] Optionally, the photovoltaic components arranged in the photovoltaic component array are photovoltaic bifacial components.

[0134] In the embodiments of the photovoltaic power generation control system and photovoltaic power station provided by the present invention, all technical features of the above-mentioned embodiments of the photovoltaic power generation control method are included, and the expansion and explanation content of the specification are basically the same as those of the above-mentioned embodiments of the photovoltaic power generation control method, and will not be repeated here.

[0135] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0136] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0137] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for a mobile terminal (which can 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.

[0138] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A photovoltaic power generation control method, characterized in that: The photovoltaic power generation control method is applied to a photovoltaic power station, and the photovoltaic power generation control method includes: Obtaining at least two adjustment angles of a reflector of the photovoltaic power station, wherein the reflector is disposed between front and rear rows of photovoltaic components of the photovoltaic component array and is used to reflect sunlight to the photovoltaic component array of the photovoltaic power station; Adjusting the reflective element to each of the adjustment angles in sequence and continuously for a preset time period; Determine a target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle, wherein the target adjustment angle is an adjustment angle corresponding to the maximum power generation of the photovoltaic assembly array; Controlling the reflective element to adjust to the target adjustment angle; Wherein, the step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle includes: When the current time is in the first preset time interval, the power generation corresponding to the photovoltaic components adjacent to the reflector when the reflector is at each adjustment angle is obtained; the target adjustment angle of the reflector is determined according to the power generation; the sun is on the side of the photovoltaic component array of the photovoltaic power station in the first preset time interval; When the current time is in the second preset time interval, the adjustment angle corresponding to the maximum power generation among the power generation corresponding to the photovoltaic component array when all reflectors are in each of the adjustment angles is obtained; according to the adjustment angle corresponding to the maximum power generation, the target adjustment angle of all reflectors is determined; within the second preset time interval, the sun is in the range directly above the photovoltaic component array of the photovoltaic power station.

2. The method according to claim 1, characterized in that The step of determining the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic assembly array at each adjustment angle comprises: Obtaining geographical location information and current time of the photovoltaic power station; The target adjustment angle of the reflector is determined according to the geographical location information, the current time, and the power generation corresponding to the photovoltaic component array at each adjustment angle.

3. The method according to claim 1, characterized in that The photovoltaic components of the photovoltaic component array are rotatably arranged on a tracking bracket, and the photovoltaic power generation control method further includes: Obtaining geographical location information and current time of the photovoltaic power station; Determining a target angle of the photovoltaic assembly according to the geographical location information and the current time; The photovoltaic assembly is controlled to be adjusted to the target angle, and the step of obtaining at least two adjustment angles of the reflector of the photovoltaic power station is performed.

4. The method according to claim 3, characterized in that The step of determining the target angle of the photovoltaic assembly according to the geographical location information and the current time includes: The geographic location information is input into a preset astronomical algorithm to obtain a target angle of the photovoltaic bifacial component at the current time.

5. A photovoltaic power generation control system, characterized in that: The photovoltaic power generation control system comprises: An acquisition module, used for acquiring at least two adjustment angles of a reflector of the photovoltaic power station, wherein the reflector is arranged between front and rear rows of photovoltaic components of the photovoltaic component array, and is used for reflecting sunlight to the photovoltaic component array of the photovoltaic power station; An adjustment module, used for sequentially adjusting the reflective element to each of the adjustment angles for a preset time period; A determination module is used to determine the target adjustment angle of the reflector according to the power generation corresponding to the photovoltaic component array under each of the adjustment angles, and the target adjustment angle is the adjustment angle corresponding to the maximum power generation of the photovoltaic component array; wherein the steps include: when the current time is in the first preset time interval, obtaining the power generation corresponding to the photovoltaic components adjacent to the reflector when the reflector is at each of the adjustment angles; determining the target adjustment angle of the reflector according to the power generation; within the first preset time interval, the sun is on the side of the photovoltaic component array of the photovoltaic power station; when the current time is in the second preset time interval, obtaining the adjustment angle corresponding to the maximum power generation among the power generation corresponding to the photovoltaic component array when all the reflectors are at each of the adjustment angles; determining the target adjustment angle of all reflectors according to the adjustment angle corresponding to the maximum power generation; within the second preset time interval, the sun is in the range directly above the photovoltaic component array of the photovoltaic power station; The control module is used to control the reflective element to adjust to the target adjustment angle.

6. A photovoltaic power generation control system, characterized in that: The photovoltaic power generation control system includes: a memory, a processor, and a photovoltaic power generation control program stored in the memory and executable on the processor. When the photovoltaic power generation control program is executed by the processor, the steps of the photovoltaic power generation control method as described in any one of claims 1 to 4 are implemented.

7. A photovoltaic power station, characterized in that: The photovoltaic power station is applied to the photovoltaic power generation control method according to any one of claims 1 to 4, and the photovoltaic power station comprises: a photovoltaic component array, wherein a reflective support component is arranged between the front and rear rows of photovoltaic components of the photovoltaic component array; A reflective member, the reflective member being rotatably disposed on the reflective support assembly; A controller, wherein the photovoltaic component array and the reflective support component are respectively connected to the controller.

8. The photovoltaic power station according to claim 7, characterized in that: The photovoltaic components arranged in the photovoltaic component array are photovoltaic bifacial components.

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