Photovoltaic tracking method and related device

Abstract

The present invention provides a photovoltaic tracking method and related devices. In the present invention, when there is a target wind parameter that meets the preset angle adjustment rule, the target first component partition and the target second component partition corresponding to the target wind parameter are determined, and the photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted to a preset angle that can resist the wind force, and based on the wind speed of the target second component partition, the photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted. That is, in the present invention, the target first component partition is used to resist and attenuate the wind force, thereby reducing the wind force of the target second component partition, so that the photovoltaic components in the target second component partition can be used to generate electricity. Compared with the method of adjusting the photovoltaic components to a horizontal posture, the irradiation area can be increased, thereby increasing the power generation of the photovoltaic system.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic tracking, and more particularly to a photovoltaic tracking method and related devices. Background Art

[0002] The photovoltaic tracking system can improve the power generation income of the photovoltaic system and is widely used in the industry. Its principle is to fix the photovoltaic modules on the tracking bracket, and control the tracking bracket through the tracker to adjust the angle of the photovoltaic modules to maximize the received radiation.

[0003] Compared with fixed brackets, tracking brackets are mechanical rotating structures. When encountering strong winds, the tracking brackets will twist, flip, and other phenomena, and then the structural system and even the components will be damaged. The current photovoltaic tracking system has a maximum safe operating wind speed of about 20m / s. If the wind speed is higher, it will not be able to track normally and needs to enter the strong wind protection mode, that is, adjust the photovoltaic components to a horizontal posture to reduce the wind-exposed area of ​​the photovoltaic components. Although this method ensures the reliability of the photovoltaic system, it reduces the power generation of the photovoltaic system. Summary of the invention

[0004] In view of this, the present invention provides a photovoltaic tracking method and related devices to solve the problem that when the wind speed exceeds the maximum wind speed for safe operation, the photovoltaic components are adjusted to a horizontal posture to reduce the wind-exposed area of ​​the photovoltaic components, which will reduce the power generation of the photovoltaic system.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A photovoltaic tracking method is applied to a controller in a photovoltaic tracking system, and the photovoltaic tracking method comprises:

[0007] Obtain target wind parameters that meet preset angle adjustment rules;

[0008] Determine a target first component partition and a target second component partition corresponding to the target wind parameter;

[0009] The photovoltaic tracking angle of the photovoltaic components in the target first component partition is adjusted to a preset angle capable of withstanding wind force, and based on the wind speed in the target second component partition, the photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted.

[0010] Optionally, obtaining a target wind parameter that satisfies a preset angle adjustment rule includes:

[0011] Obtaining wind parameters at different locations of the photovoltaic module; the wind parameters include wind speed and wind direction;

[0012] A wind parameter whose wind speed is greater than a preset maximum wind speed is determined and used as a target wind parameter.

[0013] Optionally, determining a target first component partition and a target second component partition corresponding to the target wind parameter includes:

[0014] Based on the correspondence between the wind parameters, the first component partition and the second component partition, the target first component partition and the target second component partition corresponding to the target wind parameters are determined; wherein, under different wind parameters, the photovoltaic components in the photovoltaic tracking system are divided into a first component partition whose wind load is greater than a preset wind load threshold and a second component partition whose wind load is not greater than the preset wind load threshold.

[0015] Optionally, adjusting the photovoltaic tracking angle of the photovoltaic components of the target first component partition to a preset angle capable of withstanding wind force comprises:

[0016] Adjusting the photovoltaic tracking angle of the photovoltaic components of the target first component partition to a maximum preset angle capable of withstanding wind force;

[0017] Or, the photovoltaic tracking angle of the photovoltaic components in the target first component partition is adjusted to an angle that can withstand wind force and decreases in sequence according to the wind-exposed position of the photovoltaic components in the target first component partition; the minimum photovoltaic tracking angle of the photovoltaic components in the target first component partition is greater than the minimum preset angle that can withstand wind force.

[0018] Optionally, after adjusting the photovoltaic tracking angle of the photovoltaic components of the target first component partition to a preset angle capable of withstanding wind force, the method further includes:

[0019] The photovoltaic tracking angle of the photovoltaic module is locked by controlling the mechanical structure.

[0020] Optionally, adjusting the photovoltaic tracking angle of the photovoltaic components in the target second component partition based on the wind speed of the target second component partition includes:

[0021] Acquire the wind speed of the target second component partition after the photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted;

[0022] When the wind speed of the target second component partition is greater than the preset maximum wind speed, obtaining the maximum working angle and the optimal power generation angle corresponding to the wind speed of the target second component partition;

[0023] The photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted to a smaller value between the maximum working angle and the optimal power generation angle.

[0024] Optionally, the target second component partition includes a first sub-partition corresponding to the target wind parameter and having a wind load greater than a preset sub-wind load threshold and a second sub-partition with a wind load not greater than the preset sub-wind load threshold;

[0025] The photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted to a smaller value between the maximum working angle and the optimal power generation angle, including:

[0026] The photovoltaic tracking angle of the photovoltaic components in the first sub-area is adjusted to the smaller value of the maximum working angle and the optimal power generation angle, and the photovoltaic tracking angle of the photovoltaic components in the second sub-area is adjusted to the optimal power generation angle.

[0027] A photovoltaic tracking device, applied to a controller in a photovoltaic tracking system, the photovoltaic tracking device comprising:

[0028] A parameter acquisition module, used to acquire target wind parameters that meet preset angle adjustment rules;

[0029] A partition determination module, used to determine a target first component partition and a target second component partition corresponding to the target wind parameter;

[0030] An angle adjustment module is used to adjust the photovoltaic tracking angle of the photovoltaic components in the target first component partition to a preset angle that can withstand wind force, and adjust the photovoltaic tracking angle of the photovoltaic components in the target second component partition based on the wind speed of the target second component partition.

[0031] A controller comprises: a memory and a processor;

[0032] Wherein, the memory is used to store programs;

[0033] The processor calls the program and is used to execute the above photovoltaic tracking method.

[0034] A photovoltaic tracking system comprises the above-mentioned controller.

[0035] Optionally, a wind sensor and tracker are also included;

[0036] The controller obtains wind parameters collected by the wind sensor, and controls the tracker to adjust the photovoltaic tracking angle of the photovoltaic assembly through the wind parameters.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The present invention provides a photovoltaic tracking method and related devices. In the present invention, when there is a target wind parameter that meets the preset angle adjustment rule, the target first component partition and the target second component partition corresponding to the target wind parameter are determined, and the photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted to a preset angle that can resist the wind force, and based on the wind speed of the target second component partition, the photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted. That is, in the present invention, the target first component partition is used to resist and attenuate the wind force, thereby reducing the wind force of the target second component partition, so that the photovoltaic components in the target second component partition can be used to generate electricity. Compared with the method of adjusting the photovoltaic components to a horizontal posture, the irradiation area can be increased, thereby increasing the power generation of the photovoltaic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0040] Figure 1 It is a schematic diagram of a high wind protection mode in the prior art;

[0041] Figure 2 A schematic diagram of a photovoltaic tracking system provided by an embodiment of the present invention;

[0042] Figure 3 A partial top view of a flat single-axis photovoltaic tracking array provided by an embodiment of the present invention;

[0043] Figure 4 A schematic diagram of the area of ​​the array affected by wind load provided by an embodiment of the present invention;

[0044] Figure 5 A partition control effect diagram provided by an embodiment of the present invention;

[0045] Figure 6 A schematic diagram of partitions provided in an embodiment of the present invention;

[0046] Figure 7 A method flow chart of a photovoltaic tracking method provided by an embodiment of the present invention;

[0047] Figure 8 An angle diagram provided for an embodiment of the present invention;

[0048] Fig. 9 Another partition diagram provided for an embodiment of the present invention;

[0049] Fig.10 A schematic structural diagram of a photovoltaic tracking device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] The photovoltaic tracking system can improve the power generation income of the photovoltaic system and is widely used in the industry. Its principle is to fix the photovoltaic modules on the tracking bracket, and control the tracking bracket through the tracker to adjust the angle of the photovoltaic modules to maximize the received radiation.

[0052] Compared with fixed brackets, tracking brackets are mechanical rotating structures. When encountering strong winds, the tracking brackets will twist and flip, and then the structural system or even the components will be damaged. The current photovoltaic tracking system has a maximum safe operating wind speed of about 20m / s. If the wind speed is higher, it will not be able to track normally and needs to enter the strong wind protection mode, that is, adjust the photovoltaic components to a horizontal posture (such as from Figure 1 The photovoltaic tracking angle is θ1 adjusted to 0°) to reduce the wind-exposed area of ​​the photovoltaic modules. Although this method ensures the reliability of the photovoltaic system, it reduces the operating power of the modules, thereby reducing the power generation of the photovoltaic system.

[0053] To solve this problem, the photovoltaic module array can be divided into zones, with different zones using different angle adjustment modes to cope with wind loads. Areas with larger wind loads can be used to resist wind force, while the remaining areas can be used to generate electricity, thereby maximizing power generation capacity while ensuring reliability.

[0054] Based on the above, refer to Figure 2 The photovoltaic tracking system of the present invention includes key modules such as photovoltaic strings composed of photovoltaic modules, trackers 1-n, wind sensors, controllers, inverters, etc. Among them, the photovoltaic strings are physically fixed on the tracking bracket, and the tracking bracket is driven by the tracker. At the same time, the photovoltaic strings are electrically connected to the inverter. The controller communicates with the tracker and wind sensor through communication, such as RS485, or wireless. The controller can obtain wind sensor and astronomical data, and through analysis and calculation, issue instructions to the tracker to perform corresponding actions to adjust the photovoltaic tracking angle of the photovoltaic module.

[0055] Based on the above-mentioned embodiments of the photovoltaic tracking system, an embodiment of the present invention provides a photovoltaic tracking method, which is applied to a controller in the photovoltaic tracking system.

[0056] In this embodiment, under different wind parameters, the photovoltaic components in the photovoltaic tracking system are divided into a first component partition where the wind load is greater than a preset wind load threshold and a second component partition where the wind load is not greater than the preset wind load threshold.

[0057] In order to clearly illustrate the partitions in this embodiment, Figure 3 A partial top view of a typical flat single-axis photovoltaic tracking array is given. Its bracket extends in the north-south direction, and the inclination angle is consistent at the same time. When the wind blows through the array, the photovoltaic modules have a certain inclination angle, which forms resistance to the wind. Therefore, wind loads of different sizes will be distributed in the entire photovoltaic array area. Specifically, assuming that the wind comes from the west, the wind load of the first few rows of the array is the largest. After being blocked by several rows of modules, the wind force gradually decreases along the wind direction, forming a load gradient. Similarly, the wind load conditions in other directions can be deduced.

[0058] Figure 3 The wind load gradient is analyzed based on the case where the inclination angles of all components are the same. If the components near the periphery (high wind area) are intentionally set to a larger inclination angle, like a wall to resist the wind, then the wind load in the inner area (low wind area) will be greatly reduced. The effect is as follows: Figure 4 shown.

[0059] Therefore, in this photovoltaic system, this embodiment pre-partitions the tracking system array, and different partitions use different angle adjustment modes to deal with wind loads. For example, the angle adjustment target of the brackets in the outer area is to "resist" strong winds and maximize the attenuation of wind force, while the photovoltaic brackets near the inner area can still take into account the maximum power generation tracking because the wind force is very small. Overall, the power generation is maximized while ensuring reliability. The effect diagram is as follows Figure 5 shown.

[0060] Specifically, the photovoltaic module array is first partitioned, and the partitioning method is as follows: according to the arrangement of the array, mechanical simulation can be used to obtain the overall force distribution of the array under different wind directions, that is, different wind parameters (including wind direction and wind speed), that is, wind load. The brackets whose forces exceed the safe operation boundary of the tracking system are selected, and the wind load of the photovoltaic modules on them is greater than the preset wind load threshold. These photovoltaic modules are used as the first component partition, and the first component partition is generally located on the periphery of the array. The photovoltaic modules on the remaining brackets are used as the second component partition, that is, the photovoltaic modules whose wind load is not greater than the preset wind load threshold constitute the second component partition.

[0061] Through the above steps, the first component partition and the second component partition under different wind parameters can be obtained, and the corresponding relationship among the wind parameters, the first component partition and the second component partition can be established.

[0062] Figure 6 A partition diagram is given. The east and west sides are subject to strong winds. Three rows of brackets are selected as the first component partitions, and they are marked as A and B respectively. When the wind is from the west, the first component partition is Figure 6 The first component partition is A, and the second component partition is the rest of the first component partition A (the second partition and the first component partition B). When the wind is from the east, the first component partition is Figure 6 The first component partition is B, and the second component partition is the rest except the first component partition B. The first component partition and the second component partition will be distinguished in the subsequent control.

[0063] When dividing the area, considering that the control angles in the same partition are basically the same, it is necessary to consider the MPPT branches of the inverter and prioritize dividing the branches under the same MPPT into the same type of area. It is not recommended that branch 1 of a certain MPPT belongs to the first component partition, while branch 2 belongs to the second component partition, to reduce the impact on power generation.

[0064] At the same time, different partitions are equipped with corresponding wind speed sensors to collect wind parameters in different areas, such as wind force, wind direction, etc.

[0065] After defining the partitions, you can control the different partitions.

[0066] It should be noted that the present embodiment adopts a two-partition solution. In addition, more than two partition solutions may be set according to actual applications, and different partitions may have different control modes.

[0067] Reference Figure 7 The photovoltaic tracking method in the embodiment of the present invention may include:

[0068] S11. Obtain target wind parameters that meet preset angle adjustment rules.

[0069] Specifically, wind parameters at different positions (such as four positions of east, south, west and north) of the photovoltaic assembly may be obtained, and the wind parameters include wind speed and wind direction.

[0070] A wind parameter whose wind speed is greater than a preset maximum wind speed W_th (eg, 20 m / s) is determined and used as a target wind parameter.

[0071] S12. Determine a target first component partition and a target second component partition corresponding to the target wind parameter.

[0072] Specifically, based on the correspondence between the wind parameter, the first component partition and the second component partition, the target first component partition and the target second component partition corresponding to the target wind parameter may be determined.

[0073] Wherein, under different wind parameters, the photovoltaic components in the photovoltaic tracking system are divided into a first component partition where the wind load is greater than a preset wind load threshold and a second component partition where the wind load is not greater than the preset wind load threshold. For a specific introduction, refer to the above corresponding description.

[0074] Reference Figure 6 , if the wind comes from the west, the target first component partition is the first component partition A, and the second partition and the first component partition B constitute the target second component partition.

[0075] S13, adjusting the photovoltaic tracking angle of the photovoltaic components of the target first component partition to a preset angle capable of withstanding wind force.

[0076] Specifically, when the wind sensor of the first target module partition detects that the wind speed exceeds W_th during normal tracking, it automatically enters the "wind control mode" and actively adjusts the photovoltaic tracking angle of the partition to a preset angle to resist the wind force and minimize the inner wind load. The effect is as described above. Figure 5 shown.

[0077] In practical applications, the photovoltaic tracking angle of the photovoltaic components of the target first component partition can be adjusted to a maximum preset angle that can resist wind force. At this time, the ability to resist wind force is the greatest, and the components of the target second component partition can be protected to the maximum extent.

[0078] In addition, the photovoltaic tracking angle of the photovoltaic components in the target first component partition can be adjusted to an angle that can withstand wind force and decreases successively according to the wind-exposed position of the photovoltaic components in the target first component partition; the minimum photovoltaic tracking angle of the photovoltaic components in the target first component partition is greater than the minimum preset angle that can withstand wind force.

[0079] Specifically, since the target first component partition may be a multi-row bracket, and since the wind also decreases during the transmission process, it is not necessary to adjust all the brackets in the target first component partition to the same angle. Therefore, the angles between the multi-row brackets can be the same, or they can be adjusted to different angles according to the wind-receiving positions, such as a decreasing posture. However, it should be ensured that the minimum photovoltaic tracking angle of the photovoltaic components in the partition is greater than the minimum preset angle that can withstand the wind, so that each photovoltaic component in the partition can withstand the wind.

[0080] At the same time, since the wind is generally coming from one main direction, the controller can judge the wind direction and start the partition on the corresponding side. If it is detected that the wind direction is west, the first component partition A will be controlled to enter the wind control mode, and the second partition and the first component partition B can be operated in the conventional tracking mode or semi-tracking mode, and vice versa. This can reduce unnecessary action range and increase power generation.

[0081] In another implementation of the present invention, considering that the photovoltaic support of the target first component partition needs to withstand strong winds, higher requirements are placed on the reliability of the structure, so some special considerations are made in its design scheme.

[0082] Method 1: The tracking system of the first target component partition adopts a structural drive device with greater wind load resistance. Generally, the tracking system is a single-point motor drive structure, but here a multi-point drive can be used to enhance the driving capacity and stability in a fixed state.

[0083] Method 2: The structure is equipped with a mechanical structure to realize the locking function, that is, after entering the wind-proof mode, the photovoltaic tracking angle of the photovoltaic components of the first component partition of the target is adjusted to a preset angle that can withstand the wind force, and then the photovoltaic tracking angle of the photovoltaic components is locked by controlling the mechanical structure. For example, the lock is triggered on the mechanical structure to lock the tracking system at multiple points, and the driving device is not required to withstand the wind load force, which reduces the force on the motor transmission device and improves reliability.

[0084] Method 3: The first target component partition uses a fixed bracket. Because the fixed bracket cannot be adjusted, its structural design is relatively tighter and more reliable, so the fixed bracket is set on the periphery to withstand strong winds. At this time, there is no need to adjust the photovoltaic tracking angle of the photovoltaic components in the first target component partition, but the default angle is used.

[0085] S14. Based on the wind speed of the target second component partition, adjust the photovoltaic tracking angle of the photovoltaic components in the target second component partition.

[0086] For the photovoltaic array of the target second component partition, the wind speed has been greatly reduced after the active obstruction of the target first component partition, but it is still impossible to ensure that the target second component partition is completely less than the safe operating wind speed. Therefore, the "semi-tracking mode" is adopted.

[0087] Specifically, step S14 may include:

[0088] 1) Obtaining the wind speed of the target second component partition after the photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted.

[0089] After the photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted, the photovoltaic components of the target first component partition can withstand part of the wind force, thereby reducing the wind force borne by the photovoltaic components of the target second component partition. At this time, data from the wind sensor of the target second component partition is collected to obtain the wind speed of the target second component partition.

[0090] 2) When the wind speed of the target second component partition is greater than a preset maximum wind speed, the maximum working angle and the optimal power generation angle corresponding to the wind speed of the target second component partition are obtained.

[0091] If the wind speed of the target second component partition is greater than the preset maximum wind speed W_th, it means that due to the active obstruction of the target first component partition, the wind speed of the target second component partition is still relatively large, and the photovoltaic tracking angle still needs to be adjusted according to the wind speed.

[0092] At this time, the maximum working angle and the optimal power generation angle under the current wind speed can be determined.

[0093] The maximum working angle corresponding to the wind speed of the target second component partition may be determined according to a pre-configured correspondence between the wind speed and the maximum working angle.

[0094] The optimal power generation angle can be calculated by the controller.

[0095] 3) adjusting the photovoltaic tracking angle of the photovoltaic components in the target second component partition to a smaller value between the maximum operating angle and the optimal power generation angle.

[0096] That is, photovoltaic tracking angle = min(|optimal power generation angle|, |maximum working angle|).

[0097] Reference Figure 8 , Figure 8 A simple illustration of two angles is given. θ1 is the optimal power generation angle at the current moment, and θ2 is the maximum working angle under the current wind speed. Obviously, θ2 is smaller and has stricter angle requirements, so θ2 is taken as the final photovoltaic tracking angle. At this time, the posture of the photovoltaic module slightly sacrifices part of the power generation because of taking into account reliability, but there is still some power generation benefit overall, so it is defined as semi-tracking mode.

[0098] Of course, ideally, if the calculated optimal power generation angle θ1 at the current moment is smaller than the maximum operating angle θ2 at the current wind speed, then it is the normal tracking mode and will not affect the power generation.

[0099] Furthermore, the wind loads in different areas of the target second component partition are also different. In order to be able to control the photovoltaic tracking angle more accurately, the target second component partition can also be sub-partitioned, and the target second component partition can be divided into a first sub-partition corresponding to the target wind parameter and with a wind load greater than a preset sub-wind load threshold and a second sub-partition with a wind load not greater than the preset sub-wind load threshold.

[0100] Reference Fig. 9 , the first sub-partition is like the second partition A, and the second sub-partition is like the second partition B. The second partition A executes the semi-tracking mode, and the second partition B executes the tracking mode.

[0101] Then the photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted to the smaller value of the maximum working angle and the optimal power generation angle, including:

[0102] The photovoltaic tracking angle of the photovoltaic components in the first sub-area is adjusted to the smaller value of the maximum working angle and the optimal power generation angle, and the photovoltaic tracking angle of the photovoltaic components in the second sub-area is adjusted to the optimal power generation angle.

[0103] In addition, for the target second component partition, in addition to partitioning according to wind load, partitioning can also be performed according to wind speed.

[0104] In another implementation of the present invention, when the detected wind speed of the target first component partition or the target second component partition is within W_th, the corresponding partition automatically enters the normal tracking mode.

[0105] In this embodiment, when there is a target wind parameter that meets the preset angle adjustment rule, the target first component partition and the target second component partition corresponding to the target wind parameter are determined, the photovoltaic tracking angle of the photovoltaic components in the target first component partition is adjusted to a preset angle that can resist the wind force, and based on the wind speed of the target second component partition, the photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted. That is, in the present invention, the target first component partition is used to resist and attenuate the wind force, thereby reducing the wind force in the target second component partition, so that the photovoltaic components in the target second component partition can be used to generate electricity. Compared with the method of adjusting the photovoltaic components to a horizontal posture, the present invention can increase the irradiation area while taking into account protection through partition tracking, thereby increasing the power generation of most areas of the photovoltaic system.

[0106] In addition, the design of conventional tracking systems requires more structural materials in accordance with the requirements of safe wind speed protection in the entire area. The use of partitioned tracking protection can reduce the material cost of the inner area.

[0107] Optionally, based on the above-mentioned embodiment of the photovoltaic tracking method, another embodiment of the present invention provides a photovoltaic tracking device, which is applied to a controller in a photovoltaic tracking system, referring to Fig.10 , the photovoltaic tracking device comprises:

[0108] A parameter acquisition module 11 is used to acquire target wind parameters that meet preset angle adjustment rules;

[0109] A partition determination module 12, configured to determine a target first component partition and a target second component partition corresponding to the target wind parameter;

[0110] The angle adjustment module 13 is used to adjust the photovoltaic tracking angle of the photovoltaic components in the target first component partition to a preset angle capable of withstanding wind force, and to adjust the photovoltaic tracking angle of the photovoltaic components in the target second component partition based on the wind speed in the target second component partition.

[0111] Furthermore, the parameter acquisition module 11 is specifically used for:

[0112] Obtaining wind parameters at different locations of the photovoltaic module; the wind parameters include wind speed and wind direction;

[0113] A wind parameter whose wind speed is greater than a preset maximum wind speed is determined and used as a target wind parameter.

[0114] Further, the partition determination module 12 is specifically used for:

[0115] Based on the correspondence between the wind parameters, the first component partition and the second component partition, the target first component partition and the target second component partition corresponding to the target wind parameters are determined; wherein, under different wind parameters, the photovoltaic components in the photovoltaic tracking system are divided into a first component partition whose wind load is greater than a preset wind load threshold and a second component partition whose wind load is not greater than the preset wind load threshold.

[0116] Further, when the angle adjustment module 13 is used to adjust the photovoltaic tracking angle of the photovoltaic components of the target first component partition to a preset angle capable of resisting wind force, it is specifically used to:

[0117] Adjusting the photovoltaic tracking angle of the photovoltaic components of the target first component partition to a maximum preset angle capable of withstanding wind force;

[0118] Or, the photovoltaic tracking angle of the photovoltaic components in the target first component partition is adjusted to an angle that can withstand wind force and decreases in sequence according to the wind-exposed position of the photovoltaic components in the target first component partition; the minimum photovoltaic tracking angle of the photovoltaic components in the target first component partition is greater than the minimum preset angle that can withstand wind force.

[0119] Furthermore, it also includes:

[0120] The locking module is used to lock the photovoltaic tracking angle of the photovoltaic module by controlling the mechanical structure.

[0121] Further, the angle adjustment module 13 is used to adjust the photovoltaic tracking angle of the photovoltaic components in the target second component partition based on the wind speed of the target second component partition, specifically for:

[0122] Acquire the wind speed of the target second component partition after the photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted;

[0123] When the wind speed of the target second component partition is greater than the preset maximum wind speed, obtaining the maximum working angle and the optimal power generation angle corresponding to the wind speed of the target second component partition;

[0124] The photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted to a smaller value between the maximum working angle and the optimal power generation angle.

[0125] Further, the target second component partition includes a first sub-partition corresponding to the target wind parameter, the wind load of which is greater than a preset sub-wind load threshold, and a second sub-partition whose wind load is not greater than the preset sub-wind load threshold;

[0126] The angle adjustment module 13 is used to adjust the photovoltaic tracking angle of the photovoltaic components in the target second component partition to the smaller value of the maximum working angle and the optimal power generation angle, specifically for:

[0127] The photovoltaic tracking angle of the photovoltaic components in the first sub-area is adjusted to the smaller value of the maximum working angle and the optimal power generation angle, and the photovoltaic tracking angle of the photovoltaic components in the second sub-area is adjusted to the optimal power generation angle.

[0128] In this embodiment, when there is a target wind parameter that satisfies the preset angle adjustment rule, the target first component partition and the target second component partition corresponding to the target wind parameter are determined, the photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted to a preset angle that can resist the wind force, and based on the wind speed of the target second component partition, the photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted. That is, in the present invention, the target first component partition is used to resist and attenuate the wind force, thereby reducing the wind force of the target second component partition, so that the photovoltaic components in the target second component partition can be used to generate electricity. Compared with the method of adjusting the photovoltaic components to a horizontal posture, the irradiation area can be increased, thereby increasing the power generation of the photovoltaic system.

[0129] It should be noted that, for the working process of each module in this embodiment, please refer to the corresponding description in the above embodiment, which will not be repeated here.

[0130] Optionally, based on the above-mentioned embodiments of the photovoltaic tracking method and device, another embodiment of the present invention provides a controller, including: a memory and a processor;

[0131] Wherein, the memory is used to store programs;

[0132] The processor calls the program and is used to execute the above photovoltaic tracking method.

[0133] Optionally, based on the above control embodiment, another embodiment of the present invention provides a photovoltaic tracking system, including the above controller.

[0134] Further, it also includes wind sensors and trackers;

[0135] The controller obtains wind parameters collected by the wind sensor, and controls the tracker to adjust the photovoltaic tracking angle of the photovoltaic assembly through the wind parameters.

[0136] For the working process of each component in the photovoltaic tracking system in this embodiment, please refer to the corresponding description in the above embodiment.

[0137] In this embodiment, when there is a target wind parameter that meets the preset angle adjustment rule, the target first component partition and the target second component partition corresponding to the target wind parameter are determined, the photovoltaic tracking angle of the photovoltaic components in the target first component partition is adjusted to a preset angle that can resist the wind force, and based on the wind speed of the target second component partition, the photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted. That is, in the present invention, the target first component partition is used to resist and attenuate the wind force, thereby reducing the wind force in the target second component partition, so that the photovoltaic components in the target second component partition can be used to generate electricity. Compared with the method of adjusting the photovoltaic components to a horizontal posture, the present invention can increase the irradiation area while taking into account protection through partition tracking, thereby increasing the power generation of most areas of the photovoltaic system.

[0138] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A photovoltaic tracking method, characterized in that: A controller applied to a photovoltaic tracking system, wherein the photovoltaic tracking method comprises: Obtain target wind parameters that meet preset angle adjustment rules; Determine a target first component partition and a target second component partition corresponding to the target wind parameter; Adjusting the photovoltaic tracking angle of the photovoltaic components in the target first component partition to a preset angle capable of withstanding wind force, and adjusting the photovoltaic tracking angle of the photovoltaic components in the target second component partition based on the wind speed in the target second component partition; Wherein, adjusting the photovoltaic tracking angle of the photovoltaic components in the target second component partition based on the wind speed of the target second component partition includes: Acquire the wind speed of the target second component partition after the photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted; When the wind speed of the target second component partition is greater than the preset maximum wind speed, obtaining the maximum working angle and the optimal power generation angle corresponding to the wind speed of the target second component partition; Adjusting the photovoltaic tracking angle of the photovoltaic components in the target second component partition to a smaller value between the maximum working angle and the optimal power generation angle; The target second component partition includes a first sub-partition corresponding to the target wind parameter, whose wind load is greater than a preset sub-wind load threshold, and a second sub-partition whose wind load is not greater than the preset sub-wind load threshold; The photovoltaic tracking angle of the photovoltaic components in the target second component partition is adjusted to a smaller value between the maximum working angle and the optimal power generation angle, comprising: The photovoltaic tracking angle of the photovoltaic components in the first sub-area is adjusted to the smaller value between the maximum working angle and the optimal power generation angle, and the photovoltaic tracking angle of the photovoltaic components in the second sub-area is adjusted to the optimal power generation angle.

2. The photovoltaic tracking method according to claim 1, characterized in that: Get the target wind parameters that meet the preset angle adjustment rules, including: Obtaining wind parameters at different locations of the photovoltaic module; the wind parameters include wind speed and wind direction; A wind parameter whose wind speed is greater than a preset maximum wind speed is determined and used as a target wind parameter.

3. The photovoltaic tracking method according to claim 1, characterized in that: Determining a target first component partition and a target second component partition corresponding to the target wind parameter includes: Based on the correspondence between the wind parameters, the first component partition and the second component partition, the target first component partition and the target second component partition corresponding to the target wind parameters are determined; wherein, under different wind parameters, the photovoltaic components in the photovoltaic tracking system are divided into a first component partition whose wind load is greater than a preset wind load threshold and a second component partition whose wind load is not greater than the preset wind load threshold.

4. The photovoltaic tracking method according to claim 1, characterized in that: The photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted to a preset angle capable of resisting wind force, comprising: Adjusting the photovoltaic tracking angle of the photovoltaic components of the target first component partition to a maximum preset angle capable of withstanding wind force; Alternatively, the photovoltaic tracking angle of the photovoltaic components in the target first component partition is adjusted to an angle that can withstand wind force and decreases in sequence according to the wind-exposed position of the photovoltaic components in the target first component partition; the minimum photovoltaic tracking angle of the photovoltaic components in the target first component partition is greater than the minimum preset angle that can withstand wind force.

5. The photovoltaic tracking method according to claim 1, characterized in that: After adjusting the photovoltaic tracking angle of the photovoltaic components of the target first component partition to a preset angle capable of withstanding wind force, the method further includes: The photovoltaic tracking angle of the photovoltaic module is locked by controlling the mechanical structure.

6. A photovoltaic tracking device, characterized in that: A controller used in a photovoltaic tracking system, the photovoltaic tracking device comprising: A parameter acquisition module, used to acquire target wind parameters that meet preset angle adjustment rules; A partition determination module, used to determine a target first component partition and a target second component partition corresponding to the target wind parameter; An angle adjustment module, used to adjust the photovoltaic tracking angle of the photovoltaic components in the target first component partition to a preset angle capable of resisting wind force, and adjust the photovoltaic tracking angle of the photovoltaic components in the target second component partition based on the wind speed of the target second component partition; The angle adjustment module adjusts the photovoltaic tracking angle of the photovoltaic components in the target second component partition based on the wind speed of the target second component partition, including: Acquire the wind speed of the target second component partition after the photovoltaic tracking angle of the photovoltaic components of the target first component partition is adjusted; When the wind speed of the target second component partition is greater than the preset maximum wind speed, obtaining the maximum working angle and the optimal power generation angle corresponding to the wind speed of the target second component partition; Adjusting the photovoltaic tracking angle of the photovoltaic components in the target second component partition to a smaller value between the maximum working angle and the optimal power generation angle; The target second component partition includes a first sub-partition corresponding to the target wind parameter, whose wind load is greater than a preset sub-wind load threshold, and a second sub-partition whose wind load is not greater than the preset sub-wind load threshold; The angle adjustment module adjusts the photovoltaic tracking angle of the photovoltaic components in the target second component partition to a smaller value between the maximum working angle and the optimal power generation angle, including: The photovoltaic tracking angle of the photovoltaic components in the first sub-area is adjusted to the smaller value between the maximum working angle and the optimal power generation angle, and the photovoltaic tracking angle of the photovoltaic components in the second sub-area is adjusted to the optimal power generation angle.

7. A controller, characterized in that: include: Memory and processor; Wherein, the memory is used to store programs; The processor calls the program and is used to execute the photovoltaic tracking method as described in any one of claims 1-5.

8. A photovoltaic tracking system, characterized in that: Comprising a controller as claimed in claim 7.

9. The photovoltaic tracking system according to claim 8, characterized in that: Also included are wind sensors and trackers; The controller obtains wind parameters collected by the wind sensor, and controls the tracker to adjust the photovoltaic tracking angle of the photovoltaic assembly through the wind parameters.

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