LU504047B1 - A photovoltaic tracking bracket control method and system - Google Patents
A photovoltaic tracking bracket control method and system Download PDFInfo
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- LU504047B1 LU504047B1 LU504047A LU504047A LU504047B1 LU 504047 B1 LU504047 B1 LU 504047B1 LU 504047 A LU504047 A LU 504047A LU 504047 A LU504047 A LU 504047A LU 504047 B1 LU504047 B1 LU 504047B1
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000005855 radiation Effects 0.000 claims description 13
- 238000009499 grossing Methods 0.000 claims description 4
- 238000010248 power generation Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- 238000013316 zoning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The present invention discloses a photovoltaic tracking bracket control method and system, relates to the technical field of photovoltaic power generation. The method comprises the following steps: Dividing a photovoltaic power plant into a plurality of sub-areas, according to geographical information data; Determining the optimal tracking angle of photovoltaic tracking brackets in each sub-area, and controlling the photovoltaic tracking brackets in each sub-area to be adjusted according to the corresponding optimal tracking angle; Determining the operating accuracy of the photovoltaic tracking bracket according to the irradiance at a preset time interval, and calibrating continuously the optimal tracking angle-adjusted photovoltaic tracking bracket to make its actual angle become the optimal tracking angle. According to the present invention, the photovoltaic tracking bracket can be adjusted according to the actual conditions, the power generation efficiency of the photovoltaic power plant and the adjusting accuracy of the tracking angle are improved.
Description
BL-5654
LU504047
A PHOTOVOLTAIC TRACKING BRACKET CONTROL METHOD
AND SYSTEM
The present invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic tracking bracket control method and a system.
The photovoltaic industry has a very long industrial chain, which mainly includes: silicon material, silicon wafer, battery piece, module, tracking bracket, inverter, photovoltaic device, service provider, etc. The connection between the links 1s very close, especially the transfer cost at upstream end can greatly affect the downstream installation demand and capacity, further affecting the development and profit distribution of the whole industry. At present, the photovoltaic industry is growing vigorously at a rate visible to the naked eye, but the photovoltaic tracking bracket often ignored is a monopoly industry abroad.
Photovoltaic bracket, as the name suggests, it's a frame for fixing a photovoltaic module, which mainly plays a role in protecting the photovoltaic module from damage by strong wind and other external factors. Traditional fixing bracket usually selects an inclined installation angle to absorb sunlight better, however, this inclined angle often is an angle where the sunlight intensity is the most around the year. And it cannot be adjusted or can only be manually adjusted according to the seasonal changes of the sunlight, which is time-consuming and labor-consuming. In order to solve the problem of sunlight absorption of the module, a tracking bracket is launched in this field.
For example, the invention patent (Publication No. CN107302340A) 1
BL-5654 disclosed a "Biaxial flexible photovoltaic tracking bracket", adopting steel rope as 204047 the supporting beam structure of the solar panel, which can be well adapted to installations in complicated mountain, fish pond, agricultural greenhouses and other scenarios. At the same time, an angle adjusting device is used to adjust the inclined angle of solar radiation throughout the year, so that the solar panel faces the direction of the sunlight all the time. However, in this patent, the structural design is complex, the assembly density requirements are high, and it's inconvenient to use. Furthermore, it also has defects in operational convenience, power generation efficiency and control accuracy.
Therefore, how to adjust the rotation angle of the photovoltaic tracking bracket more accurately and conveniently according to the actual conditions and improve the power generation efficiency became an urgent problem to be solved by technicians in this field.
For this purpose, the present invention provides a photovoltaic tracking bracket control method and a system, which is convenient to operate, and can adjust the photovoltaic tracking bracket according to the actual conditions and improve the power generation efficiency of the photovoltaic power plant.
To achieve the foregoing purpose, the present invention 1s implemented with the following technical scheme:
A photovoltaic tracking bracket control method, which comprises the following steps:
Dividing a photovoltaic power plant into a plurality of sub-areas, according to geographical information data;
Determining the optimal tracking angle of photovoltaic tracking brackets in each sub-area, and controlling the photovoltaic tracking brackets in each sub-area to be adjusted according to the corresponding optimal tracking angle; 2
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Determining the operating accuracy of the photovoltaic tracking bracket 204047 according to the irradiance at a preset time interval, and calibrating continuously the optimal tracking angle-adjusted photovoltaic tracking bracket to make its actual angle become the optimal tracking angle.
The technical effects: achieved by the above technical scheme are: A photovoltaic power plant is divided into a plurality of sub-areas and the optimal tracking angles of the photovoltaic tracking bracket in different sub-areas are determined to improve the adjusting efficiency and control accuracy; Calibration is carried out after adjusting the tracking angles, which can further ensure that the photovoltaic tracking bracket is adjusted to the optimal tracking angle while improving the power generation efficiency of the photovoltaic power plant.
Preferably, the step of dividing the photovoltaic power plant into a plurality of sub-areas specifically includes the following steps:
Determining a plurality of preliminary sub-areas according to the layout information, equipment capacity and capacity ratio of the photovoltaic power plant;
Determining the preset actual capacity of each preliminary sub-area, adjusting the photovoltaic tracking bracket based on the difference between the preset capacity and the actual capacity until the difference between the two in each preliminary sub-area meets a preset condition, determining the plurality of adjusted sub-areas as the target sub-areas of the photovoltaic power plant.
The technical effects: achieved by the above technical scheme are: A specific zoning method for the photovoltaic power plant is disclosed. The divided sub-areas can make the zoning of the photovoltaic power plant more refined and rational according to the actual conditions, and improve the area management efficiency.
Preferably, the step of determining the optimal tracking angle of the photovoltaic tracking brackets in each sub-area comprises the following steps specifically: 3
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Installing a photovoltaic module on each photovoltaic tracking bracket, and oY selecting one photovoltaic tracking bracket from each sub-area as a reference tracking bracket of the corresponding sub-area;
Continuously adjusting the rotation angle of the reference tracking bracket, acquiring the generating capacity of the photovoltaic module corresponding to the reference tracking bracket under each rotation angle;
Taking rotation angle corresponding to the maximum generating capacity of the photovoltaic module as the optimal tracking angle of the photovoltaic tracking bracket in the corresponding sub-area.
The technical effects: achieved by the above technical scheme are: The rotation angle corresponding to the maximum generating capacity is taken as the optimal tracking angle of the corresponding sub-area, which can adjust more accurately according to actual conditions to make the photovoltaic module reach the maximum generating capacity, and also can improve the power generation efficiency of the photovoltaic power plant and maximize the generating capacity.
Preferably, the method further comprises:
Connecting the photovoltaic module to an inverter, generating a control command of the optimal tracking angle according to the AC power state, electric parameter and tracking command and controlling the photovoltaic tracking bracket to adjust its tracking angle;
Switching the AC power state of the inverter to AC threshold-power state, when the AC power of the inverter reaches the maximum preset power.
The technical effects: achieved by the above technical scheme are: Switching the AC power state of the inverter can avoid the inverter DC voltage from being too high and improve the service life of the components inside the inverter.
Preferably, the step of determining the optimal tracking angle of the photovoltaic tracking brackets in each sub-area comprises the following steps specifically: 4
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Acquiring the initial radiation data of the photovoltaic tracking bracket este each sub-area, when the output power data of the inverter meet a preset full-load condition within a preset time;
Smoothing the initial radiation data to obtain a smooth radiation data;
Obtaining a smooth tracking angle according to the smooth radiation data and taking it as the optimal tracking angle of the photovoltaic tracking bracket in the corresponding sub-area.
The technical effects: achieved by the above technical scheme are: Another determining method of the optimal tracking angle is disclosed, which can solve the problem of wide fluctuation range of the tracking angles and reduce the influence of data fluctuation on tracking brackets.
Preferably, each sub-area comprises several rows of tracking brackets inside;
Adopting an asynchronous tracking mode for every two adjacent rows of tracking brackets, that is, one row of tracking bracket is subject to apparent solar trajectory tracking, and the adjacent row of tracking brackets is subject to opposite tracking.
The technical effects: achieved by the above technical scheme are: The asynchronous tracking method can avoid shadow blocking between photovoltaic modules and improve power generation efficiency.
Preferably, the operating accuracy of photovoltaic tracking bracket can be determined according to the irradiance, which specifically comprises the following steps:
Measuring the photovoltaic tracking bracket in each sub-area at a preset time interval and collecting the irradiance of the corresponding sub-area;
Calculating the irradiance deviation of the photovoltaic tracking bracket in each sub-area with the maximum irradiance of the photovoltaic tracking bracket as a reference in each sub-area, adjusting the tracking angle of the photovoltaic tracking bracket in the corresponding sub-area according to the irradiance deviation.
BL-5654
The technical effects: achieved by the above technical scheme ares
Determining the adjustment accuracy of photovoltaic tracking bracket's tracking angles can further calibrate the adjusting angles according to the results and improve the control accuracy of the photovoltaic tracking brackets.
Preferably, the method further comprises:
Determining the rotatable range of the photovoltaic tracking bracket according to the actual angle of the photovoltaic tracking bracket, rotation time interval, change rate of solar position change rate and the photovoltaic module's irradiance;
Controlling the photovoltaic tracking bracket to rotate to the optimal tracking angle if the optimal tracking angle falls within the rotatable range on the basis of the actual angle;
Controlling the photovoltaic tracking bracket to rotate to a critical angle if the optimal tracking angle does not fall within the rotatable range on the basis of the actual angle.
The present invention further discloses a photovoltaic tracking bracket control system, which comprises: a division module, a determining module, an adjusting module and a calibration module; wherein, the division module is used for dividing a photovoltaic power plant into a plurality of sub-areas, according to geographical information data; the determining module is used for determining the optimal tracking angle of the photovoltaic tracking bracket in each sub-area;
An adjusting module for controlling the photovoltaic tracking brackets in each sub-area to be adjusted according to the corresponding optimal tracking angle;
A calibration module for determining the operating accuracy of the photovoltaic tracking bracket according to the irradiance at a preset time interval, and calibrating continuously the optimal tracking angle-adjusted photovoltaic tracking bracket to make its actual angle become the optimal tracking angle. 6
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Preferably, each photovoltaic tracking bracket is installed with a photovoltaic module connected with an inverter.
From the above technical scheme, compared with the prior art, the present invention provides a photovoltaic tracking bracket control method and a system, which have the following beneficial effects: (1) According to the present invention, a photovoltaic power plant is divided into a plurality of sub-areas and the optimal tracking angles of the photovoltaic tracking bracket in different sub-areas are determined to improve the adjusting efficiency and control accuracy, The adjustment accuracy of the photovoltaic tracking bracket's tracking angle is determined, and calibration is carried out after adjusting the tracking angle, which can further ensure that the photovoltaic tracking bracket is adjusted to the optimal tracking angle, at the same time, the power generation efficiency of the photovoltaic power plant is improved; (2) In the present invention, the rotation angle corresponding to the maximum generating capacity 1s taken as the optimal tracking angle of the corresponding sub-area, which can adjust more accurately according to actual conditions to make the photovoltaic module reach the maximum generating capacity, and also can improve the power generation efficiency of the photovoltaic power plant and maximize the generating capacity; The irradiation data is subject to smoothing, which can solve the problem of wide fluctuation range of the tracking angles from the source and reduce the influence of data fluctuation on tracking brackets; (3) In the present invention, the photovoltaic power plant is subject to sub-area division according to the actual conditions, so that the zoning is more refined and rational, and the area management efficiency is improved.
To better describe the embodiments of the present invention or the technical scheme of the prior art, a brief introduction of the accompanying drawings to be 7
BL-5654 used in the descriptions of the embodiments or the prior art is made er
Obviously, the drawings below are only the embodiments of the present invention, and for those ordinarily skilled in the art, other drawings based on such drawings can be obtained without making creative endeavors.
Fig. 1 is a flow chart of a photovoltaic tracking bracket control method;
Fig. 2 1s a structural diagram of a photovoltaic tracking bracket control system.
The technical schemes in the embodiments of the present invention are clearly and completely described below in combination with the drawings of the embodiments of the present invention. Obviously, such embodiments are just a part of embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all the other embodiments obtained by those ordinarily skilled in the art without making creative endeavors shall fall into the scope of protection of the present invention.
Photovoltaic supports are mainly divided into fixing brackets and tracking brackets, and the specific models of the tracking brackets are closely related to the project site and landform. Tracking brackets are often used in surface power stations. Although using tracking brackets can improve the initial investment and operation & maintenance cost, the power generation benefits are obvious, and a lower power consumption cost can be achieved. Therefore, the demand for tracking bracket around the world is increasing. Aiming at the problems of photovoltaic tracking brackets in the prior art in control accuracy, operational convenience and power generation efficiency, the embodiments of the present invention disclose a photovoltaic tracking bracket control method as shown in Fig. 1, which comprises the following steps: 8
BL-5654
Dividing a photovoltaic power plant into a plurality of sub-areas, according fo 94087 geographical information data;
Determining the optimal tracking angle of photovoltaic tracking brackets in each sub-area, and controlling the photovoltaic tracking brackets in each sub-area to be adjusted according to the corresponding optimal tracking angle;
Determining the operating accuracy of the photovoltaic tracking bracket according to the irradiance at a preset time interval, and calibrating continuously the optimal tracking angle-adjusted photovoltaic tracking bracket to make its actual angle become the optimal tracking angle.
Further, the step of dividing the photovoltaic power plant into a plurality of sub-areas specifically includes the following steps:
Determining a plurality of preliminary sub-areas according to the layout information, equipment capacity and capacity ratio of the photovoltaic power plant;
Determining the preset actual capacity of each preliminary sub-area, adjusting the photovoltaic tracking bracket based on the difference between the preset capacity and the actual capacity until the difference between the two in each preliminary sub-area meets a preset condition, determining the plurality of adjusted sub-areas as the target sub-areas of the photovoltaic power plant.
The optimal power generation angles of each photovoltaic module at the same geographic location are basically the same, therefore, in order to improve the adjustment speed, the photovoltaic power plant 1s divided into a plurality of sub-areas, which are adjusted uniformly and suitable for tracking control and a large photovoltaic power plant.
Further, the step of determining the optimal tracking angle of the photovoltaic tracking brackets in each sub-area comprises the following steps specifically:
Installing a photovoltaic module on each photovoltaic tracking bracket, and selecting one photovoltaic tracking bracket from each sub-area as a reference tracking bracket of the corresponding sub-area; 9
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Continuously adjusting the rotation angle of the reference tracking bracket. acquiring the generating capacity of the photovoltaic module corresponding to the reference tracking bracket under each rotation angle;
Taking rotation angle corresponding to the maximum generating capacity of the photovoltaic module as the optimal tracking angle of the photovoltaic tracking bracket in the corresponding sub-area.
The rotation angle corresponding to the maximum generating capacity is taken as the optimal tracking angle of the corresponding sub-area, then the tracking bracket is controlled to be adjusted accordingly, so that the photovoltaic module can reach the maximum generating capacity, and also the power generation efficiency of the photovoltaic power plant can be improved.
Furthermore, the method further comprises:
Connecting the photovoltaic module to an inverter, generating a control command of the optimal tracking angle according to the AC power state, electric parameter and tracking command and controlling the photovoltaic tracking bracket to adjust its tracking angle;
Switching the AC power state of the inverter to AC threshold-power state, when the AC power of the inverter reaches the maximum preset power.
Further, the step of determining the optimal tracking angle of the photovoltaic tracking brackets in each sub-area comprises the following steps specifically:
Acquiring the initial radiation data of the photovoltaic tracking bracket in each sub-area, when the output power data of the inverter meet a preset full-load condition within a preset time;
Smoothing the initial radiation data to obtain a smooth radiation data;
Obtaining a smooth tracking angle according to the smooth radiation data and taking it as the optimal tracking angle of the photovoltaic tracking bracket in the corresponding sub-area.
Further, each sub-area comprises several rows of tracking brackets inside;
BL-5654
Adopting an asynchronous tracking mode for every two adjacent rows of 904007 tracking brackets, that is, one row of tracking bracket is subject to apparent solar trajectory tracking, and the adjacent row of tracking brackets is subject to opposite tracking.
Further, the operating accuracy of photovoltaic tracking bracket can be determined according to the irradiance, which specifically comprises the following steps:
Measuring the photovoltaic tracking bracket in each sub-area at a preset time interval and collecting the irradiance of the corresponding sub-area;
Calculating the irradiance deviation of the photovoltaic tracking bracket in each sub-area with the maximum irradiance of the photovoltaic tracking bracket as a reference in each sub-area, adjusting the tracking angle of the photovoltaic tracking bracket in the corresponding sub-area according to the irradiance deviation.
Further, the method further comprises:
Determining the rotatable range of the photovoltaic tracking bracket according to the actual angle of the photovoltaic tracking bracket, rotation time interval, change rate of solar position change rate and the photovoltaic module's irradiance;
Controlling the photovoltaic tracking bracket to rotate to the optimal tracking angle if the optimal tracking angle falls within the rotatable range on the basis of the actual angle;
Controlling the photovoltaic tracking bracket to rotate to a critical angle if the optimal tracking angle does not fall within the rotatable range on the basis of the actual angle.
Corresponding to the method shown in Fig. 1, the embodiment of the present invention further provides a photovoltaic tracking bracket control system for implementing the method shown in Fig. 1. A photovoltaic tracking bracket control system provided by the embodiment of the present invention can be applied to 11
BL-5654 application computer terminals or various mobile devices; wherein, structural 0 diagram of the control system is shown in Fig. 2, comprising: a division module, a determining module, an adjusting module and a calibration module; wherein, the division module is used for dividing a photovoltaic power plant into a plurality of sub-areas, according to geographical information data;
The determining module is used for determining the optimal tracking angle of the photovoltaic tracking bracket in each sub-area;
An adjusting module for controlling the photovoltaic tracking brackets in each sub-area to be adjusted according to the corresponding optimal tracking angle;
A calibration module for determining the operating accuracy of the photovoltaic tracking bracket according to the irradiance at a preset time interval, and calibrating continuously the optimal tracking angle-adjusted photovoltaic tracking bracket to make its actual angle become the optimal tracking angle.
Further, each photovoltaic tracking bracket is installed with a photovoltaic module connected with an inverter.
Based on the above technical scheme, in the present invention, a photovoltaic power plant is divided into a plurality of sub-areas and the optimal tracking angles of the photovoltaic tracking bracket in different sub-areas are determined to improve the adjusting efficiency and control accuracy; The adjustment accuracy of the photovoltaic tracking bracket's tracking angle is determined, and calibration is carried out after adjusting the tracking angle, which can further ensure that the photovoltaic tracking bracket is adjusted to the optimal tracking angle, at the same time, the power generation efficiency of the photovoltaic power plant is improved.
Each embodiment in this specification is described in a progressive manner, focusing on its differences from other embodiments, and the same and similar parts between embodiments can be referred to mutually. For the system disclosed in the embodiment, the description is relatively simple since it corresponds to the method disclosed in the embodiment, and reference can be made to the method description section when needed. 12
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The above description of the disclosed embodiments can help those skilled este the art to practice or use the present invention. Modifications of the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the essence or the scope of the present invention. Accordingly, the present invention will not be limited to the embodiments described herein, but will cover the widest scope consistent with the principles and novel features provided herein. 13
Claims (10)
- BL-5654 CLAIMS LU504047I. A photovoltaic tracking bracket control method, which is characterized in that, it comprises the following steps: Dividing a photovoltaic power plant into a plurality of sub-areas, according to geographical information data: Determining the optimal tracking angle of photovoltaic tracking brackets in each sub-area, and controlling the photovoltaic tracking brackets in each sub-area to be adjusted according to the corresponding optimal tracking angle; Determining the operating accuracy of the photovoltaic tracking bracket according to the irradiance at a preset time interval, and calibrating continuously the optimal tracking angle-adjusted photovoltaic tracking bracket to make its actual angle become the optimal tracking angle.
- 2. A photovoltaic tracking bracket control method according to claim 1, which is characterized in that, a photovoltaic power plant is divided into a plurality of sub-areas, specifically comprising the following steps: Determining a plurality of preliminary sub-areas according to the layout information, equipment capacity and capacity ratio of the photovoltaic power plant; Determining the preset actual capacity of each preliminary sub-area, adjusting the photovoltaic tracking bracket based on the difference between the preset capacity and the actual capacity until the difference between the two in each preliminary sub-area meets a preset condition, determining the plurality of adjusted sub-areas as the target sub-areas of the photovoltaic power plant.
- 3. A photovoltaic tracking bracket control method according to claim 1, which is characterized in that, the optimal tracking angle of the photovoltaic tracking bracket in each sub-area 1s determined, which specifically comprises the following steps: 14BL-5654 Installing a photovoltaic module on each photovoltaic tracking bracket, and oY selecting one photovoltaic tracking bracket from each sub-area as a reference tracking bracket of the corresponding sub-area; Continuously adjusting the rotation angle of the reference tracking bracket, acquiring the generating capacity of the photovoltaic module corresponding to the reference tracking bracket under each rotation angle; Taking rotation angle corresponding to the maximum generating capacity of the photovoltaic module as the optimal tracking angle of the photovoltaic tracking bracket in the corresponding sub-area.
- 4. A photovoltaic tracking bracket control method according to claim 3, which is characterized in that, the method further comprises: Connecting the photovoltaic module to an inverter, generating a control command of the optimal tracking angle according to the AC power state, electric parameter and tracking command and controlling the photovoltaic tracking bracket to adjust its tracking angle; Switching the AC power state of the inverter to AC threshold-power state, when the AC power of the inverter reaches the maximum preset power.
- 5. A photovoltaic tracking bracket control method according to claim 1, which is characterized in that, the optimal tracking angle of the photovoltaic tracking bracket in each sub-area 1s determined, which specifically comprises the following steps: Acquiring the initial radiation data of the photovoltaic tracking bracket in each sub-area, when the output power data of the inverter meet a preset full-load condition within a preset time; Smoothing the initial radiation data to obtain a smooth radiation data; Obtaining a smooth tracking angle according to the smooth radiation data and taking it as the optimal tracking angle of the photovoltaic tracking bracket in the corresponding sub-area.BL-5654
- 6. A photovoltaic tracking bracket control method according to claim po which is characterized in that, each sub-area comprises several lines of tracking brackets; Adopting an asynchronous tracking mode for every two adjacent rows of tracking brackets, that is, one row of tracking bracket is subject to apparent solar trajectory tracking, and the adjacent row of tracking brackets is subject to opposite tracking.
- 7. A photovoltaic tracking bracket control method according to claim 1, which is characterized in that, the operating accuracy of the photovoltaic tracking bracket is determined according to the irradiance, which specifically comprises the following steps: Measuring the photovoltaic tracking bracket in each sub-area at a preset time interval and collecting the irradiance of the corresponding sub-area; Calculating the irradiance deviation of the photovoltaic tracking bracket in each sub-area with the maximum irradiance of the photovoltaic tracking bracket as a reference in each sub-area, adjusting the tracking angle of the photovoltaic tracking bracket in the corresponding sub-area according to the irradiance deviation.
- 8. A photovoltaic tracking bracket control method according to claim 1, which is characterized in that, the method further comprises: Determining the rotatable range of the photovoltaic tracking bracket according to the actual angle of the photovoltaic tracking bracket, rotation time interval, change rate of solar position change rate and the photovoltaic module's irradiance; Controlling the photovoltaic tracking bracket to rotate to the optimal tracking angle if the optimal tracking angle falls within the rotatable range on the basis of the actual angle; 16BL-5654 Controlling the photovoltaic tracking bracket to rotate to a critical angle 1f the rH optimal tracking angle does not fall within the rotatable range on the basis of the actual angle.
- 9. A photovoltaic tracking bracket control system, which is characterized in that, it comprises: a division module, a determining module, an adjusting module and a calibration module; Wherein, the division module is used for dividing a photovoltaic power plant into a plurality of sub-areas, according to geographical information data; The determining module is used for determining the optimal tracking angle of the photovoltaic tracking bracket in each sub-area; An adjusting module for controlling the photovoltaic tracking brackets in each sub-area to be adjusted according to the corresponding optimal tracking angle; A calibration module for determining the operating accuracy of the photovoltaic tracking bracket according to the irradiance at a preset time interval, and calibrating continuously the optimal tracking angle-adjusted photovoltaic tracking bracket to make its actual angle become the optimal tracking angle.
- 10. A photovoltaic tracking bracket control system according to claim 9, which is characterized in that, each photovoltaic tracking bracket is installed with a photovoltaic module connected to an inverter. 17
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| CN202310195506.1A CN116048137A (en) | 2023-03-03 | 2023-03-03 | Control method and system of photovoltaic tracking bracket |
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| WO2022105446A1 (en) * | 2020-11-23 | 2022-05-27 | 深圳市中旭新能源有限公司 | Single-axis angle tracking method and system for intelligent photovoltaic module |
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| CN107302340A (en) | 2017-06-08 | 2017-10-27 | 何春涛 | A kind of shaft flexible photovoltaic tracking support |
| WO2022105446A1 (en) * | 2020-11-23 | 2022-05-27 | 深圳市中旭新能源有限公司 | Single-axis angle tracking method and system for intelligent photovoltaic module |
| CN114389531A (en) * | 2022-03-17 | 2022-04-22 | 福建万芯科技有限公司 | Novel diversified wisdom photovoltaic power generation system of modularization |
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| CN116048137A (en) | 2023-05-02 |
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