CN111796608A - Automatic tracking type solar photovoltaic power generation system - Google Patents
Automatic tracking type solar photovoltaic power generation system Download PDFInfo
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- CN111796608A CN111796608A CN202010774858.9A CN202010774858A CN111796608A CN 111796608 A CN111796608 A CN 111796608A CN 202010774858 A CN202010774858 A CN 202010774858A CN 111796608 A CN111796608 A CN 111796608A
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- 238000012937 correction Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 4
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- 238000007726 management method Methods 0.000 abstract description 9
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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
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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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 invention relates to an automatic tracking type solar photovoltaic power generation system which comprises a track judgment subsystem, a driving tracking subsystem and a shielding management subsystem, wherein the track judgment subsystem is used for judging the track of a solar photovoltaic power generation system; the track judgment subsystem comprises a local track processing module, a local track database, an actual measurement track analysis module, an actual measurement sensor group and a track correction module; the local track processing module is connected to the local track database, a plurality of local tracks are stored in the local track database, each local track takes environmental condition information as an index, the environmental condition information comprises season data and weather data, the season data reflects date, the weather data reflects weather, the local track processing module is configured with a local model, the local track processing module acquires external environmental condition information, firstly, the solar track is continuously corrected in the data model through local and actual measurement differences, and therefore the safety of corresponding equipment needing power failure is judged, and the service life of the solar cell panel is prolonged.
Description
Technical Field
The invention relates to a solar power generation system, in particular to an automatic tracking type solar photovoltaic power generation system.
Background
The solar power generation system consists of a solar battery pack, a solar controller and a storage battery (pack). If the output power of the solar power generation system is 220V or 110V alternating current, an inverter is required to be configured. The distributed power generation system, also called distributed power generation or distributed energy supply, is configured with a smaller photovoltaic power generation and supply system at or near a user site to meet the requirements of specific users, support the economic operation of the existing power distribution network, or meet the requirements of the two aspects at the same time. The basic equipment of the distributed photovoltaic power generation system comprises equipment such as a photovoltaic cell assembly, a photovoltaic square matrix support, a direct current header box, a direct current power distribution cabinet, a grid-connected inverter, an alternating current power distribution cabinet and the like, and further comprises a power supply system monitoring device and an environment monitoring device. The operation mode is that under the condition of solar radiation, the solar cell module array of the photovoltaic power generation system converts solar energy into electric energy which is output, the electric energy is intensively sent into a direct current power distribution cabinet through a direct current header box, a grid-connected inverter inverts the electric energy into alternating current which is supplied to the load of the building, and redundant or insufficient electric power is adjusted by being connected with a power grid. Solar tracking system is in light and heat and photovoltaic power generation process, and the optimization sunlight is used, reaches mechanical and the automatically controlled unit system that improves photoelectric conversion efficiency, includes: motors (dc, stepper, servo, planetary gear motor, push rod motor, etc.), worm gears, sensor systems, etc.
The position of the corresponding sun is generally detected through an illumination sensor by the current solar tracking system, so that the direction of a photovoltaic panel is adjusted, and the dynamic following mode has a problem, because each solar photovoltaic panel works independently, if the solar photovoltaic panel irradiates the position which cannot be covered, even if the solar photovoltaic panel continuously detects and rotates, the solar photovoltaic panel cannot be electrified, once the situation occurs, the energy consumption is wasted, the solar photovoltaic panel which cannot be charged is merged into a power grid, the service life of the photovoltaic panel is shortened, and the service life of the power grid is influenced.
Disclosure of Invention
In view of the above, the present invention provides an automatic tracking solar photovoltaic power generation system.
In order to solve the technical problems, the technical scheme of the invention is as follows: an automatic tracking type solar photovoltaic power generation system comprises a track judgment subsystem, a driving tracking subsystem and a shielding management subsystem;
the track judgment subsystem comprises a local track processing module, a local track database, an actual measurement track analysis module, an actual measurement sensor group and a track correction module; the local track processing module is connected to the local track database, the local track database stores a plurality of local tracks, each local track takes environmental condition information as an index, the environmental condition information comprises season data and weather data, the season data reflects a date, the weather data reflects weather, the local track processing module is configured with a local model, the local track processing module acquires external environmental condition information and calls the local track in the local track database as a reference track according to the environmental condition information, and the reference track reflects the position of the sun in the local model at each moment; the system comprises an actual measurement track analysis module, a plurality of sensors and a control module, wherein the actual measurement track analysis module is connected with an actual measurement sensor group, the actual measurement sensor group comprises a plurality of sensor units, the sensor units are used for judging the irradiation direction of sunlight, and the actual measurement track analysis module generates an actual measurement position according to the irradiation direction; the track correction module corrects the local track according to the measured position to generate a new local track;
the driving tracking subsystem comprises a driving distribution module and a driving execution group, the driving execution group comprises a plurality of driving units, each driving unit drives the corresponding solar photovoltaic panel to move, the driving distribution module is configured with a first interval time, the driving distribution module is configured with a prediction distribution strategy, and the prediction distribution strategy comprises a first positioning step, a first relative step and a driving output step; the first positioning step comprises the steps of obtaining coordinates of the reference track after a first interval time to generate a first pre-judging position, the first relative step comprises the steps of generating a plurality of first relative positions from the local model according to the first pre-judging positions, the first relative positions respectively reflect the position relation between each driving unit and the solar photovoltaic panel, and the driving output step comprises the steps of generating corresponding first driving instructions according to the first relative positions and respectively controlling the corresponding driving units to act through the first driving instructions;
the shielding management subsystem comprises a shielding distribution module and a shielding switch group, the shielding switch group comprises a plurality of switch units, each switch unit is respectively arranged between a charging circuit and a power supply networking of the solar photovoltaic panel, the shielding distribution unit is configured with a second interval time, the shielding distribution unit is configured with a shielding distribution strategy, the shielding distribution strategy comprises a second positioning step, a second relative step and a shielding execution step, the second positioning step comprises the step of obtaining coordinates of a reference track after a second preset time to generate a second pre-judgment position, the second relative step comprises the step of obtaining an allowed position range corresponding to each solar photovoltaic panel from the local model, the allowed position range reflects the maximum range of sunlight which can be received by the solar photovoltaic panel, the shielding execution step comprises the step of screening the solar photovoltaic panels of which the allowed position ranges are not matched with the second pre-judgment positions to form corresponding first shielding instructions, and the corresponding switch units are controlled to be switched off respectively through the first shielding instruction.
Further: actual measurement sensor group includes a plurality of unmanned aerial vehicle, the sensor unit set up in on the unmanned aerial vehicle, actual measurement orbit analysis module is still including generating guide instruction, guide instruction is used for control the unmanned aerial vehicle action is in order to acquire the sun position.
Further: the sensor unit is arranged on the solar photovoltaic panel, the actually-measured track analysis module further comprises a guiding instruction, and the guiding instruction is used for controlling the driving unit to act so as to obtain the position of the sun.
Further: and after the track correction module finishes the correction of the local track, the new local track is stored in the corresponding local track database.
Further: the actual measurement track analysis module determines an irradiation area and an irradiation direction according to the position of the sun in the local track, acquires corresponding actual measurement irradiation direction information through the sensor unit, associates the irradiation direction information at the same moment to generate a first actual measurement position, and generates the guide instruction according to the first actual measurement position.
Further: generating a maximum coverage driving coverage area according to the first measured position, and acquiring edge coordinates of the maximum coverage area, wherein the guiding instruction comprises driving the unmanned aerial vehicle to move to the edge coordinates.
Further: the weather data is obtained from an external database.
Further: the weather data includes overcast and rainy days, cloudy days and sunny days.
Further: the photovoltaic panel information database records photovoltaic panel parameter information of each photovoltaic panel, the photovoltaic panel parameter information comprises position information and an allowable position range, and the photovoltaic panel information database is connected with the driving tracking subsystem and the shielding management subsystem.
Further: the photovoltaic panel parameter information further comprises photovoltaic panel working efficiency information and conversion rate information.
The technical effects of the invention are mainly reflected in the following aspects: through the setting, the solar track is continuously corrected in the data model through the difference between the local and the actual measurement, so that the safety of the corresponding equipment needing to be powered off is judged, and the service life of the solar cell panel is ensured.
Drawings
FIG. 1: the invention discloses a schematic diagram of a system architecture;
FIG. 2: the invention discloses a solar photovoltaic panel control schematic diagram.
Reference numerals: 100. a track judgment subsystem; 110. a local trajectory processing module; 120. a local track database; 130. an actual measurement track analysis module; 140. measuring a sensor group actually; 150. a trajectory correction module; 200. a drive tracking subsystem; 210. a drive distribution module; 220. a drive execution group; 300. a shield management subsystem; 310. a shield distribution module; 320. a shielding switch group; 1. a solar photovoltaic panel; 2. a sensing unit; 3. a drive unit.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.
An automatic tracking type solar photovoltaic power generation system comprises a track judgment subsystem 100, a driving tracking subsystem 200 and a shielding management subsystem 300;
the trajectory determination subsystem 100 includes a local trajectory processing module 110, a local trajectory database 120, an actual measurement trajectory analysis module 130, an actual measurement sensor group 140, and a trajectory correction module 150; the local track processing module 110 is connected to the local track database 120, the local track database 120 stores a plurality of local tracks, each local track takes environmental condition information as an index, the environmental condition information includes season data and weather data, the season data reflects a date, the weather data reflects weather, the local track processing module 110 is configured with a local model, the local track processing module 110 obtains external environmental condition information, and calls the local track in the local track database 120 as a reference track according to the environmental condition information, and the reference track reflects the position of the sun in the local model at each moment; the measured trajectory analysis module 130 is connected to the measured sensor group 140, the measured sensor group 140 includes a plurality of sensor units, the sensor units are used for determining an irradiation direction of sunlight, and the measured trajectory analysis module 130 generates a measured position according to the irradiation direction; the trajectory modification module 150 modifies the local trajectory according to the measured position to generate a new local trajectory; first, a description is given to a local trajectory determination subsystem 100, where existing solar trajectory tracking is driven by independent analysis, each solar module is not related, and data cannot be communicated, so that current live-action tracking, that is, determining an azimuth and actually adjusting an angle on the premise of sunlight irradiation, cannot determine an actual situation, and therefore each solar module cannot be integrally adjusted independently, but one technical core of the present invention is that a corresponding database is configured through a local trajectory processing module 110, a local trajectory is modeled according to environmental information, and a trajectory of the solar operation on the current date relative to a region model can be obtained by combining with past data, but the trajectory is not very accurate, and may be influenced by conditions such as weather, so that the operation trajectory of the sun cannot be accurately positioned, therefore, the reference track of the sun is firstly taken, then the actual sun position is judged through the actual measurement track analysis module 130, and the irradiation direction judgment realized through the sensors at a plurality of different positions can avoid errors to the greatest extent, so that the actual measurement position of the sun is ensured to be accurate in positioning. After the trajectory modification module 150 completes the modification of the local trajectory, the new local trajectory is stored in the corresponding local trajectory database 120. Therefore, the local data can be continuously improved, the reliability of the data is improved, and the local data can be used as a correction reference, so that the stored local track can be ensured to continuously approach the system track. The weather data is obtained from an external database. The weather data includes overcast and rainy days, cloudy days and sunny days. The photovoltaic panel information management system further comprises a photovoltaic panel information database, wherein the photovoltaic panel information database records photovoltaic panel parameter information of each photovoltaic panel, the photovoltaic panel parameter information comprises position information and an allowable position range, and the photovoltaic panel information database is connected to the driving tracking subsystem 200 and the shielding management subsystem 300. The photovoltaic panel parameter information further comprises photovoltaic panel working efficiency information and conversion rate information.
The driving and tracking subsystem 200 includes a driving and distributing module 210 and a driving and executing group 220, the driving and executing group 220 includes a plurality of driving units 3, the driving units 3 may be rotation devices for driving the solar photovoltaic panel 1, or linear displacement devices for driving the solar photovoltaic panel 1, without limitation, each driving unit 3 drives the corresponding solar photovoltaic panel 1 to move, the driving and distributing module 210 is configured with a first interval time, the driving and distributing module 210 is configured with a prediction and distribution strategy, and the prediction and distribution strategy includes a first positioning step, a first relative step and a driving and outputting step; the first positioning step comprises the steps of obtaining coordinates of the reference track after a first interval time to generate a first pre-judging position, the first relative step comprises the steps of generating a plurality of first relative positions from the local model according to the first pre-judging positions, the first relative positions respectively reflect the position relation between each driving unit 3 and the solar photovoltaic panel 1, the driving output step comprises the steps of generating corresponding first driving instructions according to the first relative positions and respectively controlling the corresponding driving units 3 to act through the first driving instructions; the tracking subsystem drives different driving execution units to drive corresponding solar photovoltaic panels 1 to move based on the same local track so as to play a light following effect, and the difference lies in that the light following effect is judged in real time according to the illumination direction, the tracking subsystem drives corresponding driving units 3 to act after the position is judged according to the actual predicted position, the specific first interval time can be set to be 10-15 minutes, the light following effect is guaranteed, and the light following efficiency is improved. Actual measurement sensor group 140 includes a plurality of unmanned aerial vehicles, the sensor unit set up in on the unmanned aerial vehicle, actual measurement orbit analysis module 130 is still including generating guide instruction, guide instruction is used for control the unmanned aerial vehicle action is in order to acquire the sun position. The sensor unit is disposed on the solar photovoltaic panel 1, and the actually measured trajectory analysis module 130 further generates a guiding instruction, where the guiding instruction is used to control the driving unit 3 to act to obtain the position of the sun. Two kinds of embodiments more than being provided with of sensor, and set up the effect that the sensor accords with unified location at present more through unmanned aerial vehicle, if the quantity of the sensor that can significantly reduce is unified to the location, and unmanned aerial vehicle can reduce the limitation in the position, guarantees to play more reliable effect on the basis of benchmark orbit. The accuracy of the detection result is ensured to be higher. The actually measured trajectory analysis module 130 determines an irradiation area and an irradiation direction according to the position of the sun in the local trajectory, acquires corresponding actually measured irradiation direction information through the sensor unit, associates the irradiation direction information at the same time to generate a first actually measured position, and generates the guidance instruction according to the first actually measured position. Generating a maximum coverage driving coverage area according to the first measured position, and acquiring edge coordinates of the maximum coverage area, wherein the guiding instruction comprises driving the unmanned aerial vehicle to move to the edge coordinates.
The shielding management subsystem 300 comprises a shielding distribution module 310 and a shielding switch group 320, the shielding switch group 320 comprises a plurality of switch units, each switch unit is respectively arranged between the charging circuit and the power supply network of the solar photovoltaic panel 1, the shielding distribution unit is configured with a second interval time, the shielding distribution unit is configured with a shielding distribution strategy, the shielding distribution strategy comprises a second positioning step, a second relative step and a shielding execution step, the second positioning step comprises the step of obtaining the coordinates of a reference track after a second preset time to generate a second pre-judged position, the second relative step comprises the step of obtaining an allowed position range corresponding to each solar photovoltaic panel 1 from the local model, the allowed position range reflects the maximum range of the solar photovoltaic panel 1 capable of receiving sunlight, and the shielding execution step comprises the step of screening the solar photovoltaic panel 1 of which the allowed position range is not matched with the second pre-judged position to form a corresponding first solar photovoltaic panel 1 And shielding the command, and respectively controlling the corresponding switch units to be switched off through the first shielding command. The logic of the shielding is to prevent a long-time charging loop from being formed between the solar photovoltaic panel 1 and the storage battery to affect the service life of the solar photovoltaic panel 1, and in contrast, compared with the detection judgment mode, the accurate positioning judgment of the sun can realize accurate positioning judgment of the sun under the condition of the same power generation amount, the shielding time is improved by more than 10 percent, so that the maintenance cost of the whole solar photovoltaic panel 1 can be greatly reduced, and particularly, whether the corresponding solar photovoltaic panel 1 can absorb the corresponding light energy at the allowed pose is judged through the actually measured track, the solar photovoltaic panel 1 does not need to be driven to act continuously to judge, so that a plurality of idle operations can be avoided, because in most cases, the electric solar photovoltaic panel 1 needs to be moved continuously to determine the irradiation efficiency, which wastes electric energy and greatly affects the service life of the device.
The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.
Claims (7)
1. The utility model provides an automatic tracking formula solar photovoltaic power generation system which characterized in that: the system comprises a track judgment subsystem, a driving tracking subsystem and a shielding management subsystem;
the track judgment subsystem comprises a local track processing module, a local track database, an actual measurement track analysis module, an actual measurement sensor group and a track correction module; the local track processing module is connected to the local track database, the local track database stores a plurality of local tracks, each local track takes environmental condition information as an index, the environmental condition information comprises season data and weather data, the season data reflects a date, the weather data reflects weather, the local track processing module is configured with a local model, the local track processing module acquires external environmental condition information and calls the local track in the local track database as a reference track according to the environmental condition information, and the reference track reflects the position of the sun in the local model at each moment; the system comprises an actual measurement track analysis module, a plurality of sensors and a control module, wherein the actual measurement track analysis module is connected with an actual measurement sensor group, the actual measurement sensor group comprises a plurality of sensor units, the sensor units are used for judging the irradiation direction of sunlight, and the actual measurement track analysis module generates an actual measurement position according to the irradiation direction; the track correction module corrects the local track according to the measured position to generate a new local track;
the driving tracking subsystem comprises a driving distribution module and a driving execution group, the driving execution group comprises a plurality of driving units, each driving unit drives the corresponding solar photovoltaic panel to move, the driving distribution module is configured with a first interval time, the driving distribution module is configured with a prediction distribution strategy, and the prediction distribution strategy comprises a first positioning step, a first relative step and a driving output step; the first positioning step comprises the steps of obtaining coordinates of the reference track after a first interval time to generate a first pre-judging position, the first relative step comprises the steps of generating a plurality of first relative positions from the local model according to the first pre-judging positions, the first relative positions respectively reflect the position relation between each driving unit and the solar photovoltaic panel, and the driving output step comprises the steps of generating corresponding first driving instructions according to the first relative positions and respectively controlling the corresponding driving units to act through the first driving instructions;
the shielding management subsystem comprises a shielding distribution module and a shielding switch group, the shielding switch group comprises a plurality of switch units, each switch unit is respectively arranged between a charging circuit and a power supply networking of the solar photovoltaic panel, the shielding distribution unit is configured with a second interval time, the shielding distribution unit is configured with a shielding distribution strategy, the shielding distribution strategy comprises a second positioning step, a second relative step and a shielding execution step, the second positioning step comprises the step of obtaining coordinates of a reference track after a second preset time to generate a second pre-judgment position, the second relative step comprises the step of obtaining an allowed position range corresponding to each solar photovoltaic panel from the local model, the allowed position range reflects the maximum range of sunlight which can be received by the solar photovoltaic panel, the shielding execution step comprises the step of screening the solar photovoltaic panels of which the allowed position ranges are not matched with the second pre-judgment positions to form corresponding first shielding instructions, respectively controlling the corresponding switch units to be switched off through the first shielding instruction; the actual measurement sensor group comprises a plurality of unmanned aerial vehicles, the sensor units are arranged on the unmanned aerial vehicles, the actual measurement track analysis module further generates a guide instruction, and the guide instruction is used for controlling the unmanned aerial vehicles to act so as to obtain the position of the sun; the sensor unit is arranged on the solar photovoltaic panel, the actually measured track analysis module further generates a guide instruction, and the guide instruction is used for controlling the driving unit to act so as to obtain the position of the sun; and after the track correction module finishes the correction of the local track, the new local track is stored in the corresponding local track database.
2. The automatic tracking solar photovoltaic power generation system of claim 1, wherein: the actual measurement track analysis module determines an irradiation area and an irradiation direction according to the position of the sun in the local track, acquires corresponding actual measurement irradiation direction information through the sensor unit, associates the irradiation direction information at the same moment to generate a first actual measurement position, and generates the guide instruction according to the first actual measurement position.
3. The automatic tracking solar photovoltaic power generation system of claim 1, wherein: generating a maximum coverage driving coverage area according to the first measured position, and acquiring edge coordinates of the maximum coverage area, wherein the guiding instruction comprises driving the unmanned aerial vehicle to move to the edge coordinates.
4. The automatic tracking solar photovoltaic power generation system of claim 1, wherein: the weather data is obtained from an external database.
5. The automatic tracking solar photovoltaic power generation system of claim 1, wherein: the weather data includes overcast and rainy days, cloudy days and sunny days.
6. The automatic tracking solar photovoltaic power generation system of claim 1, wherein: the photovoltaic panel information database records photovoltaic panel parameter information of each photovoltaic panel, the photovoltaic panel parameter information comprises position information and an allowable position range, and the photovoltaic panel information database is connected with the driving tracking subsystem and the shielding management subsystem.
7. The automatic tracking solar photovoltaic power generation method of claim 1, wherein: the photovoltaic panel parameter information further comprises photovoltaic panel working efficiency information and conversion rate information.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116048184A (en) * | 2023-02-23 | 2023-05-02 | 山东浪潮科学研究院有限公司 | Photovoltaic power generation system, control method and device thereof, and medium |
| CN116545361A (en) * | 2023-04-12 | 2023-08-04 | 浙江川达新能源股份有限公司 | Photovoltaic support is tracked to biax |
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| CN103455049A (en) * | 2013-08-29 | 2013-12-18 | 保定科诺伟业控制设备有限公司 | Automatic photovoltaic tracking control system |
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| CN116545361A (en) * | 2023-04-12 | 2023-08-04 | 浙江川达新能源股份有限公司 | Photovoltaic support is tracked to biax |
| CN116545361B (en) * | 2023-04-12 | 2024-02-27 | 浙江川达新能源股份有限公司 | Photovoltaic support is tracked to biax |
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