CN111309057A - Sensing device for automatically measuring optimal tracking angle - Google Patents
Sensing device for automatically measuring optimal tracking angle Download PDFInfo
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- CN111309057A CN111309057A CN202010223373.0A CN202010223373A CN111309057A CN 111309057 A CN111309057 A CN 111309057A CN 202010223373 A CN202010223373 A CN 202010223373A CN 111309057 A CN111309057 A CN 111309057A
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- 238000010248 power generation Methods 0.000 claims abstract description 104
- 238000005286 illumination Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000004364 calculation method Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000012806 monitoring device Methods 0.000 description 1
- 238000012876 topography 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
- 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 a sensing device for automatically measuring an optimal tracking angle, which comprises an arc support, a plurality of photovoltaic power generation plates arranged on the outer surface of the arc support at intervals along the circumferential direction, and a controller electrically connected with the photovoltaic power generation plates, wherein the controller calculates the voltage and the current fed back by each photovoltaic power generation plate according to illumination, finds out the photovoltaic power generation plate with the maximum power generation power, sends preset inclination angle information corresponding to the photovoltaic power generation plates to a control system of the photovoltaic tracker, and controls each solar array group to operate to the optimal tracking angle according to the inclination angle information without a driving mechanism, so that the inclination angle information with the maximum power generation power efficiency can be obtained without a driving mechanism, the manufacturing cost and the use cost of equipment are saved, the equipment is not influenced by mechanical errors and calculation and measurement errors, the equipment precision is higher, and the operation stability is good.
Description
The invention relates to the field of photovoltaic trackers, in particular to a sensing device for automatically measuring an optimal tracking angle.
Background
At present, a photovoltaic tracker generally adopts an astronomical algorithm, calculates an altitude angle and an azimuth angle according to local longitude and latitude and time positioned by a GPS, calculates a current optimal tracking angle according to the altitude angle and the azimuth angle, and drives the whole photovoltaic square matrix group to turn to the optimal angle by driving an actuating mechanism; the tracking precision of the method is easily influenced by the setting of the local time and the latitude and longitude, and particularly, if a GPS sensor for acquiring the latitude and longitude and the local time has a problem, the tracking precision is influenced.
And a driving device is directly connected to a rotating mechanism by a photovoltaic tracking device, so that the rotating mechanism is driven to rotate to track the incident angle of the solar ray.
Disclosure of Invention
The invention aims to provide a novel monitoring device for an optimal tracking angle, which can be used for calculating an altitude angle and an azimuth angle to obtain the current optimal tracking angle without local longitude and latitude and time and without a specific rotor driving device to track the incident angle of solar rays.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides an automatic survey sensing device of optimum tracking angle, includes the circular arc support, a plurality of photovoltaic power generation boards that the circular arc support surface was arranged along circumference interval, the controller of being connected with the photovoltaic power generation board electricity, the controller finds out the photovoltaic power generation board that generated power is the biggest through voltage, the current value that every photovoltaic power generation board feedbacks according to illumination, will the inclination information of predetermineeing that photovoltaic power generation board corresponds sends to photovoltaic tracker's control system, and control system controls every solar energy square matrix crowd again and refers to above-mentioned inclination information and moves to the optimum tracking angle.
Preferably, the interval central angle of the photovoltaic power generation panel circumferentially distributed on the support is 0.5-2 degrees, the interval central angle circumferentially distributed on the support between each photovoltaic power generation panel represents the tracking precision of the photovoltaic tracker, and the precision can be set by adjusting the number of the photovoltaic power generation panels on the support, so that the angle of the interval central angle corresponding to each photovoltaic power generation panel is changed, the precision is adjusted according to actual needs, and various different precision requirements are conveniently customized.
Preferably, the support comprises a plurality of parallel circular arc supports, a plurality of photovoltaic power generation boards are arranged on the outer surface of each circular arc support along the circumferential direction, and the photovoltaic power generation boards on adjacent circular ring supports are arranged in a manner of offsetting along the circumferential direction. The diameter of the arc support is reduced, the external force damage resistance is improved, and the reduced diameter of the equipment can save materials; the single photovoltaic power generation plate with the same diameter can be lengthened in circumferential direction, so that the single area of the single photovoltaic power generation plate is increased, and the illumination power measured on the single photovoltaic power generation plate is more accurate; the photovoltaic power generation boards are arranged in a mode of offsetting in the same circumferential direction, a certain circle center angle difference is formed between the adjacent photovoltaic power generation boards, so that the problem that the back rake precision of the single photovoltaic power generation boards becomes low when the lengths of the single photovoltaic power generation boards in the circumferential direction are lengthened is solved, and under the condition that the lengths of the single photovoltaic power generation boards in the circumferential direction are unchanged, a plurality of parallel arc supports and the photovoltaic power generation boards are arranged in a mode of offsetting in the same circumferential direction, and the precision of improving the inclination angle is facilitated.
Preferably, the central angle of the photovoltaic power generation panel on the adjacent parallel arc supports offset in the same direction along the circumferential direction is 0.5-2 degrees; the size of the central angle can be adjusted according to the precision of actual needs, and various different precision requirements can be conveniently customized.
Preferably, the circular arc support is a circular ring or a semicircular ring. According to the irradiation characteristics of sunlight, the structure of the circular ring is most beneficial to uniformly arranging the photovoltaic power generation plates along the circumferential direction, so that each photovoltaic power generation plate can be consistent in size, the production is facilitated, and the production cost is reduced; meanwhile, the structure of the circular ring is more favorable for finding out the photovoltaic power generation panel with the maximum power generation power, so that the photovoltaic tracking effect is better.
Preferably, the angle of the upper half ring of the ring occupied by the photovoltaic power generation plates uniformly arranged along the circumferential direction on the ring support is 180 degrees; according to the irradiation characteristics of sunlight, the photovoltaic power generation plate on the circular ring structure only achieves the maximum 180 degrees, the requirement of photovoltaic tracking is completely met, the using amount of the photovoltaic power generation plate is saved, and the cost is saved.
Preferably, the controller performs a power generation efficiency operation, such as an MPPT operation or other intelligent algorithms, on each photovoltaic panel according to the voltage and current fed back by the illumination, and finds the photovoltaic panel with the maximum power generation power.
Preferably, the controller sends the optimal inclination information to the photovoltaic tracker through protocols such as wired communication RS485, RS422, Ethernet or wireless communication Zigbee, Lora, NB-IOT, WiFi, 802.11 and the like, and controls the square matrix group to track by referring to the inclination information.
According to the invention, the plurality of photovoltaic power generation plates are arranged on the outer surface of the arc support at intervals along the circumferential direction, the controller is used for detecting the power generation efficiency data of the photovoltaic power generation plates at each angle, the data is automatically compared, the preset inclination angle of the photovoltaic power generation plate with the optimal power generation efficiency is sent to the control system of the photovoltaic tracker, the control system controls each square matrix to operate to the optimal tracking angle, and the inclination angle information of the maximum power generation efficiency can be obtained without a driving mechanism, so that the manufacturing cost and the use cost of equipment are saved, the equipment is free from the influence of mechanical errors and calculation and measurement errors, the equipment precision is higher, and the operation stability is good.
Drawings
FIG. 1 is a schematic diagram of a single-column sensing device according to the present invention;
FIG. 2 is a schematic diagram of a plurality of side-by-side sensing devices according to the present invention;
FIG. 3 is a schematic structural diagram of a single-row sensing device of the present invention in which the photovoltaic panel occupies an upper 180 ° portion of the circular ring structure; FIG. 4 is a schematic view of a photovoltaic panel of a ring structure with a plurality of parallel sensing devices of the present invention occupying 180 degrees of the top;
FIG. 5 is a schematic structural diagram of the photovoltaic power generation panels on adjacent arc supports of the invention arranged in a circumferentially offset manner in the same direction;
fig. 6 is a flow chart of the system in practical use of the present invention.
In the attached drawings, a support 1, a photovoltaic power generation panel 2, a controller 3, a base 4 and a cable 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes the practice of the present invention in further detail with reference to the accompanying drawings:
as shown in fig. 1, a sensing device for automatically determining an optimal tracking angle comprises an arc support 1, wherein the arc support 1 is installed on a base 4, a plurality of photovoltaic power generation panels 2 are circumferentially arranged on the outer surface of the arc support 1 at intervals, and a controller 3 is electrically connected with the photovoltaic power generation panels 2, the controller 3 is connected with each photovoltaic power generation panel 2 through a cable 5, as shown in fig. 6, the controller 3 finds out the photovoltaic power generation panel 2 with the maximum power generation power through the voltage and current values fed back by each photovoltaic power generation panel 2 according to illumination, sends preset inclination angle information corresponding to the photovoltaic power generation panel 2 to a control system of a photovoltaic tracker, and the control system controls each solar array group to operate to the optimal tracking angle according to the inclination angle information; the sensing device is installed and arranged in the north-south direction according to the irradiation characteristics of sunlight, so that the sunlight is more accurately tracked, the outer surface of the arc support 1 is provided with the plurality of photovoltaic power generation plates 2 which are circumferentially arranged at intervals, corresponding inclination angle information is preset firstly during installation, so that after the photovoltaic power generation plate 2 with the maximum power generation efficiency is found, the preset inclination angle information is sent to a control system of a photovoltaic tracker, a solar array group is driven to rotate to the optimal power generation angle, the application can obtain the inclination angle information of the maximum power generation efficiency without a driving mechanism, the manufacturing cost and the use cost of equipment are saved, the equipment is not influenced by mechanical errors and measurement calculation errors, the equipment precision is higher, and the running stability is good.
The interval central angles of the photovoltaic power generation panels 2 distributed on the support 1 in the circumferential direction are 0.5-2 degrees, the interval central angles distributed on the support 1 in the circumferential direction among the photovoltaic power generation panels 2 represent the tracking accuracy of the photovoltaic tracker, the accuracy can be set by adjusting the number of the photovoltaic power generation panels 2 on the support, so that the angle of the interval central angle corresponding to each photovoltaic power generation panel 2 is changed, if the tracking accuracy is required to be determined to be 0.5 degrees, 720 corresponding photovoltaic power generation panels are distributed on the support in the circumferential direction, each central angle is 0.5 degrees, if the tracking accuracy is required to be determined to be 2 degrees, 180 corresponding photovoltaic power generation panels are distributed on the support in the circumferential direction, each central angle is 2 degrees, the accuracy can be adjusted according to actual requirements, and customization can be facilitated for different accuracy requirements; according to the technical requirements of photovoltaic power station sun tracking systems of national standards GB29320-2012, the tracking precision requirement of the flat single-axis tracking system is +/-5 degrees, the tracking precision of the line focusing tracking system is +/-1 degree, the tracking precision of the flat double-axis tracking system is +/-2 degrees, and the tracking precision of the point focusing tracking system is +/-0.5 degree, so that the tracking precision of the system completely meets the requirements of the precision.
As shown in fig. 2, the support 1 is composed of a plurality of parallel circular arc supports 1, the parallel circular arc supports 1 are concentric and have the same diameter, a plurality of photovoltaic panels 2 are circumferentially arranged on the outer surface of each circular arc support 1, the photovoltaic panels 2 are correspondingly arranged according to a preset inclination angle value, in order to enable each photovoltaic panel 2 on each parallel circular arc support 1 to preset a unique inclination angle, the photovoltaic panels 2 on adjacent circular arc supports 1 are required to be circumferentially arranged in an offset manner in the same direction, as shown in fig. 5, a white square frame represents one photovoltaic panel 2, the photovoltaic panels 2 on adjacent supports 1 from left to right are sequentially upwardly offset by a certain angle, and certainly, the photovoltaic panels 2 on adjacent supports 1 can also be sequentially downwardly offset by a certain angle, fig. 5 only represents an offset manner, and the offset angle is set according to the requirement of precision. The diameter of the arc support 1 can be reduced under the condition that the size of the photovoltaic power generation panel 2 is not changed by combining a plurality of parallel arc supports 1, for example: when a single arc support 1 is used, 180 photovoltaic power generation panels 2 are needed, the inclination angle of each photovoltaic power generation panel 2 is 1 degree, information of an angle of 180 degrees can be represented, if 3 rows of arc supports 1 are adopted, the number of corresponding photovoltaic panels can be reduced to 60 in the single row of arc supports 1, the diameter of the arc supports 1 is reduced under the condition that the accuracy is not changed, the external force damage resistance is improved, the diameter of equipment is reduced, and meanwhile, the required space and the corresponding manufacturing cost can be reduced; when the single photovoltaic power generation plate 2 of the arc support 1 with the same diameter can be lengthened in circumferential direction, the single area of the single photovoltaic power generation plate 2 is increased, and therefore the illumination power measured on the single photovoltaic power generation plate 2 is more accurate; the photovoltaic power generation plates 2 are arranged in a mode of offsetting in the same circumferential direction, in order to enable a certain circle center angle difference to be formed between the adjacent photovoltaic power generation plates 2, the problem that the caster angle precision of the single photovoltaic power generation plate 2 becomes lower when the length of the single photovoltaic power generation plate in the circumferential direction is lengthened is solved, and under the condition that the length of the single photovoltaic power generation plate 2 in the circumferential direction is not changed, a plurality of parallel arc supports 1 and the photovoltaic power generation plates 2 are arranged in a mode of offsetting in the same circumferential direction, and the precision of the inclination angle.
The central angle of the photovoltaic power generation panel 2 which is offset in the same direction along the circumferential direction on the adjacent parallel arc supports 1 is 0.5-2 degrees; the size of the central angle can be adjusted according to the precision of actual needs, and various different precision requirements can be conveniently customized.
As shown in fig. 1 and 2, the circular arc support 1 has a circular ring structure, and may have a semicircular ring or partial circular ring structure. According to the irradiation characteristics of sunlight, the structure of the circular ring is most beneficial to uniformly arranging the photovoltaic power generation plates 2 along the circumferential direction, so that each photovoltaic power generation plate 2 can be consistent in size, the production is facilitated, and the production cost is reduced; simultaneously a plurality of photovoltaic power generation boards 2 that the surface of the 1 surface of structural support of ring evenly arranged along circumference interval for the inclination angle information of every photovoltaic power generation board 2 is accomplished accurately more easily, is favorable to fixing a position the biggest photovoltaic power generation board 2 of generated power, makes the photovoltaic tracking precision uprise.
As shown in fig. 3 and 4, the angle of the upper half ring of the ring occupied by the photovoltaic power generation panels 2 uniformly arranged along the circumferential direction on the ring support 1 is 180 °; according to the irradiation characteristics of sunlight, the photovoltaic power generation panel 2 on the circular ring structure only needs to achieve the maximum 180 degrees, the requirement of photovoltaic tracking is completely met, the using amount of the photovoltaic power generation panel 2 is saved, and the overall cost of equipment is saved.
The controller 3 performs MPPT operation through the voltage and current fed back by each photovoltaic power generation panel 2 according to illumination, and finds out the photovoltaic power generation panel 2 with the maximum power generation power; the MPPT operation is mainly completed through an MPPT controller in a controller.
The controller 3 sends the optimal inclination angle information to the photovoltaic tracker through protocols such as wired communication RS485, RS422, Ethernet or wireless communication Zigbee, Lora, NB-IOT, WiFi, 802.11 and the like, and controls the square matrix group to track according to the inclination angle information. The controller system of controller and photovoltaic tracker can be through wired or wireless mode communication connection, because of need not the equipment of this kind of big electric quantity demand of actuating mechanism, relies on wireless data transmission and self photovoltaic power generation board to the power supply of low-power consumption controller, and the topography of selecting the illumination advantage that sensing device can be nimble sets up to improve photovoltaic tracking effect.
Claims (8)
1. A sensing device for automatically determining an optimal tracking angle, comprising: the photovoltaic power generation device comprises an arc support, a plurality of photovoltaic power generation plates and a controller, wherein the photovoltaic power generation plates are arranged on the outer surface of the arc support at intervals along the circumferential direction; the controller confirms the photovoltaic power generation panel with the maximum power generation power through the voltage and current values fed back by each photovoltaic power generation panel according to illumination, sends the preset inclination angle information corresponding to the photovoltaic power generation panel to the control system of the photovoltaic tracker, and the control system adjusts and runs each solar array group to the optimal tracking angle according to the inclination angle information.
2. A sensing apparatus for automatically determining an optimum tracking angle according to claim 1, wherein: the interval central angle that photovoltaic power generation board circumference distributes on the support is 0.5 ~ 2.
3. A sensing apparatus for automatically determining an optimum tracking angle according to claim 1, wherein: the support comprises a plurality of arc supports side by side, and a plurality of photovoltaic power generation boards that every arc support surface was arranged along circumference, and the same direction skew setting of photovoltaic power generation board along circumference on the adjacent arc support.
4. A sensing apparatus for automatically determining an optimum tracking angle according to claim 3, wherein: the central angle of the photovoltaic power generation panel on the adjacent parallel arc supports along the same offset direction of the circumferential direction is 0.5-2 degrees.
5. A sensing device for automatically determining an optimum tracking angle according to any one of claims 1 to 4, wherein: the arc support is a circular ring support or a semicircular ring support, and the outer surface of the support is uniformly provided with a plurality of photovoltaic power generation boards at intervals along the circumferential direction.
6. A sensing apparatus for automatically determining an optimum tracking angle according to claim 5, wherein: the angle of the upper half circular ring of the circular ring occupied by the photovoltaic power generation plates uniformly arranged on the circular ring support along the circumferential direction is 180 degrees.
7. A sensing apparatus for automatically determining an optimum tracking angle according to any one of claims 1 to 4 and 6, wherein: the controller carries out MPPT operation through voltage and current fed back by each photovoltaic power generation panel according to illumination, and finds out the photovoltaic power generation panel with the maximum power generation power.
8. A sensing apparatus for automatically determining an optimum tracking angle according to claim 7, wherein: the controller sends the inclination angle information to the photovoltaic tracker through wired communication RS485, RS422, Ethernet or wireless communication Zigbee, Lora, NB-IOT, WiFi and 802.11 protocols and controls the square matrix group to track according to the inclination angle information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010223373.0A CN111309057A (en) | 2020-03-26 | 2020-03-26 | Sensing device for automatically measuring optimal tracking angle |
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| CN202010223373.0A CN111309057A (en) | 2020-03-26 | 2020-03-26 | Sensing device for automatically measuring optimal tracking angle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359869A (en) * | 2021-06-24 | 2021-09-07 | 江苏中信博新能源科技股份有限公司 | Photovoltaic support angle control and feedback method and system |
| CN113778139A (en) * | 2021-09-14 | 2021-12-10 | 阳光新能源开发有限公司 | Angle tracker, angle tracking method and photovoltaic tracking system |
| CN117055627A (en) * | 2023-10-11 | 2023-11-14 | 北京东润环能科技股份有限公司 | Photovoltaic power station power generation control method, device, equipment and storage medium |
-
2020
- 2020-03-26 CN CN202010223373.0A patent/CN111309057A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359869A (en) * | 2021-06-24 | 2021-09-07 | 江苏中信博新能源科技股份有限公司 | Photovoltaic support angle control and feedback method and system |
| CN113778139A (en) * | 2021-09-14 | 2021-12-10 | 阳光新能源开发有限公司 | Angle tracker, angle tracking method and photovoltaic tracking system |
| CN117055627A (en) * | 2023-10-11 | 2023-11-14 | 北京东润环能科技股份有限公司 | Photovoltaic power station power generation control method, device, equipment and storage medium |
| CN117055627B (en) * | 2023-10-11 | 2023-12-26 | 北京东润环能科技股份有限公司 | Photovoltaic power station power generation control method, device, equipment and storage medium |
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