CN111796609A - Automatic tracking type solar photovoltaic power generation system and method - Google Patents
Automatic tracking type solar photovoltaic power generation system and method Download PDFInfo
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Abstract
The invention provides an automatic tracking type solar photovoltaic power generation system and method. The solar photovoltaic power generation system comprises a plurality of solar photovoltaic conversion plates, a tracking control device for controlling the state change of the solar photovoltaic conversion plates and a plurality of remote terminal units in different geographical directions, wherein the remote terminal units are communicated with the tracking control device through a field edge calculation unit; after the field edge computing unit receives weather parameter information sent by a remote centralized control platform and field state sensing signal information acquired by the remote terminal units, the tracking control device generates a tracking control instruction; controlling the state change of the solar photoelectric conversion panel based on the tracking control instruction; the state change comprises angle change and height change of the solar photoelectric conversion panel. The technical scheme of the invention can acquire accurate control parameters to the maximum extent, thereby realizing accurate automatic tracking control.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power generation control, and particularly relates to an automatic tracking type solar photovoltaic power generation system and method.
Background
Solar energy is a clean renewable energy source with large radiant quantity, wide distribution and long available time. Therefore, the solar power generation technology has been studied and developed comprehensively, but the efficiency of power generation using solar energy is low and power generation is unstable due to the defects of weak solar intensity, poor continuity, instability, and the like. At present, when solar photovoltaic power generation is utilized, a plurality of solar cell panel arrays are basically fixedly arranged in one direction, and the vertical irradiation of sunlight on the solar cell panels cannot be ensured, so that solar cells cannot fully utilize solar energy resources, and the power generation efficiency is low.
A feasible approach to solving this problem is to implement automatic tracking of the sun. The automatic sun tracking is similar to a sunflower effect, and the deflection angle of the solar cell is correspondingly and automatically adjusted along with the change of the position of the sun, so that the sun is tracked. The automatic sun tracking technology can enable sunlight to vertically irradiate on the solar cell panel, and solar energy resources are better and more fully utilized. According to related researches, the flat-plate solar power generation array can improve the efficiency by 33% compared with the original fixed mode when the sun is automatically tracked.
At present, tracking equipment mainly comprises a single-axis tracking mode and a double-axis tracking mode from the aspect of execution structure, wherein the single-axis tracking mode is generally used for tracking the sun in the east-west direction, and the double-axis tracking mode is used for tracking the sun by adjusting two angles. The control mode which is used for sun tracking is a photoelectric tracking mode, a view-sun movement track tracking mode and the combination of the two modes.
Photoelectric tracking is mainly performed by using a photosensitive sensor, such as a photodiode, for detecting the moving direction of the sun. Firstly, a photosensitive sensor is fixed on a sun tracking device according to a certain mode, when the position of the sun changes, the photosensitive sensor generates a deviation current, a photoelectric detection circuit amplifies and shapes the deviation current to output a deviation signal to a controller, and the controller receives the deviation signal and drives a motor to rotate, so that incident light of the sun vertically irradiates on a light receiving surface of the tracking device.
The sun-viewing movement track is tracked, the sunrise and sunset time of the local sun and the azimuth parameters of the sun of the tracking device are calculated according to a formula related to the sun celestial body operation rule in astronomy, and then the rotation of a motor is controlled through computer programming, so that the offset angle of the tracking device is changed.
The system and the method for tracking the solar azimuth of the photovoltaic power generation based on the hill-climbing algorithm, which are provided by the Chinese invention patent application with the application number of CN201910651187, utilize energy data collected by a light intensity sensor, and then analyze the data through the hill-climbing algorithm to accurately obtain a two-dimensional solar azimuth angle and an altitude angle of a solar motion track tracking mode. The hill climbing algorithm is added to accurately track the sun azimuth angle and the sun altitude angle in the sun movement track tracking mode, so that the accumulated error of the sun movement track tracking mode can be better eliminated, and the sun azimuth tracking precision is improved. Meanwhile, the whole automatic sun direction tracking device is divided into two working modes by using the light intensity sensor, so that the influence of weather change on the sun direction tracking stability can be well solved. Meanwhile, a relatively complex photoelectric tracking mode and a solar motion trail tracking mode are switched and are multiplexed, so that the system is more convenient and practical, and the loss of electric energy is saved to a certain extent.
The Chinese invention patent with the application number of CN200910111178 discloses an automatic tracking linkage mechanism of a solar concentrating photovoltaic power generation array, which comprises a solar concentrator array, an altitude angle linkage mechanism and an azimuth angle linkage mechanism; the solar concentrating photovoltaic power generation array drives all the concentrators of the whole array to obliquely track the solar altitude angle through a set of altitude angle driving mechanism, and drives all the concentrators of the whole array to rotate around a transmission shaft of the concentrators to track the solar azimuth angle through a set of azimuth angle driving mechanism. Because the whole solar concentrating photovoltaic power generation array only adopts one set of solar elevation angle driving mechanism and one set of solar azimuth angle driving mechanism, the two-dimensional linkage sun tracking operation of all the concentrators of the whole array can be realized, and the tracking cost is low. And because the solar altitude angle driving mechanism and the solar azimuth angle driving mechanism are completely formed by simple mechanical mechanisms, the solar azimuth angle driving mechanism is easy to manufacture, high in tracking precision and strong in strong wind resistance.
However, in one aspect, the apparent solar motion trajectory is timed, and light control is a closed-loop control system, which is an open-loop control system. The closed-loop tracking system can accurately track the sun, and the open-loop tracking system usually causes error accumulation in the tracking process; on the other hand, whether the control is light-operated or time-controlled, the control model or the control strategy can be enabled to be effective only by acquiring accurate relevant parameter data, and if the data acquired by the relevant parameter sensors on site is not accurate enough, the obtained control strategy cannot realize effective tracking control, and the power generation efficiency is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides an automatic tracking type solar photovoltaic power generation system and method. The solar photovoltaic power generation system comprises a plurality of solar photovoltaic conversion plates, a tracking control device for controlling the state change of the solar photovoltaic conversion plates and a plurality of remote terminal units in different geographical directions, wherein the remote terminal units are communicated with the tracking control device through a field edge calculation unit; after the field edge computing unit receives weather parameter information sent by a remote centralized control platform and field state sensing signal information acquired by the remote terminal units, the tracking control device generates a tracking control instruction; controlling the state change of the solar photoelectric conversion panel based on the tracking control instruction; the state change comprises angle change and height change of the solar photoelectric conversion panel. The technical scheme of the invention can acquire accurate control parameters to the maximum extent, thereby realizing accurate automatic tracking control.
In a first aspect of the present invention, an automatic tracking solar photovoltaic power generation system is provided, the system comprising a solar photovoltaic conversion panel and a tracking control device in communication with the solar photovoltaic conversion panel;
as a first advantage of the present invention, the system further comprises a plurality of remote terminal units distributed around the solar photovoltaic conversion panel in different orientations, the plurality of remote terminal units being in data communication with the tracking control device through a field edge computing unit;
the remote terminal unit comprises a photosensitive sensor and a wind speed sensor, and the on-site edge computing terminal is in wireless communication with the remote centralized control platform;
as a second advantage of the present invention, the field edge computing unit receives weather parameter information sent by the remote centralized control platform, where the weather parameter information includes first wind speed information and second weather type information of a position where the solar photovoltaic conversion panel is located;
the remote terminal units respectively acquire a third light intensity signal through the photosensitive sensor, acquire fourth wind speed information through the wind speed sensor and send the third light intensity signal and the fourth wind speed information to the site edge calculation unit;
the field edge computing unit collects the third light intensity signals and the fourth wind speed information of the plurality of remote terminal units and then generates control and adjustment signals;
as a third advantage of the present invention, the tracking control device receives the control adjustment signal and the first wind speed information and the second weather type information, and generates a tracking control command after comparing the control adjustment signal with the first wind speed information and the second weather type information;
and controlling the state change of the solar photoelectric conversion panel based on the tracking control instruction.
More specifically, as a key technical means for embodying the above advantages, the remote centralized control platform includes a geographic information database, and the geographic information database stores geographic position information of the solar photovoltaic conversion panel;
and the remote centralized control platform acquires weather parameter information corresponding to the geographical position information through a real-time weather database and sends the weather parameter information to the tracking control device of the photoelectric conversion plate corresponding to the geographical position information.
After the field edge computing unit receives weather parameter information sent by a remote centralized control platform and field state sensing signal information acquired by the remote terminal units, the tracking control device generates a tracking control instruction;
controlling the state change of the solar photoelectric conversion panel based on the tracking control instruction;
the state change comprises angle change and height change of the solar photoelectric conversion panel.
In a second aspect of the present invention, an automatic tracking control method for a solar photovoltaic power generation system is provided, where the solar photovoltaic power generation system includes a plurality of solar photovoltaic conversion panels and a tracking control device for controlling state changes of the solar photovoltaic conversion panels;
specifically, a plurality of remote terminal units in different geographical directions are uniformly arranged in a target range with each solar photoelectric conversion plate as a circle center and a radius of R, and the remote terminal units are communicated with the tracking control device through a field edge calculation unit.
After the field edge computing unit receives weather parameter information sent by a remote centralized control platform and field state sensing signal information acquired by the remote terminal units, the tracking control device generates a tracking control instruction, and the method specifically comprises the following steps:
s1: acquiring field state sensing signal information acquired by the remote terminal unit, wherein the field state sensing signal information comprises field wind speed information and field light intensity information acquired by the remote terminal unit;
s2: generating a control adjustment signal based on the field wind speed information and the field light intensity information;
s3: acquiring weather parameter information sent by the remote centralized control platform, wherein the weather parameter information comprises real-time wind speed information and real-time weather type information of the position where the solar photovoltaic conversion panel is located;
s4: searching a corresponding light intensity signal range from a preset relational database based on the weather type information;
s5: and generating a tracking control instruction based on one or a combination of the light intensity signal range, the control adjustment signal and the real-time wind speed information.
The preset relational database stores corresponding relations between weather type information and light intensity signal ranges of different geographical positions in different time periods.
The tracking control instruction is generated based on a plurality of time-series values of the light intensity information and the wind speed information,
based on the tracking control instruction, controlling the state change of the solar photoelectric conversion panel, specifically comprising:
based on the plurality of light intensity signal values, the solar azimuth driving mechanism adjusts the angle (solar azimuth) of the solar photoelectric conversion plate;
based on the wind speed information, a solar altitude driving mechanism adjusts the height (solar altitude) of the solar photovoltaic conversion panel.
Further advantages of the invention will be apparent in the detailed description section in conjunction with the drawings attached hereto.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is an overall schematic diagram of an auto-tracking solar photovoltaic power generation system according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of the distribution of Remote Terminal Units (RTUs) in the embodiment of FIG. 1;
FIG. 3 is a schematic diagram of the system operating in accordance with the embodiment of FIG. 1;
fig. 4 is a flow chart of an automatic tracking control method implemented by the system of fig. 1.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Referring to fig. 1, an overall schematic diagram of an auto-tracking solar photovoltaic power generation system according to an embodiment of the present invention is shown.
In fig. 1, the system includes a solar photovoltaic panel and a tracking control device in communication with the solar photovoltaic panel.
The system also comprises a plurality of remote terminal units distributed around the solar photoelectric conversion plate and positioned in different directions, wherein the remote terminal units are in data communication with the tracking control device through a field edge calculation unit.
The remote centralized control platform comprises a geographic information database, and the geographic information database stores geographic position information of the solar photoelectric conversion plate;
and the remote centralized control platform acquires weather parameter information corresponding to the geographical position information through a real-time weather database and sends the weather parameter information to the tracking control device of the photoelectric conversion plate corresponding to the geographical position information.
The tracking control device is internally provided with a control database, and the control database prestores corresponding relations between weather type information and light intensity signal ranges at different geographic positions and different time periods.
In fig. 1, although not shown, the remote terminal unit includes a light sensitive sensor and a wind speed sensor, the field edge computing terminal wirelessly communicating with a remote centralized control platform;
the remote terminal units respectively acquire a third light intensity signal through the photosensitive sensor, acquire fourth wind speed information through the wind speed sensor, and send the third light intensity signal and the fourth wind speed information to the site edge calculation unit.
On the basis of fig. 1, referring to fig. 2, a distribution diagram of Remote Terminal Units (RTUs) in the embodiment of fig. 1 is shown.
In fig. 2, the plurality of remote terminal units in different orientations include four remote terminal units in four different geographical directions within a predetermined target range, where the predetermined target range is a circle range with a radius R and the center of the solar photovoltaic conversion panel; the four different geographic directions are south-east-west-north, and the four remote terminals are respectively positioned on the circumferences of the four directions of south-east-west-north of the circle.
The first terminal unit (RTU1), the second terminal unit (RTU2) are located on the same diameter, and the third terminal unit (RTU3), the fourth terminal unit (RTU4) are located on the same diameter.
It is noted that in the above embodiments of the present invention, the edge computing unit and the remote terminal unit are used for the first time.
The edge computing means that an open platform integrating network, computing, storage and application core capabilities is adopted at one side close to an object or a data source to provide nearest-end service nearby. The application program is initiated at the edge side, so that a faster network service response is generated, and the basic requirements of the industry in the aspects of real-time business, application intelligence, safety, privacy protection and the like are met. The edge computation is between the physical entity and the industrial connection, or on top of the physical entity.
The edge computing unit in this embodiment refers to a terminal device arranged on the photovoltaic power generation site and used for realizing edge computing on the local site, and can avoid data blockage and be matched with cloud computing supported by a remote centralized control platform.
A Remote Terminal Unit (RTU), which is a special computer measurement and control Unit with a modular structure designed for long communication distance and severe industrial field environment.
The RTU can be implemented in a variety of different hardware and software depending on the nature of the controlled site, site environmental conditions, system complexity, requirements for data communication, real-time alarm reporting, analog signal measurement accuracy, condition monitoring, regulatory control of the device, and on-off control. Because the data transmission protocol, information structure and error detection technology adopted by each manufacturer are different, each manufacturer generally produces a special RTU matched with the SCADA system.
The RTU of this embodiment is the measurement and control module who is exclusively used in photovoltaic power generation field data monitoring.
On the basis of fig. 1-2, see fig. 3.
The field edge computing unit collects the third light intensity signals and the fourth wind speed information of the plurality of remote terminal units and then generates control and adjustment signals;
the tracking control device receives the control adjustment signal and the first wind speed information and the second weather type information, compares the control adjustment signal with the first wind speed information and the second weather type information, and generates a tracking control instruction;
and controlling the state change of the solar photoelectric conversion panel based on the tracking control instruction.
The state change comprises angle change and height change of the solar photoelectric conversion panel.
The angle and the altitude may be a solar altitude and a solar azimuth, respectively.
With further reference to fig. 4, a schematic flow chart of an automatic tracking control method implemented by the system of fig. 1 is shown on the basis of fig. 1-3.
In fig. 4, an automatic tracking control method for a solar photovoltaic power generation system includes a plurality of solar photovoltaic conversion panels and a tracking control device for controlling state changes of the solar photovoltaic conversion panels;
a plurality of remote terminal units in different geographical directions are uniformly distributed in a target range with the circle center of each solar photoelectric conversion plate and the radius of each solar photoelectric conversion plate as R, and the remote terminal units are communicated with the tracking control device through a field edge calculation unit;
after the field edge computing unit receives weather parameter information sent by a remote centralized control platform and field state sensing signal information acquired by the remote terminal units, the tracking control device generates a tracking control instruction;
controlling the state change of the solar photoelectric conversion panel based on the tracking control instruction; the state change comprises angle change and height change of the solar photoelectric conversion panel.
After the field edge computing unit receives weather parameter information sent by a remote centralized control platform and field state sensing signal information acquired by the remote terminal units, the tracking control device generates a tracking control instruction, and the method specifically comprises the following steps:
s1: acquiring field state sensing signal information acquired by the remote terminal unit, wherein the field state sensing signal information comprises field wind speed information and field light intensity information acquired by the remote terminal unit;
s2: generating a control adjustment signal based on the field wind speed information and the field light intensity information;
s3: acquiring weather parameter information sent by the remote centralized control platform, wherein the weather parameter information comprises real-time wind speed information and real-time weather type information of the position where the solar photovoltaic conversion panel is located;
s4: searching a corresponding light intensity signal range from a preset relational database based on the weather type information;
s5: and generating a tracking control instruction based on one or a combination of the light intensity signal range, the control adjustment signal and the real-time wind speed information.
The preset relational database stores corresponding relations between weather type information and light intensity signal ranges of different geographical positions in different time periods.
The tracking control instruction is generated based on a plurality of time-series values of the light intensity information and the wind speed information,
based on the tracking control instruction, controlling the state change of the solar photoelectric conversion panel, specifically comprising:
adjusting the angle of the solar photoelectric conversion plate based on a plurality of light intensity signal values;
and adjusting the height of the solar photoelectric conversion plate based on the wind speed information.
As a more specific embodiment, when the RTU is the setting shown in fig. 2, the field edge calculating unit generates a control adjustment signal after summarizing the third light intensity signals and the fourth wind speed information of the plurality of remote terminal units, specifically including:
obtaining the first terminal unit, the second terminal unit, and the third terminalThe third light intensity signal L collected by the unit and the fourth terminal unit respectively1、L2、L3、L4And fourth wind speed information
Judgment of
And
and
whether the directions are the same;
if it is not
And
and
the directions are the same, then the control adjustment signal is CT＝{avgL，maxV}’
Wherein the content of the first and second substances,
if only
And
if the direction is the same, the control adjustment signal is:
CT＝{avgL，maxV}；
wherein the content of the first and second substances,
if only
And
if the direction is the same, the control adjustment signal is:
CT＝{avgL，maxV}；
wherein the content of the first and second substances,
the tracking control device receives the control adjustment signal and the first wind speed information and the second weather type information, compares the control adjustment signal with the first wind speed information and the second weather type information, and generates a tracking control instruction, and specifically includes:
the tracking control device is internally provided with a control database, and the control database prestores corresponding relations between weather type information and light intensity signal ranges at different time periods in different geographic positions;
based on the corresponding relation, the tracking control device acquires a light intensity signal range corresponding to the second weather type information;
judging whether the avgL value in the control adjustment signal falls into the light intensity signal range or not;
if yes, generating a tracking control instruction based on the control adjusting signal;
and if not, generating a tracking control instruction based on the light intensity signal range and the maxV value in the control adjusting signal.
The second weather type information Cweather＝{C1，C2，C3，C4，C5，C6，C7}；
Wherein, C1Representing a cloudy day, C2Representing a sunny day, C3Representing cloudy, C4Representing rainy day, C5Representing snow sky, C6Representing a hail sky, C7Represents except C1-C6Weather other than the weather;
the above-mentioned
Representing wind speed information
I is 1, 2, 3, 4.
It should be noted that, after obtaining a plurality of accurate time-series values of the light intensity information and the wind speed information, how to generate a tracking control command and control the state change of the solar photovoltaic conversion panel based on the light intensity signal value and/or the wind speed information in the tracking control command, there are a plurality of known prior arts in the art, such as the light control and solar control technologies mentioned in the foregoing background art;
for example, for the light control technology, after a light intensity signal value is obtained, when the position of the sun changes, the photosensor generates a deviation current, the photoelectric detection circuit amplifies and shapes the deviation current to output a deviation signal to the controller, and the controller receives the deviation signal and drives the motor to rotate, so that incident light of the sun vertically irradiates on the light receiving surface of the tracking device.
For the solar control technology, the rotation tendency of the solar azimuth angle can be corrected according to the wind speed information so as to correct the accumulated deviation.
Of course, this is not the focus of the present invention, which is inventive in the data acquisition and accuracy of the light intensity information and the wind speed information before that.
Further, how to generate the tracking control command based on the obtained light intensity information and the wind speed information can be referred to the following prior art, and the present invention is not described in detail herein.
F.r.Rubio，M.G.Ortega，F.Gordillo.Application Of new control strategyfor sun tracking[J].Energy Conversion and Management，2007，48(7)：2174-2184
Wangshang, great, yellow tree red, research on hybrid two-axis solar automatic tracking devices [ J ]. renewable energy, 2007, 25 (6): 22-25
Marlett Wentzel，Anastassios Pouris.The development impact of solarcookers：A review of solar cooking research in South Africa[C].Energy Policy，2007，35(3)：1909-1919。
Wanghai army, mixed dual-axis sun tracking judgment system [ D ] based on cloudy and sunny judgment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An automatic tracking type solar photovoltaic power generation system comprises a solar photovoltaic conversion plate and a tracking control device communicated with the solar photovoltaic conversion plate;
the method is characterized in that:
the system also comprises a plurality of remote terminal units distributed around the solar photoelectric conversion plate and positioned in different directions, wherein the remote terminal units are in data communication with the tracking control device through a field edge calculation unit;
the remote terminal unit comprises a photosensitive sensor and a wind speed sensor, and the on-site edge computing terminal is in wireless communication with the remote centralized control platform;
the field edge computing unit receives weather parameter information sent by the remote centralized control platform, wherein the weather parameter information comprises first wind speed information and second weather type information of the position where the solar photoelectric conversion panel is located;
the remote terminal units respectively acquire a third light intensity signal through the photosensitive sensor, acquire fourth wind speed information through the wind speed sensor and send the third light intensity signal and the fourth wind speed information to the site edge calculation unit;
the field edge computing unit collects the third light intensity signals and the fourth wind speed information of the plurality of remote terminal units and then generates control and adjustment signals;
the tracking control device receives the control adjustment signal and the first wind speed information and the second weather type information, compares the control adjustment signal with the first wind speed information and the second weather type information, and generates a tracking control instruction;
and controlling the state change of the solar photoelectric conversion panel based on the tracking control instruction.
2. The automatic tracking solar photovoltaic power generation system of claim 1, wherein:
the plurality of remote terminal units in different directions comprise four remote terminal units in four different geographical directions within a preset target range, and the preset target range is a circle range with the center of the solar photoelectric conversion plate and the radius of R; the four different geographic directions are south-east-west-north, and the four remote terminals are respectively positioned on the circumferences of the four directions of south-east-west-north of the circle.
3. The automatic tracking solar photovoltaic power generation system of claim 1, wherein:
the remote centralized control platform comprises a geographic information database, and the geographic information database stores geographic position information of the solar photoelectric conversion plate;
and the remote centralized control platform acquires weather parameter information corresponding to the geographical position information through a real-time weather database and sends the weather parameter information to the tracking control device of the photoelectric conversion plate corresponding to the geographical position information.
4. The automatic tracking solar photovoltaic power generation system of claim 2, wherein:
after the on-site edge calculating unit summarizes the third light intensity signals and the fourth wind speed information of the plurality of remote terminal units, a control adjusting signal is generated, and the method specifically comprises the following steps:
acquiring the third light intensity signal L acquired by the first remote terminal unit, the second remote terminal unit, the third remote terminal unit and the fourth remote terminal unit in the four remote terminal units respectively1、L2、L3、L4And fourth wind speed information
Judgment of
And
and
whether the directions are the same;
if it is not
And
and
the directions are the same, then the control adjustment signal is CT＝{avgL，maxV}，
Wherein the content of the first and second substances,
if only
And
if the direction is the same, the control adjustment signal is:
CT＝{avgL，maxV}；
wherein the content of the first and second substances,
if only
And
if the direction is the same, the control adjustment signal is:
CT＝{avgL，maxV}；
wherein the content of the first and second substances,
5. the automatic tracking solar photovoltaic power generation system of claim 4, wherein:
the tracking control device receives the control adjustment signal and the first wind speed information and the second weather type information, compares the control adjustment signal with the first wind speed information and the second weather type information, and generates a tracking control instruction, and specifically includes:
the tracking control device is internally provided with a control database, and the control database prestores corresponding relations between weather type information and light intensity signal ranges at different time periods in different geographic positions;
based on the corresponding relation, the tracking control device acquires a light intensity signal range corresponding to the second weather type information;
judging whether the avgL value in the control adjustment signal falls into the light intensity signal range or not;
if yes, generating a tracking control instruction based on the control adjusting signal;
and if not, generating a tracking control instruction based on the light intensity signal range and the maxV value in the control adjusting signal.
6. The automatic tracking solar photovoltaic power generation system of claim 4, wherein:
the second weather type information Cweather＝{C1，C2，C3，C4，C5，C6，C7}；
Wherein, C1Representing a cloudy day, C2Representing a sunny day, C3Representing cloudy, C4Representing rainy day, C5Representing snow sky, C6Representing a hail sky, C7Represents except C1-C6Weather other than the weather;
the above-mentioned
Representing wind speed information
I is 1, 2, 3, 4.
7. An automatic tracking control method of a solar photovoltaic power generation system comprises a plurality of solar photovoltaic conversion plates and a tracking control device for controlling state changes of the solar photovoltaic conversion plates;
the method is characterized in that:
a plurality of remote terminal units in different geographical directions are uniformly distributed in a target range with the circle center of each solar photoelectric conversion plate and the radius of each solar photoelectric conversion plate as R, and the remote terminal units are communicated with the tracking control device through a field edge calculation unit;
after the field edge computing unit receives weather parameter information sent by a remote centralized control platform and field state sensing signal information acquired by the remote terminal units, the tracking control device generates a tracking control instruction;
controlling the state change of the solar photoelectric conversion panel based on the tracking control instruction;
the state change comprises angle change and height change of the solar photoelectric conversion panel.
8. The automatic tracking control method according to claim 7, characterized in that:
after the field edge computing unit receives weather parameter information sent by a remote centralized control platform and field state sensing signal information acquired by the remote terminal units, the tracking control device generates a tracking control instruction, and the method specifically comprises the following steps:
s1: acquiring field state sensing signal information acquired by the remote terminal unit, wherein the field state sensing signal information comprises field wind speed information and field light intensity information acquired by the remote terminal unit;
s2: generating a control adjustment signal based on the field wind speed information and the field light intensity information;
s3: acquiring weather parameter information sent by the remote centralized control platform, wherein the weather parameter information comprises real-time wind speed information and real-time weather type information of the position where the solar photovoltaic conversion panel is located;
s4: searching a corresponding light intensity signal range from a preset relational database based on the weather type information;
s5: and generating a tracking control instruction based on one or a combination of the light intensity signal range, the control adjustment signal and the real-time wind speed information.
9. The automatic tracking control method according to claim 8, characterized in that:
the preset relational database stores corresponding relations between the weather type information and the light intensity signal range of different geographical positions in different time periods.
10. The automatic tracking control method according to claim 8, characterized in that:
the tracking control instruction is generated based on a plurality of time-series values of the light intensity information and the wind speed information,
based on the tracking control instruction, controlling the state change of the solar photoelectric conversion panel, specifically comprising:
adjusting the angle of the solar photoelectric conversion plate based on a plurality of time sequence values of a plurality of light intensity signal values;
and adjusting the height of the solar photoelectric conversion plate based on a plurality of time series values of the wind speed information.
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