Photovoltaic array tracking bracket and control method thereof

Abstract

The invention relates to the technical field of photovoltaic arrays, and discloses a photovoltaic array tracking bracket and a control method thereof. The solar illumination point on the photovoltaic array is determined based on the solar illumination area; power generation influence information and solar illumination information of the solar illumination point are collected, and a tracking credible value of the solar illumination point is calculated based on the analysis result; a compensation coefficient of each solar illumination point is set based on historical power generation information, and the tracking credible value is compensated according to the compensation coefficient to obtain a target tracking credible value; all target tracking credible values ​​are sorted by numerical value, and a target solar illumination point corresponding to the maximum target tracking credible value is extracted; a reference point is selected on the photovoltaic array, and the photovoltaic array is controlled based on the target solar illumination point and the reference point, so as to realize intelligent control of the photovoltaic array tracking bracket, ensure control accuracy and control efficiency, effectively improve the power generation efficiency and energy utilization rate of the photovoltaic array, and reduce the control energy consumption of the photovoltaic array tracking bracket.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic arrays, and in particular to a photovoltaic array tracking bracket and a control method thereof. Background Art

[0002] In solar photovoltaic power generation systems, in order to improve power generation efficiency, photovoltaic arrays usually need to face the sun to obtain maximum light intensity. For this reason, various types of photovoltaic array tracking bracket systems have been developed. These systems can be divided into two categories: single-axis tracking systems and dual-axis tracking systems. Single-axis tracking systems allow photovoltaic arrays to rotate around a horizontal axis, thereby following the east-west movement of the sun during the day. Dual-axis tracking systems go a step further. In addition to east-west tracking, they can also adjust the photovoltaic array around the vertical axis to track the north-south changes in the height of the sun.

[0003] The photovoltaic array tracking bracket in the prior art usually includes components such as a bracket structure, a drive motor, a transmission mechanism, a control unit and a sensor. The control system commands the drive motor to adjust the angle of the bracket according to the data collected from the sensor (such as the position of the sun, the ambient light intensity, etc.) to ensure that the photovoltaic panel obtains the optimal light. However, in the prior art, the operation of the tracking system requires a certain amount of electrical energy. Especially when it is cloudy or the light conditions are poor, the energy consumption of the tracking system reduces the energy efficiency of the overall photovoltaic system. Sometimes the energy consumed by the tracking system is greater than the electricity generated by the photovoltaic module. Summary of the invention

[0004] The embodiment of the present invention provides a photovoltaic array tracking bracket and a control method thereof, which are used to solve the technical problem in the prior art that the photovoltaic array cannot be intelligently controlled and the power generation efficiency and energy utilization rate of the photovoltaic array cannot be effectively improved.

[0005] In order to achieve the above object, the present invention provides a photovoltaic array tracking bracket control method, comprising:

[0006] Acquire a solar illumination area of ​​a photovoltaic array, and determine a solar illumination point on the photovoltaic array based on the solar illumination area;

[0007] Collecting power generation impact information and solar illumination information of each solar illumination point, analyzing the power generation impact information and the solar illumination information, and calculating a tracking reliability value of each solar illumination point based on the analysis result;

[0008] Acquire historical control information of each solar illumination point and historical power generation information of the corresponding photovoltaic array, set a compensation coefficient for each solar illumination point based on the historical power generation information, compensate the tracking credible value according to the compensation coefficient, and obtain a target tracking credible value;

[0009] All target tracking credible values ​​are sorted by numerical value, and the target sunlight point corresponding to the maximum target tracking credible value is extracted;

[0010] A control point is selected on the photovoltaic array, and the photovoltaic array is controlled based on the target sunlight point and the control point.

[0011] Furthermore, when the power generation impact information and the sunlight information of each sunlight point are collected, the power generation impact information and the sunlight information are analyzed, and the tracking reliability value of each sunlight point is calculated based on the analysis result, it includes:

[0012] Based on the sunlight collection time, a time-sunlight intensity information chain is generated according to the sunlight information;

[0013] Analyzing the time-sunlight intensity information chain, and calculating a first credible impact value of the sunlight point according to each sunlight intensity and the corresponding illumination duration;

[0014] a1=e×b+c×f;

[0015] Among them, a1 is the first credible influence of the sunlight point, e is the sunlight intensity corresponding to the sunlight point, b is the weight corresponding to the sunlight intensity, c is the illumination duration corresponding to the sunlight point, and b is the weight corresponding to the illumination duration;

[0016] Analyzing the power generation impact information of each solar illumination point, and dividing the power generation impact information into self-impact information and associated impact information;

[0017] Constructing a self-influence information sequence according to all self-influence information, and constructing a related influence information sequence according to the related influence information;

[0018] Determine a self-standard impact information range sequence corresponding to the self-impact information sequence, and determine an associated standard impact information range sequence corresponding to the associated impact information sequence;

[0019] Generate a corresponding first positive score for the self-influence information in the self-influence information sequence that meets the self-standard influence information range sequence;

[0020] Generate a corresponding first negative score value for the self-influence information in the self-influence information sequence that does not conform to the self-standard influence information range sequence;

[0021] Generate a corresponding second positive score for the associated impact information in the associated impact information sequence that meets the associated standard impact information range sequence;

[0022] Generate a corresponding second negative score value for the association impact information in the association impact information sequence that does not conform to the association standard impact information range sequence;

[0023] Calculate a second credible impact value a2 for each sunlight point according to the first positive score value, the first negative score value, the second positive score value, and the second negative score value;

[0024] The product value Δa of the first credible influence value a1 and the second credible influence value a2 is calculated, and the product value is used as the tracking credible value corresponding to the sunlight illumination point.

[0025] Further, when calculating the second credible influence value a2 of each sunlight point according to the first positive score value, the first negative score value, the second positive score value and the second negative score value, it includes:

[0026] The second credible influence value a2 of the sunlight point is calculated according to the following formula:

[0027]

[0028] Among them, g1 is the weight corresponding to the self-influence information sequence, h1 is the calculation coefficient corresponding to the first positive score, n1 is the number of first positive scores, ki is the i-th first positive score, k 均 is the average value obtained by calculating the first positive score value, h2 is the calculation coefficient corresponding to the first negative score value, n2 is the number of first negative score values, nj is the jth first negative score value, n 均 is the average value obtained by calculating the first negative score value, g2 is the weight corresponding to the associated influence information sequence, h3 is the calculation coefficient corresponding to the second positive score value, m1 is the number of second positive score values, px is the xth second positive score value, p 均 is the average value obtained by calculating the second positive score, h4 is the calculation coefficient corresponding to the second negative score, m2 is the number of second negative scores, qy is the yth second negative score, q 均 The average value obtained by calculating the second negative score value.

[0029] Further, when acquiring historical control information of each sunlight point and historical power generation information of the corresponding photovoltaic array, and setting a compensation coefficient of each sunlight point based on the historical power generation information, and compensating the tracking credible value according to the compensation coefficient to obtain the target tracking credible value, it includes:

[0030] Collecting the output current and output voltage of the photovoltaic array within a preset time period;

[0031] Calculating the historical power generation efficiency of the corresponding photovoltaic array according to the output current and the output voltage;

[0032] Presetting a first preset historical power generation efficiency and a second preset historical power generation efficiency;

[0033] Presetting a first preset compensation coefficient, a second preset compensation coefficient, and a third preset compensation coefficient;

[0034] When a first preset compensation condition is identified, a product value of the first preset compensation coefficient and the tracking credibility value is calculated, and the product value is used as the target tracking credibility value;

[0035] When a second preset compensation condition is identified, a product value of the second preset compensation coefficient and the tracking credibility value is calculated, and the product value is used as the target tracking credibility value;

[0036] When the third preset compensation condition is identified, the product value of the third preset compensation coefficient and the tracking credible value is calculated, and the product value is used as the target tracking credible value; wherein, the first preset compensation condition is that the historical power generation efficiency is less than the first preset historical power generation efficiency, the second preset compensation condition is that the historical power generation efficiency is greater than or equal to the first preset historical power generation efficiency and less than the second preset historical power generation efficiency, and the third preset compensation condition is that the historical power generation efficiency is greater than or equal to the second preset historical power generation efficiency.

[0037] Further, when calculating the historical power generation efficiency of the corresponding photovoltaic array according to the output current and the output voltage, it includes:

[0038] The historical power generation efficiency of the corresponding photovoltaic array is calculated according to the following formula:

[0039]

[0040] Where R is the historical power generation efficiency of the photovoltaic array, v is the electron charge, U is the output voltage, I is the output current, and R 串 is the series resistance, s is the calculation coefficient, w is the Boltzmann constant, T is the absolute temperature, R 并 is a parallel resistor.

[0041] Furthermore, when a control point is selected on the photovoltaic array and the photovoltaic array is controlled based on the target sunlight point and the control point, the method includes:

[0042] Deploy an infrared transmitting device at the control point, and deploy an infrared receiving device at the target sunlight point;

[0043] Based on the first time node, the infrared transmitting device is controlled to transmit infrared light to the infrared receiving device, and when the infrared receiving device receives the infrared light, a second time node is recorded;

[0044] A time node difference between the first time node and the second time node is calculated, and a driving power of the photovoltaic array is set according to the time node difference.

[0045] Further, when setting the driving power of the photovoltaic array according to the time node difference, it includes:

[0046] Preset a first preset time node difference and a second preset time node difference;

[0047] Presetting a first preset driving power, a second preset driving power, and a third preset driving power;

[0048] When a first preset driving condition is identified, the first preset driving condition is used as the driving power of the photovoltaic array;

[0049] When a second preset driving condition is identified, the second preset driving condition is used as the driving power of the photovoltaic array;

[0050] When a third preset driving condition is identified, the third preset driving condition is used as the driving power of the photovoltaic array; wherein the first preset driving condition is that the time node difference is less than the first preset time node difference, the second preset driving condition is that the time node difference is greater than or equal to the first preset time node difference and less than the second preset time node difference, and the third preset driving condition is that the time node difference is greater than or equal to the second preset time node difference.

[0051] Furthermore, a photovoltaic array tracking bracket is disclosed, comprising:

[0052] A photovoltaic array tracking bracket, a support assembly, a main controller, a collection device, an acquisition device and a drive motor, wherein the collection device, the acquisition device and the drive motor are fixed on the photovoltaic array tracking bracket and are electrically connected to the main controller respectively, the support assembly is connected to the output end of the drive motor, and the support assembly is rotatably connected to the main body; the main controller is used to control the drive motor according to the received control instructions.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] The present invention discloses a photovoltaic array tracking bracket and a control method thereof. The method comprises the following steps: determining a solar illumination point on a photovoltaic array based on a solar illumination area; collecting power generation influence information and solar illumination information of the solar illumination point, and calculating a tracking credible value of the solar illumination point based on an analysis result; setting a compensation coefficient for each solar illumination point based on historical power generation information, compensating the tracking credible value according to the compensation coefficient, and obtaining a target tracking credible value; sorting all the target tracking credible values ​​by numerical value, and extracting a target solar illumination point corresponding to a maximum target tracking credible value; selecting a reference point on the photovoltaic array, and controlling the photovoltaic array based on the target solar illumination point and the reference point, thereby realizing intelligent control of the photovoltaic array tracking bracket, ensuring control accuracy and control efficiency, effectively improving the power generation efficiency and energy utilization rate of the photovoltaic array, and reducing the control energy consumption of the photovoltaic array tracking bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0056] Figure 1 A schematic flow chart of a photovoltaic array tracking bracket control method in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0057] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0058] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0059] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0060] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

[0062] like Figure 1 As shown, an embodiment of the present invention discloses a photovoltaic array tracking bracket control method, comprising:

[0063] S110: Acquire a sunlight illumination area of ​​a photovoltaic array, and determine a sunlight illumination point on the photovoltaic array based on the sunlight illumination area;

[0064] In this embodiment, the sunlight points can be set according to the area and complexity of the photovoltaic array, as long as they are evenly arranged.

[0065] S120: collecting power generation impact information and sunlight information of each sunlight point, analyzing the power generation impact information and the sunlight information, and calculating a tracking reliability value of each sunlight point based on the analysis result;

[0066] In some embodiments of the present application, when collecting power generation impact information and sunlight information of each sunlight point, analyzing the power generation impact information and the sunlight information, and calculating the tracking credibility value of each sunlight point based on the analysis result, it includes:

[0067] Based on the sunlight collection time, a time-sunlight intensity information chain is generated according to the sunlight information;

[0068] Analyzing the time-sunlight intensity information chain, and calculating a first credible impact value of the sunlight point according to each sunlight intensity and the corresponding illumination duration;

[0069] a1=e×b+c×f;

[0070] Among them, a1 is the first credible influence of the sunlight point, e is the sunlight intensity corresponding to the sunlight point, b is the weight corresponding to the sunlight intensity, c is the illumination duration corresponding to the sunlight point, and b is the weight corresponding to the illumination duration;

[0071] Analyzing the power generation impact information of each solar illumination point, and dividing the power generation impact information into self-impact information and associated impact information;

[0072] Constructing a self-influence information sequence according to all self-influence information, and constructing a related influence information sequence according to the related influence information;

[0073] Determine a self-standard impact information range sequence corresponding to the self-impact information sequence, and determine an associated standard impact information range sequence corresponding to the associated impact information sequence;

[0074] Generate a corresponding first positive score for the self-influence information in the self-influence information sequence that meets the self-standard influence information range sequence;

[0075] Generate a corresponding first negative score value for the self-influence information in the self-influence information sequence that does not conform to the self-standard influence information range sequence;

[0076] Generate a corresponding second positive score for the associated impact information in the associated impact information sequence that meets the associated standard impact information range sequence;

[0077] Generate a corresponding second negative score value for the association impact information in the association impact information sequence that does not conform to the association standard impact information range sequence;

[0078] Calculate a second credible impact value a2 for each sunlight point according to the first positive score value, the first negative score value, the second positive score value, and the second negative score value;

[0079] A product value Δa of the first credible influence value a1 and the second credible influence value a2 is calculated, and the product value is used as a tracking credible value corresponding to the sunlight point.

[0080] In this embodiment, the photovoltaic arrays have different capabilities of receiving sunlight, so the actual illumination intensity of each sunlight point is different.

[0081] In this embodiment, the power generation influencing information includes component efficiency, power generation loss, line loss, transformer loss, ambient temperature, ambient humidity, dust accumulation, etc. The above-mentioned component efficiency, power generation loss, line loss, transformer loss, etc. are self-influencing information, and ambient temperature, ambient humidity, dust accumulation, etc. are related impact information.

[0082] In this embodiment, the correlation standard impact information range sequence includes multiple correlation standard impact information ranges.

[0083] The beneficial effects of the above technical solution are: the present invention calculates the first credible influence value of the sunlight point according to each sunlight intensity and the corresponding illumination duration, calculates the second credible influence value a2 of each sunlight point according to the first positive score value, the first negative score value, the second positive score value and the second negative score value, and calculates the tracking credible value of the sunlight point according to the first credible influence value and the second credible influence value, thereby ensuring the calculation accuracy, avoiding errors caused by human participation, laying the foundation for the control of the photovoltaic module array tracking bracket, and providing reliable data support.

[0084] In some embodiments of the present application, when calculating the second credible impact value a2 of each sunlight point according to the first positive score value, the first negative score value, the second positive score value, and the second negative score value, it includes:

[0085] The second credible influence value a2 of the sunlight point is calculated according to the following formula:

[0086]

[0087] Among them, g1 is the weight corresponding to the self-influence information sequence, h1 is the calculation coefficient corresponding to the first positive score, n1 is the number of first positive scores, ki is the i-th first positive score, k 均 is the average value obtained by calculating the first positive score value, h2 is the calculation coefficient corresponding to the first negative score value, n2 is the number of first negative score values, nj is the jth first negative score value, n 均 is the average value obtained by calculating the first negative score value, g2 is the weight corresponding to the associated influence information sequence, h3 is the calculation coefficient corresponding to the second positive score value, m1 is the number of second positive score values, px is the xth second positive score value, p 均 is the average value obtained by calculating the second positive score, h4 is the calculation coefficient corresponding to the second negative score, m2 is the number of second negative scores, qy is the yth second negative score, q 均 The average value obtained by calculating the second negative score value.

[0088] S130: acquiring historical control information of each sunlight point and historical power generation information of the corresponding photovoltaic array, and setting a compensation coefficient for each sunlight point based on the historical power generation information, and compensating the tracking credible value according to the compensation coefficient to obtain a target tracking credible value;

[0089] In some embodiments of the present application, when acquiring historical control information of each sunlight point and historical power generation information of the corresponding photovoltaic array, and setting a compensation coefficient for each sunlight point based on the historical power generation information, and compensating the tracking credible value according to the compensation coefficient to obtain the target tracking credible value, it includes:

[0090] Collecting the output current and output voltage of the photovoltaic array within a preset time period;

[0091] Calculating the historical power generation efficiency of the corresponding photovoltaic array according to the output current and the output voltage;

[0092] Presetting a first preset historical power generation efficiency and a second preset historical power generation efficiency;

[0093] Presetting a first preset compensation coefficient, a second preset compensation coefficient, and a third preset compensation coefficient;

[0094] When a first preset compensation condition is identified, a product value of the first preset compensation coefficient and the tracking credibility value is calculated, and the product value is used as the target tracking credibility value;

[0095] When a second preset compensation condition is identified, a product value of the second preset compensation coefficient and the tracking credibility value is calculated, and the product value is used as the target tracking credibility value;

[0096] When the third preset compensation condition is identified, the product value of the third preset compensation coefficient and the tracking credible value is calculated, and the product value is used as the target tracking credible value; wherein, the first preset compensation condition is that the historical power generation efficiency is less than the first preset historical power generation efficiency, the second preset compensation condition is that the historical power generation efficiency is greater than or equal to the first preset historical power generation efficiency and less than the second preset historical power generation efficiency, and the third preset compensation condition is that the historical power generation efficiency is greater than or equal to the second preset historical power generation efficiency.

[0097] In this embodiment, the first preset historical power generation efficiency is less than the second preset historical power generation efficiency.

[0098] In this embodiment, 0.8<first preset compensation coefficient<second preset compensation coefficient<third preset compensation coefficient<1.2.

[0099] The beneficial effect of the above technical solution is: the present invention selects the compensation coefficient according to the relationship between the historical power generation efficiency, the first preset historical power generation efficiency and the second preset historical power generation efficiency, and compensates the tracking credible value, which can further ensure the intelligent control and precise control of the photovoltaic array tracking bracket and avoid the singleness of control.

[0100] S140: sorting all target tracking credible values ​​by numerical value, and extracting the target sunlight point corresponding to the maximum target tracking credible value;

[0101] In this embodiment, if the number of maximum target tracking credible values ​​is two or more, a target sunlight point that is closest to the reference point is selected.

[0102] S150: Select a control point on the photovoltaic array, and control the photovoltaic array based on the target sunlight point and the control point.

[0103] In some embodiments of the present application, when a control point is selected on the photovoltaic array and the photovoltaic array is controlled based on the target sunlight point and the control point, the method includes:

[0104] Deploy an infrared transmitting device at the control point, and deploy an infrared receiving device at the target sunlight point;

[0105] Based on the first time node, the infrared transmitting device is controlled to transmit infrared light to the infrared receiving device, and when the infrared receiving device receives the infrared light, a second time node is recorded;

[0106] A time node difference between the first time node and the second time node is calculated, and a driving power of the photovoltaic array is set according to the time node difference.

[0107] In some embodiments of the present application, when setting the driving power of the photovoltaic array according to the time node difference, it includes:

[0108] Preset a first preset time node difference and a second preset time node difference;

[0109] Presetting a first preset driving power, a second preset driving power, and a third preset driving power;

[0110] When a first preset driving condition is identified, the first preset driving condition is used as the driving power of the photovoltaic array;

[0111] When a second preset driving condition is identified, the second preset driving condition is used as the driving power of the photovoltaic array;

[0112] When a third preset driving condition is identified, the third preset driving condition is used as the driving power of the photovoltaic array; wherein the first preset driving condition is that the time node difference is less than the first preset time node difference, the second preset driving condition is that the time node difference is greater than or equal to the first preset time node difference and less than the second preset time node difference, and the third preset driving condition is that the time node difference is greater than or equal to the second preset time node difference.

[0113] In this embodiment, the first preset time node difference is smaller than the second preset time node difference.

[0114] In this embodiment, the first preset driving power is smaller than the second preset driving power and smaller than the third preset driving power.

[0115] The beneficial effect of the above technical solution is: the present invention sets the driving power of the photovoltaic array according to the relationship between the time node difference, the first preset time node difference and the second preset time node difference, which can effectively reduce the driving energy consumption caused by driving the photovoltaic array tracking bracket, effectively improve the power generation energy efficiency ratio, and avoid the phenomenon that energy consumption is greater than power generation.

[0116] In order to further explain the technical idea of ​​the present invention, the technical solution of the present invention is now described in combination with specific application scenarios.

[0117] Correspondingly, the present application also provides a photovoltaic array tracking bracket, comprising:

[0118] A photovoltaic array tracking bracket, a support assembly, a main controller, a collection device, an acquisition device and a drive motor, wherein the collection device, the acquisition device and the drive motor are fixed on the photovoltaic array tracking bracket and are electrically connected to the main controller respectively, the support assembly is connected to the output end of the drive motor, and the support assembly is rotatably connected to the main body; the main controller is used to control the drive motor according to the received control instructions.

[0119] In some embodiments of the present application, an acquisition device is used to acquire a solar illumination area of ​​a photovoltaic array, and determine a solar illumination point on the photovoltaic array based on the solar illumination area; a collection device is used to collect power generation impact information and solar illumination information of each solar illumination point, and analyze the power generation impact information and the solar illumination information, and calculate a tracking credible value of each solar illumination point based on the analysis result; an acquisition device is used to acquire historical control information of each solar illumination point and historical power generation information of the corresponding photovoltaic array, and set a compensation coefficient for each solar illumination point based on the historical power generation information, compensate the tracking credible value according to the compensation coefficient, and obtain a target tracking credible value, and a main controller is used to sort all target tracking credible values ​​by numerical size, and extract a target solar illumination point corresponding to the maximum target tracking credible value; a control point is selected on the photovoltaic array, distance information between the target solar illumination point and the control point is determined, and the photovoltaic array is controlled based on the distance information.

[0120] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0121] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present invention may be used in combination with each other in any manner, and the fact that these combinations are not fully described in this specification is only for the sake of omitting space and saving resources.

[0122] Those skilled in the art can understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic array tracking bracket control method, characterized in that: include: Acquire a solar illumination area of ​​a photovoltaic array, and determine a solar illumination point on the photovoltaic array based on the solar illumination area; Collecting power generation impact information and solar illumination information of each solar illumination point, analyzing the power generation impact information and the solar illumination information, and calculating a tracking reliability value of each solar illumination point based on the analysis result; Acquire historical control information of each solar illumination point and historical power generation information of the corresponding photovoltaic array, set a compensation coefficient for each solar illumination point based on the historical power generation information, compensate the tracking credible value according to the compensation coefficient, and obtain a target tracking credible value; All target tracking credible values ​​are sorted by numerical size, and the target sunlight point corresponding to the maximum target tracking credible value is extracted; Selecting a control point on the photovoltaic array, and controlling the photovoltaic array based on the target sunlight point and the control point; When collecting power generation impact information and sunlight information of each sunlight point, analyzing the power generation impact information and the sunlight information, and calculating the tracking reliability value of each sunlight point based on the analysis result, it includes: Based on the sunlight collection time, a time-sunlight intensity information chain is generated according to the sunlight information; Analyzing the time-sunlight intensity information chain, and calculating a first credible impact value of the sunlight point according to each sunlight intensity and the corresponding illumination duration; ； Among them, a1 is the first credible influence value of the sunlight point, e is the sunlight intensity corresponding to the sunlight point, b is the weight corresponding to the sunlight intensity, c is the illumination duration corresponding to the sunlight point, and f is the weight corresponding to the illumination duration; Analyzing the power generation impact information of each solar illumination point, and dividing the power generation impact information into self-impact information and associated impact information; Constructing a self-influence information sequence according to all self-influence information, and constructing a related influence information sequence according to the related influence information; Determine a self-standard impact information range sequence corresponding to the self-impact information sequence, and determine an associated standard impact information range sequence corresponding to the associated impact information sequence; Generate a corresponding first positive score for the self-influence information in the self-influence information sequence that meets the self-standard influence information range sequence; Generate a corresponding first negative score value for the self-influence information in the self-influence information sequence that does not conform to the self-standard influence information range sequence; Generate a corresponding second positive score for the associated impact information in the associated impact information sequence that meets the associated standard impact information range sequence; Generate a corresponding second negative score value for the association impact information in the association impact information sequence that does not conform to the association standard impact information range sequence; Calculate a second credible impact value a2 for each sunlight point according to the first positive score value, the first negative score value, the second positive score value, and the second negative score value; Calculating a product value Δa of the first credible influence value a1 and the second credible influence value a2, and using the product value as a tracking credible value corresponding to the sunlight point; When calculating the second credible influence value a2 of each sunlight point according to the first positive score value, the first negative score value, the second positive score value and the second negative score value, it includes: The second credible influence value a2 of the sunlight point is calculated according to the following formula: Among them, g1 is the weight corresponding to the self-influence information sequence, h1 is the calculation coefficient corresponding to the first positive score, n1 is the number of first positive scores, ki is the i-th first positive score, k 均 is the average value obtained by calculating the first positive score value, h2 is the calculation coefficient corresponding to the first negative score value, n2 is the number of first negative score values, nj is the jth first negative score value, n 均 is the average value obtained by calculating the first negative score value, g2 is the weight corresponding to the associated influence information sequence, h3 is the calculation coefficient corresponding to the second positive score value, m1 is the number of second positive score values, px is the xth second positive score value, p 均 is the average value obtained by calculating the second positive score, h4 is the calculation coefficient corresponding to the second negative score, m2 is the number of second negative scores, qy is the yth second negative score, q 均 The average value obtained by calculating the second negative score value; When acquiring historical control information of each solar illumination point and historical power generation information of the corresponding photovoltaic array, and setting a compensation coefficient of each solar illumination point based on the historical power generation information, and compensating the tracking credible value according to the compensation coefficient to obtain the target tracking credible value, it includes: Collecting the output current and output voltage of the photovoltaic array within a preset time period; Calculating the historical power generation efficiency of the corresponding photovoltaic array according to the output current and the output voltage; Presetting a first preset historical power generation efficiency and a second preset historical power generation efficiency; Presetting a first preset compensation coefficient, a second preset compensation coefficient, and a third preset compensation coefficient; When a first preset compensation condition is identified, a product value of the first preset compensation coefficient and the tracking credibility value is calculated, and the product value is used as the target tracking credibility value; When a second preset compensation condition is identified, a product value of the second preset compensation coefficient and the tracking credibility value is calculated, and the product value is used as the target tracking credibility value; When a third preset compensation condition is identified, the product value of the third preset compensation coefficient and the tracking credible value is calculated, and the product value is used as the target tracking credible value; wherein the first preset compensation condition is that the historical power generation efficiency is less than the first preset historical power generation efficiency, the second preset compensation condition is that the historical power generation efficiency is greater than or equal to the first preset historical power generation efficiency and less than the second preset historical power generation efficiency, and the third preset compensation condition is that the historical power generation efficiency is greater than or equal to the second preset historical power generation efficiency; When calculating the historical power generation efficiency of the corresponding photovoltaic array according to the output current and the output voltage, it includes: The historical power generation efficiency of the corresponding photovoltaic array is calculated according to the following formula: ； Where R is the historical power generation efficiency of the photovoltaic array, v is the electron charge, U is the output voltage, I is the output current, and R 串 is the series resistance, s is the calculation coefficient, w is the Boltzmann constant, T is the absolute temperature, R 并 is the parallel resistance; A control point is selected on the photovoltaic array, and the photovoltaic array is controlled based on the target sunlight point and the control point, including: Deploy an infrared transmitting device at the control point, and deploy an infrared receiving device at the target sunlight point; Based on the first time node, the infrared transmitting device is controlled to transmit infrared light to the infrared receiving device, and when the infrared receiving device receives the infrared light, a second time node is recorded; Calculating a time node difference between the first time node and the second time node, and setting a driving power of the photovoltaic array according to the time node difference; When the driving power of the photovoltaic array is set according to the time node difference, it includes: Preset a first preset time node difference and a second preset time node difference; Presetting a first preset driving power, a second preset driving power, and a third preset driving power; When a first preset driving condition is identified, the first preset driving condition is used as the driving power of the photovoltaic array; When a second preset driving condition is identified, the second preset driving condition is used as the driving power of the photovoltaic array; When a third preset driving condition is identified, the third preset driving condition is used as the driving power of the photovoltaic array; wherein the first preset driving condition is that the time node difference is less than the first preset time node difference, the second preset driving condition is that the time node difference is greater than or equal to the first preset time node difference and less than the second preset time node difference, and the third preset driving condition is that the time node difference is greater than or equal to the second preset time node difference.

2. A photovoltaic array tracking bracket, which is controlled by the photovoltaic array tracking bracket control method as described in claim 1, characterized in that: include: A photovoltaic array tracking bracket, a support assembly, a main controller, a collection device, an acquisition device and a drive motor, wherein the collection device, the acquisition device and the drive motor are fixed on the photovoltaic array tracking bracket and are electrically connected to the main controller respectively, the support assembly is connected to the output end of the drive motor, and the support assembly is rotatably connected to the main body; The main controller is used to control the driving motor according to the received control instruction.

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