Photovoltaic array group cooperative regulation and control method and system based on phosphorescence intensity feedback

Abstract

The invention discloses a photovoltaic array group cooperative regulation and control method and system based on phosphorescence intensity feedback, and belongs to the technical field of photovoltaic power generation. The group coordinated regulation and control method comprises the following steps: constructing a three-dimensional coordinate graph of a photovoltaic area, obtaining the distribution position of each photovoltaic array in the photovoltaic area, and determining the position relationship between each photovoltaic array and the adjacent photovoltaic array; carrying out inclination angle adjustment on a plurality of spaced photovoltaic arrays at the same time, and obtaining the sum of the luminous intensity changes of all photovoltaic arrays adjacent to the adjusted photovoltaic array and the luminous intensity changes of the adjusted photovoltaic array based on the phosphorescent marks on each photovoltaic array and the position relationship between each photovoltaic array and the adjacent photovoltaic array; and performing group cooperation judgment by combining a set global adjustment coefficient and a set coupling coefficient between adjacent photovoltaic arrays, judging whether the inclination angle adjustment takes effect or not, when the inclination angle adjustment does not take effect, the original position is restored, and the inclination angle adjustment takes effect, keeping the inclination angle adjustment, returning, and adjusting other unadjusted photovoltaic arrays in the round until all the photovoltaic arrays are adjusted. And the next round of adjustment is carried out. According to the regulation and control method, randomness conflicts of individual regulation are avoided, the light receiving condition of the photovoltaic panel is directly reflected through phosphorescence intensity data, and the method is particularly suitable for scenes with complex terrains or changeable illumination.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic power generation, and particularly relates to a method and system for collaborative regulation of a photovoltaic array population based on phosphorescence intensity feedback. Background Art

[0002] During the operation of a photovoltaic power station, the tracking photovoltaic panel adjustment system generally relies on independent control of single components, and adjusts the bracket angle through a photosensitive sensor or a preset time program to track sunlight in order to obtain higher power generation efficiency of a single panel. However, when the photovoltaic arrays are arranged closely, there are some defects in this single-array adjustment mode: on the one hand, adjacent photovoltaic panels are prone to mutual occlusion or angle conflicts due to adjustment actions, resulting in the situation that although the power of a single array increases, they still "act independently", and the output power of adjacent arrays decreases instead of increasing, causing the overall output power not to reach the optimal situation; on the other hand, existing systems are mostly based on electrical signal feedback or meteorological prediction program control, and the real-time control ability is weak. In addition, although some studies have tried to optimize the regulation mode through a centralized algorithm, it relies on offline data and lacks the direct monitoring ability of the actual operating state caused by adjusting the inclination angle of the photovoltaic panel, resulting in the disconnection between the regulation instruction and the actual demand. Summary of the Invention

[0003] In order to overcome the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a method and system for collaborative regulation of a photovoltaic array population based on phosphorescence intensity feedback. This regulation method not only avoids the random conflicts of individual regulation, but also directly reflects the light-receiving situation of the photovoltaic panel through phosphorescence intensity data. It is particularly suitable for scenarios with complex terrain or variable light, and can reduce the power generation loss and maintenance cost increase caused by overall consistent regulation or timed regulation.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The present invention provides a method for collaborative regulation of a photovoltaic array population based on phosphorescence intensity feedback, including the following steps:

[0006] S1: Construct a three-dimensional coordinate map of the photovoltaic area, obtain the distribution positions of each photovoltaic array in the photovoltaic area, and determine the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays;

[0007] S2: Adjust the inclination angles of multiple spaced photovoltaic arrays simultaneously, and based on the phosphorescence marks on each photovoltaic array and the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays, obtain the sum of the luminous intensity changes of all photovoltaic arrays adjacent to the adjusted photovoltaic array and the luminous intensity change of the adjusted photovoltaic array;

[0008] S3: Then, combined with setting the global adjustment coefficient and the coupling coefficient between adjacent photovoltaic arrays, group collaborative judgment is performed to determine whether the tilt angle adjustment takes effect. When the tilt angle adjustment does not take effect, it returns to the original position. When the tilt angle adjustment takes effect, the tilt angle adjustment is maintained, and S2 is returned to adjust other unadjusted photovoltaic arrays in this round until all photovoltaic arrays are adjusted, and then the next round of adjustment is carried out.

[0009] In one embodiment, there are at least 2 unadjusted photovoltaic arrays spaced between the multiple spaced photovoltaic arrays.

[0010] In one embodiment, the tilt angle θ i The adjustment range of the adjustment is 0 to 5°, and θi ≠ 0.

[0011] In one embodiment, the process of then combining setting the global adjustment coefficient and the coupling coefficient between adjacent photovoltaic arrays to perform group collaborative judgment to determine whether the tilt angle adjustment takes effect is as follows:

[0012] When α·W i +β·ΣW j > 0, the tilt angle adjustment takes effect;

[0013] When α·W i +β·ΣW j ≤ 0, the tilt angle adjustment does not take effect;

[0014] Wherein, α is the set global adjustment coefficient, β is the set coupling coefficient between adjacent photovoltaic arrays; W i is the change in luminous intensity of the adjusted photovoltaic array; W j is the change in luminous intensity of the photovoltaic array adjacent to the adjusted photovoltaic array; ΣW j is the sum of the changes in luminous intensity of all photovoltaic arrays adjacent to the adjusted photovoltaic array; when α > β, the individual adjustment priority is emphasized; when β > α, the group influence priority is emphasized.

[0015] In one embodiment, the setting of the global adjustment coefficient and the coupling coefficient between adjacent photovoltaic arrays needs to meet the following conditions: α + β = 1 and 0.3 ≤ α ≤ 0.7.

[0016] In one embodiment, the simultaneous tilt angle adjustment of multiple spaced photovoltaic arrays is carried out under the abnormal adjustment protection conditions of the photovoltaic array; the abnormal adjustment protection conditions of the photovoltaic array are as follows:

[0017] The cumulative adjustment times of a single photovoltaic array within 24 hours ≥ 20 - 50 times, and the automatic adjustment of this photovoltaic array on the same day is stopped;

[0018] If the variance of the luminescence intensity of the phosphorescent markers of any two wavelengths of a single photovoltaic array suddenly increases by more than 5 to 10 times the baseline value, it is determined that the signal is abnormal during this period. There may be light intensity differences caused by clouds passing by or other environments, and the photovoltaic array will not be automatically adjusted within 10 to 60 minutes.

[0019] In one embodiment, the baseline value is the average value of the luminescence intensities of the phosphorescent markers of four wavelengths of the photovoltaic array calculated based on the history within the previous 60 minutes.

[0020] In one embodiment, the phosphorescent markers on each photovoltaic array include blue, green, red, and yellow luminescent materials coated on the photovoltaic array;

[0021] The sum of the luminescence intensity changes of all photovoltaic arrays adjacent to the adjusted photovoltaic array and the luminescence intensity change of the adjusted photovoltaic array are obtained according to the digital light intensity modules provided on the phosphorescent markers of each photovoltaic array.

[0022] The present invention also provides a photovoltaic array population cooperative regulation system based on phosphorescence intensity feedback, including a distribution position confirmation module, an inclination angle adjustment module, and a judgment module;

[0023] The distribution position confirmation module is used to construct a three-dimensional coordinate map of the photovoltaic area, obtain the distribution positions of each photovoltaic array in the photovoltaic area, and determine the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays;

[0024] The inclination angle adjustment module is used to simultaneously adjust the inclination angles of multiple spaced photovoltaic arrays. Based on the phosphorescent markers on each photovoltaic array and the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays, the sum of the luminescence intensity changes of all photovoltaic arrays adjacent to the adjusted photovoltaic array and the luminescence intensity change of the adjusted photovoltaic array are obtained;

[0025] The judgment module is used to perform population cooperative judgment by combining the set global adjustment coefficient and the set coupling coefficient between adjacent photovoltaic arrays to judge whether the inclination angle adjustment takes effect. When the inclination angle adjustment does not take effect, it returns to the original position. When the inclination angle adjustment takes effect, it maintains the inclination angle adjustment, returns to the inclination angle adjustment module, and adjusts other unadjusted photovoltaic arrays in this round until all photovoltaic arrays are adjusted, and then proceeds to the next round of adjustment.

[0026] In one embodiment, in the judgment module, the process of performing population cooperative judgment by combining the set global adjustment coefficient and the set coupling coefficient between adjacent photovoltaic arrays to judge whether the inclination angle adjustment takes effect is as follows:

[0027] When α·W i +β·ΣW j > 0, the inclination angle adjustment takes effect;

[0028] When α·W i +β·ΣW j ≤0, the inclination angle adjustment does not take effect;

[0029] where α is the set global adjustment coefficient, β is the set coupling coefficient between adjacent photovoltaic arrays; W i is the change in the luminous intensity of the photovoltaic array to be adjusted; W j is the change in the luminous intensity of the photovoltaic array adjacent to the photovoltaic array to be adjusted; ΣW j is the sum of the changes in the luminous intensities of all photovoltaic arrays adjacent to the photovoltaic array to be adjusted; when α > β, the priority of individual adjustment is emphasized; when β > α, the priority of group influence is emphasized.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention provides a method for collaborative regulation of a group of photovoltaic arrays based on phosphorescence intensity feedback. Compared with the prior art, it can effectively solve the problem of mutual shading caused by independent adjustment of photovoltaic panels. In the traditional scheme, the photovoltaic arrays in mountainous areas are arranged closely, and a single photovoltaic panel relies on the electrical signal of a photosensitive sensor or a preset time program for adjustment, which is prone to shadow occlusion caused by angle conflicts between adjacent panels, resulting in a decrease in the overall power generation efficiency. However, in this method, the light-receiving situation of the photovoltaic arrays is real-time fed back through the phosphorescence markers of each photovoltaic array, combined with sequential regulation of a single array, the inclination angles of the photovoltaic arrays in the area are respectively adjusted, and a judgment module is used to withdraw the inclination angle adjustment that cannot increase the overall efficiency, reducing the power generation capacity loss caused by the inclination angle adjustment, especially suitable for scenarios with undulating terrain and dense arrays. Secondly, the regulation system of the present invention greatly improves the adjustment reliability through the cooperation of the phosphorescence markers of the photovoltaic arrays, the inclination angle adjustment and the judgment module. The traditional system relies on electrical signals or preset time programs for adjustment, which has delays and cannot sense the actual occlusion situation, while this method directly judges the light-receiving state in real time through the change in luminous intensity, realizing fast group collaborative regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 FIG. is a diagram of a method for collaborative regulation of a group of photovoltaic arrays based on phosphorescence intensity feedback provided by an embodiment of the present invention;

[0033] Figure 2 FIG. is a schematic diagram of a system for collaborative regulation of a group of photovoltaic arrays based on phosphorescence intensity feedback provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0034] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned accompanying drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0036] The present invention provides a method for collaborative regulation of a photovoltaic array population based on phosphorescence imaging feedback. Phosphorescent markers with different specific wavelengths are set at the four corners of the photovoltaic array to provide anti-interference photoluminescence performance, and digital light intensity modules are installed at the four corners to obtain digital signals of the light intensity at these points in real time. The distribution positions of each photovoltaic array in the photovoltaic area are obtained through an industrial camera, and the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays is determined. This method realizes the successive and overall collaborative adjustment of the photovoltaic array through the process of "phosphorescent marker - tilt angle adjustment - light intensity change to judge the rationality of tilt angle adjustment". It is especially suitable for scenarios with complex terrain or variable light, and can reduce power generation losses and maintenance costs caused by adjustment mismatch.

[0037] The following further describes the present invention in detail with reference to the accompanying drawings:

[0038] See Figure 1 , in one embodiment, a method for collaborative regulation of a photovoltaic array population based on phosphorescence intensity feedback is provided as follows:

[0039] Step 1: Construction of a three-dimensional coordinate map of the photovoltaic area, with phosphorescent markers set on the photovoltaic array;

[0040] Step 2: Adjust the tilt angle of photovoltaic array P i Adjust the tilt angle of photovoltaic array P i The tilt angle adjustment is carried out under an abnormal adjustment protection module;

[0041] Step 3: Group collaborative judgment and adjustment. When the inclination angle adjustment fails, return to the original position; when the inclination angle adjustment takes effect, maintain the inclination angle adjustment.

[0042] Step 4: Return to Step 2 to adjust the other unadjusted photovoltaic arrays in this round until all photovoltaic arrays are adjusted, and then proceed to the next round of adjustment.

[0043] This embodiment provides a method for group collaborative regulation of photovoltaic arrays based on phosphorescence intensity feedback, including the following steps:

[0044] Step 1: Construction of a three-dimensional coordinate map of the photovoltaic area. Deploy a single industrial camera at a location that can cover the target area of the photovoltaic arrays to be adjusted. Use the industrial camera to obtain images of the target area of the photovoltaic arrays to be adjusted, obtain the distribution positions of each photovoltaic array in the photovoltaic area, construct a distribution position map of each photovoltaic array, and determine the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays, providing a means for judging the adjacent relationship of the photovoltaic arrays in Step 2.

[0045] Each photovoltaic array is provided with a phosphorescent marker. Specifically, blue, green, red, and yellow luminescent materials (without order restrictions) are coated at the four corners of each of the above-mentioned photovoltaic arrays, and a digital light intensity module is installed on the phosphorescent marker. The digital light intensity module is connected to the front-end interface to achieve real-time light intensity feedback and obtain the luminescence intensity of each photovoltaic array. The luminescence intensity of the phosphorescent marker is positively correlated with the light intensity.

[0046] Step 2: Inclination adjustment of the photovoltaic array P i Adjust the inclination angle. At the same time, adjust the inclination angles of multiple spaced photovoltaic arrays. Based on the phosphorescent markers on each photovoltaic array and the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays, obtain the sum of the luminescence intensity changes of all photovoltaic arrays adjacent to the adjusted photovoltaic array and the luminescence intensity change of the adjusted photovoltaic array.

[0047] According to the images of the target area of the photovoltaic arrays to be adjusted obtained by the industrial camera, record the luminescence intensity data of the four luminescent materials on each photovoltaic array.

[0048] When the inclination angle of each group of photovoltaic arrays is adjusted, it will be accompanied by a change in the sum of the luminescence intensities of the four luminescent materials (phosphorescent markers) on itself. Denote the differences between the luminescence intensities of each adjusted photovoltaic array after adjustment and the initial luminescence intensities of each adjusted photovoltaic array before adjustment as the luminescence intensity change W i of the adjusted photovoltaic array P i and the sum ΣW i of the luminescence intensity changes of all photovoltaic arrays ΣP j adjacent to the adjusted photovoltaic array P j .

[0049] The inclination angle of the i-th photovoltaic array to be adjusted is θ i . The inclination angle θi The adjusted value range is 0 to 5° (θ i ≠0). i = 1, 2, 3…, n, where i is the number of the photovoltaic array, and n represents the total number of n photovoltaic arrays.

[0050] Meanwhile, multiple groups of spaced photovoltaic arrays P can be adjusted i , and for each group of photovoltaic arrays P i the adjacent photovoltaic arrays P j are not the same to avoid simultaneous influence. That is, two photovoltaic arrays adjusted in the same batch need to meet the following conditions: the adjacent photovoltaic arrays of the two photovoltaic arrays do not overlap, that is, there are at least 2 groups of photovoltaic arrays separated between the two groups of photovoltaic arrays adjusted in the same batch.

[0051] For the photovoltaic array P i after adjusting the tilt angle θi, based on the phosphor markings on each photovoltaic array and the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays, the sum of the luminous intensity changes ΣW i of all adjacent photovoltaic arrays ΣP j to the adjusted photovoltaic array P j is obtained, as well as the luminous intensity change W i of the adjusted photovoltaic array P i .

[0052] Among them, P i (i = 1, 2, 3....) represents the i-th photovoltaic array in the entire photovoltaic array area; P j is the adjacent photovoltaic array to the adjusted photovoltaic array P i ; ΣP j (j = 1, 2, 3....) represents all photovoltaic arrays adjacent to the photovoltaic array P i ;

[0053] W i is the difference between the sum of the luminous intensities of the four-color luminescent material after adjustment of the i-th photovoltaic array and the sum of the luminous intensities of the four-color luminescent material before adjustment of the i-th photovoltaic array, that is, W i is the luminous intensity change of the adjusted photovoltaic array P i ;

[0054] W j is the difference between the sum of the luminous intensities of the four-color luminescent material after adjustment of the photovoltaic array P adjacent to the adjusted photovoltaic array P i and the sum of the luminous intensities of the four-color luminescent material before adjustment, that is, W j is the luminous intensity change of the photovoltaic array P adjacent to the adjusted photovoltaic array P j ; i adjacent to the adjusted photovoltaic array P j ;

[0055] ΣW j is when the photovoltaic array P is adjustedi When the inclination angle changes, it is related to adjusting the photovoltaic array P i The sum of the changes in the luminous intensity of all adjacent photovoltaic arrays ΣP j of.

[0056] Step 2 is carried out under the abnormal adjustment protection conditions of the photovoltaic array. The abnormal adjustment protection conditions of the photovoltaic array are as follows:

[0057] When the following situations are detected, the protection protocol is triggered: 1) The cumulative adjustment times of a single array within 24 hours ≥ 20 - 50 times, and the automatic angle adjustment of this photovoltaic array on the same day is stopped; or 2) The variance of the luminous intensity of the phosphorescent markers of any two wavelengths of a single array suddenly increases by more than 5 - 10 times the baseline value, then it is determined that the signal is abnormal during this period, and there may be light intensity differences caused by passing clouds or other environments. The angle of this photovoltaic array is not automatically adjusted within 10 min - 60 min.

[0058] Among them, the baseline value is the average value of the luminous intensity of the phosphorescent markers of four wavelengths of this photovoltaic array calculated based on the history within the previous 60 minutes.

[0059] Step 3: Group collaborative judgment and adjustment. Then, combined with setting the global adjustment coefficient and the coupling coefficient between adjacent photovoltaic arrays, group collaborative judgment is carried out to determine whether the inclination angle adjustment takes effect. When the inclination angle adjustment does not take effect, it returns to the original position. When the inclination angle adjustment takes effect, the inclination angle adjustment is maintained, and step 2 is returned to adjust the other unadjusted photovoltaic arrays in this round until all photovoltaic arrays are adjusted, and the next round of adjustment is carried out.

[0060] When α·W i +β·ΣW j > 0, this inclination angle adjustment takes effect, and other photovoltaic arrays are adjusted;

[0061] When α·W i +β·ΣW j ≤ 0, this inclination angle adjustment does not take effect, and other photovoltaic arrays are adjusted;

[0062] Among them, α is the set global adjustment coefficient, which is the weight for maximizing its own light intensity. When α > β, the priority of individual adjustment is emphasized. β is the set coupling coefficient between adjacent photovoltaic arrays. When β > α, the priority of group influence is emphasized.

[0063] The settings of α and β need to meet the following conditions: 1) α + β = 1; 2) 0.3 ≤ α ≤ 0.7, to ensure that the set global adjustment coefficient is close to the set coupling coefficient between adjacent photovoltaic arrays, and to avoid the situation that the group coupling adjustment fails due to too large a set global adjustment coefficient or the situation that the change of a single array itself is ignored due to too large a set coupling coefficient between adjacent photovoltaic arrays.

[0064] Return to Step 2, adjust other photovoltaic arrays until all photovoltaic arrays are adjusted, and then proceed to the next round of adjustment.

[0065] In a specific embodiment, there are 200 groups of photovoltaic arrays in a mountain photovoltaic power station, which are arranged closely. The numbers are P1 to P 200 .

[0066] Phosphorescent marker setting: Coat blue, green, red, and yellow luminescent materials (without order restriction) at the four corners of each photovoltaic array, and install a digital light intensity module, which is connected to the processing system to achieve real-time light intensity feedback.

[0067] Step 1: Construct a three-dimensional coordinate map of the photovoltaic area. Deploy a single industrial camera at the area that can cover the target-adjusted photovoltaic array area. Use the industrial camera to obtain images of the target-adjusted photovoltaic array area, and construct a distribution position map of each photovoltaic array, providing a means for judging the adjacent relationship of the photovoltaic arrays for Step 2.

[0068] Step 2: Adjust the inclination angle of photovoltaic arrays P 16 , P 56 , P 112 . According to the images of the target-adjusted photovoltaic array area obtained by the industrial camera, record the light intensity data of the four luminescent materials on each photovoltaic array. When the inclination angle of each group of photovoltaic arrays is adjusted, it will be accompanied by a change in the sum of the light intensities of the four luminescent materials on itself. Denote the change in light intensity of the adjusted photovoltaic array P i as W i and the sum of the changes in light intensity ΣW i of all the photovoltaic arrays ΣP j adjacent to the adjusted photovoltaic array P j . The adjusted inclination angle θi has a value range of ±1°. α takes the value of 0.3, and β takes the value of 0.7.

[0069] Step 3: Group collaborative adjustment. After the inclination angle of photovoltaic array P i is adjusted by 1°, obtain the sum of the changes in light intensity ΣW i of all the photovoltaic arrays ΣP j adjacent to the adjusted photovoltaic array P j .

[0070] When the photovoltaic array P 16 is adjusted by +1°, for the 3 adjacent photovoltaic panels P 15 , P 17 , P 18 , if W 16 = 3000, W 15 = -300, W 17 = -500, W 18 = -200, then ΣW j = W 16 + W17 +W 18 = -1000. α·W i +β·ΣW j = 0.3·3000 + 0.7·(-1000) = 200 > 0, the tilt adjustment takes effect;

[0071] Photovoltaic array P 56 is adjusted by +1°, for 4 adjacent photovoltaic panels P of the photovoltaic array 55 , P 58 , P 60 , P 61 , W 56 = 2500, W 55 = -600, W 58 = 200, W 60 = 200, W 61 = -300, then ΣW j = W 55 +W 58 +W 60 +W 61 = -500. α·W i +β·ΣW j = 0.3·2500 + 0.7·(-500) = 400 > 0, the tilt adjustment takes effect;

[0072] Photovoltaic array P 112 is adjusted by +1°, for 2 adjacent photovoltaic panels P of the photovoltaic array 108 , P 109 , W 56 = 2000, W 108 = -600, W 109 = -1200, then ΣW j = W 108 +W 109 = -1500. α·W i +β·ΣW j = 0.3·2000 + 0.7·(-1800) = -660 < 0, the tilt adjustment does not take effect, restore to the original position;

[0073] Subsequently, enter the next round, adjust other photovoltaic arrays, and the single-round adjustment takes 23 minutes.

[0074] The abnormal adjustment protection conditions for the photovoltaic array are as follows: When the following situations are detected, the protection protocol is triggered. 1) If the cumulative number of adjustments of a single array within 24 hours ≥ 50 times, the automatic angle adjustment of the photovoltaic array on the same day is stopped. A total of 16 photovoltaic arrays had their adjustment stopped on the same day. 2) If the variance of the luminescence intensities of the phosphorescent markers of any two wavelengths of a single array suddenly increases by more than 5 times the baseline value, it is determined that the signal is abnormal during this period, and there may be light intensity differences caused by passing clouds or other environments. The angle of the photovoltaic array is not automatically adjusted within 10 minutes. On the same day, 52 photovoltaic arrays triggered this protection.

[0075] In a specific embodiment, there are 150 groups of photovoltaic arrays in a mountain photovoltaic power station, which are arranged closely. The numbers are P1 to P 150 。

[0076] Phosphorescent marker setting: Coat blue, green, red, and yellow luminescent materials (without order restriction) at the four corners of each photovoltaic array, and install a digital light intensity module, which is connected to the processing system to achieve real-time light intensity feedback.

[0077] Step 1: Construction of the three-dimensional coordinate map of the photovoltaic area. Deploy a single industrial camera at a location that can cover the target-adjustable photovoltaic array area. Use the industrial camera to obtain the image of the target-adjustable photovoltaic array area and construct a distribution position map of each photovoltaic array, which provides a means for judging the adjacent relationship of the photovoltaic arrays in Step 2.

[0078] Step 2: Adjust the inclination angles of photovoltaic arrays P2, P 24 、P 100 。 According to the image of the target-adjustable photovoltaic array area obtained by the industrial camera, record the luminescence intensity data of the four luminescent materials on each photovoltaic array. When the inclination angle of each group of photovoltaic arrays is adjusted, it will be accompanied by a change in the sum of the luminescence intensities of the four luminescent materials on itself. Denote the change in luminescence intensity of the adjusted photovoltaic array P i as W i and the sum of the changes in luminescence intensity of all adjacent photovoltaic arrays ΣP i to the adjusted photovoltaic array P j as ΣW j . The adjusted inclination angle θi has a value range of ±5°. α takes the value of 0.7, and β takes the value of 0.3.

[0079] Step 3: Group collaborative adjustment. After the inclination angle of the photovoltaic array Pi is adjusted by 3°, obtain the sum of the changes in luminescence intensity ΣW i of all adjacent photovoltaic arrays ΣP j to the adjusted photovoltaic array P j .

[0080] The photovoltaic array P2 is adjusted by -5°. For 5 adjacent photovoltaic panels P1, P3, P4, P5, P6 of the photovoltaic array, W2 = 300, W1 = -100, W3 = -200, W4 = -100, W5 = 200, W6 = 300, then ΣW j = W1 + W3 + W4 + W5 + W6 = 100. α·W i + β·ΣW j = 0.7·300 + 0.3·(100) = 180 > 0, and this inclination adjustment takes effect;

[0081] The photovoltaic array P 24 is adjusted by +5°. For 3 adjacent photovoltaic panels P 23 , P 25 , P 26 , W 24 = -200, W 23 = -300, W 25 = 500, W 26 = 300, then ΣW j = W 23 + W 25 + W 26 = 500. α·W i + β·ΣW j = 0.7·(-200) + 0.3·500 = 10 > 0, and this inclination adjustment takes effect;

[0082] The photovoltaic array P 100 is adjusted by +5°. For 2 adjacent photovoltaic panels P 101 , P 97 , W 100 = 500, W 97 = -900, W 101 = -800, then ΣW j = W 97 + W 101 = -1700. α·W i + β·ΣW j = 0.7·500 + 0.3·(-1700) = -160 < 0, and this inclination adjustment does not take effect, and it returns to the original position;

[0083] Subsequently, it enters the next round to adjust other photovoltaic arrays, and the single-round adjustment takes 15 minutes.

[0084] The abnormal adjustment protection conditions for the photovoltaic array are as follows: When the following situations are detected, the protection protocol is triggered. 1) If the cumulative number of adjustments of a single array within 24 hours ≥ 20 times, the automatic angle adjustment of the photovoltaic array on the same day is stopped, and a total of 52 photovoltaic arrays were stopped from being adjusted on the same day. 2) If the variance of the luminescence intensities of the phosphorescent markers of any two wavelengths of a single array suddenly increases by more than 10 times the baseline value, it is determined that the signal is abnormal during this period, and there may be light intensity differences caused by passing clouds or other environments. The angle of the photovoltaic array is not automatically adjusted within 60 minutes. Five photovoltaic arrays triggered this protection on the same day.

[0085] In one embodiment, as Figure 2 shown, a group cooperative regulation system for a photovoltaic array based on phosphorescence intensity feedback is provided. The system includes a distribution position confirmation module, an inclination angle adjustment module, and a judgment module;

[0086] The distribution position confirmation module is used to construct a three-dimensional coordinate map of the photovoltaic area, obtain the distribution positions of each photovoltaic array in the photovoltaic area, and determine the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays;

[0087] The inclination angle adjustment module is used to simultaneously adjust the inclination angles of multiple spaced photovoltaic arrays. Based on the phosphorescent markers on each photovoltaic array and the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays, obtain the sum of the luminescence intensity changes of all photovoltaic arrays adjacent to the adjusted photovoltaic array and the luminescence intensity change of the adjusted photovoltaic array;

[0088] The judgment module is used to perform group cooperative judgment by combining the set global adjustment coefficient and the set coupling coefficient between adjacent photovoltaic arrays to judge whether the inclination angle adjustment takes effect. When the inclination angle adjustment does not take effect, it returns to the original position. When the inclination angle adjustment takes effect, it maintains the inclination angle adjustment, returns to the inclination angle adjustment module, and adjusts the other unadjusted photovoltaic arrays in this round until all photovoltaic arrays are adjusted, and then proceeds to the next round of adjustment.

[0089] In the above judgment module, the process of performing group cooperative judgment by combining the set global adjustment coefficient and the set coupling coefficient between adjacent photovoltaic arrays to judge whether the inclination angle adjustment takes effect is as follows:

[0090] When α·W i +β·ΣW j > 0, the inclination angle adjustment takes effect;

[0091] When α·W i +β·ΣW j ≤ 0, the inclination angle adjustment does not take effect;

[0092] where α is the set global adjustment coefficient, β is the set coupling coefficient between adjacent photovoltaic arrays; W iTo adjust the change in luminous intensity of the photovoltaic array; W j To adjust the change in luminous intensity of the adjacent photovoltaic arrays of the photovoltaic array; ΣW j It is the sum of the changes in luminous intensity of all the adjacent photovoltaic arrays of the photovoltaic array to be adjusted; when α > β, the individual adjustment priority is emphasized; when β > α, the group influence priority is emphasized.

[0093] The above content is only to illustrate the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A photovoltaic array population cooperative regulation method based on phosphorescence intensity feedback, characterized in that, It includes the following steps: S1: Construct a three-dimensional coordinate map of the photovoltaic area, obtain the distribution positions of each photovoltaic array in the photovoltaic area, and determine the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays; S2: Adjust the inclination angles of multiple spaced photovoltaic arrays simultaneously. Based on the phosphorescent markers on each photovoltaic array and the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays, obtain the sum of the luminous intensity changes of all photovoltaic arrays adjacent to the adjusted photovoltaic arrays and the luminous intensity change of the adjusted photovoltaic array; S3: Then, combine the set global adjustment coefficient and the set coupling coefficient between adjacent photovoltaic arrays to perform a group cooperation judgment to determine whether the inclination angle adjustment takes effect. When the inclination angle adjustment does not take effect, return to the original position. When the inclination angle adjustment takes effect, maintain the inclination angle adjustment, return to S2, and adjust the other unadjusted photovoltaic arrays in this round until all photovoltaic arrays are adjusted, and then proceed to the next round of adjustment.

2. The method for group cooperative regulation of a photovoltaic array based on phosphorescence intensity feedback according to claim 1, wherein There are at least 2 unadjusted photovoltaic arrays spaced between the multiple spaced photovoltaic arrays.

3. A method for collaborative regulation of a photovoltaic array population based on phosphorescence intensity feedback according to claim 1, characterized in that, The inclination angle θ i has an adjustment range of 0 to 5°, and θ i ≠ 0.

4. A photovoltaic array population collaborative regulation method based on phosphorescence intensity feedback according to claim 1, characterized in that The process of combining the set global adjustment coefficient and the set coupling coefficient between adjacent photovoltaic arrays to perform a group cooperation judgment to determine whether the inclination angle adjustment takes effect is as follows: When α·W i +β·ΣW j > 0, the inclination angle adjustment takes effect; When α·W i +β·ΣW j ≤ 0, the inclination angle adjustment does not take effect; Among them, α is the set global adjustment coefficient, and β is the set coupling coefficient between adjacent photovoltaic arrays; W i is for adjusting the change in the light emission intensity of the photovoltaic array; W j is for adjusting the change in the light emission intensity of the photovoltaic array adjacent to the adjusted photovoltaic array; ΣW j is the sum of the changes in the light emission intensities of all photovoltaic arrays adjacent to the adjusted photovoltaic array; when α > β, the individual adjustment priority is emphasized; when β > α, the group influence priority is emphasized.

5. A method for collaborative regulation of a photovoltaic array population based on phosphorescence intensity feedback according to claim 4, characterized in that The settings of the set global adjustment coefficient and the set coupling coefficient between adjacent photovoltaic arrays need to meet the following conditions: α + β = 1 and 0.3 ≤ α ≤ 0.

7.

6. The photovoltaic array population collaborative regulation method based on phosphorescence intensity feedback according to claim 1, wherein The simultaneous adjustment of the inclination angles of multiple spaced photovoltaic arrays is carried out under the abnormal adjustment protection conditions of the photovoltaic arrays; the abnormal adjustment protection conditions of the photovoltaic arrays are as follows: If the cumulative number of adjustments of a single photovoltaic array within 24 hours ≥ 20 - 50 times, stop the automatic adjustment of this photovoltaic array on the same day; Or if the variance of the luminous intensities of the phosphorescent markers of any two wavelengths of a single photovoltaic array suddenly increases by more than 5 - 10 times the baseline value, it is determined that the signal is abnormal during this period, and there may be light intensity differences caused by passing clouds or other environments. Do not perform automatic adjustment on this photovoltaic array within 10 - 60 minutes.

7. A method for collaborative regulation of a photovoltaic array population based on phosphorescence intensity feedback according to claim 6, characterized in that, The baseline value is the average value of the luminous intensities of the phosphorescent markers of four wavelengths of this photovoltaic array calculated based on the history within the previous 60 minutes.

8. A method for collaborative regulation of a photovoltaic array population based on phosphorescence intensity feedback according to claim 1, characterized in that The phosphorescent markers on each photovoltaic array include blue, green, red, and yellow luminescent materials coated on the photovoltaic array; The sum of the luminous intensity changes of all photovoltaic arrays adjacent to the adjusted photovoltaic array and the luminous intensity change of the adjusted photovoltaic array are obtained according to the digital light intensity modules provided on the phosphorescent markers of each photovoltaic array.

9. A photovoltaic array population collaborative regulation system based on phosphorescence intensity feedback, characterized in that, It includes a distribution position confirmation module, an inclination angle adjustment module, and a judgment module; The distribution position confirmation module is used to construct a three-dimensional coordinate map of the photovoltaic area, obtain the distribution positions of each photovoltaic array in the photovoltaic area, and determine the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays; The inclination angle adjustment module is used to simultaneously adjust the inclination angles of multiple spaced photovoltaic arrays. Based on the phosphorescent markers on each photovoltaic array and the positional relationship between each photovoltaic array and its adjacent photovoltaic arrays, obtain the sum of the luminous intensity changes of all photovoltaic arrays adjacent to the adjusted photovoltaic array and the luminous intensity change of the adjusted photovoltaic array; The judgment module is used to perform group collaborative judgment by combining the set global adjustment coefficient and the set coupling coefficient between adjacent photovoltaic arrays to determine whether the inclination angle adjustment takes effect. When the inclination angle adjustment does not take effect, it returns to the original position. When the inclination angle adjustment takes effect, it maintains the inclination angle adjustment, returns to the inclination angle adjustment module, and adjusts other unadjusted photovoltaic arrays in this round until all photovoltaic arrays are adjusted, and then proceeds to the next round of adjustment.

10. The photovoltaic array population collaborative control system based on phosphorescence intensity feedback according to claim 9, characterized in that In the judgment module, the process of performing group collaborative judgment by combining the set global adjustment coefficient and the set coupling coefficient between adjacent photovoltaic arrays to determine whether the inclination angle adjustment takes effect is as follows: When α·W i +β·ΣW j > 0, the inclination angle adjustment takes effect; When α·W i + β·ΣW j ≤ 0, the inclination angle adjustment does not take effect; Among them, α is the set global adjustment coefficient, and β is the set coupling coefficient between adjacent photovoltaic arrays; W i is for adjusting the change in the light emission intensity of the photovoltaic array; W j is for adjusting the change in the light emission intensity of the photovoltaic array adjacent to the adjusted photovoltaic array; ΣW j is the sum of the changes in the light emission intensities of all photovoltaic arrays adjacent to the adjusted photovoltaic array; when α > β, the individual adjustment priority is emphasized; when β > α, the group influence priority is emphasized.

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