CN115913104B - Photovoltaic power generation device based on tracking control system - Google Patents
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Abstract
The application provides a photovoltaic power generation device based on a tracking control system, which comprises: the tracking detection module is used for tracking and detecting external light according to a plurality of photosensitive sensors arranged on each photovoltaic module to obtain an external light array corresponding to the photovoltaic module; the information acquisition module is used for acquiring current and voltage information of each photovoltaic module and constructing a photovoltaic curve corresponding to the acquisition time according to the current and voltage information; the curve comparison module is used for predicting an optimal curve corresponding to the acquisition time according to the photovoltaic analysis model and comparing the optimal curve with the photovoltaic curve; and the tracking control module is used for acquiring a tracking control instruction according to the comparison result and the external light array and controlling and adjusting the corresponding photovoltaic module. Through tracking detection and curve comparison of external light, effective control adjustment of the photovoltaic module can be realized, the maximum efficiency of receiving sunlight is ensured, the utilization of the sunlight is improved, and the photovoltaic efficiency of the photovoltaic power generation device is ensured.
Description
Technical Field
The application relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation device based on a tracking control system.
Background
Photovoltaic power generation systems (photovoltaics), simply referred to as photovoltaics, refer to power generation systems that utilize the photovoltaic effect of photovoltaic cells to directly convert solar radiation energy into electrical energy.
With the development of modern industry, the global energy crisis and the atmospheric pollution are increasingly outstanding, new energy industry is vigorously developed, solar energy is increasingly valued and applied as an ideal clean energy, and a photovoltaic power station is built on a large scale in order to improve the generated energy.
At present, in the process of building a photovoltaic power station, a solar panel is generally fixedly arranged at a certain position and always receives sunlight according to an inherent angle, which clearly greatly reduces the utilization of the sunlight.
Therefore, the application provides a photovoltaic power generation device based on a tracking control system.
Disclosure of Invention
The application provides a photovoltaic power generation device based on a tracking control system, which is used for realizing effective control and adjustment of a photovoltaic module through tracking detection and curve comparison of external light, ensuring the maximum efficiency of receiving sunlight, improving the utilization of the sunlight and ensuring the photovoltaic efficiency of the photovoltaic power generation device.
The application provides a photovoltaic power generation device based on a tracking control system, which comprises:
the tracking detection module is used for tracking and detecting external light according to a plurality of photosensitive sensors arranged on each photovoltaic module to obtain an external light array corresponding to the photovoltaic module;
the information acquisition module is used for acquiring current and voltage information of each photovoltaic module and constructing a photovoltaic curve corresponding to the acquisition time according to the current and voltage information;
the curve comparison module is used for predicting an optimal curve corresponding to the acquisition time according to a photovoltaic analysis model and comparing the optimal curve with a photovoltaic curve;
and the tracking control module is used for acquiring a tracking control instruction according to the comparison result and the external light array and controlling and adjusting the corresponding photovoltaic module.
Preferably, the method further comprises:
the photovoltaic module capturing module is used for capturing module images of the photovoltaic modules;
the image analysis module is used for inputting the component image into an image rust analysis model to obtain a photovoltaic rust layout and a rust sequence;
the image analysis module is also used for inputting the component images into an image shielding analysis model to obtain photovoltaic shielding distribution and a shielding sequence;
the image analysis module is also used for inputting the component images into an image dust analysis model to obtain photovoltaic dust distribution and a dust sequence;
carrying out hierarchical representation on the rusting sequence, the shielding sequence and the dust sequence on a preset coordinate system consistent with the photovoltaic module;
and the image determining module is used for determining and obtaining a final image of the photovoltaic module based on the hierarchical representation result.
Preferably, the method further comprises:
the illumination list acquisition module is used for determining a first illumination list corresponding to a dust level according to a dust sequence and based on a dust-illumination mapping table, determining a second illumination list corresponding to a rust level according to a rust sequence and based on the rust-illumination mapping table, and determining a third illumination list corresponding to a shielding level according to a shielding sequence and based on the shielding-illumination mapping table;
the change reference module is used for predicting the influence of different weather change conditions on the dust level based on a weather prediction model, obtaining a sequence change set of the dust level, and screening the dust change trend with the highest probability as a change reference of a dust surface corresponding to the dust level;
the change sequence acquisition module is used for determining a change illumination list of the first illumination list based on the change reference and converting the change illumination list into a change sequence;
the first segmentation module is used for carrying out first segmentation on the final image according to the array lines of the photovoltaic module to obtain a segmented image;
the coordinate determining module is used for determining a first coordinate corresponding to the dust sequence, a second coordinate corresponding to the shielding sequence, a third coordinate corresponding to the rusting sequence and a fourth coordinate of the change sequence, and determining a completely overlapped coordinate and a non-overlapped coordinate;
the second segmentation module is used for carrying out secondary segmentation on the segmented image according to the non-overlapping coordinates, the non-fully overlapping coordinates and the fully overlapping coordinates to obtain a sub-image;
the classification analysis module is used for acquiring an illumination list matched with one sequence when the sub-image only comprises the one sequence, so as to obtain first absorbable illumination of the sub-image;
when the sub-image comprises two sequences, acquiring an illumination list matched with the two sequences, and determining second absorbable illumination of the sub-image;
when the sub-image comprises three sequences, acquiring an illumination list matched with the two sequences, and determining a third absorbable illumination of the sub-image;
determining a fourth absorbable light of the sub-image based on the first, second, third, and varying light lists when the sub-image comprises four sequences;
the number determining module is used for determining the set number of the sub-images based on the first absorbable light, the second absorbable light, the third absorbable light, the fourth absorbable light, the image shape of the corresponding sub-image and the image interval between the corresponding sub-image and the adjacent sub-image;
and the reminding installation module is used for reminding to set the corresponding number of photosensitive sensors to the array area corresponding to the corresponding sub-image according to the set number.
Preferably, the tracking detection module includes:
a light acquisition unit for acquiring light detection results of a plurality of light-sensitive sensors provided on each photovoltaic module;
the result filling unit is used for sequentially filling the detection results to the positions corresponding to the device distribution according to the device distribution of the photosensitive sensor;
and the light array acquisition unit is used for combining the component distribution of the photovoltaic component to obtain a corresponding external light array.
Preferably, the information acquisition module includes:
the collecting unit is used for collecting the first current and the first voltage of each photovoltaic module and constructing a first current curve and a first voltage curve in a preset time period;
constructing a photovoltaic curve in a preset time period based on the first current curve and the first voltage curve;
the photovoltaic curve is power dependent.
Preferably, the curve comparison module includes:
the curve comparison unit is used for comparing the photovoltaic curve with an optimal curve obtained under the position angle and judging whether an intersection point exists or not;
if the minimum interval value and the maximum interval value of the photovoltaic curve and the optimal curve are not present, a first lowest point and a first highest point of the photovoltaic curve, and a second lowest point and a second highest point of the optimal curve are obtained;
acquiring a first ratio of the minimum interval value to the maximum interval value and a second ratio of a first difference value between a first lowest point and a second lowest point to a second difference value between a first highest point and a second highest point;
acquiring a fourth ratio of the first ratio to the third ratio, and acquiring first to-be-adjusted information for adjusting the corresponding photovoltaic module according to a first average value of a minimum interval value and a maximum interval value if the fourth ratio is in a preset ratio range;
if the fourth ratio is not in the preset ratio range, obtaining second to-be-adjusted information for adjusting the corresponding photovoltaic module according to a second average value of the first difference value and the second difference value and combining the first average value;
if the intersection points exist, based on the optimal curve and the photovoltaic curve, acquiring a third difference value of each intersection point corresponding to a left time point and a fourth difference value of each intersection point corresponding to a right time point, constructing a value difference array and a positive and negative array of the photovoltaic curve according to the third difference value and the fourth difference value, and acquiring illumination information of each intersection point at corresponding time to obtain an illumination array;
determining a variation deviation value of the value difference array, the illumination array and the positive and negative arrays for each intersection point based on a deviation analysis mechanism;
and extracting the deviation concentrated range of the variation deviation value, and obtaining third to-be-adjusted information for adjusting the corresponding photovoltaic module.
Preferably, the first information to be adjusted, the second information to be adjusted and the third information to be processed are comparison results.
Preferably, the tracking control module includes:
the label setting unit is used for setting a label to be adjusted for each photovoltaic module according to the comparison result;
the scheme obtaining unit is used for obtaining a first adjustment scheme based on the to-be-adjusted tag and the actual maximum light absorption efficiency of each photovoltaic module;
the scheme correction unit is used for correcting the first adjustment scheme based on the external light array and the illumination deflection to obtain a second adjustment scheme;
and the control and adjustment unit is used for acquiring a tracking control instruction matched with the second adjustment scheme and performing control and adjustment on the position and the angle of the integral photovoltaic module.
Preferably, the method further comprises:
the temperature detection module is used for screening a plurality of test points on the corresponding photovoltaic module to perform temperature measurement according to the component influence layout of the photovoltaic module, and obtaining the surface temperature of the corresponding test points;
the possibility determining module is used for obtaining the external temperature based on the test point and the average temperature of the photovoltaic module in the working state, and determining the abnormal possibility of the temperature of the corresponding test point according to the external temperature, the average temperature and the surface temperature;
the number counting module is used for counting the first number of test points, corresponding to the same photovoltaic module, of which the temperature abnormality probability is greater than the preset probability;
when the first number is larger than the preset number, extracting the surface temperature related to the first number, drawing a temperature curve, comparing the temperature difference with the temperature curve drawn by the average temperature and the average temperature of the external temperature, and displaying the position icon representing the photovoltaic module in a saliency mode according to the saliency operation matched with the comparison difference.
Preferably, the control adjustment unit includes:
the structure analysis block is used for carrying out structure analysis on the adjusting structure of the photovoltaic module and determining a first structure capable of being adjusted up and down, a second structure capable of being adjusted left and right and a third structure capable of being adjusted left and right;
a scheme parsing block, configured to parse the second adjustment scheme, and match a first sub-instruction related to the first structure, a second sub-instruction related to the second structure, and a third sub-instruction related to the third structure;
the control adjusting block is used for respectively controlling and adjusting the corresponding structure according to the first sub-instruction, the second sub-instruction and the third sub-instruction.
Compared with the prior art, the application has the following beneficial effects:
through tracking detection and curve comparison of external light, effective control adjustment of the photovoltaic module can be realized, the maximum efficiency of receiving sunlight is ensured, the utilization of the sunlight is improved, and the photovoltaic efficiency of the photovoltaic power generation device is ensured.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the application is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application. In the drawings:
FIG. 1 is a block diagram of a photovoltaic power generation device based on a tracking control system in an embodiment of the present application;
FIG. 2 is a diagram showing the structure of dust distribution in the embodiment of the present application;
fig. 3 is a block diagram of a combination of different structures in an embodiment of the present application.
Detailed Description
The preferred embodiments of the present application will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present application only, and are not intended to limit the present application.
Example 1:
the application provides a photovoltaic power generation device based on a tracking control system, as shown in fig. 1, comprising:
the tracking detection module is used for tracking and detecting external light according to a plurality of photosensitive sensors arranged on each photovoltaic module to obtain an external light array corresponding to the photovoltaic module;
the information acquisition module is used for acquiring current and voltage information of each photovoltaic module and constructing a photovoltaic curve corresponding to the acquisition time according to the current and voltage information;
the curve comparison module is used for predicting an optimal curve corresponding to the acquisition time according to a photovoltaic analysis model and comparing the optimal curve with a photovoltaic curve;
and the tracking control module is used for acquiring a tracking control instruction according to the comparison result and the external light array and controlling and adjusting the corresponding photovoltaic module.
In this embodiment, detecting ambient light refers to the detected ambient light brightness.
In this embodiment, the photovoltaic curve is power dependent.
In this embodiment, the photovoltaic analysis model is preset, and is trained by taking the optimal power corresponding to the collection time as an input sample and taking a curve as an output sample.
In this embodiment, the control adjustment means that the position and angle of the photovoltaic module are adjusted, and is based on the existing infrastructure that can perform functional properties such as up and down, left and right, and rotation.
The beneficial effects of the technical scheme are as follows: through tracking detection and curve comparison of external light, effective control adjustment of the photovoltaic module can be realized, the maximum efficiency of receiving sunlight is ensured, the utilization of the sunlight is improved, and the photovoltaic efficiency of the photovoltaic power generation device is ensured.
Example 2:
based on the embodiment 1, the method further comprises:
the photovoltaic module capturing module is used for capturing module images of the photovoltaic modules;
the image analysis module is used for inputting the component image into an image rust analysis model to obtain a photovoltaic rust layout and a rust sequence;
the image analysis module is also used for inputting the component images into an image shielding analysis model to obtain photovoltaic shielding distribution and a shielding sequence;
the image analysis module is also used for inputting the component images into an image dust analysis model to obtain photovoltaic dust distribution and a dust sequence;
carrying out hierarchical representation on the rusting sequence, the shielding sequence and the dust sequence on a preset coordinate system consistent with the photovoltaic module;
and the image determining module is used for determining and obtaining a final image of the photovoltaic module based on the hierarchical representation result.
In the embodiment, the component image can be obtained through shooting by the camera, and the image rust analysis model, the image shielding analysis model and the image dust analysis model are all preset.
The rust analysis model is used for determining the rust degree of different positions on the image, and the rust sequence comprises the positions and the rust degree.
The image occlusion analysis model and the image dust analysis model are similar in principle to the rust analysis model.
In this embodiment, the hierarchical representation means that finally it comprises: dust level, shelter level and rust level.
The beneficial effects of the technical scheme are as follows: through the analysis of the images by the rust model, the dust model and the shielding model, the corresponding sequence can be effectively obtained, and further the final image can be obtained through different levels of representation, so that the setting of the light surface sensor is convenient, and a foundation is provided for the follow-up improvement of the utilization of sunlight to the greatest extent.
Example 3:
based on the embodiment 2, the method further comprises:
the illumination list acquisition module is used for determining a first illumination list corresponding to a dust level according to a dust sequence and based on a dust-illumination mapping table, determining a second illumination list corresponding to a rust level according to a rust sequence and based on the rust-illumination mapping table, and determining a third illumination list corresponding to a shielding level according to a shielding sequence and based on the shielding-illumination mapping table;
the change reference module is used for predicting the influence of different weather change conditions on the dust level based on a weather prediction model, obtaining a sequence change set of the dust level, and screening the dust change trend with the highest probability as a change reference of a dust surface corresponding to the dust level;
the change sequence acquisition module is used for determining a change illumination list of the first illumination list based on the change reference and converting the change illumination list into a change sequence;
the first segmentation module is used for carrying out first segmentation on the final image according to the array lines of the photovoltaic module to obtain a segmented image;
the coordinate determining module is used for determining a first coordinate corresponding to the dust sequence, a second coordinate corresponding to the shielding sequence, a third coordinate corresponding to the rusting sequence and a fourth coordinate of the change sequence, and determining a completely overlapped coordinate and a non-overlapped coordinate;
the second segmentation module is used for carrying out secondary segmentation on the segmented image according to the non-overlapping coordinates, the non-fully overlapping coordinates and the fully overlapping coordinates to obtain a sub-image;
the classification analysis module is used for acquiring an illumination list matched with one sequence when the sub-image only comprises the one sequence, so as to obtain first absorbable illumination of the sub-image;
when the sub-image comprises two sequences, acquiring an illumination list matched with the two sequences, and determining second absorbable illumination of the sub-image;
when the sub-image comprises three sequences, acquiring an illumination list matched with the two sequences, and determining a third absorbable illumination of the sub-image;
determining a fourth absorbable light of the sub-image based on the first, second, third, and varying light lists when the sub-image comprises four sequences;
the number determining module is used for determining the set number of the sub-images based on the first absorbable light, the second absorbable light, the third absorbable light, the fourth absorbable light, the image shape of the corresponding sub-image and the image interval between the corresponding sub-image and the adjacent sub-image;
and the reminding installation module is used for reminding to set the corresponding number of photosensitive sensors to the array area corresponding to the corresponding sub-image according to the set number.
In this embodiment, the calculation of the set number is as follows:
P2=
P
wherein Y1 represents the set number of the corresponding sub-images;a first value representing that the corresponding sub-image is based on absorbable illumination; />Representing a conversion coefficient to a first value; />2 represents a second value of the corresponding sub-image based on the image shape and the image interval;representing a conversion coefficient to the second value; />A calculation function based on the image shape ss1 and the image interval ss 2; />A first absorbable light representing a corresponding sub-image; />2 represents a second absorbable illumination of the corresponding sub-image; />3 represents a third absorbable illumination of the corresponding sub-image; />4 represents a fourth absorbable illumination of the corresponding sub-image; []Representing a rounding function;
because each sub-image corresponds to one type of absorbable illumination, the absorbable illumination will have a value, and the remaining absorbable illumination is 0.
In this embodiment, the array region refers to a range of contours in which the photosensitive sensor can be disposed corresponding to the sub-image.
In this embodiment, the dust-light mapping table includes dust thickness and absorption of sunlight by the corresponding photovoltaic module after dust of different thickness covers the photovoltaic module, so that a corresponding light list can be determined, and the corresponding light list is rusted and blocked similarly to the above principle.
In this embodiment, as shown in fig. 2, for example, 1 represents the original dust accumulation distribution, 2 represents the predicted dust accumulation distribution, and at this time, a series change set can be acquired.
Since the sequence changes corresponding to different weather changes are different, the screening changes are substantially identical and the number of changes is the largest.
In this embodiment, since the condition of the photovoltaic module absorbing the light is also changed due to the change of the dust accumulation position, the dust change condition is prioritized.
In this embodiment, the sequence of changes refers to the change in the light absorption for the corresponding location point of the dust.
In this embodiment, the array lines are dividing lines provided by the photovoltaic module itself.
In this embodiment, the completely overlapped coordinates refer to the case where four kinds of sequences (dust sequence, rust sequence, shielding sequence, and change sequence) exist on the same coordinates, the completely non-overlapped coordinates refer to the case where only one kind of sequence exists on the same coordinates, and the incompletely overlapped coordinates refer to the case where two or three kinds of sequences exist on the same coordinates, and thus, the re-segmentation can be achieved.
The beneficial effects of the technical scheme are as follows: through confirming the illumination list that different sequences correspond, and then according to the prediction to the dust, can effectually provide effective supplementary for the condition that photovoltaic module absorbed the illumination, and through carrying out the determination of sequence number and the calculation to the setting number of same sub-image to same position, can realize the effective installation to photosensitive sensor, guarantee the follow-up effective utilization to the sunlight.
Example 4:
based on embodiment 1, the tracking detection module includes:
a light acquisition unit for acquiring light detection results of a plurality of light-sensitive sensors provided on each photovoltaic module;
the result filling unit is used for sequentially filling the detection results to the positions corresponding to the device distribution according to the device distribution of the photosensitive sensor;
and the light array acquisition unit is used for combining the component distribution of the photovoltaic component to obtain a corresponding external light array.
The beneficial effects of the technical scheme are as follows: the array frame can be obtained based on component distribution, the settable values on the frame can be determined by determining device distribution, and the external light array can be conveniently obtained by filling the results, so that a foundation is provided for subsequent light utilization.
Example 5:
based on embodiment 1, the information acquisition module includes:
the collecting unit is used for collecting the first current and the first voltage of each photovoltaic module and constructing a first current curve and a first voltage curve in a preset time period;
constructing a photovoltaic curve in a preset time period based on the first current curve and the first voltage curve;
the photovoltaic curve is power dependent.
The beneficial effects of the technical scheme are as follows: by constructing current and voltage curves, the construction of the photovoltaic curve is convenient to ensure, and a foundation is provided for the comparison of the follow-up curves.
Example 6:
based on embodiment 1, the curve comparison module includes:
the curve comparison unit is used for comparing the photovoltaic curve with an optimal curve obtained under the position angle and judging whether an intersection point exists or not;
if the minimum interval value and the maximum interval value of the photovoltaic curve and the optimal curve are not present, a first lowest point and a first highest point of the photovoltaic curve, and a second lowest point and a second highest point of the optimal curve are obtained;
acquiring a first ratio of the minimum interval value to the maximum interval value and a second ratio of a first difference value between a first lowest point and a second lowest point to a second difference value between a first highest point and a second highest point;
acquiring a fourth ratio of the first ratio to the third ratio, and acquiring first to-be-adjusted information for adjusting the corresponding photovoltaic module according to a first average value of a minimum interval value and a maximum interval value if the fourth ratio is in a preset ratio range;
if the fourth ratio is not in the preset ratio range, obtaining second to-be-adjusted information for adjusting the corresponding photovoltaic module according to a second average value of the first difference value and the second difference value and combining the first average value;
if the intersection points exist, based on the optimal curve and the photovoltaic curve, acquiring a third difference value of each intersection point corresponding to a left time point and a fourth difference value of each intersection point corresponding to a right time point, constructing a value difference array and a positive and negative array of the photovoltaic curve according to the third difference value and the fourth difference value, and acquiring illumination information of each intersection point at corresponding time to obtain an illumination array;
determining a variation deviation value of the value difference array, the illumination array and the positive and negative arrays for each intersection point based on a deviation analysis mechanism;
and extracting the deviation concentrated range of the variation deviation value, and obtaining third to-be-adjusted information for adjusting the corresponding photovoltaic module.
Preferably, the first information to be adjusted, the second information to be adjusted and the third information to be processed are comparison results.
In this embodiment, the optimal curve refers to the optimal curve corresponding to the same position and angle.
In this embodiment, T1 represents a minimum interval value, T2 represents a maximum interval value, and T10 represents a first difference between a first lowest point and a second lowest point; t20 represents a second difference between the first highest point and the second highest point;
a first ratio:second ratio: />
In this embodiment, the left time point is, for example, a time point spaced 3 seconds from the intersection, and the right time point is, for example, a time point spaced 3 seconds from the intersection.
In this embodiment, since the third difference value and the fourth difference value have positive and negative values, a value difference array and a positive and negative array can be obtained.
In this embodiment, the illumination array refers to an illumination intensity constitution.
In this embodiment, the deviation centralization range means, for example: there are variations offset values of 0.1, 0.2, 0.8, when the offset concentration ranges from 0.1 to 0.2.
The beneficial effects of the technical scheme are as follows: by means of curve comparison, whether an intersection point exists or not is preliminarily determined, and then the comparison can be carried out according to the discussion of the existence and the nonexistence of the intersection point, when the intersection point does not exist, the obtained values of different positions of the curve are mainly compared, and then information to be adjusted is obtained.
Example 7:
based on embodiment 1, the tracking control module includes:
the label setting unit is used for setting a label to be adjusted for each photovoltaic module according to the comparison result;
the scheme obtaining unit is used for obtaining a first adjustment scheme based on the to-be-adjusted tag and the actual maximum light absorption efficiency of each photovoltaic module;
the scheme correction unit is used for correcting the first adjustment scheme based on the external light array and the illumination deflection to obtain a second adjustment scheme;
and the control and adjustment unit is used for acquiring a tracking control instruction matched with the second adjustment scheme and performing control and adjustment on the position and the angle of the integral photovoltaic module.
In this embodiment, the to-be-tuned tag refers to a tag set by the to-be-tuned information acquired in what mode, and is further used for efficient distinction of the photovoltaic modules.
In this embodiment, the illumination bias refers to the irradiation direction of sunlight.
In this embodiment, the tracking control command is to make a certain angle and a certain height adjustment for the photovoltaic module.
The beneficial effects of the technical scheme are as follows: the adjustment scheme is obtained based on the label to be adjusted and the actual maximum light absorption efficiency, and scheme adjustment is carried out through the external light array and illumination deflection, so that the condition that the light absorption effect is not ideal due to the existence of shadows can be avoided, further, an effective instruction is obtained, control adjustment is realized, and the utilization of sunlight is guaranteed to the greatest extent.
Example 8:
based on the embodiment 1, the method further comprises:
the temperature detection module is used for screening a plurality of test points on the corresponding photovoltaic module to perform temperature measurement according to the component influence layout of the photovoltaic module, and obtaining the surface temperature of the corresponding test points;
the possibility determining module is used for obtaining the external temperature based on the test point and the average temperature of the photovoltaic module in the working state, and determining the abnormal possibility of the temperature of the corresponding test point according to the external temperature, the average temperature and the surface temperature;
the number counting module is used for counting the first number of test points, corresponding to the same photovoltaic module, of which the temperature abnormality probability is greater than the preset probability;
when the first number is larger than the preset number, extracting the surface temperature related to the first number, drawing a temperature curve, comparing the temperature difference with the temperature curve drawn by the average temperature and the average temperature of the external temperature, and displaying the position icon representing the photovoltaic module in a saliency mode according to the saliency operation matched with the comparison difference.
Calculating the temperature abnormality probability Y3 of the corresponding test point:
wherein,representing the surface temperature; />Representing the ambient temperature; />Representing the average temperature; />Indicating the initial temperature of the photovoltaic module.
In this embodiment, the larger the temperature difference, the more complex the corresponding saliency operation, and the more representative the saliency display result.
In this embodiment, the component impact layout is related to dust, shielding, and rust.
Calculating the number of test points:
wherein S represents the total area of the photovoltaic module; s1 represents the rust area of the photovoltaic module; s2 represents the dust area of the photovoltaic module; s3 represents the shielding area of the photovoltaic module;represents an adjustment coefficient based on the rust area; />Representing an adjustment coefficient for the occlusion area; />Representing an adjustment coefficient for the dust area; />Indicating the impact weight for rust; />Representing impact weights for occlusion; />Representing an impact weight for dust; and->=1。[]Representing a rounding function; d represents a setting interval.
The beneficial effects of the technical scheme are as follows: the temperature anomaly possibility of the test points is judged by determining the influence layout of the components, and the temperature anomaly possibility of the components can be effectively displayed by counting the number and comparing the temperature curves, so that the temperature condition of the components is timely known.
Example 9:
based on embodiment 7, the control adjustment unit includes:
the structure analysis block is used for carrying out structure analysis on the adjusting structure of the photovoltaic module and determining a first structure capable of being adjusted up and down, a second structure capable of being adjusted left and right and a third structure capable of being adjusted in a rotating mode;
a scheme parsing block, configured to parse the second adjustment scheme, and match a first sub-instruction related to the first structure, a second sub-instruction related to the second structure, and a third sub-instruction related to the third structure;
the control adjusting block is used for respectively controlling and adjusting the corresponding structure according to the first sub-instruction, the second sub-instruction and the third sub-instruction.
As shown in fig. 3, the first structure 01 is adjusted up and down, the second structure 02 is adjusted left and right, the third structure 03 is adjusted in rotation, 04 denotes a rotating member, 05 denotes an up and down moving member, and 06 denotes a left and right moving member.
In this embodiment, precise control of the photovoltaic module is achieved by matching instructions to different structures, respectively.
The beneficial effects of the technical scheme are as follows: through decomposing the structure and analyzing the instruction, the accurate control of the structure can be effectively realized, and the utilization of light to the greatest extent is ensured.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. A photovoltaic power generation device based on a tracking control system, comprising:
the tracking detection module is used for tracking and detecting external light according to a plurality of photosensitive sensors arranged on each photovoltaic module to obtain an external light array corresponding to the photovoltaic module;
the information acquisition module is used for acquiring current and voltage information of each photovoltaic module and constructing a photovoltaic curve corresponding to the acquisition time according to the current and voltage information;
the curve comparison module is used for predicting an optimal curve corresponding to the acquisition time according to a photovoltaic analysis model and comparing the optimal curve with a photovoltaic curve;
the tracking control module is used for acquiring a tracking control instruction according to the comparison result and the external light array and controlling and adjusting the corresponding photovoltaic module;
wherein, still include:
the temperature detection module is used for screening a plurality of test points on the corresponding photovoltaic module to perform temperature measurement according to the component influence layout of the photovoltaic module, and obtaining the surface temperature of the corresponding test points;
the possibility determining module is used for obtaining the external temperature based on the test point and the average temperature of the photovoltaic module in the working state, and determining the abnormal possibility of the temperature of the corresponding test point according to the external temperature, the average temperature and the surface temperature;
the number counting module is used for counting the first number of test points, corresponding to the same photovoltaic module, of which the temperature abnormality probability is greater than the preset probability;
when the first number is larger than the preset number, extracting the surface temperature related to the first number, drawing a temperature curve, comparing the temperature difference with the temperature curve drawn by the average temperature and the average temperature of the external temperature, and displaying the position icon representing the photovoltaic module in a saliency mode according to the saliency operation matched with the comparison difference;
wherein, calculating the temperature abnormality possibility Y3 of the corresponding test point:
wherein,representing the surface temperature; />Representing the ambient temperature; />Representing the average temperature; />Representing an initial temperature of the photovoltaic module;
the number of test points is calculated:
wherein S represents the total area of the photovoltaic module; s1 represents the rust area of the photovoltaic module; s2 represents the dust area of the photovoltaic module; s3 represents the shielding area of the photovoltaic module;indicating rust area based adjustmentCoefficients; />Representing an adjustment coefficient for the occlusion area; />Representing an adjustment coefficient for the dust area; />Indicating the impact weight for rust; />Representing impact weights for occlusion; />Representing an impact weight for dust; and->=1；[]Representing a rounding function; d represents a setting interval.
2. The tracking control system-based photovoltaic power generation device according to claim 1, further comprising:
the photovoltaic module capturing module is used for capturing module images of the photovoltaic modules;
the image analysis module is used for inputting the component image into an image rust analysis model to obtain a photovoltaic rust layout and a rust sequence;
the image analysis module is also used for inputting the component images into an image shielding analysis model to obtain photovoltaic shielding distribution and a shielding sequence;
the image analysis module is also used for inputting the component images into an image dust analysis model to obtain photovoltaic dust distribution and a dust sequence;
carrying out hierarchical representation on the rusting sequence, the shielding sequence and the dust sequence on a preset coordinate system consistent with the photovoltaic module;
and the image determining module is used for determining and obtaining a final image of the photovoltaic module based on the hierarchical representation result.
3. The tracking control system-based photovoltaic power generation device according to claim 2, further comprising:
the illumination list acquisition module is used for determining a first illumination list corresponding to a dust level according to a dust sequence and based on a dust-illumination mapping table, determining a second illumination list corresponding to a rust level according to a rust sequence and based on the rust-illumination mapping table, and determining a third illumination list corresponding to a shielding level according to a shielding sequence and based on the shielding-illumination mapping table;
the change reference module is used for predicting the influence of different weather change conditions on the dust level based on a weather prediction model, obtaining a sequence change set of the dust level, and screening the dust change trend with the highest probability as a change reference of a dust surface corresponding to the dust level;
the change sequence acquisition module is used for determining a change illumination list of the first illumination list based on the change reference and converting the change illumination list into a change sequence;
the first segmentation module is used for carrying out first segmentation on the final image according to the array lines of the photovoltaic module to obtain a segmented image;
the coordinate determining module is used for determining a first coordinate corresponding to the dust sequence, a second coordinate corresponding to the shielding sequence, a third coordinate corresponding to the rusting sequence and a fourth coordinate of the change sequence, and determining a completely overlapped coordinate and a non-overlapped coordinate;
the second segmentation module is used for carrying out secondary segmentation on the segmented image according to the non-overlapping coordinates, the non-fully overlapping coordinates and the fully overlapping coordinates to obtain a sub-image;
the classification analysis module is used for acquiring an illumination list matched with one sequence when the sub-image only comprises the one sequence, so as to obtain first absorbable illumination of the sub-image;
when the sub-image comprises two sequences, acquiring an illumination list matched with the two sequences, and determining second absorbable illumination of the sub-image;
when the sub-image comprises three sequences, acquiring an illumination list matched with the three sequences, and determining a third absorbable illumination of the sub-image;
determining a fourth absorbable light of the sub-image based on the first, second, third, and varying light lists when the sub-image comprises four sequences;
the number determining module is used for determining the set number of the sub-images based on the first absorbable light, the second absorbable light, the third absorbable light, the fourth absorbable light, the image shape of the corresponding sub-image and the image interval between the corresponding sub-image and the adjacent sub-image;
and the reminding installation module is used for reminding to set the corresponding number of photosensitive sensors to the array area corresponding to the corresponding sub-image according to the set number.
4. The tracking control system-based photovoltaic power generation device according to claim 1, wherein the tracking detection module includes:
the light acquisition unit is used for acquiring light detection results of a plurality of light-sensitive sensors arranged on each photovoltaic module;
the result filling unit is used for sequentially filling the detection results to the positions corresponding to the device distribution according to the device distribution of the photosensitive sensor;
and the light array acquisition unit is used for combining the component distribution of the photovoltaic component to obtain a corresponding external light array.
5. The tracking control system-based photovoltaic power generation device according to claim 1, wherein the information acquisition module comprises:
the collecting unit is used for collecting the first current and the first voltage of each photovoltaic module and constructing a first current curve and a first voltage curve in a preset time period;
constructing a photovoltaic curve in a preset time period based on the first current curve and the first voltage curve;
the photovoltaic curve is power dependent.
6. The tracking control system-based photovoltaic power generation device according to claim 1, wherein the curve comparison module includes:
the curve comparison unit is used for comparing the photovoltaic curve with an optimal curve obtained under the position angle and judging whether an intersection point exists or not;
if the minimum interval value and the maximum interval value of the photovoltaic curve and the optimal curve are not present, a first lowest point and a first highest point of the photovoltaic curve, and a second lowest point and a second highest point of the optimal curve are obtained;
acquiring a first ratio of the minimum interval value to the maximum interval value and a second ratio of a first difference value between a first lowest point and a second lowest point to a second difference value between a first highest point and a second highest point;
acquiring a fourth ratio of the first ratio to the second ratio, and acquiring first to-be-adjusted information for adjusting the corresponding photovoltaic module according to a first average value of a minimum interval value and a maximum interval value if the fourth ratio is in a preset ratio range;
if the fourth ratio is not in the preset ratio range, obtaining second to-be-adjusted information for adjusting the corresponding photovoltaic module according to a second average value of the first difference value and the second difference value and combining the first average value;
if the intersection points exist, based on the optimal curve and the photovoltaic curve, acquiring a third difference value of each intersection point corresponding to a left time point and a fourth difference value of each intersection point corresponding to a right time point, constructing a value difference array and a positive and negative array of the photovoltaic curve according to the third difference value and the fourth difference value, and acquiring illumination information of each intersection point at corresponding time to obtain an illumination array;
determining a variation deviation value of the value difference array, the illumination array and the positive and negative arrays for each intersection point based on a deviation analysis mechanism;
and extracting the deviation concentrated range of the variation deviation value, and obtaining third to-be-adjusted information for adjusting the corresponding photovoltaic module.
7. The photovoltaic power generation device based on the tracking control system according to claim 6,
and the first information to be modulated, the second information to be modulated and the third information to be modulated are comparison results.
8. The tracking control system-based photovoltaic power generation device according to claim 1, wherein the tracking control module comprises:
the label setting unit is used for setting a label to be adjusted for each photovoltaic module according to the comparison result;
the scheme obtaining unit is used for obtaining a first adjustment scheme based on the to-be-adjusted tag and the actual maximum light absorption efficiency of each photovoltaic module;
the scheme correction unit is used for correcting the first adjustment scheme based on the external light array and the illumination deflection to obtain a second adjustment scheme;
and the control and adjustment unit is used for acquiring a tracking control instruction matched with the second adjustment scheme and performing control and adjustment on the position and the angle of the integral photovoltaic module.
9. The photovoltaic power generation device based on the tracking control system according to claim 8,
the control adjustment unit includes:
the structure analysis subunit is used for carrying out structure analysis on the adjusting structure of the photovoltaic module and determining a first structure capable of being adjusted up and down, a second structure capable of being adjusted left and right and a third structure capable of being adjusted in a rotating mode;
a scheme parsing sub-unit, configured to parse the second adjustment scheme, and match a first sub-instruction related to the first structure, a second sub-instruction related to the second structure, and a third sub-instruction related to the third structure;
and the control and adjustment subunit is used for respectively controlling and adjusting the corresponding structure according to the first sub-instruction, the second sub-instruction and the third sub-instruction.
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