Wind erosion prevention method for sand surface in front of desert photovoltaic power station panel

Abstract

The invention discloses a desert photovoltaic power station board front sand surface wind erosion prevention method, which comprises the following steps that: in order to deal with the condition that the difficulty of regular inspection and maintenance of sand barriers in desert areas is large, sand barrier loosening, deformation and board front sand surface erosion parameters are analyzed to obtain a sand barrier damage value; comparing the sand barrier damage value with a sand barrier damage threshold value, judging whether the sand barrier is damaged or not according to a comparison result, and if yes, generating a damage signal; based on the damage signal, analyzing maintenance information of the damaged area to obtain a damage characterization value; comparing the damage characterization value with a damage characterization threshold value, judging whether the corresponding area is a high-frequency damage area or not according to a comparison result, and if yes, generating a high-frequency damage signal; based on the high-frequency damage signal, the relevance between sand barrier damage and stress is analyzed, and a stress relevance value is obtained; and comparing the stress association value with a stress association threshold value, judging whether the sand barrier damage is associated with the stress or not according to a comparison result, if so, generating an association signal, and performing targeted maintenance on the sand barrier.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic sand control, in particular to a method for preventing wind erosion of sand surface in front of panels of a desert photovoltaic power station. Background Art

[0002] With the increasing demand for clean energy, desert areas have become ideal places for building photovoltaic power stations due to their rich solar energy resources. Desert photovoltaic power stations are affected by the wind and sand environment, and the "narrow pipe effect" of the lower airflow caused by the tilted structure of the photovoltaic panels increases the local wind speed, causing sand erosion in front of the photovoltaic panels, changes in the surface morphology, accumulation of quicksand, and local sand blowing. In serious cases, it threatens the stability of the photovoltaic panel foundation, reduces power generation efficiency, and creates great safety hazards in production.

[0003] The present invention provides a method for preventing wind erosion of sand surfaces in front of panels of a desert photovoltaic power station, so as to effectively reduce the erosion of sand by wind on the sand surfaces in front of panels of the photovoltaic power station, and improve the stability and power generation efficiency of the photovoltaic power station; by analyzing whether a sand barrier is loose and the degree of looseness of the sand barrier, whether the sand barrier is damaged, deformed or other faults, and analyzing the effect of the sand barrier in reducing the erosion of the sand surface in front of panels of the photovoltaic power station, it is judged whether the sand barrier is faulty; the faulty sand barrier is repaired, and the repair situation is statistically analyzed; a high-frequency damage area of ​​the sand barrier is obtained; the high-frequency damage area is analyzed, it is judged whether there is a correlation between the damage of the sand barrier and the stress on the sand barrier, and the sand barrier is improved. Summary of the invention

[0004] The object of the present invention is to provide a method for preventing wind erosion of the sand surface in front of panels of a desert photovoltaic power station, so as to solve at least one of the above-mentioned problems of the prior art.

[0005] In a first aspect, the present invention provides a method for preventing wind erosion of the sand surface in front of panels of a desert photovoltaic power station, comprising the following steps:

[0006] S1. Installation of wind erosion protection system;

[0007] Vertical sand barrier installation: Install and fix the vertical sand barrier on the column A in front of the board;

[0008] Among them, the vertical sand barrier installation is installed according to the height. If the height is below 50cm, install two upper and lower wire drawing, and the upper and lower wire drawing fixing rings are pre-set for the sand barrier; if the height is above 50cm, install two upper, middle and lower wire drawing;

[0009] Flat sand barrier installation: Install flat sand barrier under the photovoltaic panels;

[0010] Installation of fixed poles: Two fixed poles are installed on both sides of the vertical sand barrier based on pillars A and B;

[0011] S2. System operation monitoring and maintenance;

[0012] Among them, system operation monitoring and maintenance include the following steps:

[0013] Step 1: Use sensors and visual recognition technology to obtain the loosening and deformation of the sand barrier and the erosion parameters of the sand surface in front of the photovoltaic power station panels, perform parameter analysis, and obtain the sand barrier damage value;

[0014] Step 2: Compare the sand barrier damage value with the sand barrier damage threshold, and determine whether the reference sand barrier is damaged according to the comparison result. If so, generate a damage signal;

[0015] Step 3: Based on the damage signal, repair the damaged area of ​​the sand barrier, analyze the historical repair information of the damaged area, and obtain the damage characterization value;

[0016] Step 4: Compare the damage characterization value with the damage characterization threshold, and determine whether the corresponding area is a high-frequency damage area according to the comparison result. If so, generate a high-frequency damage signal;

[0017] Step 5: Based on the high-frequency damage signal, the correlation between the damage to the sand barrier in the damaged area and the stress on the sand barrier is analyzed to obtain the stress correlation value;

[0018] Step six: Compare the force correlation value with the force correlation threshold, and determine whether there is a correlation between the damage to the sand barrier and the excessive force on the sand barrier based on the comparison result. If so, generate a correlation signal; based on the correlation signal, replace the material of the sand barrier with a material with greater bearing capacity.

[0019] In a second aspect, the present invention provides a system for preventing wind erosion on the sand surface in front of panels of a desert photovoltaic power station, comprising the following modules:

[0020] Damage parameter acquisition module: uses sensors and visual recognition technology to obtain the loosening and deformation of sand barriers and the erosion parameters of the sand surface in front of the photovoltaic power station panels, performs parameter analysis, and obtains the damage value of the sand barriers;

[0021] Damage parameter analysis module: compares the sand barrier damage value with the sand barrier damage threshold, and determines whether the reference sand barrier is damaged based on the comparison result. If so, a damage signal is generated;

[0022] Damage frequency acquisition module: Based on the damage signal, the damaged area of ​​the sand barrier is repaired, and the historical repair information of the damaged area is analyzed to obtain the damage characterization value;

[0023] Damage frequency analysis module: compares the damage characterization value with the damage characterization threshold, and determines whether the corresponding area is a high-frequency damage area based on the comparison result. If so, a high-frequency damage signal is generated;

[0024] Correlation parameter acquisition module: Based on the high-frequency damage signal, the correlation between the damage to the sand barrier in the damaged area and the stress on the sand barrier is analyzed to obtain the stress correlation value;

[0025] Correlation parameter analysis module: compare the force correlation value with the force correlation threshold, and determine whether there is a correlation between the damage to the sand barrier and the excessive force on the sand barrier based on the comparison result. If so, generate a correlation signal; based on the correlation signal, replace the material of the sand barrier with a material with greater bearing capacity.

[0026] Beneficial effects of the present invention:

[0027] 1. The technical solution of the embodiment of the present invention is: by analyzing the shaking and damage of the sand barrier and the erosion of the sand surface in front of the photovoltaic power station panels, it is determined whether the sand barrier is faulty and whether the sand barrier's sand prevention effect is affected, and then whether the sand barrier needs to be repaired; photovoltaic power stations in the desert are difficult to detect sand barrier failures in time due to inconvenient transportation, and sand barrier failures that are not repaired in time will cause serious erosion of the sand surface in front of the photovoltaic power station panels; the present invention uses sensors and visual recognition technology to monitor the sand prevention effect of the sand barrier and the damage to the sand barrier, and can promptly detect damage to the sand barrier and a decrease in the sand prevention effect; it is convenient to carry out repairs in a timely manner to ensure the sand prevention effect of the sand barrier.

[0028] 2. The technical solution of the embodiment of the present invention is: by analyzing the historical damage records of sand barriers, the frequency of recent damage to the sand barriers and the degree of damage to the sand barriers each time are obtained; then, it is determined whether the sand barriers in the corresponding area are often severely damaged in a short period of time, and key detection is performed on the areas that are often severely damaged in a short period of time; the present invention identifies high-frequency sand barrier damaged areas and performs key detection, providing a basis for analyzing the damage causes of high-frequency sand barrier damaged areas.

[0029] 3. The technical solution of the embodiment of the present invention is: by analyzing the historical records of stress on sand barriers in high-frequency damaged areas, performing data processing on the historical records of damage and non-damage, comprehensively analyzing the stress anomalies on the sand barriers and the time of stress anomalies, and judging the correlation between the damage to the sand barriers and the stress conditions of the sand barriers; the present invention analyzes the causes of damage to the sand barriers in high-frequency damaged areas, performs targeted repairs on the damaged sand barriers in the high-frequency damaged areas, avoids the corresponding areas from continuing to be high-frequency damaged areas, and reduces the difficulty and cost of repairing the sand barriers in front of the panels of photovoltaic power stations in the desert; performing targeted repairs and reinforcement on the high-frequency damaged areas can reduce the damage to the sand barriers in front of the panels of photovoltaic power stations in the desert, and ensure the stability of the sand barrier's anti-sand effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a flowchart of the steps of a method for preventing wind erosion on the sand surface in front of panels of a desert photovoltaic power station provided in the first embodiment of the present invention;

[0032] Figure 2 This is a flow chart of obtaining the sand barrier damage value of the method for preventing wind erosion on the sand surface in front of the panels of a desert photovoltaic power station provided in the second embodiment of the present invention;

[0033] Figure 3 This is a flow chart of obtaining damage characterization values ​​of a method for preventing wind erosion on the sand surface in front of panels of a desert photovoltaic power station provided in Embodiment 3 of the present invention;

[0034] Figure 4 This is a flow chart of obtaining force correlation values ​​of a method for preventing wind erosion on the sand surface in front of panels of a desert photovoltaic power station provided in the third embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of a module of a system for preventing wind erosion on the sand surface in front of panels of a desert photovoltaic power station provided in a fourth embodiment of the present invention;

[0036] Figure 6 Schematic diagram of a device for preventing wind erosion of sand surface in front of panels of a desert photovoltaic power station provided in the first embodiment of the present invention;

[0037] Figure 7 It is a schematic diagram of a vertical sand barrier of a method for preventing wind erosion on the sand surface in front of panels of a desert photovoltaic power station provided in the first embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] like Figure 1 As shown, the method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station provided by the embodiment of the present invention specifically includes the following steps:

[0041] A1: Preliminary preparation and evaluation;

[0042] Conduct a comprehensive investigation of the wind and sand environment at the construction site of the desert photovoltaic power station, including the measurement of parameters such as wind speed, wind direction frequency, sand particle size distribution, and wind and sand flow intensity, and draw a detailed wind and sand environment map; at the same time, accurately measure the photovoltaic panel layout, column position and height and other power station structural data to provide a basic basis for subsequent system design and installation;

[0043] A2: Installation of wind erosion protection system;

[0044] A21: Vertical sand barrier installation: Install and fix the vertical sand barrier on the column A in front of the panel. The sand barrier is made of polymer plastic material. To increase the structural strength, corrosion-resistant materials such as carbon powder can be added. The height of the sand barrier is the lowest height of the photovoltaic panel from the ground, generally between 30-150cm. Completely block the main wind direction to cure wind erosion in front of the panel; Figure 6 As shown;

[0045] Among them, the vertical sand barrier is installed as follows Figure 2 As shown, wire drawing is installed according to the height. If the height is below 50cm, two wire drawing strips can be installed, and the upper and lower wire drawing fixing rings are pre-set for sand barriers; if the height is above 50cm, two wire drawing strips can be installed;

[0046] A22: Flat sand barrier installation: Install flat sand barriers under the photovoltaic panels. The materials are polymer plastics, or degradable plastics such as PLA, or spray chemical sand fixation agents, or lay gravel, in order to prevent erosion under the panels.

[0047] A23: Fixing rod installation: Two fixing rods are installed on both sides of the vertical sand barrier based on the pillars A and B. The fixing rods are made of metal or high polymer plastic with enhanced hardness. They are equipped with prefabricated fixing devices and can be fixed on the pillars A and B. The specific fixing method is screw fixing or prefabricated plastic material device fixing;

[0048] A3: System operation monitoring and maintenance;

[0049] Various sensors are installed at key locations of the wind erosion prevention system to collect wind and sand data and sand barrier status information in real time; the monitoring center processes the received data in depth, analyzes system failures, and predicts potential failure risks; once the monitoring center identifies a system failure, the system automatically generates a maintenance task order and pushes it to the maintenance personnel's terminal via SMS and other means; upon receiving the warning information, the maintenance personnel respond quickly and repair the system failure;

[0050] Transportation in desert areas is inconvenient, and it is difficult to regularly inspect and maintain sand barriers. Once sand barriers are damaged or parts are loose, it is difficult to find and repair them in time, which may cause the wind erosion prevention effect to gradually weaken until it fails.

[0051] Analyze whether the sand barrier is loose and the degree of looseness, whether the sand barrier is damaged, deformed or other faults, and analyze the effect of the sand barrier in reducing the erosion of the sand surface in front of the photovoltaic power station panels to determine whether the sand barrier is faulty; repair the faulty sand barrier and conduct statistical analysis on the repair situation; obtain the high-frequency damage area of ​​the sand barrier; analyze the high-frequency damage area to determine whether there is a correlation between the damage to the sand barrier and the force on the sand barrier, and improve the sand barrier.

[0052] Embodiment 2

[0053] like Figure 2 As shown, the method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station provided by the embodiment of the present invention specifically includes the following steps:

[0054] Step 1: Use sensors and visual recognition technology to obtain the loosening and deformation of the sand barrier and the erosion parameters of the sand surface in front of the photovoltaic power station panels, perform parameter analysis, and obtain the sand barrier damage value;

[0055] The photovoltaic power station is divided into regions, and several sand barriers are randomly selected in each region as reference sand barriers;

[0056] It should be noted that the parameters of the reference sand barrier are used to represent the parameters of the sand barrier in the corresponding area;

[0057] The sensor obtains the shaking distance of the sand barrier after the reference sand barrier loosens;

[0058] It should be noted that the shaking of the sand barrier will affect the wind erosion prevention effect of the sand barrier; the greater the shaking distance of the sand barrier, the greater the impact on the wind erosion prevention effect of the sand barrier;

[0059] It should be noted that a monitoring point is taken on the sand barrier, and the position of the monitoring point when the sand barrier is loose is taken as the reference point; after the sand barrier is loosened, the distance between the monitoring point and the reference point is the sand barrier shaking distance;

[0060] The sand barrier shaking distance is processed by ratio with the sand barrier shaking distance threshold to obtain the shaking distance ratio;

[0061] The reference sand barrier image and the image of the sand surface in front of the photovoltaic panel are acquired and analyzed through visual recognition technology;

[0062] Obtain the damaged area of ​​the sand barrier, and perform ratio processing on the damaged area of ​​the sand barrier and the total area of ​​the sand barrier to obtain the damaged area ratio;

[0063] The sway distance ratio and the damage area ratio are weightedly summed to obtain the sway damage ratio, which is marked as PS;

[0064] The image of the sand surface in front of the photovoltaic panel is obtained, and the eroded area of ​​the sand surface in front of the photovoltaic panel is obtained by visual recognition technology; the eroded area is subtracted from the historical erosion area to obtain the erosion area difference; the erosion area difference is processed by ratio processing with the historical erosion area to obtain the erosion rate ratio, which is marked as SL;

[0065] The shaking damage ratio PS and the erosion rate ratio SL are processed and the formula is used. The sand barrier damage value SH is obtained; wherein a1 and a2 are preset proportional coefficients;

[0066] It should be noted that the greater the sand barrier damage value, the higher the degree of sand barrier damage;

[0067] Step 2: Compare the sand barrier damage value with the sand barrier damage threshold, and determine whether the reference sand barrier is damaged according to the comparison result. If so, generate a damage signal;

[0068] The sand barrier damage value is compared with the sand barrier damage threshold. The comparison process is as follows:

[0069] If the sand barrier damage value is greater than or equal to the sand barrier damage threshold, a damage signal is generated;

[0070] If the sand barrier damage value is less than the sand barrier damage threshold, a normal signal is generated; based on the normal signal, no processing is performed;

[0071] Based on the damage signal, the sand barrier in the corresponding area is recorded as a damaged area, and the maintenance personnel are notified to carry out repairs;

[0072] The technical solution of the embodiment of the present invention is: by analyzing the shaking and damage of the sand barrier and the erosion of the sand surface in front of the photovoltaic power station panels, it is determined whether the sand barrier is faulty and whether the sand barrier's sand prevention effect is affected, and then whether the sand barrier needs to be repaired; photovoltaic power stations in the desert are difficult to detect sand barrier failures in time due to inconvenient transportation, and sand barrier failures that are not repaired in time will cause serious erosion of the sand surface in front of the photovoltaic power station panels; the present invention uses sensors and visual recognition technology to monitor the sand prevention effect of the sand barrier and the damage to the sand barrier, and can promptly detect damage to the sand barrier and a reduction in the sand prevention effect; it is convenient to carry out timely repairs to ensure the sand prevention effect of the sand barrier.

[0073] Embodiment 3

[0074] like Figure 3 As shown, the method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station provided by the embodiment of the present invention specifically includes the following steps:

[0075] Step 3: Based on the damage signal, repair the damaged area of ​​the sand barrier, analyze the historical repair information of the damaged area, and obtain the damage characterization value;

[0076] Based on the damage signal, repair the damaged area of ​​the sand barrier;

[0077] Obtain historical repair information of damaged areas and conduct data analysis;

[0078] The damaged area is repaired a total of (n+1) times;

[0079] Obtain the time of each maintenance of the damaged area, analyze it, and obtain the interval time of each maintenance of the damaged area, with a total of n interval times; compare the interval time of each maintenance of the damaged area with the interval time threshold. If the interval time of each maintenance of the damaged area is less than the interval time threshold, record the interval time of each maintenance of the corresponding damaged area as a short maintenance interval; obtain the number of occurrences of the short maintenance interval m; perform ratio processing on the number of occurrences of the short maintenance interval m and the total number of interval times of each maintenance of the damaged area n, and obtain the short maintenance interval ratio S1, where S1 = m / n;

[0080] The total time from the completion of the installation of the sand barrier in the damaged area to the present is recorded as T;

[0081] Select a split point in the total time T from the completion of the installation of the sand barrier in the damaged area to the present; record the time period from the completion of the installation of the sand barrier in the damaged area to the split point as the pre-segmentation period T1, and record the time period from the split point to the present as the post-segmentation period T2;

[0082] It should be noted that the split points are selected based on experienced staff in this field;

[0083] Obtain the number of short maintenance intervals in the pre-segmentation period T1 and the post-segmentation period T2 respectively, and convert the number of short maintenance intervals in the pre-segmentation period T1 to m1 and the number of short maintenance intervals in the post-segmentation period T2 to m2;

[0084] Obtain the post-segment proportion S2 of the number of short maintenance intervals m2 that appear in the segmented time period T2 in the number of short maintenance intervals m, where S2=m2 / m;

[0085] It should be noted that the larger the proportion S2 after segmentation, the higher the frequency of recent repairs of sand barriers in the damaged area;

[0086] The weighted sum of the post-segmentation ratio S2 and the short maintenance interval ratio S1 is obtained to obtain the high-frequency maintenance ratio, which is recorded as GP.

[0087] Obtain historical damage information of the damaged area and conduct data analysis;

[0088] Get the number of sand barriers that need to be repaired each time in the damaged area d;

[0089] The number of sand barriers d that need to be repaired each time in the damaged area is compared with the threshold number of sand barriers that need to be repaired. If the number of sand barriers d that need to be repaired each time in the damaged area is greater than or equal to the threshold number of sand barriers that need to be repaired, this repair is recorded as high damage repair, and the number of high damage repairs is recorded as g;

[0090] The high damage repair times g and the repair times (n+1) of the damaged area are processed to obtain the high damage repair ratio, which is marked as WX;

[0091] The high-frequency repair ratio GP and the high-damage repair ratio WX are processed and the formula is used. Obtain damage characterization value BZ; wherein b1 and b2 are preset proportional coefficients;

[0092] It should be noted that the historical maintenance information of the damaged area is analyzed, and the damage characterization value BZ is obtained by analyzing the maintenance time interval and the number of repair sand barriers during each maintenance; the larger the damage characterization value BZ, the more serious the damage in the corresponding area;

[0093] Step 4: Compare the damage characterization value with the damage characterization threshold, and determine whether the corresponding area is a high-frequency damage area according to the comparison result. If so, generate a high-frequency damage signal;

[0094] The damage characterization value is compared with the damage characterization threshold value, and the specific process is as follows:

[0095] If the damage characterization value is greater than or equal to the damage characterization threshold, a high-frequency damage signal is generated;

[0096] If the damage characterization value is less than the damage characterization threshold, a non-high frequency damage signal is generated;

[0097] Based on the non-high frequency damage signal, no operation is performed;

[0098] Based on high-frequency damage signals, the correlation between sand barrier damage and sand barrier stress in the damaged area is analyzed;

[0099] The technical solution of the embodiment of the present invention is: by analyzing the historical damage records of sand barriers, the frequency of recent damage to the sand barriers and the degree of damage to the sand barriers each time are obtained; then, it is determined whether the sand barriers in the corresponding area are often severely damaged in a short period of time, and key inspections are performed on areas that are often severely damaged in a short period of time; the present invention identifies high-frequency sand barrier damaged areas and performs key inspections, providing a basis for analyzing the causes of damage to high-frequency sand barrier damaged areas.

[0100] Embodiment 4

[0101] like Figure 4 As shown, the method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station provided by the embodiment of the present invention specifically includes the following steps:

[0102] Step 5: Based on the high-frequency damage signal, the correlation between the damage to the sand barrier in the damaged area and the stress on the sand barrier is analyzed to obtain the stress correlation value;

[0103] Obtain the damage force of the reference sand barrier in the damaged area;

[0104] Obtain the minimum value of the damage force of the reference sand barrier in the damaged area;

[0105] Obtain the historical records of the forces on the sand barrier when no damage occurs in the damaged area, obtain the historical sand barrier forces and compare them with the minimum values ​​of the reference sand barrier damage forces in the damaged area, record the historical sand barrier forces that are greater than or equal to the minimum values ​​of the reference sand barrier damage forces in the damaged area as over-limit forces, and obtain the number of occurrences of over-limit forces as C;

[0106] Calculate the force representation values ​​of over-limit forces and damage forces, specifically;

[0107] The over-limit force and damage force are processed by difference with the threshold value to obtain the excess force value CZ;

[0108] Get the duration of the excess force value, recorded as excess duration SC;

[0109] The excess time SC and the excess force value CZ are analyzed using the formula SZ = z1*ln(SC+SC 2 +1)+z2*CZ 3 , and obtain the force characterization value SZ; where z1 and z2 are preset proportional coefficients;

[0110] It should be noted that the larger the force characterization value SZ is, the greater the possibility of sand barrier damage is;

[0111] Obtain the minimum value of the force characterization value of the reference sand barrier damage force in the damaged area, recorded as the damage force characterization value SZmin;

[0112] Compare the force characterization value SZ of all out-of-bounds forces with the damage force characterization value SZmin;

[0113] If the force representation value SZ of the over-limit force is greater than or equal to the damage force representation value SZmin, the corresponding over-limit force is recorded as the damage force, and the number of damage forces Y is counted;

[0114] If the force characterization value SZ of the over-limit force is less than the damage force characterization value SZmin, no marking is performed;

[0115] The number of repairs (n+1) of the damaged area is processed by ratio with the number of forces Y that should be damaged, and the force correlation value GL is obtained, where GL = (n+1) / Y;

[0116] It should be noted that the larger the number of damage forces Y is, the smaller the force correlation value is;

[0117] Step 6: Compare the force correlation value with the force correlation threshold value, and determine whether there is a correlation between the damage to the sand barrier and the excessive force on the sand barrier according to the comparison result. If so, generate a correlation signal; based on the correlation signal, replace the material of the sand barrier with a material with greater bearing capacity;

[0118] Compare the force association value with the force association threshold. The specific process is as follows:

[0119] If the force correlation value is greater than or equal to the force correlation threshold, a correlation signal is generated;

[0120] If the force correlation value is less than the force correlation threshold, a non-correlation signal is generated;

[0121] Based on the non-correlated signals, other causes of sand barrier damage in the high-frequency damage area are analyzed;

[0122] Based on the correlation signal, the sand barriers in the high-frequency damage areas are reinforced or replaced with materials with greater bearing capacity;

[0123] The technical solution of the embodiment of the present invention is: by analyzing the historical records of stress on sand barriers in high-frequency damaged areas, performing data processing on the historical records of damage and non-damage historical records, comprehensively analyzing the abnormal stress on the sand barriers and the abnormal stress time, and judging the correlation between the damage to the sand barriers and the stress conditions of the sand barriers; the present invention analyzes the causes of damage to the sand barriers in high-frequency damaged areas, performs targeted repairs on the damaged sand barriers in the high-frequency damaged areas, avoids the corresponding areas from continuing to be high-frequency damaged areas, and reduces the difficulty and cost of repairing the sand barriers in front of the panels of photovoltaic power stations in the desert; performing targeted repairs and reinforcement on the high-frequency damaged areas can reduce the damage to the sand barriers in front of the panels of photovoltaic power stations in the desert, and ensure the stability of the sand barrier's anti-sand effect.

[0124] Embodiment 5

[0125] like Figure 5 As shown, the wind erosion prevention system for the sand surface in front of the panels of the desert photovoltaic power station provided by the embodiment of the present invention specifically includes the following modules:

[0126] Damage parameter acquisition module: uses sensors and visual recognition technology to obtain the loosening and deformation of sand barriers and the erosion parameters of the sand surface in front of the photovoltaic power station panels, performs parameter analysis, and obtains the damage value of the sand barriers;

[0127] Damage parameter analysis module: compares the sand barrier damage value with the sand barrier damage threshold, and determines whether the reference sand barrier is damaged based on the comparison result. If so, a damage signal is generated;

[0128] Damage frequency acquisition module: Based on the damage signal, the damaged area of ​​the sand barrier is repaired, and the historical repair information of the damaged area is analyzed to obtain the damage characterization value;

[0129] Damage frequency analysis module: compares the damage characterization value with the damage characterization threshold, and determines whether the corresponding area is a high-frequency damage area based on the comparison result. If so, a high-frequency damage signal is generated;

[0130] Correlation parameter acquisition module: Based on the high-frequency damage signal, the correlation between the damage to the sand barrier in the damaged area and the stress on the sand barrier is analyzed to obtain the stress correlation value;

[0131] Correlation parameter analysis module: compare the force correlation value with the force correlation threshold, and determine whether there is a correlation between the damage to the sand barrier and the excessive force on the sand barrier based on the comparison result. If so, generate a correlation signal; based on the correlation signal, replace the material of the sand barrier with a material with greater bearing capacity.

[0132] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for preventing wind erosion on the sand surface in front of panels of a desert photovoltaic power station, characterized in that: The following steps are involved: S1. Installation of wind erosion prevention system; Vertical sand barrier installation: Install and fix the vertical sand barrier on the column A in front of the board; Among them, the vertical sand barrier installation is installed according to the height. If the height is below 50cm, install two upper and lower wire drawing, and the upper and lower wire drawing fixing rings are pre-set for the sand barrier; if the height is above 50cm, install two upper, middle and lower wire drawing; Flat sand barrier installation: Install flat sand barrier under the photovoltaic panels; Installation of fixed poles: Two fixed poles are installed on both sides of the vertical sand barrier based on pillars A and B; S2. System operation monitoring and maintenance; Among them, system operation monitoring and maintenance include the following steps: Step 1: Use sensors and visual recognition technology to obtain the loosening and deformation of the sand barrier and the erosion parameters of the sand surface in front of the photovoltaic power station panels, perform parameter analysis, and obtain the sand barrier damage value; Step 2: Compare the sand barrier damage value with the sand barrier damage threshold, and determine whether the reference sand barrier is damaged according to the comparison result. If so, generate a damage signal; Step 3: Based on the damage signal, repair the damaged area of ​​the sand barrier, analyze the historical repair information of the damaged area, and obtain the damage characterization value; Step 4: Compare the damage characterization value with the damage characterization threshold, and determine whether the corresponding area is a high-frequency damage area according to the comparison result. If so, generate a high-frequency damage signal; Step 5: Based on the high-frequency damage signal, the correlation between the damage to the sand barrier in the damaged area and the stress on the sand barrier is analyzed to obtain the stress correlation value; Step six: Compare the force correlation value with the force correlation threshold, and determine whether there is a correlation between the damage to the sand barrier and the excessive force on the sand barrier based on the comparison result. If so, generate a correlation signal; based on the correlation signal, replace the material of the sand barrier with a material with greater bearing capacity.

2. The method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station according to claim 1, characterized in that: The sand barrier damage value is obtained as follows: The swaying distance and damaged area of ​​the sand barrier are analyzed to obtain the swaying damage ratio PS; The erosion area of ​​the sand surface in front of the photovoltaic panel was analyzed to obtain the erosion rate ratio, which was marked as SL; The shaking damage ratio PS and the erosion rate ratio SL are processed and the formula is used. The sand barrier damage value SH is obtained, wherein a1 and a2 are preset proportional coefficients.

3. The method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station according to claim 2, characterized in that: The shaking damage ratio and the erosion rate ratio are obtained as follows: The photovoltaic power station is divided into regions, and several sand barriers are selected in each region as reference sand barriers; The sand barrier shaking distance is processed by ratio with the sand barrier shaking distance threshold to obtain the shaking distance ratio; Obtain the damaged area of ​​the sand barrier, and perform ratio processing on the damaged area of ​​the sand barrier and the total area of ​​the sand barrier to obtain the damaged area ratio; The sway damage ratio PS is obtained by weighted summing the sway distance ratio and the damage area ratio; The eroded area of ​​the sand surface in front of the photovoltaic panel is obtained; the eroded area is subtracted from the historical erosion area to obtain the erosion area difference; the erosion area difference is ratioed with the historical erosion area to obtain the erosion rate ratio, which is marked as SL.

4. The method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station according to claim 1, characterized in that: The damage characterization value is obtained in the following manner: The interval between each repair of the damaged area is analyzed to obtain the high-frequency repair ratio GP; The number of sand barriers that need to be repaired each time in the damaged area is analyzed to obtain the high damage repair ratio WX; The high-frequency repair ratio GP and the high-damage repair ratio WX are processed and the formula is used. The damage characterization value BZ is obtained, wherein b1 and b2 are preset proportional coefficients.

5. The method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station according to claim 4, characterized in that: The high frequency maintenance ratio is obtained as follows: Obtain the interval time of each maintenance of the damaged area, the number of interval time is n; analyze the interval time of each maintenance of the damaged area to obtain the short maintenance interval; obtain the number of occurrences of the short maintenance interval m; The number of short maintenance intervals m and the total number of intervals n for each maintenance of the damaged area are processed by ratio processing to obtain the short maintenance interval ratio S1, where S1 = m / n; Select a split point in the total time T from the completion of the installation of the sand barrier in the damaged area to the present; divide the total time T into a pre-split period T1 and a post-split period T2; Get the number of times m2 of short maintenance intervals occurring in the segmented period T2; Obtain the post-segment proportion S2 of the number of short maintenance intervals m2 that appear in the segmented time period T2 in the number of short maintenance intervals m, where S2=m2 / m; The weighted sum of the post-segmentation proportion S2 and the short maintenance interval ratio S1 is obtained to obtain the high-frequency maintenance ratio, which is recorded as GP.

6. The method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station according to claim 4, characterized in that: The high damage repair ratio is obtained as follows: Get the number of sand barriers that need to be repaired each time in the damaged area d; The number of sand barriers d that need to be repaired each time in the damaged area is compared with the threshold number of sand barriers that need to be repaired. If the number of sand barriers d that need to be repaired each time in the damaged area is greater than or equal to the threshold number of sand barriers that need to be repaired, this repair is recorded as high damage repair, and the number of high damage repairs is recorded as g; The high damage repair times g and the repair times (n+1) of the damaged area are ratio processed to obtain the high damage repair ratio, which is marked as WX.

7. The method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station according to claim 1, characterized in that: The force-related value is obtained in the following manner: Analyze the force characterization value of the super-limit force to obtain the amount of damage force Y; The number of repairs (n+1) of the damaged area is ratioed to the number of forces Y that should be damaged to obtain a force correlation value GL, where GL=(n+1) / Y.

8. The method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station according to claim 7, characterized in that: The method for obtaining the amount of the damage force is as follows: Obtain the minimum value of the force characterization value of the reference sand barrier damage force in the damaged area, recorded as the damage force characterization value SZmin; Compare the force characterization value SZ of all out-of-bounds forces with the damage force characterization value SZmin; If the force representation value SZ of the out-of-bounds force is greater than or equal to the damage force representation value SZmin, the corresponding out-of-bounds force will be recorded as the damage force, and the number of damage forces Y will be counted.

9. The method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station according to claim 8, characterized in that: The method for obtaining the force characterization value is: The stress on the reference sand barrier in the damaged area is analyzed to obtain the excess stress value CZ; Get the duration of the excess force value, recorded as excess duration SC; The excess time SC and the excess force value CZ are analyzed using the formula SZ = z1*ln(SC+SC 2 +1)+z2*CZ 3 , and obtain the force characterization value SZ; where z1 and z2 are preset proportional coefficients.

10. The method for preventing wind erosion of the sand surface in front of the panels of a desert photovoltaic power station according to claim 9, characterized in that: The method for obtaining the excess force value is as follows: Obtain the damage force of the reference sand barrier in the damaged area; Obtain the minimum value of the damage force of the reference sand barrier in the damaged area; Obtain the historical records of the forces on the sand barrier when no damage occurs in the damaged area, obtain the historical sand barrier forces and compare them with the minimum values ​​of the reference sand barrier damage forces in the damaged area, and record the historical sand barrier forces that are greater than or equal to the minimum values ​​of the reference sand barrier damage forces in the damaged area as out-of-bounds forces; The over-limit force and damage force are respectively subtracted from the threshold value to obtain the excess force value CZ.

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