Flexible photovoltaic support positioning method

Abstract

The invention relates to the technical field of photovoltaic supports, and discloses a flexible photovoltaic support positioning method, which comprises the following steps: determining the installation position of an end stand column, and recording the bottom elevation of the end stand column as a first height H1; according to the installation position of the end stand column and the installation angle alpha of the stay cable, the theoretical drilling point position of the stay cable anchor rod in the horizontal plane where the bottom of the end stand column is located is determined, and the height, away from the ground in the vertical direction, of the theoretical drilling point position is recorded as the second height H2; and according to the inclination angle beta of the ground terrain, the second height and the installation angle of the stay cable, the actual drilling point position of the stay cable anchor rod is determined. Through the correction relation between the theoretical drilling point and the actual drilling point, the method can adapt to complex terrains, avoid the difficulty in determining the position of a construction point caused by topographic relief, reduce the construction cost and time, reduce the damage to the ecological environment of a hillside, improve the positioning efficiency and meet the requirements of photovoltaic power station construction under the complex terrains.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic brackets, and in particular to a positioning method for a flexible photovoltaic bracket. Background Art

[0002] In the construction of photovoltaic power stations, the support system is a key component. Traditional photovoltaic supports mostly adopt fixed structures, which are suitable for areas with good conditions such as flat deserts, Gobi or roofs. However, in complex terrain conditions, such as steep mountains, tidal flats with poor geological conditions, deep water and large-span fish ponds, and some large sewage treatment plants, due to the limitations of the requirements of the foundation construction and installation methods of traditional fixed photovoltaic supports, the land utilization rate is low, the construction is difficult and the cost is high.

[0003] In order to facilitate the flexible adjustment of the installation angle of photovoltaic modules, a flexible photovoltaic bracket is usually formed by combining columns and flexible cables to install photovoltaic modules. Figure 1 As shown, the flexible photovoltaic support mainly consists of a cable 1, a component cable 2, an end column 3, an end beam 4, an intermediate column 5, and an intermediate beam 6. The angle of the flexible cable installed between the tops of adjacent columns is adjusted by adjusting the installation height of the column, and the flexible cable is used to support the photovoltaic panel. Among them, in addition to being fixed to the ground during installation, the end column also needs to be provided with a cable on the side of the end column away from the flexible cable to further stabilize the end column. The end column of at least one end of the flexible photovoltaic support needs to be installed in a position with a slope. However, since the installation position of the flexible photovoltaic support has an irregular slope, when the column of the flexible photovoltaic support is installed, the terrain elevation change caused by the irregular slope puts forward higher requirements on the coordinate correction of the anchor drilling point. In the prior art, the installation position of the anchor used to fix the cable on the ground mostly relies on empirical estimation or repeated measurement, resulting in low efficiency and insufficient accuracy in the positioning and installation of the flexible photovoltaic support. Summary of the invention

[0004] In view of this, the present invention provides a flexible photovoltaic bracket positioning method to solve the problem of low efficiency and insufficient precision in the positioning and installation of flexible photovoltaic brackets in the prior art.

[0005] In a first aspect, the present invention provides a method for positioning a flexible photovoltaic support, comprising the following steps:

[0006] Determine the installation position of the end column and record the bottom elevation of the end column as the first height H1;

[0007] According to the installation position of the end column and the installation angle α between the inclined cable and the end column, determine the theoretical drilling point position of the inclined cable anchor rod in the horizontal plane where the bottom of the end column is located, and record the height of the theoretical drilling point position from the ground in the vertical direction as the second height H2;

[0008] Determine the actual drilling point position of the stay cable anchor according to the inclination angle β of the ground terrain, the second height, and the installation angle of the stay cable.

[0009] In the flexible photovoltaic support positioning method provided by the present invention, the height of the end column and the installation angle α of the stay cable are both pre-determined values. During on-site construction, after determining the installation position of the end column and the inclination angle β of the ground terrain, the actual drilling point position of the stay cable anchor can be quickly obtained according to the flexible photovoltaic support positioning method provided by the present invention. In actual implementation, first determine the installation position of the end column and record the elevation of its bottom as the first height H1. Then, according to the installation position of the end column and the installation angle α of the stay cable, determine the theoretical drilling point position of the stay cable anchor in the horizontal plane where the bottom of the end column is located, and record the height of the theoretical drilling point from the ground in the vertical direction as the second height H2. Finally, combine the inclination angle β of the ground terrain, the second height H2, and the installation angle α of the stay cable to correct the theoretical drilling point position, so as to determine the actual drilling point position of the stay cable anchor. Through the correction relationship between the theoretical drilling point and the actual drilling point, the method can adapt to complex terrains, avoid difficulties in determining the construction point position caused by terrain undulations, reduce construction costs and time, and at the same time reduce the damage to the hillside ecological environment, improve the positioning efficiency, and meet the requirements of photovoltaic power station construction under complex terrains.

[0010] In an optional embodiment, when the elevation of the actual installation position of the stay cable anchor is lower than the first height, the horizontal distance L between the actual drilling point position and the theoretical drilling point is L = H2 / (tanα - tanβ). By calculating the actual drilling point position with this formula, the formula can be pre-built into computing devices such as computers, which can quickly determine the accurate installation position of the stay cable anchor at the construction site, improve construction efficiency, reduce on-site construction marks at the same time, and reduce the damage to the hillside ecological environment.

[0011] In an optional embodiment, when the elevation of the actual installation position of the stay cable anchor is higher than the first height, the horizontal distance L between the actual drilling point position and the theoretical drilling point is L = H2 / (tanα + tanβ).

[0012] In an optional embodiment, the installation angle α of the stay cable is 45°. This makes the value of tanα a fixed value of 1, simplifying the calculation steps. At the same time, setting the installation angle of the stay cable to 45° can ensure reasonable force between the stay cable and the end column, simplify the calculation process, improve construction efficiency, and ensure the stability and reliability of the structure, and can meet the installation requirements of photovoltaic supports under complex terrain conditions.

[0013] In an alternative embodiment, when the elevation of the actual installation position of the stay cable anchor is lower than the first height, if the inclination angle β of the ground terrain is 35° - 40°, then L = 3.3H2;

[0014] If the inclination angle β of the ground terrain is 25° - 27°, then L = 2H2;

[0015] If the inclination angle β of the ground terrain is 15° - 20°, then L = 1.3H2;

[0016] If the inclination angle β of the ground terrain is 5° - 10°, then L = 1.1H2.

[0017] By presetting a quick calculation formula for the inclination angle β of the ground terrain within a specific range, the calculation process can be further simplified and the positioning efficiency can be improved. Determining the horizontal distance L quickly according to different terrain inclination angles β can quickly locate the actual drilling point position of the stay cable anchor, reduce construction time and costs, and at the same time ensure a reasonable installation angle of the stay cable, improving the stability and reliability of the structure.

[0018] In an alternative embodiment, when the elevation of the actual installation position of the stay cable anchor is higher than the first height, if the inclination angle β of the ground terrain is 35° - 40°, then L = H2 / 1.767;

[0019] If the inclination angle β of the ground terrain is 25° - 27°, then L = H2 / 1.315;

[0020] If the inclination angle β of the ground terrain is 15° - 20°, then L = H2 / 1.487;

[0021] If the inclination angle β of the ground terrain is 5° - 10°, then L = H2 / 1.13.

[0022] In an alternative embodiment, it further includes:

[0023] Verify the horizontal distance between the actual drilling point position and the theoretical drilling point according to the theoretical drilling point position coordinates and the actual drilling point position coordinates. If the error exceeds the preset value, re - determine the horizontal distance between the actual drilling point position and the theoretical drilling point. By verifying the horizontal distance between the actual drilling point position and the theoretical drilling point, the positioning accuracy can be ensured, construction errors can be reduced, the stability and reliability of the structure can be improved, and at the same time, rework caused by positioning errors can be avoided, saving construction time and costs.

[0024] In an alternative embodiment, it further includes:

[0025] When the elevation of the actual installation position of the stay cable anchor is lower than the first height, install a vertical rod on the ground in the vertical direction at the position of the theoretical drilling point;

[0026] Install a laser at the position of the theoretical drilling point on the vertical rod, and adjust the irradiation angle of the laser to the installation angle α of the stay cable;

[0027] Start the laser, and the irradiation point of the laser on the ground is the actual drilling point position of the stay cable anchor.

[0028] Quickly determining the actual drilling point position through the laser can improve the positioning efficiency, reduce the dependence on the terrain, ensure the reasonable installation angle of the stay cable at the same time, improve the stability and reliability of the structure, and meet the installation requirements of the photovoltaic bracket under complex terrain conditions.

[0029] In an alternative embodiment, it further includes:

[0030] When the elevation of the actual installation position of the stay cable anchor is lower than the first height, install a vertical rod on the ground between the position of the theoretical drilling point and the installation position of the end column;

[0031] According to the installation angle α of the stay cable and the horizontal distance between the position of the theoretical drilling point and the installation position of the end column, obtain the theoretical intersection point of the vertical rod and the stay cable, install a laser at the theoretical intersection point of the vertical rod and the stay cable on the vertical rod, and adjust the irradiation angle of the laser to the installation angle α of the stay cable;

[0032] Start the laser, and the irradiation point of the laser on the ground is the actual drilling point position of the stay cable anchor.

[0033] In an alternative embodiment, the installation angle α of the stay cable is 45°, and the vertical rod is installed on the ground at the midpoint between the position of the theoretical drilling point and the installation position of the end column. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a schematic structural diagram of the flexible photovoltaic bracket described in the background technology of the present invention.

[0036] Figure 2 It is a schematic diagram of the flexible photovoltaic bracket positioning method provided by the embodiment of the present invention.

[0037] Figure 3 It is a schematic diagram in another case of the flexible photovoltaic support positioning method provided by the embodiment of the present invention.

[0038] Figure 4 It is a schematic diagram of laser positioning in the flexible photovoltaic support positioning method provided by the embodiment of the present invention.

[0039] Explanation of reference numerals: 1. Stay cable; 2. Component cable; 3. End column; 4. End crossbeam; 5. Intermediate column; 6. Intermediate crossbeam; 7. Vertical rod. Specific embodiments

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] The following combines Figures 2 to 4 , to describe the embodiments of the present invention.

[0042] According to an embodiment of the present invention, on the one hand, a flexible photovoltaic support positioning method is provided, including the following steps:

[0043] Determine the installation position of the end column 3 through a total station or a global navigation satellite (GNSS) positioning system, and mark the longitudinal coordinates (X0, Y0) of this position on the construction drawing. At the same time, use a digital level or a laser altimeter to measure the absolute elevation of the reference point at the bottom of the end column 3, and record it as the first height H1. It should be noted that the installation position of the end column 3 can be pre-positioned using 3D modeling software or real-time kinematic positioning through a ground control point network.

[0044] Based on the installation position coordinates (X0, Y0) of the end column 3, combined with the preset installation angle α between the stay cable 1 and the end column 3, establish a rectangular coordinate system in the horizontal plane where the bottom of the end column 3 is located. Specifically, with the central axis of the end column 3 as the reference, calculate the horizontal projection distance ΔX = H1·tanα of the anchor bolt theoretical drilling point of the stay cable 1 relative to the end column 3 according to the trigonometric function relationship, and determine the plane coordinates of the theoretical drilling point as (X0 + ΔX, Y0). Subsequently, use an elevation measurement device to measure the actual ground height at the location of this theoretical drilling point, and record it as the second height H2. Alternatively, the determination of the theoretical drilling point can be achieved by generating a 3D spatial model using BIM software or obtaining terrain elevation data using unmanned aerial vehicle photogrammetry technology.

[0045] According to the inclination angle β of the measured ground terrain, the second height H2, and the installation angle α of the stay cable 1, a spatial geometric correction model is constructed to determine the actual drilling point position of the anchor rod of the stay cable 1.

[0046] In the flexible photovoltaic support positioning method provided in this embodiment, the height of the end column 3 and the installation angle α of the stay cable 1 are both pre-determined values. During on-site construction, after determining the installation position of the end column 3 and the inclination angle β of the ground terrain, the actual drilling point position of the anchor rod of the stay cable 1 can be quickly obtained according to the flexible photovoltaic support positioning method provided by the present invention. In actual implementation, first determine the installation position of the end column 3 and record the elevation of its bottom as the first height H1. Then, according to the installation position of the end column 3 and the installation angle α of the stay cable 1, determine the theoretical drilling point position of the anchor rod of the stay cable 1 in the horizontal plane where the bottom of the end column 3 is located, and record the height of this theoretical drilling point from the ground in the vertical direction as the second height H2. Finally, combine the inclination angle β of the ground terrain, the second height H2, and the installation angle α of the stay cable 1 to correct the theoretical drilling point position, so as to determine the actual drilling point position of the anchor rod of the stay cable 1. Through the correction relationship between the theoretical drilling point and the actual drilling point, the method can adapt to complex terrains, avoid difficulties in determining the construction point position caused by terrain undulations, reduce construction costs and time, while reducing the damage to the mountain slope ecological environment, improve the positioning efficiency, and meet the requirements of photovoltaic power station construction under complex terrains.

[0047] In this embodiment, as Figure 2 shown, when the elevation of the actual installation position of the anchor rod of the stay cable 1 is lower than the first height, the horizontal distance L between the actual drilling point position and the theoretical drilling point is L = H2 / (tanα - tanβ). It should be particularly noted that the application of this formula requires the geometric constraint condition of α > β. When α ≤ β, the photovoltaic panel can be directly installed through the mounting bracket without setting a flexible photovoltaic support. By calculating the actual drilling point position with this formula, the formula can be pre-built into computing devices such as computers, and the accurate installation position of the anchor rod of the stay cable 1 can be quickly determined at the construction site, improving construction efficiency, while reducing on-site construction marks and the damage to the mountain slope ecological environment. Specifically, the formula is pre-built into the mobile terminal application program, and the L value is automatically generated by inputting the parameters of H2, α, and β; or a quick reference table is made, and the preset coefficient is directly called for calculation according to different β value ranges.

[0048] Furthermore, as Figure 3 shown, when the elevation of the actual installation position of the anchor rod of the stay cable 1 is higher than the first height, the horizontal distance L between the actual drilling point position and the theoretical drilling point is L = H2 / (tanα + tanβ). To ensure that the calculation result has a small error, the terrain slope direction can be measured by combining a gyroscope, and the slope angle measurement accuracy can be verified by differential GPS technology.

[0049] In one embodiment, the installation angle α of the stay cable 1 is 45°. This makes the value of tanα a fixed value of 1, simplifying the calculation steps. At the same time, setting the installation angle of the stay cable 1 to 45° can ensure reasonable force between the stay cable 1 and the end column 3, simplify the calculation process, improve the construction efficiency, and at the same time ensure the stability and reliability of the structure, and can meet the installation requirements of the photovoltaic support under complex terrain conditions.

[0050] In one embodiment, when the elevation of the actual installation position of the stay cable 1 anchor is lower than the first height, if the inclination angle β of the ground terrain is 35° - 40°, then L = 3.3H2; if the inclination angle β of the ground terrain is 25° - 27°, then L = 2H2; if the inclination angle β of the ground terrain is 15° - 20°, then L = 1.3H2; if the inclination angle β of the ground terrain is 5° - 10°, then L = 1.1H2. When the elevation of the actual installation position of the stay cable 1 anchor is higher than the first height, if the inclination angle β of the ground terrain is 35° - 40°, then L = H2 / 1.767; if the inclination angle β of the ground terrain is 25° - 27°, then L = H2 / 1.315; if the inclination angle β of the ground terrain is 15° - 20°, then L = H2 / 1.487; if the inclination angle β of the ground terrain is 5° - 10°, then L = H2 / 1.13. By presetting a quick calculation formula for the inclination angle β of the ground terrain within a specific range, the calculation process can be further simplified and the positioning efficiency can be improved. Quickly determining the horizontal distance L according to different terrain inclination angles β can quickly locate the actual drilling point position of the stay cable 1 anchor, reduce the construction time and cost, and at the same time ensure the reasonable installation angle of the stay cable 1 and improve the stability and reliability of the structure. In actual application, a β-L relationship curve atlas can be established, and the value can be quickly checked by the graphical method during construction.

[0051] In one embodiment, it further includes: verifying the horizontal distance between the actual drilling point position and the theoretical drilling point according to the theoretical drilling point position coordinates and the actual drilling point position coordinates. If the error exceeds the preset value, the horizontal distance between the actual drilling point position and the theoretical drilling point is determined again. By verifying the horizontal distance between the actual drilling point position and the theoretical drilling point, the positioning accuracy can be ensured, the construction error can be reduced, the stability and reliability of the structure can be improved, and at the same time, rework caused by positioning errors can be avoided, saving construction time and cost.

[0052] Specifically, the calculated theoretical drilling point coordinates (X1, Y1) and the actual drilling point coordinates (X2, Y2) are obtained synchronously, and the horizontal distance deviation is verified through the distance formula When ΔL exceeds the allowable threshold, the error analysis step is started, and the terrain parameters are re-collected and recalculated.

[0053] In one embodiment, it further includes:

[0054] When the elevation of the actual installation position of the stay cable 1 anchor rod is lower than the first height, as Figure 2 shown, install the vertical rod 7 on the ground in the vertical direction at the position of the theoretical drilling point; then install a laser on the vertical rod 7 at the position of the theoretical drilling point, and adjust the irradiation angle of the laser to the installation angle α of the stay cable 1; then, start the laser, and the irradiation point of the laser on the ground is the actual drilling point position of the stay cable 1 anchor rod.

[0055] When the elevation of the actual installation position of the stay cable 1 anchor rod is lower than the first height, as Figure 4 shown, install the vertical rod 7 on the ground between the position of the theoretical drilling point and the installation position of the end column 3; then, according to the installation angle α of the stay cable 1 and the horizontal distance between the position of the theoretical drilling point and the installation position of the end column 3, obtain the theoretical intersection point of the vertical rod 7 and the stay cable 1, install a laser on the vertical rod 7 at the theoretical intersection point of the vertical rod 7 and the stay cable 1, and adjust the irradiation angle of the laser to the installation angle α of the stay cable 1; then, start the laser, and the irradiation point of the laser on the ground is the actual drilling point position of the stay cable 1 anchor rod. In this embodiment, the installation angle α of the stay cable 1 is 45°, and the vertical rod 7 is installed at the midpoint position between the position of the theoretical drilling point and the installation position of the end column 3, that is, the distance between the vertical rod 7 and the end column 3 is half of the height of the end column 3, which is convenient for calculation.

[0056] Quickly determining the actual drilling point position through the laser can improve the positioning efficiency, reduce the dependence on the terrain, ensure a reasonable installation angle of the stay cable 1 at the same time, improve the stability and reliability of the structure, and meet the installation requirements of the photovoltaic support under complex terrain conditions.

[0057] The positioning method for the drilling point of the stay cable 1 anchor rod of the flexible photovoltaic support applicable to the rugged terrain environment proposed in this embodiment is obtained by using two schemes: the empirical method and the laser dotting method. When the terrain elevation of the anchor rod installation position is higher than the bottom elevation of the end column, the elevation of the theoretical anchor rod drilling point is higher than the elevation of the actual drilling point. When the terrain elevation of the top of the anchor rod is lower than the bottom elevation of the end column, the elevation of the theoretical anchor rod drilling point is lower than the elevation of the actual drilling point. In different situations, the positioning method provided in this embodiment can quickly determine the coordinates of the anchor rod, avoid the site leveling process, reduce the damage to the mountain slope environment ecology, improve the work efficiency, and meet the requirements for building a photovoltaic power station in complex terrain.

[0058] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A positioning method for a flexible photovoltaic support, characterized in that It includes the following steps: Determine the installation position of the end column (3), and record the bottom elevation of the end column (3) as the first height H1; According to the installation position of the end column (3), the height of the end column (3), and the installation angle α between the stay cable (1) and the end column (3), determine the theoretical drilling point position of the stay cable (1) anchor rod in the horizontal plane where the bottom of the end column (3) is located, and record the height of the theoretical drilling point position from the ground in the vertical direction as the second height H2; According to the inclination angle β of the ground terrain, the second height, and the installation angle of the stay cable (1), determine the actual drilling point position of the stay cable (1) anchor rod.

2. The positioning method of the flexible photovoltaic support according to claim 1, wherein When the elevation of the actual installation position of the stay cable (1) anchor rod is lower than the first height, the horizontal distance L between the actual drilling point position and the theoretical drilling point is L = H2 / (tanα - tanβ).

3. The positioning method of the flexible photovoltaic support according to claim 1, characterized in that When the elevation of the actual installation position of the stay cable (1) anchor rod is higher than the first height, the horizontal distance L between the actual drilling point position and the theoretical drilling point is L = H2 / (tanα + tanβ).

4. The positioning method of the flexible photovoltaic support according to any one of claims 1 to 3, characterized in that, The installation angle α of the stay cable (1) is 45°.

5. The positioning method of the flexible photovoltaic support according to claim 4, characterized in that, When the elevation of the actual installation position of the stay cable (1) anchor rod is lower than the first height, if the inclination angle β of the ground terrain is 35° - 40°, then L = 3.3H2; If the inclination angle β of the ground terrain is 25° - 27°, then L = 2H2; If the inclination angle β of the ground terrain is 15° - 20°, then L = 1.3H2; If the inclination angle β of the ground terrain is 5° - 10°, then L = 1.1H2.

6. The positioning method of the flexible photovoltaic support according to claim 4, wherein When the elevation of the actual installation position of the stay cable (1) anchor rod is higher than the first height, if the inclination angle β of the ground terrain is 35° - 40°, then L = H2 / 1.767; If the inclination angle β of the ground terrain is 25° - 27°, then L = H2 / 1.315; If the inclination angle β of the ground terrain is 15° - 20°, then L = H2 / 1.487; If the inclination angle β of the ground terrain is 5° - 10°, then L = H2 / 1.

13.

7. The positioning method of the flexible photovoltaic support according to claim 2 or 3, characterized in that It also includes: Verify the horizontal distance between the actual drilling point position and the theoretical drilling point according to the coordinates of the theoretical drilling point position and the actual drilling point position. If the error exceeds the preset value, re - determine the horizontal distance between the actual drilling point position and the theoretical drilling point.

8. The positioning method of the flexible photovoltaic support according to any one of claims 1 to 3, characterized in that, It also includes: When the elevation of the actual installation position of the stay cable (1) anchor rod is lower than the first height, install a vertical rod (7) on the ground in the vertical direction of the theoretical drilling point position; Install a laser at the theoretical drilling point position on the vertical rod (7), and adjust the irradiation angle of the laser to the installation angle α of the stay cable (1); Start the laser, and the irradiation point of the laser on the ground is the actual drilling point position of the stay cable (1) anchor rod.

9. The positioning method of the flexible photovoltaic support according to any one of claims 1 to 3, characterized in that, It also includes: When the elevation of the actual installation position of the stay cable (1) anchor rod is lower than the first height, install a vertical rod (7) on the ground between the theoretical drilling point position and the installation position of the end column (3); According to the installation angle α of the stay cable (1) and the horizontal distance between the theoretical drilling point position and the installation position of the end column (3), the theoretical intersection point of the vertical rod (7) and the stay cable (1) is obtained. A laser is installed at the theoretical intersection point of the vertical rod (7) and the stay cable (1) on the vertical rod (7), and the irradiation angle of the laser is adjusted to the installation angle α of the stay cable (1). Start the laser, and the irradiation point of the laser on the ground is the actual drilling point position of the stay cable (1) anchor rod.

10. The positioning method of the flexible photovoltaic support according to claim 9, wherein The installation angle α of the stay cable (1) is 45°, and the vertical rod (7) is installed on the ground at the midpoint between the theoretical drilling point position and the installation position of the end column (3).

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