CN114915240B - Photovoltaic power generation support system and installation method thereof - Google Patents
Photovoltaic power generation support system and installation method thereof Download PDFInfo
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- CN114915240B CN114915240B CN202210322854.6A CN202210322854A CN114915240B CN 114915240 B CN114915240 B CN 114915240B CN 202210322854 A CN202210322854 A CN 202210322854A CN 114915240 B CN114915240 B CN 114915240B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/10—Supporting structures directly fixed to the ground
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S30/00—Structural details of PV modules other than those related to light conversion
- H02S30/10—Frame structures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
本发明公开一种光伏发电支架系统，包括光伏板组件以及柔性光伏支架，柔性光伏支架用于承载光伏板组件。柔性光伏支架包括至少一跨，且每跨包括调形索及稳定索。其中，调形索用于在受到向第一方向的第一作用力时提供与第一方向相反的第二方向上的反向合力以抵消第一作用力，稳定索用于在受到与第二方向的第二作用力时提供第一方向上的反向合力以抵消第二作用力。
The invention discloses a photovoltaic power generation support system, which includes a photovoltaic panel assembly and a flexible photovoltaic support, and the flexible photovoltaic support is used to carry the photovoltaic panel assembly. The flexible photovoltaic support includes at least one span, and each span includes a shape-adjusting cable and a stabilizing cable. Wherein, the shape-adjusting cable is used to provide a reverse resultant force in the second direction opposite to the first direction to counteract the first force when receiving the first force in the first direction, and the stabilizing cable is used for receiving the second force in the first direction. The second acting force in the first direction provides the opposite resultant force in the first direction to counteract the second acting force.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation bracket system and an installation method thereof.
Background
In recent years, photovoltaic power generation technology has been rapidly developed, which allows high-quality project land resources to be rapidly consumed. In order to meet the increasingly vigorous market demands and save investment cost, the construction of a centralized photovoltaic power station by utilizing non-quality project land such as deserts, hills, intertidal zones, water pools and the like becomes a main development trend in the field of photovoltaic power generation.
In order to accommodate such complex topography and installation environments, large-span flexible photovoltaic brackets have gained increasing attention and application. The large-span flexible support system can fully utilize the space under the support system, and the steel consumption and the input cost are low, so that the support system is a rapidly developing technology.
The load born by the photovoltaic module support structure mainly comprises the dead weight of materials, wind load and snow load in all directions and earthquake load. The load is transferred downwards layer by layer through the photovoltaic panel and the support, and the direction of the load can be downwards, upwards or at a certain angle with the horizontal direction. In order to better bear the load, the existing flexible support mostly adopts a single-layer cable structure system and a rigid frame/truss combination, and part of the flexible support is provided with a two-layer cable structure system so as to better bear the downward load.
The existing flexible support can bear vertical gravity load and snow load of the assembly well, but the bearing capacity of the existing flexible support to negative wind pressure is poor, and the negative wind pressure often causes remarkable vibration of the whole structure of the flexible support, so that the flexible support and the photovoltaic panel assembly are damaged under the action of external force.
Disclosure of Invention
In view of some or all of the problems of the prior art, an aspect of the present invention provides a photovoltaic power generation support system, comprising:
a photovoltaic panel assembly; and
the flexible photovoltaic support is used for bearing the photovoltaic panel assembly and comprises at least one span, wherein each span comprises:
each portal structure comprises a stand column and a cross beam, and the photovoltaic panel assembly is arranged between the two portal frames;
the two ends of the shape adjusting rope are respectively connected to the top ends of the upright posts of the two door-shaped structures, and the shape adjusting rope is deviated downwards to form an arc-shaped structure; and
the two ends of the stabilizing rope are respectively connected to the middle sections of the upright posts of the two door-shaped structures,
and the stabilizing rope deviates upwards to form an arc-shaped structure.
Further, the photovoltaic panel assembly is arranged between the two portal frames through the mounting cable, and two ends of the mounting cable are respectively connected to the cross beams of the two portal frames.
Further, the installation cable comprises an upper installation cable and a lower installation cable, the installation cables are horizontally arranged, and a height difference exists between the upper installation cable and the lower installation cable, so that an included angle gamma is formed between the photovoltaic panel assembly and the horizontal plane.
Further, at least one first stress node is arranged on the shape-adjusting cable, when the shape-adjusting cable is installed, an included angle alpha of the shape-adjusting cable at the first stress node is smaller than 180 degrees, and when external force is applied, the two side cables of the included angle provide counter force;
at least one second stress node is arranged on the stable rope, an included angle beta of the stable rope at the second stress node is smaller than 180 degrees when the stable rope is installed, and the second stress nodes are in one-to-one correspondence connection with the first stress nodes through supporting trusses; and
the upper mounting cable comprises at least one third stress node, the lower mounting cable comprises at least one fourth stress node, and the third stress node and the fourth stress node are connected with the first stress nodes in one-to-one correspondence through supporting trusses.
Further, at least one second stress node arranged in the middle section of the stabilizing rope coincides with the corresponding first stress node.
Further, the main body structure further comprises anchoring points which are arranged at two ends of the flexible photovoltaic bracket and are connected with the portal frames at two ends through the anchoring diagonal draw bars.
Further, the stabilizing rope of the flexible photovoltaic bracket is an integral body, an arc-shaped structure is formed in a span by adjusting the direction of the guy rope guiding device on the upright post, two ends of the stabilizing rope are connected to the top ends of the anchoring points, and an included angle theta is formed between the two ends of the stabilizing rope and the horizontal plane.
Further, the included angle θ is determined by the total area Av of the photovoltaic panel assembly between two adjacent portal frames, the included angle γ, the allowable stress [ σ ] of the stabilizer cable, and the cross-sectional area As of the stabilizer cable.
Further, the upright post is made of prefabricated pipe piles, I-steel, square steel, round steel or cast-in-situ reinforced concrete pile posts; and/or
The cross beam is made of reinforced concrete beams or I-steel square steel.
Further, the total span range of the photovoltaic power generation support system is 10m to 500m, and the distance of each span is 5 to 50 m.
Another aspect of the present invention provides a method for installing a photovoltaic power generation rack system as described above, comprising:
installing an upper installation cable and a lower installation cable according to the calculated installation positions, and applying initial pulling force with a specified size to enable the upper installation cable and the lower installation cable to be in a horizontal state;
installing a shape adjusting cable and a supporting truss;
mounting the photovoltaic panel assembly on the upper mounting cable and the lower mounting cable;
adjusting the tension of the shape adjusting cable until the upper deflection of the photovoltaic panel assembly reaches a preset deflection; and
installing a stable rope, and adjusting the tension of the stable rope until the photovoltaic panel assembly is in a horizontal state.
According to the photovoltaic power generation support system and the installation method thereof, the stability of the structure under different incoming wind actions is kept by arranging the shape adjusting cable providing upward counter force and the stabilizing cable providing downward counter force under the plate of the photovoltaic plate assembly. The photovoltaic power generation support system can resist vertical loads such as dead weight and snow pressure, and can resist positive wind pressure and negative wind pressure, so that the photovoltaic power generation support system can keep a horizontal state in daily operation, can keep small deformation when suffering from excessive wind load, the horizontal stability of the structure is greatly improved, and the member fatigue caused by excessive vibration is reduced.
Drawings
To further clarify the above and other advantages and features of embodiments of the present invention, a more particular description of embodiments of the invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. In the drawings, for clarity, the same or corresponding parts will be designated by the same or similar reference numerals.
FIG. 1 is a schematic diagram of a prior art large-span photovoltaic module;
FIG. 2 shows a schematic structural view of a photovoltaic power generation rack system according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of the downward load and forward wind force of a photovoltaic power generation stand system according to one embodiment of the present invention;
FIG. 4 illustrates a schematic diagram of the force transfer of a photovoltaic power generation stand system during negative wind action in accordance with one embodiment of the present invention;
FIG. 5 shows a schematic structural view of a support truss of a photovoltaic power generation rack system according to an embodiment of the present invention;
FIG. 6 shows a schematic structural view of a cable guide of a photovoltaic power generation rack system according to an embodiment of the present invention;
FIG. 7 illustrates a schematic view of the installation position of an installation cable of a photovoltaic power generation rack system according to an embodiment of the present invention; and
fig. 8 shows a flowchart of a method of installing a photovoltaic power generation rack system according to an embodiment of the present invention.
Detailed Description
In the following description, the present invention is described with reference to various embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details, or with other alternative and/or additional methods, materials, or components. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention. Similarly, for purposes of explanation, specific numbers, materials and configurations are set forth in order to provide a thorough understanding of the embodiments of the invention. However, the invention is not limited to these specific details. Furthermore, it should be understood that the embodiments shown in the drawings are illustrative representations and are not necessarily drawn to scale.
Reference throughout this specification to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.
It should be noted that the embodiments of the present invention describe the process steps in a specific order, however, this is merely to illustrate the specific embodiment and not to limit the order of the steps. In contrast, in various embodiments of the present invention, the order of the steps may be adjusted according to process adjustments.
In this application, the term "negative wind pressure" means that wind acts under the assembly, creating an upward lifting force. In an embodiment of the present invention, the photovoltaic panel assembly extends in the east-west direction and faces south, and therefore, in the present application, the term "positive wind pressure" refers to the southward wind, and the term "negative wind pressure" refers to the northbound wind.
Fig. 1 shows a schematic structural diagram of a large-span photovoltaic bracket in the prior art. As shown in fig. 1, the existing large-span photovoltaic bracket mainly comprises a rigid frame 001, a mounting cable 002, a shape-adjusting cable 003 and an inter-cable support truss 004. The photovoltaic panel assembly is mounted on the mounting cable 002. Under the action of the shape-adjusting cable 003, the large-span photovoltaic bracket can well bear vertical gravity load and snow load of the photovoltaic panel assembly, but the shape-adjusting cable 003 can only bear tension, and the capacity of bearing negative wind pressure can only depend on the pretension of the mounting cable 002, but when the mounting cable exerts larger prestress, excessive upward deflection is generated, and the tension of the cable is further increased. In order to solve the problem, the resistance of the photovoltaic bracket to wind pressure of wind direction is enhanced so as to avoid remarkable vibration of a cable structure system caused by wind load and wind pressure and further avoid the damage of structures such as the bracket, a photovoltaic panel assembly and the like under the action of external force. In particular, the shape-adjusting cable is used for providing a reverse resultant force in a second direction opposite to the first direction when receiving a first force in the first direction so as to counteract the first force; and the stabilizing cable is used for providing a resultant force in the opposite direction of the first direction when receiving a second force in the second direction so as to counteract the second force. In an embodiment of the invention, the first direction refers to a forward wind direction, which may be understood as a downward direction perpendicular to the photovoltaic panel assembly, and the second direction refers to a reverse wind direction, which may be understood as an upward direction perpendicular to the photovoltaic panel assembly.
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Fig. 2 shows a schematic structural diagram of a photovoltaic power generation support system according to an embodiment of the present invention. As shown in fig. 2, a photovoltaic power generation support system includes a plurality of rows of photovoltaic panel assemblies 100 and a flexible photovoltaic support. The photovoltaic panel assembly 100 is mounted on the flexible photovoltaic bracket, and respectively bears downward and upward loads through the shape adjusting cable 300 and the stabilizing cable 400.
The flexible photovoltaic brackets extend east and west and are marked as a row. The flexible photovoltaic brackets between the different rows may be connected by trusses, as shown in fig. 5. The flexible photovoltaic bracket includes at least two portal frames 201, and the photovoltaic panel assembly 100 is installed between adjacent two portal frames 201. In one embodiment of the present invention, the portal frame 201 is composed of two upright posts and a cross beam, which can bear the load of two adjacent span cable bodies, and after synthesis, mainly forms a vertical load and a horizontal load under the action of horizontal wind force. In one embodiment of the invention, the upright post can be made of precast tubular piles, I-steel, square steel, round steel or cast-in-situ reinforced concrete piles, and the cross beam can be made of reinforced concrete beams or I-steel square steel.
In one embodiment of the present invention, the photovoltaic panel assembly 100 is disposed between the two portal frames 201 through the mounting cable 500, and both ends of the mounting cable 500 are respectively connected to the cross members of the two portal frames 201. To ensure that the photovoltaic panel assembly 100 can sufficiently receive sunlight, an angle γ is typically formed between the photovoltaic panel assembly 100 and a horizontal plane, and therefore, in an embodiment of the present invention, the mounting cable includes an upper mounting cable and a lower mounting cable, the upper mounting cable and the lower mounting cable are horizontally disposed, and a height difference exists between the upper mounting cable and the lower mounting cable. Specifically, for example, both ends of the lower mounting cable may be directly connected to the cross member, and both ends of the upper mounting cable may be connected to a fixing structure protruding from the cross member.
Two adjacent portal frames form a span, and the flexible photovoltaic bracket 200 includes at least one span. In one embodiment of the present invention, the span of the photovoltaic power generation support system is determined by the photovoltaic panel assembly string, and the span of 10m to 1000m can be adapted, and at the same time, the length of each span included in the photovoltaic power generation support system can be the same or different, wherein the length of each span, that is, the distance between two adjacent portal frames can be 5 to 50m, and in particular, the span can be determined according to the latitude and the topography condition of the place where the photovoltaic power generation support system is located. Furthermore, in a further embodiment of the invention, the distance between the different rows, i.e. north-south, of photovoltaic panel assemblies is also determined according to the latitude and topography conditions of the place where the photovoltaic power generation rack system is located.
The shape adjusting rope 300 is used for providing upward return force, and under the action of dead weight and forward wind of the photovoltaic power generation support system, both sides of the shape adjusting rope 300 generate pulling force so as to provide upward reverse resultant force at the node. As shown in fig. 2, two ends of the shape adjusting cable 300 are respectively connected to the top ends of the columns of the adjacent two door-shaped structures 201, and the shape adjusting cable 300 is downwardly deviated to form an arc-shaped structure. In one embodiment of the present invention, anchors are further disposed at both ends of the shape-adjusting cable 300, so that the tension of the adjusting cable can be adjusted by the telescopic adjusting function of the anchors. In yet another embodiment of the present invention, at least one first stress node 301 is disposed on the cable 300, and the distances between the first stress nodes 301 may be equal or different.
The stabilizing cable 400 is used for providing downward return force, and when negative wind pressure is applied, the two sides of the stabilizing cable 400 generate pulling force so as to provide downward reverse resultant force at the node. As shown in fig. 2, two ends of the stabilizing wire 400 are respectively connected to middle sections of the columns of two adjacent gate-shaped structures 201, and the stabilizing wire 400 is upwardly deviated to form an arc-shaped structure. In one embodiment of the present invention, two ends of the stabilizing cable 400 are connected to the guy cable guiding device on the upright, so that the stabilizing cable 400 in the whole photovoltaic power generation bracket system is integrated. Fig. 6 shows a schematic structural view of a cable guide device of a photovoltaic power generation bracket system according to an embodiment of the present invention. As shown in fig. 6, the cable guide device may change the extending direction of the stabilizer cable 400. In one embodiment of the present invention, anchors are further disposed at two ends of the stabilizing cable 400, so that the tension of the stabilizing cable can be adjusted through the telescopic adjustment function of the anchors. In yet another embodiment of the present invention, at least one second stress node 401 is disposed on the stabilizing cable 400, where the second stress node 401 corresponds to the first stress node 301 in a vertical direction.
In one embodiment of the present invention, the stabilizing cable 400, the tuning cable 300, and the mounting cable 500 are connected by a support truss 304 and transmit loads. Fig. 5 shows a schematic structural view of a support truss of a photovoltaic power generation rack system according to an embodiment of the present invention. As shown in fig. 5, the support truss 304 has a "Y" shape. The two ends of the "|" portion are respectively connected with the second stress node 401 and the corresponding first stress node 301, so as to further realize load transmission. Specifically, the included angle α of the tuning rope 300 at any first stress node 301 is smaller than 180 degrees, the dead weight of the photovoltaic power generation bracket system and the positive wind form a downward force, the downward force is transferred downward through the support truss 304, at this time, the two sides of the tuning rope 300 generate a pulling force, so that an upward reverse resultant force is provided at the first stress node 301, the included angle β of the stabilizing rope 400 at any second stress node 401 is smaller than 180 degrees, and when an upward force such as a negative wind pressure is received, the two sides of the stabilizing rope 400 generate a pulling force, so that a downward reverse resultant force is provided at the second stress node 401. Fig. 3 and 4 are schematic diagrams of downward load and force modulation when positive wind is acting and schematic diagrams of force modulation when negative wind is acting of a photovoltaic power generation support system according to an embodiment of the present invention.
The V-shaped portions of the support truss 304 are connected to the upper and lower mounting cables, respectively. Specifically, a third stress node 511 is further disposed at a position of the upper mounting cable corresponding to the first stress node, a fourth stress node 521 is disposed at a position of the lower mounting cable corresponding to the first stress node, and the top ends of the V-shaped portions of the support truss 304 are connected to the third stress node 511 and the fourth stress node 521, respectively. In order to prevent the photovoltaic panel assembly from generating horizontal displacement under the condition of self-weight flexible support, the horizontal component force of the support truss 304 at the third stress node 511 and the fourth stress node 521 is the same, that is, the installation positions of the upper installation cable and the lower installation cable need to meet a certain condition. Fig. 7 shows a schematic view of the installation position of the installation cable of the photovoltaic power generation bracket system according to an embodiment of the present invention. As shown in FIG. 7, when the "V" portion of the lattice 304 is symmetrical with respect to the "I" portion thereof, i.e.In this case, the above conditions may be satisfied, and there are:
wherein ,
x 1 a horizontal distance between the fourth stressed node and the corresponding first stressed node;
x 2 a horizontal distance between the third stressed node and the corresponding first stressed node;
h is the vertical distance between the fourth stressed node and the corresponding first stressed node;
l is the distance between the fourth stressed node and the corresponding third stressed node; and
and gamma is an included angle between the photovoltaic panel assembly and the horizontal plane.
In yet another embodiment of the present invention, the stabilizing cable and the shape adjusting cable may share a length of the guy cable in the midspan horizontal section, that is, at least one second stress node 401 disposed in the middle section of the stabilizing cable 400 coincides with the corresponding first stress node 301.
In order to better withstand the load, in one embodiment of the invention, an anchor point 202 is also provided. The anchoring points 202 are arranged at two ends of the flexible photovoltaic bracket and are connected with the portal frames 201 at two ends through the anchoring diagonal rods 221, so that horizontal loads such as vertical loads such as inclined loads and dead weights and wind loads transferred by the anchoring diagonal rods 221 can be borne. The anchor points may be, for example, struts, anchor piles, etc. which are fully or partially buried under the ground. In one embodiment of the invention, the stabilizing rope of the flexible photovoltaic bracket is an integral body, an arc-shaped structure is formed in each span by adjusting the direction of the guy rope guiding device on the upright post, two ends of the stabilizing rope are connected to the top end of the anchoring point, and the included angle theta between the two ends of the stabilizing rope and the horizontal plane can be adjusted by the guy rope guiding device. In one embodiment of the invention, the total area Av of the photovoltaic panel assembly between two adjacent portal frames, the included angle gamma of the photovoltaic panel assembly and the horizontal plane, and the allowable stress [ sigma ] of the stabilizing rope can be used for]Cross-sectional area As of the stabilizing rope, air density ρ and typical wind speed v on statistical probability 0 Determining the included angle theta:
fig. 8 shows a flowchart of a method of installing a photovoltaic power generation rack system according to an embodiment of the present invention. As shown in fig. 8, a method for installing a photovoltaic power generation bracket system includes:
first, in step 801, a post is installed. Installing a door-shaped frame and side span struts according to a preset span;
next, at step 802, the mounting cable is installed. According to the calculation method, the installation positions of the upper installation cable and the lower installation cable are determined and installed, and then initial pulling force with a specified size is applied to enable the upper installation cable and the lower installation cable to be in a horizontal state, wherein the initial pulling force is usually 20-50KN;
next, at step 803, the tuning cables and the support trusses are installed. Connecting the shape adjusting rope to the door-shaped frame, and installing a support truss between the installation rope and a stress node of the shape adjusting rope;
next, at step 804, a photovoltaic panel assembly is installed. The photovoltaic panel assembly is mounted on the mounting cable, specifically, the upper mounting cable and the lower mounting cable, and certain downwarping is generated at the moment;
next, at step 805, the tuning cable is adjusted. Adjusting the tension of the shape adjusting cable until the upper deflection of the photovoltaic panel assembly reaches a preset deflection through the telescopic adjusting function of the anchors at the two ends of the shape adjusting cable, so that the photovoltaic panel assembly is bent upwards in a certain inverted arch, wherein the preset deflection takes a value range of 1/300 to 1/150; and
finally, in step 806, a stabilizing cable is installed. Installing a stable rope, and adjusting the tension of the stable rope through the telescopic adjusting function of the anchors at the two ends of the stable rope to enable the stable rope to generate a certain downward tension until the photovoltaic panel assembly is in a horizontal state.
The photovoltaic power generation support system is installed, and the installation cable, the shape adjusting cable and the stabilizing cable all have pretension. The cable tension is horizontal when no wind load acts, the cable tension is increased to resist the downward external force transmitted by the support truss when positive wind load acts, and the cable tension is increased to resist the upward external force transmitted by the support truss when negative wind load acts.
The shape-adjusting rope and the stabilizing rope can be shared by a section of the horizontal inhaul cable in the midspan, the shape-adjusting rope is in a higher stress state when the inhaul cable has positive wind pressure, and the stabilizing rope is in an initial tension state. When the back wind is acted, the stable cable is in a higher stress state, and the shape-adjusting cable is in a loose state except the common section of the middle section. The middle section sharing can reduce the inhaul cable system, namely the shape adjusting cable and the stabilizing cable, occupy the space under the plate, so that more operation space can be reserved under the plate for planting, breeding and other operations.
While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. It will be apparent to those skilled in the relevant art that various combinations, modifications, and variations can be made therein without departing from the spirit and scope of the invention. Thus, the breadth and scope of the present invention as disclosed herein should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.
Claims (13)
1. A photovoltaic power generation support system, comprising:
the photovoltaic panel assembly is arranged on the mounting cable, wherein the mounting cable comprises an upper mounting cable and a lower mounting cable, the upper mounting cable comprises at least one third stress node, and the lower mounting cable comprises at least one fourth stress node; and
a flexible photovoltaic support configured to carry the photovoltaic panel assembly, the flexible photovoltaic support comprising at least one span, wherein each span comprises a plurality of photovoltaic modules disposed under the photovoltaic panel assembly:
the shape adjusting cable is configured to provide a reverse resultant force in a second direction opposite to the first direction when receiving a first acting force in the first direction so as to offset the first acting force, wherein at least one first stress node is arranged on the shape adjusting cable, the third stress node and the fourth stress node are connected with the first stress node in a one-to-one correspondence manner through a support truss, an included angle of the shape adjusting cable at the first stress node is smaller than 180 degrees when being installed, and opposite sides of the included angle provide counter force when being subjected to external force; and
the stabilizing cable is configured to provide a reverse resultant force in the first direction when receiving a second acting force in the second direction so as to offset the second acting force, at least one second stressed node is arranged on the stabilizing cable, an included angle of the stabilizing cable at the second stressed node is smaller than 180 degrees when being installed, and the second stressed nodes are connected with the first stressed nodes in a one-to-one correspondence manner through supporting trusses.
2. The photovoltaic power generation rack system of claim 1, wherein each bay further comprises:
and the photovoltaic panel assembly is arranged between the two portal frames.
3. The photovoltaic power generation support system of claim 2, wherein:
two ends of the shape adjusting rope are respectively connected to the top ends of the upright posts of the two door-shaped frames, and the shape adjusting rope deviates downwards to form an arc-shaped structure; and
the two ends of the stabilizing rope are respectively connected to the middle sections of the upright posts of the two portal frames, and the stabilizing rope deviates upwards to form an arc-shaped structure.
4. The photovoltaic power generation rack system of claim 2, wherein the photovoltaic panel assembly is disposed between the two portal frames by a mounting cable, both ends of the mounting cable being connected to the cross beams of the two portal frames, respectively.
5. The photovoltaic power generation support system of claim 4, wherein the mounting cable comprises an upper mounting cable and a lower mounting cable, the mounting cable being horizontally disposed with a height differential between the upper and lower mounting cables such that the photovoltaic panel assembly forms an angle with the horizontal。
6. The photovoltaic power generation support system of claim 1, wherein at least one second force node disposed in a midsection of the stabilizing cable coincides with a corresponding first force node.
7. The photovoltaic power generation bracket system of claim 1, wherein the mounting positions of the profile modifying cable and the upper and lower mounting cables satisfy:
wherein ,
a horizontal distance between the fourth stressed node and the corresponding first stressed node;
a horizontal distance between the third stressed node and the corresponding first stressed node;
a vertical distance between the fourth stressed node and the corresponding first stressed node;
a distance between the fourth stressed node and a corresponding third stressed node; and
is an included angle between the photovoltaic panel assembly and the horizontal plane.
8. The photovoltaic power generation support system of claim 1, wherein the flexible photovoltaic support further comprises side span anchor points disposed at both ends of the flexible photovoltaic support and connected to the portal frames at both ends by anchor diagonal braces.
9. The photovoltaic power generation support system of claim 8, wherein the flexibleThe stabilizing rope of the photovoltaic bracket is an integral body, an arc-shaped structure is formed in each span by adjusting the direction of a guy rope guiding device on the upright post, two ends of the stabilizing rope are connected to the top ends of the anchoring points, and an included angle exists between the two ends of the stabilizing rope and the horizontal plane。
10. The photovoltaic power generation rack system of claim 9, wherein the included angle isBy the total area of the photovoltaic panel assembly between two adjacent portal frames +.>The included angle between the photovoltaic panel component and the horizontal plane is +.>Allowable stress of the stabilizing rope>Cross-sectional area of the stabilizing rope->And (3) determining:
wherein , for air density->Is a statistically probabilistic representative wind speed.
11. The photovoltaic power generation support system of claim 2, wherein the upright is made of prefabricated pipe piles, I-steel, square steel, round steel or cast-in-place reinforced concrete piles; and/or
The cross beam is made of reinforced concrete beams or I-steel square steel.
12. The photovoltaic power generation rack system of claim 1, wherein the photovoltaic power generation rack system has a total span ranging from 10m to 1000m and a distance per span varying from 5 to 50 m.
13. A method of installing a photovoltaic power generation rack system as claimed in any one of claims 1 to 12, comprising:
installing an upper installation cable and a lower installation cable according to the calculated installation positions, and applying initial pulling force with a specified size to enable the upper installation cable and the lower installation cable to be in a horizontal state;
installing a shape adjusting cable and a supporting truss;
installing the photovoltaic panel assembly on the upper installation cable and the lower installation cable, and adjusting the tension of the shape adjusting cable until the upper deflection of the photovoltaic panel assembly reaches a preset value; and
installing a stable rope, and adjusting the tension of the stable rope until the photovoltaic panel assembly is in a horizontal state.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210322854.6A CN114915240B (en) | 2022-03-30 | 2022-03-30 | Photovoltaic power generation support system and installation method thereof |
| CN202311266679.4A CN117277927A (en) | 2022-03-30 | 2022-03-30 | Photovoltaic power generation support system and installation method thereof |
| PCT/CN2023/081568 WO2023185470A1 (en) | 2022-03-30 | 2023-03-15 | Photovoltaic power generation support system and installation method thereof |
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| CN202210322854.6A CN114915240B (en) | 2022-03-30 | 2022-03-30 | Photovoltaic power generation support system and installation method thereof |
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| CN202311266679.4A Division CN117277927A (en) | 2022-03-30 | 2022-03-30 | Photovoltaic power generation support system and installation method thereof |
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| CN114915240A CN114915240A (en) | 2022-08-16 |
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| CN202210322854.6A Active CN114915240B (en) | 2022-03-30 | 2022-03-30 | Photovoltaic power generation support system and installation method thereof |
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| CN202311266679.4A Pending CN117277927A (en) | 2022-03-30 | 2022-03-30 | Photovoltaic power generation support system and installation method thereof |
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| WO (1) | WO2023185470A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117277927A (en) * | 2022-03-30 | 2023-12-22 | 亿恒智慧(北京)能源技术有限公司 | Photovoltaic power generation support system and installation method thereof |
| CN115483877A (en) * | 2022-10-12 | 2022-12-16 | 长江勘测规划设计研究有限责任公司 | Angle truss type purlin multirow photovoltaic module cable bearing structure |
| ES2930603B2 (en) * | 2022-11-17 | 2023-04-20 | Aeropuertos Obra Civil S A | SUPPORT STRUCTURE OF PHOTOVOLTAIC SOLAR PANELS AND ASSEMBLY METHOD |
| CN115864951B (en) * | 2022-12-02 | 2024-12-31 | 天合光能股份有限公司 | Photovoltaic system and its flexible support |
| CN219802196U (en) * | 2022-12-26 | 2023-10-03 | 隆基绿能科技股份有限公司 | Photovoltaic support and photovoltaic power station |
| CN116780986B (en) * | 2023-05-06 | 2024-09-20 | 中国水电顾问集团贵阳勘测设计研究院岩土工程有限公司 | Large-span prestress double-layer cable net structure photovoltaic bracket and mounting method thereof |
| CN117375509A (en) * | 2023-09-28 | 2024-01-09 | 中国矿业大学(北京) | A tracking photovoltaic bracket system |
| CN117439542B (en) * | 2023-10-23 | 2024-04-16 | 珠海华成电力设计院股份有限公司 | A photovoltaic flexible support structure with high load-bearing capacity and large span |
| CN117526820B (en) * | 2024-01-08 | 2024-04-16 | 中成空间（深圳）智能技术有限公司 | Flexible photovoltaic cell system and control method thereof |
| CN118012137B (en) * | 2024-04-08 | 2024-06-07 | 汇耀品尚能源科技(嘉兴)有限公司 | Equipment control method for flexible photovoltaic and related device |
| CN118523697B (en) * | 2024-05-20 | 2025-02-14 | 苏州聚晟太阳能科技股份有限公司 | A photovoltaic flexible support structure |
| CN118473305B (en) * | 2024-06-12 | 2024-11-19 | 徐州日托新能源科技有限公司 | Photovoltaic board installation unit stand structure |
| CN119070713B (en) * | 2024-08-26 | 2025-08-05 | 北京城建安装集团有限公司 | Photovoltaic panel for roof and installation method thereof |
| CN118971736B (en) * | 2024-10-18 | 2025-07-29 | 汇耀品尚能源科技(嘉兴)有限公司 | Flexible photovoltaic support and photovoltaic system |
| CN119362974B (en) * | 2024-11-24 | 2025-10-03 | 浙江中新能源发展有限公司 | A photovoltaic agricultural support system that integrates flexible supports with staggered photovoltaic panels and rigid rails |
| CN120110287A (en) * | 2025-04-11 | 2025-06-06 | 汇耀品尚能源科技(嘉兴)有限公司 | A method for installing a flexible tracking photovoltaic bracket |
| CN120729142B (en) * | 2025-08-27 | 2025-11-11 | 无锡钧茂聚晟新能源科技有限公司 | Photovoltaic power generation system based on flexible support |
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| CN114915240A (en) | 2022-08-16 |
| WO2023185470A1 (en) | 2023-10-05 |
| CN117277927A (en) | 2023-12-22 |
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