Photovoltaic flexible support and photovoltaic power generation system

Abstract

The utility model discloses a photovoltaic flexible support and a photovoltaic power generation system, and the photovoltaic flexible support comprises a supporting assembly which comprises a plurality of supporting beams and a plurality of supporting columns, and the supporting beams are disposed at the top ends of the supporting columns; the photovoltaic module is connected with the supporting beam in an insulating manner; the inversion unit is arranged on the supporting assembly and is in insulated connection with the supporting assembly; the lightning arrester is arranged on the supporting assembly and electrically connected with the inversion unit, and the lightning arrester is suitable for being connected to the ground. According to the photovoltaic flexible support provided by the embodiment of the invention, the inversion unit is arranged on the supporting assembly, so that the use number of cables can be reduced, and the use cost of the cables is reduced; the lightning arrester electrically connected with the inversion unit is arranged, and a plurality of components of the photovoltaic flexible support are in insulated connection, so that lightning protection of the inversion unit can be realized, the size of the lightning protection grounding looped network can be reduced, the lightning protection cost can be reduced, and the cost can be saved.

Description

Technical Field

[0001] This application relates to the technical field of photovoltaic power generation, and in particular to a flexible photovoltaic support and a photovoltaic power generation system. Background Art

[0002] Photovoltaic power generation grid connection usually adopts a centralized inverter scheme or a string inverter scheme. In related technologies, the flexible photovoltaic support, the combiner box and the inverter of a traditional photovoltaic power generation system are arranged separately, and a large number of low-voltage AC cables (i.e., the string inverter scheme) or low-voltage DC cables (i.e., the centralized inverter scheme) need to be used, which increases the cable usage cost. Moreover, a large lightning protection grounding loop network needs to be used for overall lightning protection, which increases the lightning protection cost, and there is room for improvement. Summary of the Utility Model

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of this application is to provide a flexible photovoltaic support, which has low cable usage cost and low lightning protection cost, and can save costs.

[0004] This application also provides a photovoltaic power generation system.

[0005] The flexible photovoltaic support according to the first aspect embodiment of this application includes: a support assembly, the support assembly includes a plurality of support beams and a plurality of support columns, and the support beams are arranged at the tops of the support columns; a photovoltaic module, the photovoltaic module is insulatedly connected to the support beam; an inverter unit, the inverter unit is arranged on the support assembly and is insulatedly connected to the support assembly; a lightning arrester, the lightning arrester is arranged on the support assembly and is electrically connected to the inverter unit, and the lightning arrester is adapted to be connected to the ground.

[0006] According to the flexible photovoltaic support of the embodiment of this application, by arranging an inverter unit on the support assembly, the number of cables used can be reduced, and the cable usage cost can be reduced; by arranging a lightning arrester electrically connected to the inverter unit, and the multiple components of the flexible photovoltaic support are insulatedly connected, on the basis of ensuring the reliability and safety of the flexible photovoltaic support, lightning protection for the inverter unit can be realized, the size of the lightning protection grounding loop network can be reduced, and the lightning protection cost can be reduced, thereby saving costs.

[0007] According to some embodiments of this application, the photovoltaic module includes a plurality of photovoltaic panels and a plurality of cables, the photovoltaic panels are installed on the cables, and the cables are connected to the support beam through insulating members.

[0008] In some embodiments, the plurality of cables include a plurality of component cables and a plurality of load-bearing cables, each of the photovoltaic panels is installed on two of the component cables, and one load-bearing cable is arranged between the two component cables, and a rotatable limit seat is provided on the insulating member, and the load-bearing cable cooperates with the limit seat.

[0009] In some embodiments, a fixing seat is further provided on the insulating member, the limiting seat and the first one of the fixing seats have an axial hole, the limiting seat and the other one of the fixing seats have a rotating shaft, the rotating shaft is plugged into and fit with the axial hole, the limiting seat has a limiting ring, the limiting ring is provided on a side surface of the limiting seat close to the load-bearing cable, and the load-bearing cable is suitable for passing through the limiting ring.

[0010] In some embodiments, a surface of the limiting seat on a side close to the load-bearing cable is an arc surface arched toward the load-bearing cable.

[0011] In some embodiments, the photovoltaic flexible support further includes: a wire collection beam, the wire collection beam is arranged on the photovoltaic component or the support component, and the wire collection beam is defined with a wire collection hole suitable for placing a wire harness to protect the wire harness.

[0012] In some embodiments, the photovoltaic flexible support further includes: a hanging member, the hanging member is connected to the cable and defines a mounting groove, and the cable collection beam is installed in the mounting groove.

[0013] In some embodiments, the hanging component includes a hanging body and two hanging rings, the two hanging rings are arranged on opposite sides of the hanging body, and the cables are passed through the two hanging rings in sequence, and the cable collection beam is installed on the hanging body and located between the hanging body and the cables.

[0014] In some embodiments, the photovoltaic flexible support further includes: a mounting beam, one end of which is connected to the support column, and the wiring collection beam is connected to the other end of the mounting beam through the insulating member.

[0015] According to some embodiments of the present application, the photovoltaic flexible bracket also includes: an insulating bracket, which is arranged on the support column and includes a fixed bracket and an installation bracket, the fixed bracket is connected to the support column, the installation bracket is connected to the fixed bracket through an insulating member, and the inverter unit is installed on the installation bracket.

[0016] In some embodiments, the insulating member includes a plurality of insulating members, a portion of the plurality of insulating members extends in a horizontal direction, and another portion of the plurality of insulating members extends in a direction inclined to the horizontal plane.

[0017] According to some embodiments of the present application, the inverter unit is connected to the support beam through an insulator, and the inverter unit is located below the support beam.

[0018] According to some embodiments of the present application, the plurality of support beams include end beams at both ends and middle beams in the middle. Among them, the end of the cable is insulated and connected to the end beam through an insulator, the middle of the cable is insulated and connected to the middle beam through an insulator, and the inverter unit is connected to the middle beam and / or the support column supporting the middle beam through an insulator.

[0019] In some embodiments, the insulator is a suspension insulator and / or a post insulator.

[0020] According to some embodiments of the present application, the photovoltaic flexible support further includes: a grounding member disposed on the support column, a lightning arrester disposed on the support beam, one end of the lightning arrester is connected to the inverter unit through a wire, the other end of the lightning arrester is connected to the grounding member through the wire, and a part of the grounding member is buried in the ground.

[0021] According to some embodiments of the present application, the lightning arrester is a zinc oxide lightning arrester.

[0022] The photovoltaic power generation system according to the second aspect embodiment of the present application includes the photovoltaic flexible support according to the first aspect embodiment of the present application. By adopting the above photovoltaic flexible support, the number of cables used can be reduced, the cost of using cables can be reduced, and lightning protection for the inverter unit can be achieved. The size of the lightning protection grounding loop network can be reduced, and the lightning protection cost can be reduced, thereby saving costs.

[0023] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0025] Figure 1 is a schematic structural diagram of a photovoltaic flexible support according to some embodiments of the present application from a perspective;

[0026] Figure 2 is Figure 1 an enlarged view of structure A in

[0027] Figure 3 is Figure 1 an enlarged view of structure B in

[0028] Figure 4is a schematic structural diagram of a photovoltaic flexible bracket according to some embodiments of the present application at another viewing angle;

[0029] Figure 5 yes Figure 4 A magnified view of the structure in C;

[0030] Figure 6 is a schematic diagram of a partial structure of a photovoltaic flexible bracket at a certain viewing angle according to some embodiments of the present application;

[0031] Figure 7 is a schematic diagram of a partial structure of a photovoltaic flexible bracket according to some embodiments of the present application at another viewing angle;

[0032] Figure 8 is a schematic diagram of a partial structure of a photovoltaic flexible bracket according to other embodiments of the present application;

[0033] Figure 9 is a partial structural schematic diagram of a photovoltaic flexible bracket according to some other embodiments of the present application;

[0034] Figure 10 is a schematic diagram of the working principle of a lightning arrester according to some embodiments of the present application;

[0035] Figure 11 is a partial structural schematic diagram of a photovoltaic power generation system according to some embodiments of the present application;

[0036] Figure 12 It is a schematic diagram of the working principle of a photovoltaic power generation system according to some embodiments of the present application.

[0037] Reference numerals:

[0038] Photovoltaic power generation system 1000, photovoltaic flexible support 100,

[0039] Support assembly 10, support beam 11, end beam 111, middle beam 112, support column 12, limit seat 13, rotating shaft 131, arc surface 132, limit ring 133, fixed seat 14, traction rope 15,

[0040] Photovoltaic assembly 20, photovoltaic panel 21, cable 22, assembly cable 221, load-bearing cable 222, load-bearing frame 23,

[0041] Suspension insulator 30, post insulator 31,

[0042] Insulating bracket 40, fixing bracket 41, mounting bracket 42,

[0043] Hanging member 50, hanging body 51, hanging ring 52,

[0044] Cable collection beam 60, cable collection hole 61, mounting beam 62,

[0045] Inverter unit 70, lightning arrester 80, and grounding member 90. Specific embodiments

[0046] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application.

[0047] In the description of the present application, it should be understood that terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0048] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0049] Reference will be made below to Figures 1 - 12 Describe the photovoltaic flexible support 100 according to an embodiment of the present application.

[0050] As Figures 1 - 12 shown, the photovoltaic flexible support 100 according to an embodiment of the present application includes: a support assembly 10, a photovoltaic module 20, an inverter unit 70, and a lightning arrester 80; the support assembly 10 may include a plurality of support beams 11 and a plurality of support columns 12, and the support beams 11 may be disposed at the top of the support columns 12 (as Figure 1at the upper end shown), and the photovoltaic module 20 can be insulatedly connected to the support beam 11, which can support the photovoltaic module 20 and insulate between the photovoltaic module 20 and the support beam 11, preventing current from passing through the photovoltaic module 20 and the support assembly 10, facilitating the protection of the circuit, and improving the reliability and safety of the photovoltaic flexible bracket 100.

[0051] The inverter unit 70 can be arranged on the support assembly 10 and is insulatedly connected to the support assembly 10, which can insulate between the inverter unit 70 and the support assembly 10, preventing current from passing through the inverter unit 70 and the support assembly 10, improving the protection effect on the circuit. At the same time, the inverter unit 70 can be integrated on the support assembly 10. Compared with the technical solution of arranging a box-type integrated inverter outside the photovoltaic flexible bracket 100, it is beneficial to reduce the cost of the boost equipment and the basic cost of the box-type integrated inverter.

[0052] It can be understood that the inverter unit 70 can be a DC / AC module, that is, the busbar box and the inverter are combined into one module and the DC / AC module is integrated into the support assembly 10. Compared with the technical solution of separately arranging the photovoltaic flexible bracket 100, the busbar box and the inverter, it is beneficial to reduce the number of low-voltage AC cables used and the number of low-voltage DC cables 22 used, and can reduce the cost of cable use.

[0053] The lightning arrester 80 can be arranged on the support assembly 10, the lightning arrester 80 is electrically connected to the inverter unit 70, and the lightning arrester 80 is connected to the ground. When lightning strikes the inverter unit 70 or the inverter unit 70 leaks electricity, the lightning arrester 80 can conduct the current into the ground, improving the protection effect on the circuit, improving the reliability and safety of the photovoltaic flexible bracket 100. And because multiple components of the photovoltaic flexible bracket 100 are insulatedly connected, individual lightning protection for the inverter unit 70 can be achieved. Compared with the technical solution of using a larger lightning protection grounding loop network to protect the photovoltaic flexible bracket 100 from lightning, the size of the lightning protection grounding loop network can be reduced and the lightning protection cost can be reduced.

[0054] For the photovoltaic flexible bracket 100 according to the embodiment of the present application, by arranging the inverter unit 70 on the support assembly 10, the number of cables used can be reduced and the cost of cable use can be reduced; by arranging the lightning arrester 80 electrically connected to the inverter unit 70 and insulatingly connecting multiple components of the photovoltaic flexible bracket 100, on the basis of ensuring the reliability and safety of the photovoltaic flexible bracket 100, lightning protection for the inverter unit 70 can be achieved, the size of the lightning protection grounding loop network can be reduced, and the lightning protection cost can be reduced, thereby saving costs.

[0055] AsFigure 1 , Figure 2 and Figure 3 As shown in Figure 1 , Figure 2 and Figure 3 , according to some embodiments of the present application, the photovoltaic module 20 may include a plurality of photovoltaic panels 21 and a plurality of cables 22. The photovoltaic panels 21 may be mounted on the cables 22. The cables 22 may be connected to the support beam 11 through insulators, which can achieve the connection between the cables 22 and the support beam 11, support the photovoltaic panels 21, and insulate between the cables 22 and the support beam 11 to prevent current from passing through the cables 22 and the support assembly 10, protect the circuit, improve the reliability of the flexible photovoltaic support 100, and improve the safety of the flexible photovoltaic support 100. Among them, the cables 22 may be steel stranded wires, which can improve the strength of the cables 22, enable the cables 22 to bear greater loads, improve the service life of the cables 22, facilitate maintenance, and help save costs.

[0056] As Figure 1 , Figure 2 and Figure 3 shown, according to some embodiments of the present application, the plurality of support beams 11 may include end beams 111 at both ends (such as the front and rear ends shown in Figure 1 ) and middle beams 112 in the middle. The ends of the cables 22 (such as the front end and the rear end shown in Figure 1 ) may be insulated and connected to the end beams 111 through insulators, and the middle part of the cables 22 may be insulated and connected to the middle beams 112 through insulators. That is, the support assembly 10 supports the photovoltaic module 20 through the ends and the middle part of the cables 22, which is beneficial to improving the support effect on the photovoltaic module 20 and enabling the support assembly 10 to carry a photovoltaic module 20 with a greater mass.

[0057] The inverter unit 70 may be connected to the middle beam 112 through an insulator, which can achieve insulation between the inverter unit 70 and the middle beam 112 and connection between the inverter unit 70 and the middle beam 112; or, the inverter unit 70 may be connected to the support column 12 supporting the middle beam 112 through an insulator, which can achieve insulation between the inverter unit 70 and the support column 12 and connection between the inverter unit 70 and the support column 12; or, the inverter unit 70 may be connected to the middle beam 112 and the support column 12 respectively, which is beneficial to improving the connection effect between the inverter unit 70 and the support assembly 10.

[0058] It should be noted that the flexible photovoltaic support 100 further includes a part of support columns 12, and this part of support columns 12 is located on both sides (such as the front and rear sides shown in Figure 1 ) of the plurality of end beams 111 away from the middle beam 112. Each support column 12 in this part of support columns 12 is connected to the end beam 111 through a traction cable 15, which can balance the force of the flexible photovoltaic support 100 at the end beam 111, thereby improving the stability of the flexible photovoltaic support 100.​​​​​​

[0059] As Figure 1 、 Figure 2 and Figure 3 shown, in some embodiments, the insulating member can be a suspension insulator 30, which can improve the mechanical load capacity of the insulating member, effectively disperse the mechanical load of the cable 22, improve the load-bearing capacity of the cable 22, and at the same time improve the wind resistance of the insulating member, which is beneficial to reducing the influence of the environment on the insulating member and facilitating maintenance; the insulating member can be a post insulator 31, which can be installed on a support column (e.g., the support column 12 or the support beam 11), reducing the space occupied by the insulating member and facilitating installation and adjustment.

[0060] It should be noted that the ends of the cable 22 (such as Figure 1 the front end and the rear end shown) can be insulated and connected to the end beam 111 through the suspension insulator 30, the middle part of the cable 22 can be insulated and connected to the middle beam 112 through the post insulator 31; the inverter unit 70 can be insulated and connected to the middle beam 112 through the post insulator 31; alternatively, the inverter unit 70 can be insulated and connected to the support column 12 supporting the middle beam 112 through the suspension insulator 30.

[0061] As Figure 1 、 Figure 2 、 Figure 3 and Figure 5 shown, in some embodiments, the multiple cables 22 can include multiple component cables 221 and multiple load-bearing cables 222. Each photovoltaic panel 21 can be installed on two component cables 221, that is, the two component cables 221 are parallel and spaced apart from each other. The two sides of each photovoltaic panel 21 (such as Figure 2 the left and right sides shown) are respectively connected to the two component cables 221, which can improve the installation stability of the photovoltaic panel 21, and a load-bearing cable 222 is arranged between the two component cables 221 to support the photovoltaic panel 21, which is beneficial for the multiple cables 22 to cooperate to carry a photovoltaic panel 21 with a larger installation mass and improve the stability of the photovoltaic flexible support 100.

[0062] Among them, the multiple cables 22 can be divided into multiple groups. Each group of cables 22 includes two component cables 221 and a load-bearing cable 222 located between the two component cables 221, and the multiple groups of cables 22 are arranged along the extension direction of the support beam 11 (such as Figure 1 the left and right direction shown), and the multiple photovoltaic panels 21 include multiple groups. The multiple photovoltaic panels 21 in each group of photovoltaic panels 21 are all arranged along the extension direction of the cable 22 (such as Figure 1The photovoltaic assembly 20 is installed on a group of cables 22 in the front and rear directions as shown. The photovoltaic assembly 20 also includes a load-bearing frame 23, which is arranged between the photovoltaic panel 21 and the load-bearing cable 222, and the load-bearing frame 23 can be connected to multiple groups of photovoltaic panels 21, so that the load-bearing cable 222 can support multiple groups of photovoltaic panels 21 through the load-bearing frame 23, and the photovoltaic assembly 20 can be evenly stressed, thereby improving the stability of the support for the photovoltaic assembly 20.

[0063] The insulating member (for example, the column insulator 31) may be provided with a rotatable limit seat 13, and the load-bearing cable 222 may cooperate with the limit seat 13, that is, one end of the column insulator 31 (for example, Figure 3 The lower end shown in FIG. 1 may be connected to the middle beam 112, and the limit seat 13 may be arranged at the other end of the column insulator 31 (as shown in FIG. Figure 3 The load-bearing cable 222 can be connected to the column insulator 31 through the limit seat 13, which can increase the height of the load-bearing cable 222 at the middle beam 112, which is beneficial to improving the supporting effect of the photovoltaic panel 21.

[0064] The limit seat 13 can rotate relative to the column insulator 31, that is, the limit seat 13 can rotate when the load-bearing cable 222 contacts the limit seat 13, which can ensure that the load-bearing cable 222 is in full contact with the limit seat 13, reduce the degree of bending of the load-bearing cable 222 at the middle beam 112, achieve a smooth transition of the load-bearing cable 222 through the middle beam 112, reduce the stress loss of the bending of the load-bearing cable 222, and reduce the probability of surface cuts or fractures of the load-bearing cable 222 due to its excessively high position at the middle beam 112, thereby increasing the service life of the load-bearing cable 222.

[0065] The column insulator 31 may also be provided with a clamp, that is, one end of the column insulator 31 (such as Figure 3 The lower end of the post insulator 31 (as shown in FIG. 1 ) can be connected to the middle beam 112, and the hoop can be arranged at the other end of the post insulator 31 (as shown in FIG. Figure 3 On the end surface of the upper end shown in FIG. 1 , the component rope 221 can be connected to the column insulator 31 through a clamp, which can improve the connection effect between the component rope 221 and the column insulator 31.

[0066] like Figure 3 As shown, in some embodiments, the insulating member (for example, the column insulator 31) is further provided with a fixing seat 14, and the fixing seat 14 can be provided at one end of the column insulating column away from the middle beam 112 (for example, Figure 3 As shown in the upper end, the fixed seat 14 may have an axial hole, and the limiting seat 13 may have a rotating shaft 131, which may be plugged into the axial hole so that the limiting seat 13 can rotate relative to the fixed seat 14; or, the fixed seat 14 may have a rotating shaft 131, and the limiting seat 13 may have an axial hole.

[0067] The limiting seat 13 may have a limiting ring 133, and the limiting ring 133 may be disposed on a surface of the limiting seat 13 close to the load-bearing cable 222 (such as Figure 3 the upper side shown). The load-bearing cable 222 may pass through the limiting ring 133 and be lapped on the limiting seat 13, so as to limit the load-bearing cable 222, prevent the load-bearing cable 222 from detaching from the limiting seat 13, ensure sufficient contact between the load-bearing cable 222 and the limiting seat 13, reduce the stress loss caused by the bending of the load-bearing cable 222, and reduce the probability of surface abrasion or fracture of the load-bearing cable 222 due to its too high position at the middle beam 112.

[0068] As Figure 3 shown, in some embodiments, a surface of the limiting seat 13 close to the load-bearing cable 222 (such as Figure 3 the upper side shown) may be an arc surface 132, and the arc surface 132 may arch towards the direction of the load-bearing cable 222 (such as Figure 3 the direction from bottom to top shown), so as to ensure sufficient contact between the load-bearing cable 222 and the limiting seat 13, reduce the bending degree of a part of the load-bearing cable 222 at the middle beam 112, achieve a smooth transition of the load-bearing cable 222 through the middle beam 112, reduce the stress loss caused by the bending of the load-bearing cable 222, and reduce the probability of surface abrasion or fracture of the load-bearing cable 222 due to its too high position at the middle beam 112, and improve the service life of the load-bearing cable 222.

[0069] As Figure 3 、 Figure 6 and Figure 9 shown, in some embodiments, the photovoltaic flexible support 100 further includes a cable collecting beam 60. The cable collecting beam 60 may be disposed on the photovoltaic module 20. For example, the cable collecting beam 60 may be directly hung on the cable 22 of the photovoltaic module 20, so as to reduce the number of insulating parts and save costs; or, the cable collecting beam 60 may be disposed on the support assembly 10, which is beneficial to the installation of the cable collecting beam 60 and is convenient for operation; the cable collecting beam 60 may be defined with a cable collecting hole 61 to facilitate placing a wire harness (such as a cable) in the cable collecting beam 60, so as to protect the wire harness, improve the service life of the wire harness, and improve the reliability of the photovoltaic flexible support 100.

[0070] As Figure 3 shown, in some embodiments, the photovoltaic flexible support 100 further includes a hanging member 50. The hanging member 50 may be connected to the cable 22, and the hanging member 50 is defined with an installation groove. The cable collecting beam 60 may be installed in the installation groove, so that the cable collecting beam 60 is hung on the cable 22 of the photovoltaic module 20 through the hanging member 50. Since the cable 22 is insulated and connected to the support beam 11, on the basis of realizing the installation of the cable collecting beam 60, the number of insulating parts can be reduced and costs can be saved.

[0071] As Figure 3As shown, in some embodiments, the hanging member 50 may include a hanging body 51 and two hanging rings 52. The two hanging rings 52 may be disposed on opposite sides of the hanging body 51 (such as the front and rear sides as shown in Figure 3 ), and the cable 22 passes through the two hanging rings 52 in sequence, so that the hanging member 50 is connected to the cable 22. A mounting groove is defined in the portion of the hanging body 51 between the two hanging rings 52, which enables the cable collecting beam 60 to be mounted on the hanging body 51, and the cable collecting beam 60 is located between the hanging body 51 and the cable 22, which can limit the cable collecting beam 60 and improve the stability of the installation of the cable collecting beam 60.

[0072] As Figure 1 and Figure 9 shown, in some embodiments, the photovoltaic flexible support 100 further includes a mounting beam 62. One end of the mounting beam 62 (such as the rear end as shown in Figure 1 ) may be connected to the support column 12, and the cable collecting beam 60 may be connected to the other end of the mounting beam 62 (such as the front end as shown in Figure 1 ) through an insulating member (for example, a post insulator 31), which enables the cable collecting beam 60 to be mounted on the support column 12, can improve the supporting effect on the cable collecting beam 60, and at the same time can insulate the cable collecting beam 60 from the support column 12, prevent current from passing through the cable collecting beam 60 and the support column 12, is beneficial to protecting the circuit, and can improve the reliability and safety of the photovoltaic flexible support 100.

[0073] As Figure 8 and Figure 9 shown, according to some embodiments of the present application, the photovoltaic flexible support 100 further includes an insulating support 40. The insulating support 40 may be disposed on the support column 12, and the insulating support 40 may include a fixed support 41 and a mounting support 42. The fixed support 41 may be connected to the support column 12, and the mounting support 42 may be connected to the fixed support 41 through an insulating member (for example, a suspension insulator 30), and the inverter unit 70 may be mounted on the mounting support 42. Thus, on the basis of realizing the installation of the inverter unit 70, the inverter unit 70 can be insulated from the support column 12, prevent current from passing through the inverter unit 70 and the support column 12, can protect the circuit, and can improve the reliability and safety of the photovoltaic flexible support 100.

[0074] As Figure 1 、 Figure 8 and Figure 9 shown, in some embodiments, there are multiple insulating members, that is, the mounting support 42 may be connected to the fixed support 41 through multiple suspension insulators 30, which can improve the supporting effect on the inverter unit 70 on the basis of realizing the insulation between the inverter unit 70 and the support column 12.

[0075] Among them, the length of a part of the suspension insulators 30 among the multiple suspension insulators 30 is greater than the length of another part of the suspension insulators 30 among the multiple suspension insulators 30. The other part of the suspension insulators 30 can extend in the horizontal direction (such as Figure 1 the front-back direction shown), and a part of the suspension insulators 30 can extend in a direction inclined to the horizontal plane. That is, the mounting bracket 42, the multiple suspension insulators 30, and the fixing bracket 41 cooperate to form a triangular structure, which can improve the stability of the connection between the mounting bracket 42 and the fixing bracket 41, and thus can improve the stability of the installation of the inverter unit 70.

[0076] It should be noted that a part of the suspension insulators 30 can be inclined and extended in the direction approaching the other part of the suspension insulators 30 in the direction of the fixing bracket 41 facing the mounting bracket 42 (such as Figure 1 the direction from back to front shown), and a part of the suspension insulators 30 can be inclined and extended in the direction approaching the other part of the suspension insulators 30 in the direction (such as Figure 8 the direction from bottom to top shown); or, a part of the suspension insulators 30 is located below the other part of the suspension insulators 30. That is, a part of the suspension insulators 30 can be inclined and extended in the direction approaching the other part of the suspension insulators 30 in the direction of the fixing bracket 41 facing the mounting bracket 42 (such as Figure 1 the direction from back to front shown) in the direction (such as Figure 9 the direction from top to bottom shown).

[0077] It can be understood that the number of the fixing brackets 41 can be two. The two fixing brackets 41 are arranged at intervals on the support column 12 along the extending direction of the support column 12 (such as Figure 8 the up-down direction shown), so that the above-mentioned part of the suspension insulators 30 is connected to the lower fixing bracket 41, and the above-mentioned other part of the suspension insulators 30 is connected to the upper fixing bracket 41; or, the above-mentioned part of the suspension insulators 30 is connected to the upper fixing bracket 41, and the above-mentioned other part of the suspension insulators 30 is connected to the lower fixing bracket 41. The fixing bracket 41 can be a hoop. On the basis of realizing the normal installation of the fixing bracket 41, the structure of the fixing bracket 41 can be simplified and it is convenient for installation.

[0078] Such as Figure 6 and Figure 7As shown, according to some embodiments of the present application, the inverter unit 70 can be connected to the support beam 11 (e.g., the middle beam 112) through an insulating member (e.g., the post insulator 31). On the basis of realizing the installation of the inverter unit 70, insulation between the inverter unit 70 and the support beam 11 can be achieved, preventing current from passing through the inverter unit 70 and the support beam 11, protecting the circuit, improving the reliability of the flexible photovoltaic support 100, and enhancing the safety of the flexible photovoltaic support 100. And the inverter unit 70 can be located below the support beam 11 (as Figure 7 shown below), on the basis of realizing the insulated connection between the inverter unit 70 and the support beam 11, the space of the flexible photovoltaic support 100 can be fully utilized.

[0079] As Figure 6 , Figure 7 , Figure 8 and Figure 9 shown, according to some embodiments of the present application, the flexible photovoltaic support 100 further includes a grounding member 90. The grounding member 90 can be arranged on the support column 12, and a part of the grounding member 90 can be buried in the ground. The lightning arrester 80 can be arranged on the support beam 11. One end of the lightning arrester 80 can be electrically connected to the inverter unit 70 through a wire, and the other end of the lightning arrester 80 can be electrically connected to the grounding member 90 through a wire.

[0080] Thus, the lightning arrester 80 can conduct the current into the ground when the lightning strikes the inverter unit 70 or the inverter unit 70 leaks electricity, improving the protection effect on the circuit, enhancing the reliability of the flexible photovoltaic support 100, and increasing the safety of the flexible photovoltaic support 100. It can be understood that the grounding member 90 can be a grounding flat iron, which is convenient for processing and helps to reduce costs on the basis of realizing the conduction of current into the ground.

[0081] According to some embodiments of the present application, the lightning arrester 80 can be a zinc oxide lightning arrester 80. The zinc oxide lightning arrester 80 can be composed of multiple varistors, and the varistors can be made of zinc oxide material, doped with a small amount of metal oxide additives, and sintered at high temperature, which can improve the non-linear varistor characteristics of the lightning arrester 80, increase the resistance value of the lightning arrester 80 under the normal working voltage of the inverter unit 70, and reduce the resistance value of the lightning arrester 80 under the action of lightning overvoltage on the inverter unit 70, so that the lightning arrester 80 discharges the lightning current to the ground, improving the protection effect on the circuit.

[0082] As Figure 10 shown, in the present application, the resistance value of the lightning arrester 80 is relatively high under the normal working voltage of the inverter unit 70, but the resistance value of the lightning arrester 80 will decrease under the action of lightning overvoltage on the inverter unit 70, so that the lightning arrester 80 discharges the lightning current to the ground.

[0083] AsFigure 11 and Figure 12 As shown in Figure 12 , the photovoltaic power generation system 1000 according to an embodiment of the present application includes a photovoltaic flexible bracket 100. By adopting the above-mentioned photovoltaic flexible bracket 100, the number of cables used can be reduced, the cost of cable use can be lowered, and lightning protection for the inverter unit 70 can be achieved. The size of the lightning protection grounding loop network can be reduced, and the lightning protection cost can be lowered, thus saving costs.

[0084] As Figure 11 and Figure 12 shown in Figure 12 , multiple photovoltaic flexible brackets 100 can be arranged independently of each other, which can increase the distribution range of the photovoltaic power generation system 1000; or, multiple photovoltaic flexible brackets 100 can be assembled with each other, which is beneficial to the grid connection of photovoltaic power generation; the inverter units 70 on multiple photovoltaic flexible brackets 100 can be cascaded through AC cables and finally output single-phase 35 kV alternating current.

[0085] Among them, the photovoltaic power generation system 1000 can be divided into three paths of inversion and respectively connected to a 35 kV switch cabinet to output 35 kV three-phase alternating current. The three-phase AC N lines are connected to each other, and the neutral point is not grounded; it should be noted that the technical solution of the inverter unit 70 (DC / AC module) is adopted in the present application, and since there is no electrical isolation between the AC and DC sides of the inverter unit 70, the insulation level of the photovoltaic power generation system 1000 (for example, photovoltaic modules 20, support components 10, and inverter units 70, etc.) needs to be considered according to the 35 kV system.

[0086] Other components and operations of the photovoltaic power generation system 1000 according to an embodiment of the present application are known to those of ordinary skill in the art and will not be described in detail here. In the description of the present application, "the first feature" and "the second feature" may include one or more of such features. Among them, the up-down direction, left-right direction, and front-back direction are based on the up-down direction, left-right direction, and front-back direction shown in the figure.

[0087] In the description of the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature.

[0088] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0089] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A photovoltaic flexible support (100), characterized in that, include: A support assembly (10), the support assembly (10) comprising a plurality of support beams (11) and a plurality of support columns (12), the support beams (11) being arranged at the top ends of the support columns (12); A photovoltaic assembly (20), wherein the photovoltaic assembly (20) is insulated and connected to the support beam (11); An inverter unit (70), the inverter unit (70) being arranged on the support assembly (10) and being insulated and connected to the support assembly (10); A lightning arrester (80), the lightning arrester (80) is arranged on the support assembly (10) and is electrically connected to the inverter unit (70), and the lightning arrester (80) is suitable for being connected to the ground.

2. The photovoltaic flexible support (100) according to claim 1, wherein, The photovoltaic assembly (20) comprises a plurality of photovoltaic panels (21) and a plurality of cables (22); the photovoltaic panels (21) are mounted on the cables (22); and the cables (22) are connected to the support beam (11) via an insulating member.

3. The photovoltaic flexible support (100) according to claim 2, wherein, The plurality of cables (22) include a plurality of component cables (221) and a plurality of load-bearing cables (222); each photovoltaic panel (21) is mounted on two of the component cables (221), and one load-bearing cable (222) is arranged between the two component cables (221); a rotatable limit seat (13) is provided on the insulating member, and the load-bearing cable (222) cooperates with the limit seat (13).

4. The photovoltaic flexible bracket (100) according to claim 3, characterized in that, The insulating member is also provided with a fixing seat (14), the limiting seat (13) and the first one of the fixing seats (14) have an axial hole, the limiting seat (13) and the other one of the fixing seats (14) have a rotating shaft (131), the rotating shaft (131) is plug-fitted with the axial hole, the limiting seat (13) has a limiting ring (133), the limiting ring (133) is arranged on a side surface of the limiting seat (13) close to the load-bearing cable (222), and the load-bearing cable (222) is suitable for passing through the limiting ring (133).

5. The photovoltaic flexible support (100) according to claim 4, characterized in that, A surface of the limiting seat (13) on one side close to the load-bearing cable (222) is a curved surface (132) arched toward the load-bearing cable (222).

6. The photovoltaic flexible support (100) according to claim 2, characterized in that, Also includes: A wire collection beam (60) is provided on the photovoltaic assembly (20) or the support assembly (10), and the wire collection beam (60) is defined with a wire collection hole (61) suitable for placing a wire harness, so as to protect the wire harness.

7. The photovoltaic flexible bracket (100) according to claim 6, wherein, Also includes: A hanging member (50) is connected to the cable (22) and defines a mounting groove, and the cable collection beam (60) is mounted in the mounting groove.

8. The photovoltaic flexible support (100) according to claim 7, characterized in that, The hanging component (50) comprises a hanging body (51) and two hanging rings (52), wherein the two hanging rings (52) are arranged on opposite sides of the hanging body (51), and the cables (22) are passed through the two hanging rings (52) in sequence, and the cable collection beam (60) is installed on the hanging body (51) and is located between the hanging body (51) and the cables (22).

9. The photovoltaic flexible bracket (100) according to claim 6, characterized in that, Also includes: A mounting beam (62), one end of which is connected to the support column (12), and the line collection beam (60) is connected to the other end of the mounting beam (62) via the insulating member.

10. The photovoltaic flexible bracket (100) according to claim 1, characterized in that, Also includes: Insulating support (40), the insulating support (40) is provided on the support column (12) and includes a fixed support (41) and a mounting support (42), the fixed support (41) is connected to the support column (12), the mounting support (42) is connected to the fixed support (41) through an insulating member, and the inverter unit (70) is mounted on the mounting support (42).

11. The photovoltaic flexible support (100) according to claim 10, wherein, The insulating members include a plurality of them, a part of the plurality of insulating members extends in the horizontal direction, and another part of the plurality of insulating members extends in a direction inclined to the horizontal plane.

12. The photovoltaic flexible support (100) according to claim 1, wherein The inverter unit (70) is connected to the support beam (11) through an insulating member, and the inverter unit (70) is located below the support beam (11).

13. The flexible photovoltaic support (100) according to claim 2, characterized in that, The plurality of support beams (11) include end beams (111) at both ends and middle beams (112) in the middle. Wherein, the end of the cable (22) is insulated and connected to the end beam (111) through an insulating member, the middle part of the cable (22) is insulated and connected to the middle beam (112) through an insulating member, and the inverter unit (70) is connected to the middle beam (112) and / or the support column (12) supporting the middle beam (112) through an insulating member.

14. The photovoltaic flexible support (100) according to any one of claims 2-13, characterized in that, The insulating member is a suspension insulator (30) and / or a post insulator (31).

15. The photovoltaic flexible bracket (100) according to claim 1, characterized in that, It further includes: A grounding member (90), the grounding member (90) is provided on the support column (12), the lightning arrester (80) is provided on the support beam (11), one end of the lightning arrester (80) is connected to the inverter unit (70) through a wire, the other end of the lightning arrester (80) is connected to the grounding member (90) through the wire, and a part of the grounding member (90) is buried in the ground.

16. The photovoltaic flexible bracket (100) according to claim 1, characterized in that, The lightning arrester (80) is a zinc oxide lightning arrester (80).

17. A photovoltaic power generation system (1000), characterized in that, It includes the photovoltaic flexible support (100) according to any one of claims 1-16.

Images