Integrated photovoltaic box transformer integrated structure

Abstract

This application belongs to the field of photovoltaic transformer substation technology, and proposes an integrated photovoltaic transformer substation structure, including a platform connected to the ground via several cast-in-place piles; a transformer substation is installed on the upper surface of the platform; several telescopic structures are installed on the upper surface of the platform, located on the outside of the transformer substation; a photovoltaic support system is installed on top of the telescopic structures, located above the transformer substation; the photovoltaic support system includes inclined beams installed between adjacent telescopic structures, and photovoltaic modules are installed above the inclined beams; the photovoltaic modules are connected to the inclined beams via purlins; the integrated photovoltaic transformer substation structure also includes a fiberglass oil tank, which is connected to the transformer substation. This invention, by covering the transformer substation with the photovoltaic support system, achieves the function of protecting the transformer substation from direct sunlight and hail; simultaneously, it generates electricity through the photovoltaic support system, thereby achieving power supply and saving space utilization.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic transformer substation technology, and specifically relates to an integrated photovoltaic transformer substation structure. Background Technology

[0002] In new energy projects, prefabricated substations are key nodes for on-site voltage boosting and protection. They are devices that step up the voltage of photovoltaic or wind power to 35kV, collect power from photovoltaic strings or individual wind turbines, integrate multiple protections to ensure grid connection safety, and solve the problems of transmission losses and grid access for distributed power sources. Traditional prefabricated substations have concrete foundations with an emergency oil tank at the bottom and no roof shielding, leaving them exposed to sun and rain for extended periods, which reduces their lifespan.

[0003] A patent with publication number CN106357127A discloses a box-type photovoltaic inverter, including a cooling fan, a surge arrester, a temperature sensor, a temperature controller, a remote alarm, and heat dissipation pipes. The front door has a handle, and the bottom of the enclosure has heat dissipation louvers. The surge arrester is located inside the enclosure and is connected to an overvoltage protector. A three-phase IGBT bridge is fixedly installed at the top of the enclosure's inner cavity. The controller is fixedly installed on the inner wall of the front door. A rear door is located at the back of the enclosure. A circulation pump is fixedly installed at the bottom of the enclosure's inner cavity and is connected to the heat dissipation pipes. The temperature sensor is electrically connected to the temperature controller. This box-type photovoltaic inverter utilizes coolant to enhance heat transfer, resulting in better heat dissipation than traditional equipment. It also allows for real-time monitoring of the inverter's operating status, improving system safety.

[0004] However, the existing box-type photovoltaic inverters in the above-mentioned technologies have no obstructions above them, which reduces their service life. At the same time, the box-type inverters occupy a large area, and other devices cannot be installed in the place where the box-type inverters are installed, which leads to a waste of space.

[0005] Therefore, there is a need for an integrated photovoltaic box that can improve service life and save space. Summary of the Invention

[0006] To address the aforementioned issues, this application proposes an integrated photovoltaic transformer substation structure, comprising a platform connected to the ground via several cast-in-place piles; a transformer substation mounted on the upper surface of the platform; several telescopic structures mounted on the upper surface of the platform, located on the outside of the transformer substation; and a photovoltaic support system mounted on top of the telescopic structures, located above the transformer substation.

[0007] Furthermore, the photovoltaic support system includes inclined beams installed between adjacent telescopic structures, with photovoltaic modules mounted above the inclined beams.

[0008] Furthermore, the photovoltaic modules are connected to the inclined beams via purlins.

[0009] Furthermore, the integrated photovoltaic transformer substation structure also includes a fiberglass oil tank, which is connected to the transformer substation.

[0010] Furthermore, the telescopic structure includes a telescopic sleeve and a telescopic rod that are slidably connected. The end of the telescopic sleeve away from the telescopic rod is fixedly connected to the upper surface of the platform, and the end of the telescopic rod away from the telescopic sleeve is fixedly connected to the photovoltaic support system.

[0011] Furthermore, a fence is installed on the outside of the platform, located outside the telescopic structure.

[0012] Furthermore, a ladder is installed on the outside of the platform, with one end connected to the platform and the other end connected to the ground. The ladder is located outside the fence.

[0013] Furthermore, the platform is fixedly connected to the transformer substation via pre-embedded parts.

[0014] Furthermore, the embedded parts include embedded bolts, which pass through the platform and are fixedly connected to the transformer substation.

[0015] Furthermore, the platform includes a steel platform or a concrete platform.

[0016] Beneficial effects: 1. The integrated photovoltaic transformer substation structure of the present invention includes a platform, which is connected to the ground through several cast-in-place piles; a transformer substation is installed on the upper surface of the platform; several telescopic structures are installed on the upper surface of the platform, and the telescopic structures are located on the outside of the transformer substation; a photovoltaic support system is set on the top of the telescopic structures, and the photovoltaic support system is located above the transformer substation; the present invention achieves the function of protecting the transformer substation from direct sunlight and hail by covering it with the photovoltaic support system; at the same time, it generates electricity through the photovoltaic support system, thereby achieving power supply and saving space utilization.

[0017] 2. The integrated photovoltaic transformer substation structure of the present invention includes inclined beams installed between adjacent telescopic structures, and photovoltaic modules installed above the inclined beams; photovoltaic modules generate electricity through solar energy, and the angle of the photovoltaic modules is adjusted by purlins to adapt to different seasons of sunlight, thereby improving power generation efficiency.

[0018] 3. The integrated photovoltaic transformer substation structure of the present invention includes a railing installed on the outside of the inclined beam platform, the railing being located outside the telescopic structure; the railing is used for protection, thereby preventing maintenance personnel from falling; a ladder is installed on the outside of the platform, one end of the ladder is connected to the platform and the other end is connected to the ground, the ladder being located outside the railing; the installation of the ladder facilitates maintenance personnel to maintain the transformer substation or photovoltaic support system.

[0019] 4. The platform of the integrated photovoltaic transformer substation structure of the present invention is fixedly connected to the transformer substation via embedded parts; by setting embedded parts, the fixed connection between the transformer substation and the platform is achieved, thereby improving the connection strength. Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 The first angle schematic diagram of the integrated photovoltaic transformer substation structure in the embodiment of this application is shown.

[0022] Figure 2 A second-angle schematic diagram of the integrated photovoltaic transformer substation structure in an embodiment of this application is shown.

[0023] Explanation of reference numerals in the attached drawings: 1. Photovoltaic module; 2. Purlin; 3. Inclined beam; 4. Expansion joint; 5. Transformer box; 6. Embedded part; 7. Platform; 8. Ground; 9. Cast-in-place pile; 10. Ladder; 11. Fence; 12. Fiberglass oil tank. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Example 1 refer to Figure 1An integrated photovoltaic transformer substation structure comprises a three-tiered integrated system: a bottom layer, a middle layer, and a top layer. The bottom layer includes a pre-embedded fiberglass oil tank 12, made of corrosion-resistant material, thus requiring no maintenance. The middle layer includes cast-in-place piles 9, each containing a steel frame and a grid maintenance plate. The steel frame connects adjacent piles 9, and the grid maintenance plate is located below the transformer substation 5, allowing for maintenance. The top layer includes a cantilevered photovoltaic support system, which covers and extends above the transformer substation 5, providing both power generation and rain protection.

[0026] Furthermore, the pile foundation system consists of multiple cast-in-place piles 9 vertically distributed around the transformer substation 5; the cast-in-place piles 9 include concrete cast-in-place piles or steel pipe piles; the end of the cast-in-place pile 9 away from the platform 7 is fixedly connected to the ground 8; a fiberglass oil tank 12 is installed in the ground 8, and the fiberglass oil tank 12 is located below the transformer substation 5; the fiberglass oil tank 12 serves as an insulating oil storage container for the transformer substation 5; the platform 7 is connected to the transformer substation 5 through embedded parts 6, the embedded parts 6 include embedded bolts, the embedded bolts pass through the platform 7 and are fixedly connected to the transformer substation 5; the photovoltaic support system consists of a crossbeam extending from the top of the telescopic structure 4, purlins 2, inclined beams 3 and photovoltaic modules 1, the two purlins 2 forming an umbrella shape; the four corners of the platform 7 are provided with detachable telescopic structures 4, the upper end of the telescopic structure 4 is fixedly connected to the inclined beams 3 through the extended crossbeams.

[0027] Furthermore, an array of photovoltaic modules 1 are installed at an angle on purlins 2 to form a photovoltaic support system, which covers the transformer substation 5. This invention integrates four functional modules: transformer substation 5, insulating oil storage, photovoltaic power generation, and equipment protection, reducing the floor space by more than 40%. The photovoltaic support system provides both protection against direct sunlight and hail, thus enhancing protection. Simultaneously, the photovoltaic support system generates electricity, saving space. The tilt angle of the photovoltaic modules 1 is adjustable to adapt to seasonal changes in sunlight, improving power generation efficiency.

[0028] Furthermore, the fiberglass oil tank 12 is pre-buried underground; six Φ300~400mm cast-in-place piles 9 are installed in the planned area of ​​the transformer substation 5, with the top of the piles 9 1.5m above the ground; a grid-type maintenance port is set at the platform opening of the platform 7, and a 15cm high water-retaining edge is welded around the perimeter of the platform 7; four expansion joints 4 with a diameter of 100~200mm are installed through flange connection, the expansion joints 4 include square or round tube columns, and the verticality error is ≤2‰; the present invention adopts a technical pre-assembled truss structure, and the components are connected on site with high-strength bolts; multiple photovoltaic modules 1 are laid, and the lowest point of the photovoltaic module 1 is ≥80cm from the top of the transformer substation 5.

[0029] Furthermore, an integrated photovoltaic transformer substation structure includes, from bottom to top, cast-in-place piles 9, a platform 7, a telescopic structure 4, and a photovoltaic support system; the four corners of the platform 7 are equipped with bases for the telescopic structures 4 with height adjustment. The photovoltaic support system is connected to the platform 7 via the telescopic structures 4, and the platform 7 includes a steel platform or a concrete platform for the transformer substation. This invention, through the integrated design of pile foundation (cast-in-place piles 9), steel platform (platform 7), and support system (telescopic structure 4, inclined beam 3, purlin 2, and photovoltaic module 1), achieves the dual functions of shielding the transformer substation 5 and generating electricity for the photovoltaic module 1, overcoming the limitation of idle land around the transformer substation 5.

[0030] Example 2 refer to Figure 1 An integrated photovoltaic (PV) transformer substation structure includes a platform 7 connected to the ground 8 via several cast-in-place piles 9. A transformer substation 5 is mounted on the upper surface of the platform 7. Several telescopic structures 4 are mounted on the upper surface of the platform 7, located outside the transformer substation 5. A PV support system is installed on top of the telescopic structures 4, positioned above the transformer substation 5. This invention achieves the protection of the transformer substation 5 from direct sunlight and hail by covering it with the PV support system; simultaneously, it generates electricity through the PV support system, thus saving space.

[0031] Furthermore, the photovoltaic support system includes inclined beams 3, which are installed between adjacent telescopic structures 4, with photovoltaic modules 1 mounted above the inclined beams 3. Photovoltaic modules 1 generate electricity through sunlight. The angle of the photovoltaic modules 1 is adjusted by purlins 2 to adapt to different seasonal sunlight conditions, thereby improving power generation efficiency. The photovoltaic modules 1 are connected to the inclined beams 3 via purlins 2. Connecting the photovoltaic modules 1 and the inclined beams 3 with multiple purlins 2 enhances the connection strength.

[0032] refer to Figure 1 The integrated photovoltaic transformer substation structure also includes a fiberglass oil tank 12, which is connected to the transformer substation 5. Specifically, insulating oil is supplied to the fiberglass oil tank 12 through the transformer substation 5.

[0033] Furthermore, the telescopic structure 4 includes a telescopic sleeve and a telescopic rod that are slidably connected. The end of the telescopic sleeve away from the telescopic rod is fixedly connected to the upper surface of the platform 7, and the end of the telescopic rod away from the telescopic sleeve is fixedly connected to the photovoltaic support system. The height of the photovoltaic support system can be adjusted by extending and retracting the telescopic structure 4, thereby adapting to different locations and seasons.

[0034] refer to Figure 1 A fence 11 is installed on the outside of the platform 7, located outside the telescopic structure 4. The fence 11 is installed to prevent maintenance personnel from falling.

[0035] refer to Figure 2A ladder 10 is installed on the outside of platform 7. One end of ladder 10 is connected to platform 7, and the other end is connected to the ground 8. Ladder 10 is located outside of fence 11. Installing ladder 10 facilitates maintenance personnel to maintain transformer 5 or photovoltaic support system.

[0036] Furthermore, platform 7 is fixedly connected to transformer substation 5 via embedded part 6. By setting embedded part 6, a fixed connection between transformer substation 5 and platform 7 is achieved, improving the connection strength. Embedded part 6 includes embedded bolts, which pass through platform 7 and are fixedly connected to transformer substation 5.

[0037] Furthermore, platform 7 includes either a steel platform or a concrete platform for the transformer substation. The choice between a steel platform and a concrete platform depends on the specific circumstances.

[0038] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An integrated photovoltaic transformer substation structure, characterized in that, The platform (7) is connected to the ground (8) by a number of grouting piles (9); a transformer substation (5) and a number of telescopic structures (4) are installed on the upper surface of the platform (7), and the number of telescopic structures (4) are located outside the transformer substation (5); a photovoltaic support system is provided on the top of the telescopic structure (4), and the photovoltaic support system is located above the transformer substation (5).

2. The integrated photovoltaic transformer substation structure according to claim 1, characterized in that, The photovoltaic support system includes a sloping beam (3) installed between adjacent telescopic structures (4), and a photovoltaic module (1) is installed above the sloping beam (3).

3. The integrated photovoltaic transformer substation structure according to claim 2, characterized in that, The photovoltaic module (1) is connected to the inclined beam (3) via purlins (2).

4. An integrated photovoltaic transformer substation structure according to any one of claims 1-3, characterized in that, The integrated photovoltaic transformer substation structure also includes a fiberglass oil tank (12), which is connected to the transformer substation (5).

5. An integrated photovoltaic transformer substation structure according to any one of claims 1-3, characterized in that, The telescopic structure (4) includes a telescopic sleeve and a telescopic rod that are slidably connected. The end of the telescopic sleeve away from the telescopic rod is fixedly connected to the upper surface of the platform (7), and the end of the telescopic rod away from the telescopic sleeve is fixedly connected to the photovoltaic support system.

6. The integrated photovoltaic transformer substation structure according to claim 5, characterized in that, A fence (11) is installed on the outside of the platform (7), and the fence (11) is located on the outside of the telescopic structure (4).

7. The integrated photovoltaic transformer substation structure according to claim 6, characterized in that, A ladder (10) is installed on the outside of the platform (7). One end of the ladder (10) is connected to the platform (7) and the other end is connected to the ground (8). The ladder (10) is located on the outside of the fence (11).

8. The integrated photovoltaic transformer substation structure according to claim 1, characterized in that, The platform (7) is fixedly connected to the transformer substation (5) through the embedded part (6).

9. The integrated photovoltaic transformer substation structure according to claim 8, characterized in that, The embedded part (6) includes an embedded bolt, which passes through the platform (7) and is fixedly connected to the transformer (5).

10. An integrated photovoltaic transformer substation structure according to claim 8 or 9, characterized in that, The platform (7) includes a prefabricated steel platform or a concrete platform.

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