Rapid dual-power-supply modularized overhead centralized heat dissipation compact prefabricated cabin type transformer substation

Abstract

The invention discloses a rapid dual-power-supply modular overhead centralized heat dissipation compact prefabricated cabin type substation. The substation comprises a transformer space provided with a transformer; the transformer space is a prefabricated cabin which is rectangular in the overlook direction, a prefabricated foundation is arranged below the transformer space, and two large-area side faces are connected with the low-voltage cabinet unit and the high-voltage cabinet unit respectively and form a skid-mounted modular unit with the low-voltage cabinet unit and the high-voltage cabinet unit. The low-voltage cabinet unit and the high-voltage cabinet unit are rectangular prefabricated cabins in the overlook direction, and prefabricated flat plates are arranged below the low-voltage cabinet unit and the high-voltage cabinet unit to serve as foundations. The transformer is a double-loop transformer with an overhead radiator, adopts a split type symmetrical arrangement and frame type concentrated shutter heat dissipation structure, and is provided with a vacuum butterfly valve to realize field disassembly and assembly. The prefabricated substation is compact, modularized and miniaturized, the on-site shell can be assembled according to the environment, the foundation on-site construction of the prefabricated substation is reduced, and the problems of poor heat dissipation of the transformer and the like are solved.

Description

Technical Field

[0001] The invention relates to the technical field of transformer substation construction, and in particular to a quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin-type transformer substation. Background Art

[0002] Standard distribution room construction is currently widely used in power grids to meet the power supply needs of urban communities, industrial parks, etc. High and low voltage switchgear and transformers are all in one space, including AC screens, automation screens, and communication screens. From the layout point of view, the low voltage switchgear is arranged side by side with the transformer, and the high voltage switchgear is arranged opposite, with maintenance and operation corridors inside.

[0003] In the prior art, substation buildings use traditional cement and steel structure. This type of substation has the advantages of large space and high reliability, but its disadvantages are large floor space, poor economy and long construction period.

[0004] In the prior art, if a prefabricated substation is used to replace a substation, the outer shell of the prefabricated substation is generally made of metal or non-metal, and the high-voltage switch, transformer, and low-voltage switch placed inside the shell are large in size, and the heat dissipation efficiency of the transformer room is low. At the same time, large vehicles are generally used for the transportation of prefabricated substation products; the foundation of the prefabricated substation is also relatively large corresponding to the size of the prefabricated substation, and on-site construction is carried out, and large lifting equipment is used to put the prefabricated substation on the foundation of the prefabricated substation.

[0005] Therefore, how to replace the more standard design of urban power distribution rooms, personalized equipment design, modular technology, and factory-based applications so that the project can be standardized and quickly constructed; at the same time, it can meet the personalized needs of different urban fields and occasions, so that if a failure occurs during product operation, power supply can be quickly restored has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] In view of the above-mentioned defects of the prior art, the present invention provides a quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin substation, the purpose of which is to make the prefabricated substation compact, modular and miniaturized. The on-site shell can be assembled according to the environment, reducing the on-site construction of the prefabricated substation foundation and solving the problems of poor heat dissipation of the transformer.

[0007] To achieve the above-mentioned purpose, the present invention discloses a quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin-type substation, including a transformer space provided with a transformer;

[0008] The transformer space is a prefabricated cabin that is rectangular in a top view direction, with a prefabricated foundation at the bottom, and two sides with larger areas are respectively connected to the low-voltage cabinet unit and the high-voltage cabinet unit, forming a skid-mounted modular unit with the low-voltage cabinet unit and the high-voltage cabinet unit;

[0009] The low-voltage cabinet unit and the high-voltage cabinet unit are both prefabricated cabins that are rectangular in a top view, and are provided with prefabricated flat plates as foundations at the bottom;

[0010] The transformer is a double-circuit transformer with a top-mounted radiator, adopts a split-type symmetrical arrangement and a rack-type centralized louver heat dissipation structure, and is provided with a vacuum butterfly valve to achieve on-site disassembly and assembly, comprising a double-circuit transformer body and a top-mounted radiator arranged above the double-circuit transformer body and connected through a transformer heat dissipation coupling pipe;

[0011] On the partition wall between the transformer space and the low-voltage cabinet unit, a low-voltage side centralized heat dissipation channel is provided at a position above the top-mounted radiator, and on the partition wall between the transformer space and the high-voltage cabinet unit, a high-voltage side centralized heat dissipation channel is provided at a position above the top-mounted radiator;

[0012] The low-voltage cabinet unit includes two circuit low-voltage cabinets corresponding to the double-circuit transformer body;

[0013] The transformer space and the bottom frame of the low-voltage cabinet unit are provided with low-voltage cable outlet holes, and the cables connecting the double-circuit transformer body to the low-voltage cabinet are arranged through the low-voltage cable outlet holes;

[0014] The high-voltage cabinet unit includes two circuit high-voltage cabinets corresponding to the double-circuit transformer body;

[0015] The transformer space and the bottom frame of the high-voltage cabinet unit are provided with high-voltage cable outlet holes, and the cables connecting the double-circuit transformer body to the high-voltage cabinet are arranged through the high-voltage cable outlet holes.

[0016] Preferably, the transformer, each of the low-voltage cabinets, each of the high-voltage cabinets and the corresponding transformer space, the corresponding low-voltage cabinet unit, or the bottom frame of the corresponding high-voltage cabinet unit are fixed by bolts.

[0017] Preferably, the two low-voltage cabinets in the low-voltage cabinet unit are both in an out-of-cabinet operation mode, and are arranged in two rows in the horizontal direction along two sides with larger areas of the transformer space;

[0018] There is a maintenance passage between the two rows of low-voltage cabinets;

[0019] In each of the low-voltage cabinets, the low-voltage incoming line is closest to the transformer space;

[0020] A plurality of low-voltage outgoing lines are sequentially arranged on a side of each low-voltage incoming line facing away from the transformer space;

[0021] A capacitor is provided on the side of the low-voltage outlet of each low-voltage cabinet facing away from the transformer space;

[0022] Among the capacitors of the two low-voltage cabinets, at least one of the capacitors is provided with a segment on a side facing away from the transformer space.

[0023] More preferably, the transformer space is provided with a manhole capable of entering the cable well; the low-voltage outgoing line is connected to the double outgoing line of the transformer by a busbar; the low-voltage incoming line is connected in the factory and connected to the transformer by a low-voltage quick connector.

[0024] Preferably, the two high-voltage cabinets in the high-voltage cabinet unit are both in the in-cabinet operation mode, and are arranged in two rows in the horizontal direction along the two sides with larger areas of the transformer space;

[0025] An operating passage is provided between the two rows of high-voltage cabinets;

[0026] In each of the high-voltage cabinets, the high-voltage contact cabinet is closest to the transformer space;

[0027] The high-voltage connection cabinet, the outgoing line cabinet, the transformer outgoing line cabinet and the high-voltage incoming line cabinet are arranged in sequence on the side of each feeder cabinet facing away from the transformer space.

[0028] Preferably, the high-voltage incoming lines of each of the high-voltage cabinets are connected using high-voltage cable incoming and outgoing lines, and the connection is completed in the factory.

[0029] Preferably, the outer shells of the transformer space, the low-voltage cabinet unit and the high-voltage cabinet unit are all thin LGS assembled cold-bent thin-wall light steel boxes.

[0030] Preferably, the transformer space, the top of the low-voltage cabinet unit and the high-voltage cabinet unit are all provided with a new energy photovoltaic panel structure.

[0031] Preferably, the prefabricated foundation is a small-scale factory-made prefabricated foundation, and an assembled factory-made cable channel is arranged on the side;

[0032] The prefabricated flat panel is a factory prefabricated flat panel.

[0033] Preferably, a low-voltage bushing is provided on the upper part of the double-circuit transformer body, and a high-voltage pipe is provided on the side;

[0034] The low voltage cabinet unit also includes an industrial air conditioner and a fusion terminal;

[0035] The high-voltage cabinet unit also includes a communication screen, an automation cabinet and an AC screen.

[0036] Beneficial effects of the present invention:

[0037] The present invention is highly integrated, compact, fully functional, economical and has a closed cable entry and exit structure, and is suitable for harsh operating environments.

[0038] The split modular box-type transformer structure of the present invention has small size and light weight, and is convenient for transportation, assembly, construction and assembly by using modularization.

[0039] The top-mounted radiator double-circuit transformer radiator of the present invention has a top-mounted, horizontal parallel structure design, the transformer occupies a small area, and the installation method is flexible. At the same time, an independent heat dissipation channel is formed with the top of the high and low voltage units, so that the heat dissipation efficiency is the highest.

[0040] The product of the present invention occupies a small area, and the small factory prefabricated foundation minimizes the excavation area of ​​the box-type transformer product foundation, and can realize the optimal foundation construction application. The area occupied by the high and low voltage cables of the box-type transformer is minimized.

[0041] The station transformer of the present invention adopts a photovoltaic roof and is fixed with a special structure, which can effectively utilize new energy and ensure product safety in harsh environments.

[0042] The present invention adopts LGS assembled cold-bent thin-wall light steel to form the box-type transformer wall, which has strong plasticity, high strength, and light weight, and can be highly integrated with the urban environment.

[0043] The present invention adopts a dual-circuit high-voltage power supply. When the output is abnormal, the conventional power supply can be cut off to realize the emergency access of the low-voltage emergency power supply.

[0044] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the planar structure of an embodiment of the present invention is shown.

[0046] Figure 2 A schematic diagram of the structure of a transformer in a transformer space in one embodiment of the present invention is shown.

[0047] Figure 3 A schematic structural diagram of a transformer space and a low-voltage cabinet unit in one embodiment of the present invention is shown.

[0048] Figure 4 A schematic structural diagram of a high voltage cabinet unit in an embodiment of the present invention is shown.

[0049] Figure 5 A schematic structural diagram of one side of a prefabricated foundation in one embodiment of the present invention is shown.

[0050] Figure 6 A schematic structural diagram of the other side of the prefabricated foundation in one embodiment of the present invention is shown.

[0051] Figure 7 A schematic diagram of the structure of a prefabricated foundation in a top view in one embodiment of the present invention is shown.

[0052] Figure 8 A schematic diagram of the structure of a prefabricated foundation with a cable well in a top view in one embodiment of the present invention is shown.

[0053] Fig. 9 A schematic diagram of the connection node structure between the wall and the foundation in a thin LGS assembled cold-bent thin-walled light steel box in one embodiment of the present invention is shown.

[0054] Fig.10 A schematic diagram of the L-shaped wall assembly node structure in a thin LGS assembled cold-bent thin-walled light steel box in one embodiment of the present invention is shown.

[0055] Fig.11 A schematic diagram of the wall connection node structure in a thin LGS assembled cold-bent thin-walled light steel box in one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0056] Example

[0057] like Figures 1 to 4 As shown, a quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin-type substation includes a transformer space 1 provided with a transformer 11;

[0058] The transformer space 1 is a prefabricated cabin that is rectangular in a top view, with a prefabricated foundation 4 at the bottom, and two sides with larger areas are respectively connected to the low-voltage cabinet unit 3 and the high-voltage cabinet unit 2, forming a skid-mounted modular unit with the low-voltage cabinet unit 3 and the high-voltage cabinet unit 2;

[0059] The low voltage cabinet unit 3 and the high voltage cabinet unit 2 are both rectangular prefabricated cabins in the top view direction, and both are provided with a prefabricated flat plate 7 as a foundation at the bottom;

[0060] The transformer 11 is a double-circuit transformer with a top-mounted radiator, which adopts a split-type symmetrical arrangement and a rack-type centralized louver heat dissipation structure, and is provided with a vacuum butterfly valve to achieve on-site disassembly and assembly, and includes a double-circuit transformer body 111 and a top-mounted radiator 115 arranged above the double-circuit transformer body 111 and connected through a transformer heat dissipation coupling pipe 112;

[0061] On the partition wall between the transformer space 1 and the low-voltage cabinet unit 3, a low-voltage side centralized heat dissipation channel 12 is provided above the top-mounted radiator 115, and on the partition wall between the transformer space 1 and the high-voltage cabinet unit 2, a high-voltage side centralized heat dissipation channel 13 is provided above the top-mounted radiator 115;

[0062] The low-voltage cabinet unit 3 includes two circuit low-voltage cabinets 31 corresponding to the double-circuit transformer body 111;

[0063] The transformer space 1 and the bottom frame of the low-voltage cabinet unit 3 are provided with a low-voltage cable outlet hole 5, through which the cables of the double-circuit transformer body 111 connected to the low-voltage cabinet 31 are arranged;

[0064] The high-voltage cabinet unit 2 includes two circuit high-voltage cabinets 21 corresponding to the double-circuit transformer body 111;

[0065] The transformer space 1 and the bottom frame of the high-voltage cabinet unit 2 are provided with a high-voltage cable outlet hole 6, through which the cables of the double-circuit transformer body 111 connected to the high-voltage cabinet 21 are arranged;

[0066] The transformer space 1 of the present invention forms a skid-mounted modular unit with the low-voltage cabinet unit 3 and the high-voltage cabinet unit 2, which not only replaces the traditional substation with cement buildings, but also has a more compact structure and high reliability. In addition, the foundation of the box-type transformer is simplified and quick installation is achieved. When special requirements are met, special structural types can be assembled on site.

[0067] The foundations of the low voltage cabinet unit 3 and the high voltage cabinet unit 2 are both prefabricated flat plates 7. The transformer space 1 uses a prefabricated foundation 4, which can be quickly installed and powered on site, greatly reducing the foundation by more than 70% compared with traditional box transformers.

[0068] The power supply system is a double-circuit transformer with a top-mounted radiator. It adopts the conventional horizontal centralized operation mode of two transformer bodies. The radiator is centralized on the top to make full use of the space and a transformer-specific heat dissipation channel is set on the top of the high and low voltage room unit, which has higher heat dissipation efficiency.

[0069] The low voltage cabinet unit 3 and the high voltage cabinet unit 2 can be assembled in the factory on the corresponding foundation. The high and low voltage cables in the bottom frame of the box-type transformer can be centrally connected to the prefabricated foundation of the small chemical factory.

[0070] In some embodiments, the transformer 11, each low-voltage cabinet 31, each high-voltage cabinet 21 and the corresponding transformer space 1, the corresponding low-voltage cabinet unit 3, or the bottom frame of the corresponding high-voltage cabinet unit 2 are fixed by bolts.

[0071] In some embodiments, the two low-voltage cabinets 31 in the low-voltage cabinet unit 3 are both in the out-of-cabinet operation mode, and are arranged in two rows in the horizontal direction along the two larger side surfaces of the transformer space 1;

[0072] Between the two rows of low-voltage cabinets 31 is a maintenance passage 32;

[0073] In each low-voltage cabinet 31, the closest to the transformer space 1 is the low-voltage incoming line 311;

[0074] Each low-voltage incoming line 311 is provided with a plurality of low-voltage outgoing lines 312 in sequence on the side facing away from the transformer space 1;

[0075] A capacitor 313 is provided on the side of the low voltage outgoing line 312 of each low voltage cabinet 31 facing away from the transformer space 1;

[0076] Among the capacitors 313 of the two low-voltage cabinets 31 , at least one capacitor 313 is provided with a segment 314 on a side facing away from the transformer space 1 .

[0077] In some embodiments, the transformer space 1 is provided with a manhole 14 capable of entering the cable well 9; the low-voltage outgoing line 312 is connected to the transformer double outgoing line using a busbar; the low-voltage incoming line 311 is connected in the factory and connected to the transformer 11 through a low-voltage quick connector.

[0078] A manhole 14 is provided in the transformer space 1 to allow access to the cable well. The manhole 14 can be used to enter the cable well for cable entry and exit construction. Compared with the traditional foundation construction of conventional prefabricated cabin-type box-type transformers, the time and construction cost are greatly reduced, so that the entire large box-type transformer can form a fast installation power supply mode. The reasons are:

[0079] Since the parts of the high and low cabinets connected to the outside or the transformer have been prefabricated in the bottom frame of the prefabricated cabin-type box-type transformer, not only does it not need to dig the foundation at the bottom of the prefabricated cabin-type box-type transformer high and low cabinets, but it is also not necessary to lay the corresponding cables.

[0080] In some embodiments, the two high-voltage cabinets 21 in the high-voltage cabinet unit 2 are both in the in-cabinet operation mode, and are arranged in two rows in the horizontal direction along the two larger side surfaces of the transformer space 1;

[0081] Between the two rows of high-voltage cabinets 21 is an operation channel 22;

[0082] In each high-voltage cabinet 21, the high-voltage contact cabinet 211 is closest to the transformer space 1;

[0083] A high-voltage contact cabinet 211 , an outgoing line cabinet 212 , a transformer outgoing line cabinet 213 , and a high-voltage incoming line cabinet 214 are sequentially arranged on a side of each feeder cabinet 211 facing away from the transformer space 1 .

[0084] In some embodiments, the high-voltage incoming lines of each high-voltage cabinet 21 are connected by high-voltage cable incoming and outgoing lines, and the connection is completed in the factory.

[0085] like Figures 9 to 11 In some embodiments, the outer shells of the transformer space 1, the low-voltage cabinet unit 3 and the high-voltage cabinet unit 2 are all thin LGS assembled cold-bent thin-walled light steel boxes.

[0086] In some embodiments, new energy photovoltaic panel structures are provided on the tops of the transformer space 1 , the low-voltage cabinet unit 3 , and the high-voltage cabinet unit 2 .

[0087] In practical applications, the thin LGS assembled cold-bent thin-walled light steel box 3 structure has light weight and high strength, and can be assembled as a whole on site according to the scene. The box is lightweight, making the product more in line with urban environment and low-carbon environmental protection requirements.

[0088] like Figures 5 to 8 As shown, in some embodiments, the prefabricated foundation 4 is a small-scale factory-made prefabricated foundation, and an assembled factory-made cable channel 41 is arranged on the side;

[0089] The prefabricated slab 7 is a factory prefabricated slab.

[0090] The provision of the assembled factory-made cable channel 41 enables the prefabricated foundation 4 to quickly enter and exit the line in the horizontal direction to complete the construction and installation.

[0091] Factory-made prefabricated flat panels can realize the rapid installation of the entire product on site. They are much smaller than conventional box-type transformer foundations, and can realize the rapid installation of box-type transformer and foundation integration. Cable entry and exit wells can be set on both sides to realize the parallel installation of incoming and outgoing cables and products.

[0092] In some embodiments, a low-voltage bushing 113 is provided on the upper portion of the double-circuit transformer body 111, and a high-voltage pipe 114 is provided on the side thereof;

[0093] The low voltage cabinet unit 3 also includes an industrial air conditioner 34 and a fusion terminal 35;

[0094] The high-voltage cabinet unit 2 further includes a communication screen 23 , an automation cabinet 24 and an AC screen 25 .

[0095] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. Quick dual power supply modular top-mounted centralized cooling compact prefabricated cabin substation; characterized by: It comprises a transformer space (1) in which a transformer (11) is arranged; The transformer space (1) is a prefabricated cabin that is rectangular in a top view direction, with a prefabricated foundation (4) provided below, and two sides with larger areas are respectively connected to the low-voltage cabinet unit (3) and the high-voltage cabinet unit (2), forming a skid-mounted modular unit with the low-voltage cabinet unit (3) and the high-voltage cabinet unit (2); The low-voltage cabinet unit (3) and the high-voltage cabinet unit (2) are both prefabricated cabins that are rectangular in a top view, and are both provided with a prefabricated flat plate (7) as a foundation at the bottom; The transformer (11) is a double-circuit transformer with a top-mounted radiator, adopts a split-type symmetrical arrangement and a rack-type centralized louver heat dissipation structure, and is provided with a vacuum butterfly valve to achieve on-site disassembly and assembly, comprising a double-circuit transformer body (111) and a top-mounted radiator (115) arranged above the double-circuit transformer body (111) and connected via a transformer heat dissipation connecting pipe (112); A low-voltage side centralized heat dissipation channel (12) is provided on the partition wall between the transformer space (1) and the low-voltage cabinet unit (3) at a position above the top-mounted radiator (115), and a high-voltage side centralized heat dissipation channel (13) is provided on the partition wall between the transformer space (1) and the high-voltage cabinet unit (2) at a position above the top-mounted radiator (115); The low-voltage cabinet unit (3) includes two circuit low-voltage cabinets (31) corresponding to the double-circuit transformer body (111); The transformer space (1) and the bottom frame of the low-voltage cabinet unit (3) are provided with a low-voltage cable outlet hole (5), and the cables connecting the double-circuit transformer body (111) to the low-voltage cabinet (31) are arranged through the low-voltage cable outlet hole (5); The high-voltage cabinet unit (2) includes two circuit high-voltage cabinets (21) corresponding to the double-circuit transformer body (111); The transformer space (1) and the bottom frame of the high-voltage cabinet unit (2) are provided with a high-voltage cable outlet hole (6), and the cables connecting the double-circuit transformer body (111) to the high-voltage cabinet (21) are arranged through the high-voltage cable outlet hole (6).

2. According to claim 1, the quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin substation is characterized in that: The transformer (11), each of the low-voltage cabinets (31), each of the high-voltage cabinets (21), and the corresponding transformer space (1), the corresponding low-voltage cabinet unit (3), or the bottom frame of the corresponding high-voltage cabinet unit (2) are fixed by bolts.

3. According to claim 1, the quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin substation is characterized in that: The two low-voltage cabinets (31) in the low-voltage cabinet unit (3) are both in an out-of-cabinet operation mode and are arranged in two rows in a horizontal direction along two sides with larger areas of the transformer space (1); A maintenance passage (32) is provided between the two rows of low-voltage cabinets (31); In each of the low-voltage cabinets (31), the closest to the transformer space (1) is a low-voltage incoming line (311); A plurality of low-voltage outgoing lines (312) are sequentially arranged on a side of each low-voltage incoming line (311) facing away from the transformer space (1); A capacitor (313) is provided on a side of the low-voltage outlet line (312) of each low-voltage cabinet (31) facing away from the transformer space (1); Among the capacitors (313) of the two low-voltage cabinets (31), at least one of the capacitors (313) is provided with a segment (314) on a side facing away from the transformer space (1).

4. According to claim 3, the quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin substation is characterized in that: The transformer space (1) is provided with a manhole (14) capable of entering the cable well (9); the low-voltage outlet line (312) is connected to the transformer double outlet line by a busbar; the low-voltage inlet line (311) is connected in a factory and connected to the transformer (11) by a low-voltage quick connector.

5. According to the quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin-type substation of claim 1, the two high-voltage cabinets (21) in the high-voltage cabinet unit (2) are both in the cabinet operation mode, and are arranged in two rows in the horizontal direction along the two larger side surfaces of the transformer space (1); An operating channel (22) is provided between the two rows of high-voltage cabinets (21); In each of the high-voltage cabinets (21), the high-voltage connection cabinet (211) is closest to the transformer space (1); The side of each feeder cabinet (211) facing away from the transformer space (1) is provided with the high-voltage connection cabinet (211), the outgoing cabinet (212), the transformer outgoing cabinet (213), and the high-voltage incoming cabinet (214) in sequence.

6. According to the quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin-type substation described in claim 5, the high-voltage incoming line of each high-voltage cabinet (21) adopts high-voltage cable incoming and outgoing lines, and the connection is completed in the factory.

7. According to the quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin-type substation described in claim 1, the outer shells of the transformer space (1), the low-voltage cabinet unit (3) and the high-voltage cabinet unit (2) are all thin LGS assembled cold-bent thin-walled light steel boxes.

8. According to the quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin-type substation described in claim 1, the top of the transformer space (1), the low-voltage cabinet unit (3) and the high-voltage cabinet unit (2) are all provided with a new energy photovoltaic panel structure.

9. According to the quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin-type substation described in claim 1, the prefabricated foundation (4) is a miniaturized factory-made prefabricated foundation, and an assembled factory-made cable channel (41) is arranged on the side; The prefabricated flat plate (7) is a factory prefabricated flat plate.

10. According to the quick dual-power modular top-mounted centralized heat dissipation compact prefabricated cabin-type substation of claim 1, a low-voltage bushing (113) is provided on the upper part of the dual-circuit transformer body (111), and a high-voltage pipe (114) is provided on the side; The low-voltage cabinet unit (3) further includes an industrial air conditioner (34) and a fusion terminal (35); The high-voltage cabinet unit (2) also includes a communication screen (23), an automation cabinet (24) and an AC screen (25).

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