Double-layer double-transformer box-type substation

Abstract

The utility model discloses a double -deck double -transformer box -type substation, including box, top cover and baffle, the box is divided into high -low voltage layer and transformer layer by baffle, and transformer layer is located high -low voltage layer top, and top cover is located transformer layer top. Transformer layer includes first, second transformer room, and high -low voltage layer includes adjacent high -voltage cable isolation chamber, high -voltage chamber and low -voltage chamber, and the first ventilation groove is equipped with between transformer layer and high -low voltage layer, and top cover is equipped with ventilation structure, and the first ventilation groove and ventilation structure form the heat dissipation channel of transformer layer, and the second ventilation groove and exhaust structure that high -low voltage layer outside set form the heat dissipation channel of high -low voltage layer. The utility model two transformer rooms can assemble two transformers on the upper layer structure, and the lower layer is high -low voltage cabinet, compared with the conventional single -deck or double -deck box -type substation, and the upper and lower layers adopt independent heat dissipation and do not interfere with each other, can effectively avoid the lower layer equipment heating too big influence upper layer transformer operating condition.

Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of power equipment technology, and in particular to a double-layer double-transformer box-type substation. Background Technology

[0002] Prefabricated substations have been widely used and researched in power grid upgrades due to their advantages such as short construction cycle, proximity to load centers, reduced power supply radius, and improved power quality at the user end. Currently, land scarcity during installation limits the space required for new prefabricated substations, leading to a trend towards smaller prefabricated substations. However, most small prefabricated substations consist of only a single unit, resulting in long downtime for maintenance and repairs during faults, failing to provide continuous power to critical loads, and potentially causing significant economic losses. Therefore, a more rationally designed prefabricated substation layout is needed to meet the power demand environment characterized by limited land space and increasing capacity requirements. Utility Model Content

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims. This utility model aims to at least solve one of the technical problems existing in the prior art. To this end, embodiments of this utility model provide a double-layer, double-transformer box-type substation, with two transformer rooms on the upper layer for accommodating two transformers, and a high- and low-voltage switchgear structure on the lower layer. Compared with conventional single-layer or double-layer box-type substations, it occupies less floor space, and the upper and lower layers use independent heat dissipation without interference, effectively preventing excessive heat generation of the lower-layer equipment from affecting the operating conditions of the upper-layer transformer.

[0004] This utility model embodiment provides a double-layer, double-transformer box-type substation, including a box body, a top cover, and a partition. The box body is divided into a high-voltage layer and a transformer layer by the partition. The transformer layer is located above the high-voltage layer and the top cover is located above the transformer layer. The transformer layer includes a first transformer compartment and a second transformer compartment. The high-voltage layer includes a high-voltage cable isolation compartment, a high-voltage compartment, and a low-voltage compartment. The high-voltage cable isolation compartment and the high-voltage compartment are adjacent to each other, and the low-voltage compartment is located on both sides of the high-voltage compartment. A first ventilation slot is provided between the transformer layer and the high-voltage layer, and a ventilation structure is provided on the top cover. The first ventilation slot and the ventilation structure form a heat dissipation channel for the transformer layer. A second ventilation slot and an exhaust structure are provided on the outer side of the high-voltage layer. The second ventilation slot and the exhaust structure form a heat dissipation channel for the high-voltage layer.

[0005] According to some embodiments of the present invention, the ventilation structure includes a first ventilation duct and a second ventilation duct, wherein the first ventilation duct is disposed above the first transformer room and the second ventilation duct is disposed above the second transformer room.

[0006] According to some embodiments of the present invention, the position of the first ventilation slot corresponds to the first transformer room and the second transformer room. The first transformer room and the second transformer room are interconnected. External air enters the transformer layer through the first ventilation slot to provide air for the first transformer room and the second transformer room to maintain ventilation and heat dissipation of the internal environment, and is discharged from the transformer layer through the first ventilation duct and the second ventilation duct.

[0007] According to some embodiments of this utility model, the second ventilation slot is disposed on the door corresponding to the high-pressure chamber and the low-pressure chamber, the high-pressure chamber and the low-pressure chamber are interconnected, and the exhaust structure is disposed on the side wall door corresponding to the low-pressure chamber; external air enters the high and low pressure layers through the second ventilation slot, providing air to the high-pressure chamber and the low-pressure chamber to maintain ventilation and heat dissipation of the internal environment, and is discharged from the high and low pressure layers through the exhaust structure.

[0008] According to some embodiments of this utility model, the side wall door corresponding to the low-pressure chamber is provided with an exhaust port, the exhaust structure is provided with an arc surface and a vertical surface, the arc surface, the vertical surface and the side wall door are connected to each other to form an exhaust cavity, and the external air is discharged from the high and low pressure layers in sequence through the exhaust port and the exhaust cavity.

[0009] According to some embodiments of this utility model, the high-voltage room is equipped with high-voltage switchgear, the transformer layer is equipped with transformer equipment, a cable channel is provided between the high and low voltage layers and the transformer layer, and the cable of the transformer equipment is connected to the high-voltage switchgear through the cable channel.

[0010] According to some embodiments of the present invention, the high-voltage switchgear includes a first distribution transformer cabinet, the transformer equipment includes a first transformer, the first transformer is located in the first transformer room, the cable channel includes a first cable underpass channel, and the cable of the first transformer passes through the first cable underpass channel and connects to the first distribution transformer cabinet.

[0011] According to some embodiments of the present invention, the high-voltage switchgear includes a second distribution transformer cabinet, the transformer equipment includes a second transformer, the second transformer is located in the second transformer room, the cable channel includes a second cable underpass channel, and the cable of the second transformer passes through the second cable underpass channel and connects to the second distribution transformer cabinet.

[0012] According to some embodiments of this utility model, a cable outlet hole is provided between the high-voltage cable isolation chamber and the high-voltage chamber.

[0013] According to some embodiments of this utility model, the high-voltage room is further provided with a high-voltage incoming cabinet and a high-voltage outgoing cabinet, the high-voltage outgoing cabinet being located between the high-voltage incoming cabinet and the first distribution transformer cabinet; the low-voltage room is provided with low-voltage switchgear, the low-voltage switchgear including a low-voltage incoming cabinet, a capacitor cabinet and a low-voltage outgoing cabinet.

[0014] The present invention has at least the following beneficial effects: (1) The upper layer has two transformer rooms that can accommodate two transformers, and the lower layer has a high and low voltage switchgear structure. Compared with conventional single-layer or double-layer box-type transformers, it has a smaller footprint, a more compact spatial layout, a larger power supply capacity, and higher reliability; (2) The upper and lower layers adopt independent heat dissipation methods and do not interfere with each other, which can effectively prevent the lower layer equipment from overheating and affecting the operating conditions of the upper layer transformer. The upper layer has two transformer rooms that can accommodate two transformers, and the lower layer has a high and low voltage switchgear structure. Compared with conventional single-layer or double-layer box-type transformers, it has a smaller footprint, a more compact spatial layout, a larger power supply capacity, and higher reliability. Moreover, the upper and lower layers adopt independent heat dissipation and do not interfere with each other, which can effectively prevent the lower layer equipment from overheating and affecting the operating conditions of the upper layer transformer.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0017] Figure 1 This is a front view of the double-layer, double-transformer box-type substation provided in this embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the transformer layer provided in an embodiment of the present invention;

[0019] Figure 3 This is a side view of a double-layer, double-transformer box-type substation provided in an embodiment of this utility model;

[0020] Figure 4 This is a rear view of the double-layer, double-transformer box-type substation provided in this embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the high and low pressure layers provided in this embodiment of the utility model;

[0022] Figure 6This is a top view of the spatial structure of the high and low pressure layers provided in this embodiment of the utility model;

[0023] Figure 7 This is a top view of the transformer layer structure provided in this embodiment of the utility model;

[0024] Figure 8 This is a top view of the high and low pressure layer structure provided in this embodiment of the utility model;

[0025] Reference numerals: Box body 110; Top cover 120; Ventilation structure 130; Rotary handle 140; Transformer layer 111; High and low voltage layers 112; First transformer compartment 210; Second transformer compartment 220; First ventilation slot 230; Exhaust port 240; First ventilation duct 131; Second ventilation duct 132; High voltage compartment 410; First low voltage compartment 420; Second low voltage compartment 430; High voltage cable isolation compartment 440; Second ventilation slot 510; Exhaust structure 520; First transformer 610; First Cable underpass 620; Second transformer 630; Second cable underpass 640; First distribution transformer cabinet 710; Second distribution transformer cabinet 720; Cable outlet 730; High-voltage incoming cabinet 740; High-voltage outgoing cabinet 750; First low-voltage incoming cabinet 421; First low-voltage outgoing cabinet 422; First outgoing switch 4221; First low-voltage capacitor cabinet 423; Second low-voltage incoming cabinet 431; Second low-voltage outgoing cabinet 432; Second outgoing switch 4321; Second low-voltage capacitor cabinet 433. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0031] See Figure 1 , Figure 1 This is a front view of a double-layer, double-transformer prefabricated substation provided in this embodiment of the utility model. The structure of the double-layer, double-transformer prefabricated substation includes a housing 110, a top cover 120, and multiple partitions, all connected in a specific manner to form a whole. The partitions within the housing 110 serve to divide the space, separating it into two functionally distinct areas: a transformer layer 111 and a high- and low-voltage layer 112. Specifically, the transformer layer 111 is located above the high- and low-voltage layer 112, and the top cover 120 is installed above the transformer layer 111. This layered arrangement allows equipment with different functions to operate in their respective independent spaces, avoiding mutual interference between equipment at different levels, and also providing convenient conditions for independent operation and maintenance of each layer.

[0032] Furthermore, such as Figure 2 As shown, the internal structure of the transformer layer 111 includes a first transformer chamber 210 and a second transformer chamber 220, which are the installation spaces for core equipment such as transformers. To achieve effective heat dissipation in the transformer layer 111, a first ventilation slot 230 is provided between the transformer layer 111 and the high and low voltage layers 112, and a ventilation structure 130 is provided on the top cover 120. The first ventilation slot 230 and the ventilation structure 130 work together to form a heat dissipation channel penetrating the transformer layer 111. This heat dissipation channel can promptly dissipate the heat generated during transformer operation, ensuring that the transformer remains within a suitable operating temperature range, which is beneficial for maintaining stable transformer operation.

[0033] In one feasible embodiment, the ventilation structure 130 comprises a first ventilation duct 131 and a second ventilation duct 132. The first ventilation duct 131 is positioned above the first transformer chamber 210, and the second ventilation duct 132 is positioned above the second transformer chamber 220. This corresponding arrangement allows hot air generated in each transformer chamber to be quickly discharged through the corresponding ventilation duct, improving the targetedness and efficiency of heat dissipation. Furthermore, the position of the first ventilation slot 230 corresponds to the first transformer chamber 210 and the second transformer chamber 220; that is, the first ventilation slot 230 is arranged around the first transformer chamber 210 and the second transformer chamber 220. This design allows external air to quickly enter the transformer layer 111 through the first ventilation slot 230. Simultaneously, since the first transformer chamber 210 and the second transformer chamber 220 are interconnected, the incoming air can flow between the two chambers, providing sufficient air for the transformer equipment in both chambers to maintain ventilation and heat dissipation of the internal environment. Finally, the air carrying heat is discharged from the transformer layer 111 through the first ventilation duct 131 and the second ventilation duct 132, forming a complete and efficient air circulation heat dissipation path.

[0034] In one feasible embodiment, in addition to the front of the housing 110, the first ventilation slots 230 are provided around the housing 110 (including the sides and back), such as... Figure 3 and 4 As shown. This multi-directional design greatly increases the path and area for air intake, allowing more external air to be introduced, thereby enhancing the heat dissipation effect. Even if air intake is obstructed on one side of the enclosure 110 due to external environmental factors (such as stacked items), the ventilation slots on other sides and the back can still allow normal air intake, ensuring the stability and reliability of the heat dissipation channel and ensuring that the heat dissipation of the transformer layer 111 is not affected by poor air intake in one direction.

[0035] In one feasible embodiment, such as Figure 4-6 As shown, the high and low voltage layer 112 internally includes a high voltage chamber 410, a first low voltage chamber 420, a second low voltage chamber 430, and a high voltage cable isolation chamber 440. The high voltage cable isolation chamber 440 is arranged adjacent to the high voltage chamber 410. This layout facilitates the introduction and connection of high voltage cables while effectively isolating and protecting them, reducing safety hazards. The first low voltage chamber 420 and the second low voltage chamber 430 are respectively located on either side of the high voltage chamber 410 and the high voltage cable isolation chamber 440, which is beneficial for the wiring connection between high and low voltage equipment.

[0036] Furthermore, such as Figure 5As shown, to achieve effective heat dissipation of the high and low pressure layers 112, a second ventilation slot 510 and an exhaust structure 520 are provided on its outer surface. The two work together to form a heat dissipation channel for the high and low pressure layers 112. This channel can promptly dissipate the heat generated by the operation of the equipment in the high pressure chamber 410 and the low pressure chamber, ensuring that the equipment operates in a suitable temperature environment and maintaining its stable operating performance.

[0037] In one feasible embodiment, the second ventilation slot 510 is disposed on the door corresponding to the high-pressure chamber 410 and the low-pressure chamber. Since the high-pressure chamber 410 and the low-pressure chamber are interconnected, the air entering through the second ventilation slot 510 can flow between the chambers, ensuring that each area receives sufficient air for heat dissipation. The exhaust structure 520 is disposed on the side wall door corresponding to the low-pressure chamber. Specifically, the side wall doors of the first low-pressure chamber 420 and the second low-pressure chamber 430 are both provided with exhaust structures 520. After external air enters the high-low pressure layer 112 through the second ventilation slot 510, it provides the air required for ventilation and heat dissipation for the high-pressure chamber 410 and the low-pressure chamber, while carrying heat and being discharged from the high-low pressure layer 112 through the exhaust structure 520, forming a complete air circulation and effectively improving heat dissipation efficiency.

[0038] In one feasible embodiment, such as Figure 3 As shown, both the first low-pressure chamber 420 and the second low-pressure chamber 430 have exhaust vents 240 on their side wall doors. The exhaust structure 520 has an arc surface and a vertical surface, which are connected to the side wall doors to form an exhaust cavity. External air is discharged from the high and low pressure layers 112 through the exhaust vents 240 and the exhaust cavity. The design of the exhaust cavity can guide the discharged air to a certain extent, reducing the resistance during air discharge and making the heat dissipation process smoother. At the same time, the arc surface can also prevent rainwater, debris, etc. from entering the high and low pressure layers 112 to a certain extent, providing a certain degree of protection.

[0039] In one feasible embodiment, the exhaust structure 520 and the side wall door are laser-welded into a single unit. This connection method makes the connection between the two more robust and reliable, reducing gaps caused by loose connections and thus reducing the risk of rainwater leakage and dust ingress. At the same time, the integrated structure also enhances the overall strength and stability of the exhaust structure 520 and the side wall door, extending the service life of the equipment and making it more adaptable to complex outdoor environmental conditions.

[0040] In one feasible embodiment, high-voltage switchgear is installed in the high-voltage compartment 410, and transformer equipment is installed in the transformer layer 111. To achieve electrical connection between the two, a cable channel is provided between the high-voltage and low-voltage layers 112 and the transformer layer 111. The cables of the transformer equipment can pass through this cable channel to connect to the high-voltage switchgear. This specially designed cable channel can avoid problems such as messiness, wear and tear, or interference from the external environment that may be caused by haphazard cable placement, thus ensuring the stability and safety of power transmission.

[0041] In one feasible embodiment, such as Figure 7 and 8 As shown, the high-voltage switchgear includes a first distribution transformer cabinet 710, and the transformer equipment includes a first transformer 610. The first transformer 610 is located inside the first transformer room 210, and the corresponding cable channel includes a first cable underpass channel 620. The cables of the first transformer 610 pass through the first cable underpass channel 620 and connect to the first distribution transformer cabinet 710. This one-to-one channel design makes the cable connection path between the first transformer 610 and the first distribution transformer cabinet 710 clear and unambiguous, facilitating cable laying during installation and subsequent inspection and maintenance, while also reducing cross-interference between different cables.

[0042] In one feasible embodiment, the high-voltage switchgear includes a second distribution transformer cabinet 720, and the transformer equipment includes a second transformer 630, which is located within a second transformer compartment 220. The cable channel includes a second cable underpass channel 640, through which the cables of the second transformer 630 pass and connect to the second distribution transformer cabinet 720. Similarly, this design provides a dedicated channel for the connection between the second transformer 630 and the second distribution transformer cabinet 720, further optimizing the cable layout.

[0043] In one feasible embodiment, such as Figure 8 As shown, a cable outlet hole 730 is provided between the high-voltage cable isolation chamber 440 and the high-voltage chamber 410. The setting of this cable outlet hole 730 provides a convenient channel for the high-voltage cable to pass through the high-voltage cable isolation chamber 440 and the high-voltage chamber 410, making the introduction of high-voltage cables more standardized, and also playing a certain role in isolation and protection, reducing the external influences on the high-voltage cable during transmission.

[0044] In a feasible embodiment, the high-voltage compartment 410 is further equipped with a high-voltage incoming cabinet 740 and a high-voltage outgoing cabinet 750 (ring network outgoing line), with the high-voltage outgoing cabinet 750 located between the high-voltage incoming cabinet 740 and the first distribution transformer cabinet 710. This cabinet layout makes the power input, distribution, and output process on the high-voltage side more rational. The high-voltage incoming cabinet 740 receives external high-voltage power, which is then distributed via the ring network outgoing line through the high-voltage outgoing cabinet 750, and finally connected to the transformer equipment by the first distribution transformer cabinet 710, forming a complete and orderly high-voltage side power transmission path and improving the reliability of the high-voltage system operation.

[0045] In one feasible embodiment, a low-voltage switchgear is installed in the low-voltage compartment, including a low-voltage incoming cabinet, a capacitor bank, and a low-voltage outgoing cabinet. Specifically, the first low-voltage compartment 420 contains a first low-voltage incoming cabinet 421, a first low-voltage outgoing cabinet 422 (including a first outgoing switch 4221), and a first low-voltage capacitor bank 423; the second low-voltage compartment 430 contains a second low-voltage incoming cabinet 431, a second low-voltage outgoing cabinet 432 (including a second outgoing switch 4321), and a second low-voltage capacitor bank 433. This cabinet configuration within the low-voltage compartment can meet the requirements for receiving, reactive power compensation, and outputting low-voltage power. Each low-voltage compartment is independently equipped with complete low-voltage switchgear, which works in conjunction with the corresponding transformer equipment. This ensures the stability of the low-voltage power supply and facilitates independent operation and maintenance of the low-voltage system in different areas. When a problem occurs in one low-voltage compartment, it will not affect the normal operation of another low-voltage compartment, thus improving the reliability of the entire low-voltage system.

[0046] In one feasible embodiment, the door of the container 110 is provided with a rotating handle 140 to facilitate the opening and closing of the door. The rotating handle 140 can be adjusted according to operational needs. When opening the door, the operator can rotate the handle to a comfortable gripping angle and apply pulling or pushing force to easily open or close the door, reducing operational difficulty. When the door is closed, the rotating handle 140 can be rotated to a position that fits against the door surface, preventing the handle from protruding outwards and colliding with surrounding objects, reducing the risk of handle damage or accidental opening of the door due to collision.

[0047] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of the present utility model.

Claims

1. A double-deck double-transformer cubicle substation, characterized by, The enclosure includes a housing, a top cover, and partitions. The housing is divided into a high-voltage layer and a transformer layer by the partitions. The transformer layer is located above the high-voltage layer and the top cover is located above the transformer layer. The transformer layer includes a first transformer compartment and a second transformer compartment. The high-voltage layer includes a high-voltage cable isolation compartment, a high-voltage compartment, and a low-voltage compartment. The high-voltage cable isolation compartment and the high-voltage compartment are adjacent to each other, and the low-voltage compartment is located on both sides of the high-voltage compartment. A first ventilation slot is provided between the transformer layer and the high-voltage layer. A ventilation structure is provided on the top cover. The first ventilation slot and the ventilation structure form a heat dissipation channel for the transformer layer. A second ventilation slot and an exhaust structure are provided on the outer side of the high-voltage layer. The second ventilation slot and the exhaust structure form a heat dissipation channel for the high-voltage layer.

2. A double-decker double-transformer cubicle substation according to claim 1, characterized in that, The ventilation structure includes a first ventilation duct and a second ventilation duct, wherein the first ventilation duct is located above the first transformer room and the second ventilation duct is located above the second transformer room.

3. A double-decker double-transformer cubicle substation according to claim 2, characterized in that, The first ventilation slot is located corresponding to the first transformer room and the second transformer room. The first transformer room and the second transformer room are interconnected. External air enters the transformer layer through the first ventilation slot to provide air for the first transformer room and the second transformer room to maintain the ventilation and heat dissipation of the internal environment, and is discharged from the transformer layer through the first ventilation duct and the second ventilation duct.

4. A double-decker double-transformer cubicle substation according to claim 1, characterized in that, The second ventilation slot is provided on the door corresponding to the high-pressure chamber and the low-pressure chamber, and the high-pressure chamber and the low-pressure chamber are interconnected. The exhaust structure is provided on the side wall door corresponding to the low-pressure chamber. External air enters the high and low pressure layers through the second ventilation slot, providing air to the high-pressure chamber and the low-pressure chamber to maintain ventilation and heat dissipation of the internal environment, and is discharged from the high and low pressure layers through the exhaust structure.

5. A double-decker double-transformer cubicle substation according to claim 4, characterized in that, The side wall door corresponding to the low-pressure chamber is provided with an exhaust port. The exhaust structure has an arc surface and a vertical surface. The arc surface, the vertical surface and the side wall door are connected to each other to form an exhaust cavity. The external air is discharged from the high and low pressure layers in sequence through the exhaust port and the exhaust cavity.

6. A double-decker double-transformer cubicle substation according to claim 1, characterized in that, The high-voltage room is equipped with high-voltage switchgear, the transformer layer is equipped with transformer equipment, and a cable channel is provided between the high-voltage and low-voltage layers and the transformer layer. The cables of the transformer equipment are connected to the high-voltage switchgear through the cable channel.

7. A double-decker double-transformer cubicle substation according to claim 6, characterized in that, The high-voltage switchgear includes a first distribution transformer cabinet, the transformer equipment includes a first transformer, the first transformer is located in the first transformer room, the cable channel includes a first cable underpass channel, and the cable of the first transformer passes through the first cable underpass channel and connects to the first distribution transformer cabinet.

8. A double-decker double-transformer cubicle substation according to claim 6, characterized in that, The high-voltage switchgear includes a second distribution transformer cabinet, the transformer equipment includes a second transformer, the second transformer is located in the second transformer room, the cable channel includes a second cable underpass channel, and the cable of the second transformer passes through the second cable underpass channel and connects to the second distribution transformer cabinet.

9. A double-decker double-transformer cubicle substation according to claim 1, characterized in that, The high-voltage cable isolation chamber and the high-voltage chamber are provided with a cable outlet hole.

10. A double-decker double-transformer cubicle substation according to claim 7, characterized in that, The high-voltage chamber is further provided with a high-voltage incoming line cabinet and a high-voltage outgoing line cabinet, the high-voltage outgoing line cabinet is arranged between the high-voltage incoming line cabinet and the first power distribution transformer cabinet; the low-voltage chamber is provided with a low-voltage switch device, the low-voltage switch device comprises a low-voltage incoming line cabinet, a capacitor cabinet and a low-voltage outgoing line cabinet.

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