Prefabricated transformer substation

Abstract

The utility model provides a prefabricated substation, and relates to the technical field of substations. The prefabricated substation comprises a low-voltage chamber, a transformer chamber and a medium-voltage chamber which are sequentially arranged in the length direction. An oil conservator, a radiator and a fan are arranged in the transformer chamber. The oil conservator is used for containing an iron core and a coil of the transformer. The radiator comprises a first oil pipe and a second oil pipe, and the first oil pipe and the second oil pipe are arranged in the height direction and both communicated with the interior of the oil conservator. And the fan is arranged below or above the radiator. The top side of the transformer chamber is open. The side, opposite to the radiator and the fan, of the transformer chamber is open in the width direction. Under the effect of the fan, air flows into the transformer chamber from the side portion of the transformer chamber, then flows through the radiator and takes away heat of the radiator, and then flows out from the top side of the transformer chamber. The fan improves the heat exchange efficiency between the radiator and the outside air, and further improves the heat dissipation efficiency of the prefabricated substation.

Description

Technical Field

[0001] This disclosure relates to the field of substation technology, and in particular to a prefabricated substation. Background Technology

[0002] A prefabricated substation, also known as a box-type substation, includes a low-voltage room, a transformer room, and a medium-voltage room. The transformer in the transformer room can step up the low-voltage electricity input from the low-voltage room and then output it to the power grid through the medium-voltage room.

[0003] Transformers generate a significant amount of heat during operation. Furthermore, with the rapid development of new energy industries such as photovoltaics and energy storage, transformer capacities are increasing, leading to greater power consumption. Therefore, the heat dissipation efficiency of prefabricated substations needs to be improved. Utility Model Content

[0004] This disclosure provides a prefabricated substation. The transformer compartment of the prefabricated substation includes a fan that drives airflow through a radiator, improving the heat exchange efficiency between the radiator and the outside air, thereby improving the heat dissipation efficiency of the prefabricated substation. The technical solution of the prefabricated substation is described below.

[0005] This disclosure provides a prefabricated substation. The prefabricated substation includes a low-voltage compartment, a transformer compartment, and a medium-voltage compartment arranged sequentially along the length of the prefabricated substation. The transformer compartment includes an oil conservator, radiators, and fans. The oil conservator houses the transformer core and coils. Along the width of the prefabricated substation, radiators are arranged on one side of the oil conservator. Each radiator includes a first oil pipe and a second oil pipe, which are arranged along the height of the prefabricated substation and both connect to the interior of the oil conservator. Fans are arranged below the radiators and blow air upwards. Alternatively, fans are arranged above the radiators and exhaust air upwards. The top of the transformer compartment is open. Along the width, the sides of the transformer compartment opposite the radiators and fans are open.

[0006] Prefabricated substations can also be called box-type substations.

[0007] The technical solution disclosed herein includes a fan installed below or above the radiator. This fan drives airflow across the radiator, carrying away the heat dissipated by the radiator. The presence of the fan improves the heat exchange efficiency between the radiator and the outside air, thereby increasing the heat dissipation efficiency of the prefabricated substation. Furthermore, the improved heat exchange efficiency allows the radiator to achieve higher heat dissipation efficiency within the same volume, thus reducing its size and lowering costs. Additionally, a smaller radiator reduces the likelihood of cooling oil leakage during transport of the prefabricated substation, improving its reliability.

[0008] In one possible implementation, the prefabricated substation also includes a support frame, which is fixedly connected to the side wall of the oil conservator or the bottom wall of the transformer compartment. Fans are arranged below the radiators, and the support frame is arranged below the fans, supporting them. On the one hand, the support frame serves to fix the fans in place. On the other hand, the support frame arranged below the fans also ensures a highly stable air intake space between the bottom of the fans and the bottom wall of the transformer compartment.

[0009] In one possible implementation, the bracket has a frame structure. This reduces the impact of the bracket on the air intake at the bottom of the fan.

[0010] In one possible implementation, the height of the bracket is greater than 300mm. This ensures sufficient space between the bottom of the fan and the bottom wall of the transformer room for air intake, suction, or exhaust.

[0011] In one possible implementation, the transformer compartment also includes an oil conservator located above and connected to the oil conservator. Fans are arranged above the radiators and along the width of the conservator on one side. The oil conservator is used to regulate the fluid level in the oil conservator. When the oil temperature rises, the cooling oil in the oil conservator expands, causing excess coolant to flow into the oil conservator. Conversely, when the temperature decreases, the cooling oil in the oil conservator flows back into the oil conservator.

[0012] The technical solution provided in this disclosure utilizes the height space of the oil conservator, which occupies part of the height space of the transformer room, by arranging the fans on one side of the oil conservator. This allows the height of the radiator to be reduced, or only reduced by a very small amount, so that the height of the radiator does not need to be reduced for the arrangement of the fans.

[0013] In one possible implementation, the prefabricated substation also includes a support frame, which is fixedly connected to the side wall of the oil conservator or the top wall of the transformer compartment. The support frame includes mounting holes that extend through the frame along its height, and a fan is located within these mounting holes.

[0014] Since the mounting holes extend through the bracket along the height direction, the bracket does not obstruct the upward airflow from the fan. Furthermore, the fan is positioned within the mounting holes of the bracket, rather than above it, reducing the space occupied by the fan and bracket in the height direction. This minimizes the impact on the height of the heatsink, eliminating the need to lower the heatsink's height.

[0015] In one possible implementation, the prefabricated substation also includes a side door located on the open side of the transformer compartment, serving to protect this open area. The side door features a grille structure. This allows the side door to protect the internal components of the transformer compartment, and the grille structure design reduces the impact of the side door on ventilation in the transformer compartment. Maintenance personnel can then access the interior of the transformer compartment through the side door to perform maintenance work.

[0016] In one possible implementation, the prefabricated substation also includes a skylight located on the open top side of the transformer room, serving to protect this open area. The skylight has a grille structure. This allows the skylight to protect the internal components of the transformer room, and the grille structure design reduces the impact of the skylight on ventilation on the top side of the transformer room.

[0017] In one possible implementation, the transformer compartment includes two rows of radiators and two rows of fans. Each row of radiators comprises multiple radiators, and each row of fans comprises multiple fans. The two rows of radiators are arranged on either side of the oil conservator along the width direction. The two rows of fans are arranged below or above the two rows of radiators. The transformer compartment is open on both opposite sides along the width direction. By installing two rows of radiators and two rows of fans, the heat dissipation efficiency of the prefabricated substation is improved.

[0018] In one possible implementation, the distance between the bottom of the radiator and the bottom wall of the transformer chamber is d1, where d1 is greater than 450mm. Fans are arranged between the bottom of the radiator and the bottom wall of the transformer chamber. By setting d1 greater than 450mm, sufficient height space is provided between the bottom of the radiator and the bottom wall of the transformer chamber for fan arrangement.

[0019] In one possible implementation, the fans are positioned below the heatsink. The distance between the bottom of the fans and the bottom wall of the transformer compartment is d3, where d3 is greater than 300mm. This provides sufficient space between the bottom of the fans and the bottom wall of the transformer compartment for air intake, suction, or exhaust.

[0020] In one possible implementation, the distance between the first and second oil pipes is d2, where d2 is less than 1700mm. This means the radiator is shorter, reducing the risk of oil leakage. Furthermore, the presence of the fan allows the shorter radiator to achieve higher cooling efficiency. Attached Figure Description

[0021] Figure 1 This is an external view of a prefabricated substation provided in an embodiment of this disclosure;

[0022] Figure 2 This is a schematic diagram of a prefabricated substation with a concealed side door and skylight provided in an embodiment of this disclosure;

[0023] Figure 3 This is a schematic diagram of the internal components of a transformer chamber provided in an embodiment of this disclosure;

[0024] Figure 4 This is a schematic diagram of the components inside a transformer chamber as seen from the length direction, according to an embodiment of this disclosure.

[0025] Figure 5 This is a wind flow path diagram of a prefabricated substation provided in an embodiment of this disclosure;

[0026] Figure 6 This is a schematic diagram of a prefabricated substation provided in this embodiment of the present disclosure, viewed from the width direction.

[0027] Figure 7 This is a schematic diagram of another prefabricated substation with a hidden side door and skylight provided in this embodiment of the present disclosure;

[0028] Figure 8 This is a schematic diagram of another device inside a transformer chamber provided in an embodiment of this disclosure;

[0029] Figure 9 This is a schematic diagram of the internal components of a transformer chamber provided in another embodiment of this disclosure, viewed from the length direction.

[0030] Figure 10 This is a schematic diagram of a row of fans provided in an embodiment of this disclosure.

[0031] Legend

[0032] 1. Low-pressure chamber;

[0033] 2. Transformer room; 21. Oil conservator; 22. Radiator; 221. First oil pipe; 222. Second oil pipe; 223. Heat sink; 23. Fan; 24. Side door; 25. Skylight; 26. Bracket; 260. Mounting hole; 27. Oil tank; 201. First ventilation opening; 202. Second ventilation opening;

[0034] 3. Medium pressure chamber. Detailed Implementation

[0035] The main function of a prefabricated substation is to collect multiple low-voltage AC power sources generated by inverters or power conversion systems (PCS), raise them to the rated voltage via transformers, and then connect them to the power grid.

[0036] Prefabricated substations can also be called containerized substations. A prefabricated substation consists of a container, which includes a low-voltage compartment, a transformer compartment, and a medium-voltage compartment. The low-voltage compartment, also known as the low-voltage component compartment, mainly includes low-voltage cabinets and secondary circuit cables. Its main function is to collect the low-voltage current generated by multiple inverters or energy storage converters and send it to the low-voltage side of the transformer for step-up. The transformer compartment mainly includes power transformers (referred to as transformers). The transformers are used for voltage conversion, raising the low-voltage side current to the rated voltage and outputting it to the medium-voltage compartment. The medium-voltage compartment, also known as the medium-voltage component compartment, mainly includes ring main units, medium-voltage bushings, and medium-voltage cables. The medium-voltage compartment is used to connect the transformer output current to the power grid. Since the voltage corresponding to the medium-voltage compartment is higher than that corresponding to the low-voltage compartment, the medium-voltage compartment can also be called the high-voltage compartment.

[0037] Prefabricated substations can be directly connected and used after being transported to the site, thus offering advantages such as convenient installation, flexible layout, short construction period, and easy relocation. With the rapid development of new energy industries such as photovoltaics and energy storage, prefabricated substations are widely used in these sectors.

[0038] During the operation of prefabricated substations, transformers generate a significant amount of heat. Furthermore, as the capacity of inverters (such as photovoltaic inverters) and energy storage converters increases, the transformer capacity also needs to be increased accordingly, leading to ever-increasing power consumption by the transformers. Consequently, the heat dissipation power required for prefabricated substations is also growing.

[0039] In view of the above-mentioned technical problems, this disclosure provides a prefabricated substation. Figure 1 An external view of the prefabricated substation is shown. (For example...) Figure 1 As shown, the prefabricated substation includes a low-voltage room 1, a transformer room 2, and a medium-voltage room 3 arranged sequentially along the length X of the prefabricated substation.

[0040] Figure 2 A schematic diagram showing the concealed side door 24 and skylight 25 of the prefabricated substation is shown. Figure 3 A schematic diagram of the internal components of transformer room 2 is shown. (For example...) Figure 2 and Figure 3As shown, the transformer compartment 2 includes an oil conservator 21 and a radiator 22. The oil conservator 21 houses the transformer's core, coils, and other internal components. The oil conservator 21 contains cooling oil (mineral oil, natural ester, or synthetic ester), and the transformer's core and coils are immersed in this oil, allowing heat dissipated by the transformer to be transferred to it. Along the width Y direction of the prefabricated substation, the radiator 22 is arranged on one side of the oil conservator 21. The radiator 22 includes a first oil pipe 221 and a second oil pipe 222. The first oil pipe 221 and the second oil pipe 222 are arranged along the height Z direction of the prefabricated substation and both connect to the interior of the oil conservator 21. The top of the transformer compartment 2 is open (or exposed), and along the width Y direction, the sides of the transformer compartment 2 opposite to the radiator 22 and fan 23 are open (or exposed). This allows for ventilation between the interior and exterior of the transformer compartment 2.

[0041] The oil tank 21 and the radiator 22 form an internal liquid circulation cooling system. Figure 4 The small arrows in the diagram illustrate the flow path of the cooling oil in the oil tank 21 and the radiator 22. (See diagram for reference.) Figure 4 As shown, under the influence of temperature difference, the cooling oil at the bottom of the oil tank 21 moves upwards, then flows into the interior of the radiator 22 through the first oil pipe 221, and then flows back to the bottom of the oil tank 21 through the second oil pipe 222. During the flow of the cooling oil through the radiator 22, the cooling oil exchanges heat with the outside air, thus achieving cooling.

[0042] In addition, such as Figures 2-4 As shown, the transformer compartment 2 also includes an oil conservator 27, which is located on top of and connected to the oil conservator 21. The oil conservator 27 is used to adjust the oil level in the oil conservator 21. When the oil temperature rises, the cooling oil in the oil conservator 21 expands, and excess cooling oil flows into the oil conservator 27. Conversely, when the temperature drops, the cooling oil in the oil conservator 27 flows back into the oil conservator 21.

[0043] like Figures 2-4 As shown, the interior of the transformer chamber 2 also includes a fan 23, which is arranged below the radiator 22 and blows air upwards. Figure 4 and Figure 5 The large arrows in the diagram illustrate the airflow path of the air blown out by fan 23. (See diagram for example.) Figure 4 and Figure 5 As shown, the bottom of fan 23 draws in air through the open side of transformer chamber 2 and blows it upwards. After passing through radiator 22, the airflow exits from the open top side of transformer chamber 2. During the airflow through radiator 22, the air carries away the heat dissipated by radiator 22.

[0044] The technical solution provided in this disclosure improves the heat exchange efficiency between the radiator 22 and the outside air by incorporating a fan 23. This increased heat exchange efficiency benefits the prefabricated substation by increasing its heat dissipation capacity, ensuring it matches the transformer's capacity. Furthermore, it allows the radiator 22 to achieve a large heat dissipation capacity without being excessively large, facilitating its miniaturization. A smaller radiator 22 is also less prone to oil leakage during transport, thus improving the reliability of the prefabricated substation during transportation.

[0045] The system in which fan 23 drives airflow through radiator 22 and dissipates heat from radiator 22 can also be called the external ventilation and cooling system of the prefabricated substation. The external ventilation and cooling system of the prefabricated substation, together with the internal liquid circulation cooling system, forms the transformer cooling system of the prefabricated substation.

[0046] In some examples, such as Figure 3 and Figure 4 As shown, the radiator 22 includes multiple heat sinks 223, which are arranged at intervals along the width direction Y. Each heat sink 223 has an internal flow channel. The top end of each heat sink 223 connects to a first oil pipe 221, and the bottom end connects to a second oil pipe 222. Cooling oil in the oil reservoir 21 flows into the radiator 22 via the first oil pipe 221, flows downwards through the multiple heat sinks 223, and returns to the oil reservoir 21 via the second oil pipe 222. A gap exists between adjacent heat sinks 223, forming an airflow channel for the airflow from the fan 23. This increases the contact area between the radiator 22 and the outside air, and also improves the heat exchange efficiency between the radiator 22 and the outside air. The fan 23 and the airflow channel formed between the multiple heat sinks 223 are opposite each other.

[0047] In some examples, such as Figures 2-4 As shown, the interior of transformer compartment 2 includes two rows of radiators 22 and two rows of fans 23. Each row of radiators 22 includes multiple radiators 22, and each row of fans 23 includes multiple fans 23. Along the width direction Y, the two rows of radiators 22 are arranged on both sides of the oil conservator 21. The two rows of fans 23 are respectively arranged below the two rows of radiators 22. The transformer compartment 2 is open on both opposite sides along the width direction Y.

[0048] The design of two rows of radiators 22 and two rows of fans 23 can increase the heat dissipation area of ​​the prefabricated substation, thereby improving the heat dissipation efficiency of the prefabricated substation.

[0049] Of course, in other examples, the interior of the transformer room 2 may only include a row of radiators 22 and a row of fans 23, and this disclosure does not limit this.

[0050] It should be noted that the number of heat sinks 22 is not limited in the embodiments of this disclosure. In some examples, each row of heat sinks 22 includes 2-6 heat sinks 22. The number of heat sinks 22 in two rows can be the same or different. The number of fans 23 is also not limited in the embodiments of this disclosure. In some examples, each row of fans 23 includes 2-6 fans 23. The number of fans 23 in two rows can be the same or different. The number of fans 23 can be the same as or different from the number of heat sinks 22. In some examples, such as Figure 3 As shown, the number of fans 23 is the same as the number of heat sinks 22, so the multiple fans 23 are respectively paired with the multiple heat sinks 22.

[0051] It should be noted that the transformer room 2 is open on one or both sides along the width direction Y, which can also be understood as the transformer room 2 including the first ventilation opening 201 on one or both sides along the width direction Y. Wherein, as Figure 6 As shown, each first vent 201 is opposite to all the radiators 22 in a corresponding row of radiators 22 and all the fans 23 in a corresponding row of fans 23. The larger first vent 201 improves the ventilation effect of the transformer room 2 and enhances the heat dissipation efficiency of the prefabricated substation.

[0052] In some examples, such as Figure 6 As shown, along the width direction Y, the projections of all heat sinks 22 in each column of heat sinks 22 and all fans 23 in each column of fans 23 are located within the projection range of the first vent 201.

[0053] In some examples, such as Figure 1 As shown, the prefabricated substation also includes a side door 24, located on the open side of the transformer compartment 2, for protection of the open side. The side door 24 has a grille structure. The side door 24 protects the internal components of the transformer compartment 2, and the grille structure design reduces the impact of the side door 24 on ventilation of the transformer compartment side. Furthermore, maintenance personnel can enter the interior of the transformer compartment 21 through the side door 24 to perform maintenance work. For example, as... Figure 1 As shown, side door 24 is a double door.

[0054] Of course, in other examples, such as Figure 2 or Figure 5 As shown, the prefabricated substation may also omit the side door 24. This improves the ventilation effect on the side of the transformer room.

[0055] The top side of transformer room 2 is open, which can also be understood as the top side of transformer room 2 including a second ventilation opening 202. Wherein, as Figure 5 As shown, the second vent 202 is opposite to the oil conservator 21 and all the radiators 22 in the two rows of radiators 22. The larger second vent 202 improves the ventilation effect of the transformer room 2 and enhances the heat dissipation efficiency of the prefabricated substation.

[0056] In some examples, such as Figure 1 As shown, the prefabricated substation also includes a skylight 25, located on the open top side of the transformer room 2, for protection of the open top side. The skylight 25 has a grille structure. The skylight 25 protects the internal components of the transformer room 2, and the grille structure design reduces the impact of the skylight 25 on the ventilation of the top of the transformer room 2.

[0057] Of course, in other examples, such as Figure 2 or Figure 5 As shown, the prefabricated substation may also exclude the skylight 25. This improves the ventilation effect at the top of the transformer room 2.

[0058] Since the fan 23 is located below the heat sink 22, sufficient height space needs to be left between the bottom of the heat sink 22 and the bottom wall of the transformer chamber 2 to arrange the fan 23, and sufficient air intake space needs to be left between the fan 23 and the bottom wall of the transformer chamber 2. Figure 6 A schematic diagram of a prefabricated substation viewed from the Y-angle along its width is shown. In some examples, such as... Figure 6 As shown, the distance between the bottom of the radiator 22 and the bottom wall of the transformer chamber 2 is d1, and d1 is greater than 450mm. It is understandable that d1 should not be too large, otherwise the height of the radiator 22 will be too small, and the heat dissipation area of ​​the radiator 22 will be too small. Therefore, in some examples, d1 is less than 1150mm.

[0059] Furthermore, the aforementioned fan 23 improves the heat dissipation efficiency between the radiator 22 and the outside air, allowing the radiator 22 to achieve high heat dissipation efficiency without needing to be excessively tall. In some examples, such as... Figure 6 As shown, the distance between the first oil pipe 221 and the second oil pipe 222 is d2, which is less than 1700mm. This reduces the risk of oil leakage from the radiator 22 during the transportation of the prefabricated substation. However, d2 should not be too large, otherwise the heat dissipation area will be too small. For example, d2 is greater than 1000mm. Here, d2 can be understood as the maximum distance between the first oil pipe 221 and the second oil pipe 222.

[0060] In some examples, such as Figure 6As shown, the distance between the bottom of fan 23 and the bottom wall of transformer chamber 2 is d3, which is greater than 300mm. In this way, there is enough space between the bottom of fan 23 and the bottom wall of transformer chamber 2 for air intake, avoiding the bottom wall of transformer chamber 2 from blocking the air intake side of fan 23, and ensuring that the air volume of fan 23 is large enough.

[0061] To facilitate the installation of fan 23, in some examples, such as Figures 2-5 As shown, the prefabricated substation also includes a bracket 26, which is fixedly connected to the side wall of the oil conservator 21 or the bottom wall of the transformer compartment 2. The bracket 26 is arranged below the fan 23 and supports the fan 23. On the one hand, the bracket 26 serves to fix the fan 23. On the other hand, the bracket 26 arranged below the fan 23 also provides a highly stable air intake space between the bottom of the fan 23 and the bottom wall of the transformer compartment 2.

[0062] In some examples, such as Figures 2-5 As shown, the prefabricated substation includes multiple brackets 26, each bracket 26 supporting a fan 23.

[0063] In some examples, such as Figures 2-5 As shown, the bracket 26 has a frame structure. This reduces the impact of the bracket 26 on the bottom-side air intake of the fan 23. For example, as... Figures 2-5 As shown, the bracket 26 is composed of multiple support beams and support columns connected together, so that air can pass through all sides of the bracket 26 and enter the fan 23.

[0064] In some examples, such as Figures 2-5 As shown, the height of the bracket 26 is greater than 300mm to ensure that there is sufficient space between the bottom of the fan 23 and the bottom wall of the transformer chamber 2 for air intake.

[0065] Besides the aforementioned technical solution of arranging the fan 23 below the heatsink 22, in other examples, the fan 23 can also be arranged above the heatsink 22, with the fan 23 drawing air upwards. Figure 7 A schematic diagram of a prefabricated substation with fans 23 arranged above radiators 22 is shown. Figure 8 A schematic diagram of the internal components of transformer room 2 is shown. Figure 9 A schematic diagram of the internal components of transformer room 2 along the length direction (X-view) is shown.

[0066] In some examples, such as Figures 7-9 As shown, the fan 23 is arranged above the heatsink 22 and along the width direction Y, the fan 23 is arranged on one side of the oil conservator 27. In some examples, such as Figures 7-9 As shown, along the width direction Y, two rows of fans 23 are arranged on both sides of the oil conservator 27.

[0067] Since the oil conservator 27 itself occupies a portion of the height space of the transformer room 2, by arranging the fans 23 on one side of the oil conservator 27, the height space of the oil conservator 27 is reused for the arrangement of the fans 23. This means that the height of the radiator 22 does not need to be reduced due to the arrangement of the fans 23, or only needs to be reduced by a very small amount. Furthermore, since the bottom side of the fans 23 is aligned with the airflow between the multiple heat sinks 223 of the radiator 22, the distance between the bottom side of the fans 23 and the radiator 22 does not need to be too large to draw air. This also means that the height of the radiator 22 does not need to be reduced due to the arrangement of the fans 23, or only needs to be reduced by a very small amount. In this way, the prefabricated substation can achieve a greater heat dissipation capacity, which is beneficial for the installation of larger capacity transformers in prefabricated substations.

[0068] Of course, provided that the heat dissipation requirements are met, users can also choose to reduce the height of the radiator 22 to reduce the risk of oil leakage during the transportation of the prefabricated substation. Relevant parameters such as the height of the radiator 22 (i.e., the distance d2 between the first oil pipe 221 and the second oil pipe 222), and the distance d1 between the bottom of the radiator 22 and the bottom wall of the transformer compartment 2 can be found in the foregoing content and will not be repeated here.

[0069] In some examples, such as Figure 8 As shown, the prefabricated substation also includes a bracket 26, which is fixedly connected to the side wall of the oil conservator 21 or the top wall of the transformer room 2, and supports the fan 23. For example, the bracket 26 is arranged on one side of the oil tank 27 along the width direction Y.

[0070] Figure 10 A schematic diagram of bracket 26 and fan 23 is shown, in some examples, such as Figure 10 As shown, the bracket 26 includes a mounting hole 260 that extends through the bracket 26 along the height direction Z, and the fan 23 is located within the mounting hole 260. Since the mounting hole 260 extends through the bracket 26 along the height direction Z, the bracket 26 does not obstruct the upward airflow from the fan 23. Furthermore, the fan 23 is positioned within the mounting hole 260 of the bracket 26, rather than being positioned above the bracket 26, reducing the space occupied by the fan 23 and the bracket 26 in the height direction Z, thus minimizing the impact on the height of the heatsink 22 and eliminating the need to lower the height of the heatsink 22.

[0071] In some examples, such as Figure 8 As shown, the prefabricated substation includes two supports 26. Along the width direction Y, the two supports 26 are arranged on both sides of the oil tank 27. Figure 10 As shown, each bracket 26 includes multiple mounting holes 260, and each fan 23 is located in one mounting hole 260.

[0072] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "an," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects. "Upper," "lower," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. "A plurality" refers to two or more, unless otherwise expressly defined.

[0073] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A prefabricated substation, characterized in that, The prefabricated substation includes a low-voltage room (1), a transformer room (2) and a medium-voltage room (3) arranged sequentially along the length direction (X) of the prefabricated substation. The transformer room (2) includes an oil tank (21), a radiator (22) and a fan (23). The oil conservator (21) is used to house the core and coil of the transformer. Along the width direction (Y) of the prefabricated substation, the radiator (22) is arranged on one side of the oil conservator (21). The radiator (22) includes a first oil pipe (221) and a second oil pipe (222). The first oil pipe (221) and the second oil pipe (222) are arranged along the height direction (Z) of the prefabricated substation and are both connected to the interior of the oil tank (21). The fan (23) is arranged below the radiator (22) and blows air upwards, or the fan (23) is arranged above the radiator (22) and draws air upwards; The top side of the transformer chamber (2) is open, and along the width direction (Y), the side of the transformer chamber (2) opposite to the radiator (22) and the fan (23) is open.

2. The prefabricated substation according to claim 1, characterized in that, The prefabricated substation also includes a support (26), which is fixedly connected to the side wall of the oil tank (21) or the bottom wall of the transformer room (2); The fan (23) is arranged below the heat sink (22), and the bracket (26) is arranged below the fan (23) and supports the fan (23).

3. The prefabricated substation according to claim 2, characterized in that, The height of the bracket (26) is greater than 300mm.

4. The prefabricated substation according to claim 1, characterized in that, The transformer room (2) also includes an oil conservator (27), which is located above the oil tank (21) and is connected to the oil tank (21); The fan (23) is arranged above the radiator (22) and along the width direction (Y), the fan (23) is arranged on one side of the oil conservator (27).

5. The prefabricated substation according to claim 4, characterized in that, The prefabricated substation also includes a support (26), which is fixedly connected to the side wall of the oil tank (21) or the top wall of the transformer room (2); The bracket (26) includes a mounting hole (260) that extends through the bracket (26) along the height direction (Z), and the fan (23) is located in the mounting hole (260).

6. The prefabricated substation according to any one of claims 1-5, characterized in that, The prefabricated substation also includes a side door (24), which is located on the open side of the transformer room (2) and is used to protect the open side. The side door (24) has a grille structure.

7. The prefabricated substation according to any one of claims 1-6, characterized in that, The prefabricated substation also includes a skylight (25), which is fixed to the open top side of the transformer room (2) for protection of the open top side. The skylight (25) has a grid structure.

8. The prefabricated substation according to any one of claims 1-3, characterized in that, The distance between the bottom of the radiator (22) and the bottom wall of the transformer chamber (2) is d1, where d1 is greater than 450mm; The fan (23) is arranged between the bottom of the radiator (22) and the bottom wall of the transformer chamber (2).

9. The prefabricated substation according to claims 1-3, characterized in that, The fan (23) is arranged below the radiator (22), and the distance between the bottom of the fan (23) and the bottom wall of the transformer chamber (2) is d3, which is greater than 300mm.

10. The prefabricated substation according to any one of claims 1-9, characterized in that, The distance between the first oil pipe (221) and the second oil pipe (222) is d2, which is less than 1700mm.

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