A power transformer frame

Abstract

The application discloses a power transformation framework, which comprises a support assembly, at least two of which are arranged at intervals along a first direction, the support assembly comprising a first support part and a second support part connected with each other, the first support part being a composite insulating material; a crossbeam assembly, which is erected between two adjacent support assemblies, the crossbeam assembly being a composite insulating material, the diameter of the crossbeam assembly being less than a first diameter, and the first support part being located between the crossbeam assembly and the second support part; and an auxiliary support part, which is arranged between the two adjacent support assemblies and supports the crossbeam assembly, the auxiliary support part comprising a first support part and a second support part connected with each other, the first support part being located between the crossbeam assembly and the second support part, and the first support part being a composite insulating material. By arranging the auxiliary support part between the two adjacent support assemblies and supporting the crossbeam assembly, the diameter of the crossbeam assembly can be less than the first diameter, the cost of the crossbeam assembly is reduced, and the advantages of the composite insulating material are embodied.

Description

Technical Field

[0001] This application relates to the field of power transmission insulation equipment technology, and in particular to a substation structure. Background Technology

[0002] As one of the main pieces of equipment in a substation, the substation frame is used to suspend conductors, support conductors, or switchgear and other electrical equipment.

[0003] Currently, some technicians have proposed using composite insulation materials to completely replace the iron frame, thereby changing the wiring method and reducing the land area occupied. However, considering only the material cost, composite insulation materials with the same mechanical strength are much more expensive than steel. The application of composite insulation materials in substation frames will lead to a much higher construction cost compared to traditional iron frames. Although it can save land area, the overall comprehensive cost is still higher than the traditional solution, failing to reflect the true advantages of composite insulation materials. Summary of the Invention

[0004] This application provides a substation frame that can solve the problem of high cost caused by replacing iron frames with composite insulation materials.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is to provide a substation frame, including: support components, at least two of which are spaced apart along a first direction, each support component including a first support portion and a second support portion connected to each other, the first support portion being made of composite insulating material; crossbeam components, erected between two adjacent support components, the crossbeam components being made of composite insulating material, the diameter of the crossbeam components being less than a first diameter, the first support portion being located between the crossbeam components and the second support portion; and auxiliary support members, disposed between two adjacent support components and supporting the crossbeam components, the auxiliary support members including a first support member and a second support member connected to each other, the first support member being located between the crossbeam components and the second support member, the first support member being made of composite insulating material.

[0006] According to one embodiment of this application, the second support portion and / or the second support member is made of metallic material.

[0007] According to one embodiment of this application, the auxiliary support member has three hanging points for attaching wires between itself and the support assembly adjacent to its first side.

[0008] According to one embodiment of this application, no wires are connected between the auxiliary support member and the support component adjacent to its second side, and the second side is opposite to the first side.

[0009] According to one embodiment of this application, the crossbeam assembly between the auxiliary support member and the support assembly adjacent to its first side includes two crossbeam segments, which are connected by flanges. The substation frame includes a first hanging plate, which is disposed at the flange between two adjacent crossbeam segments and is used to hang wires.

[0010] According to one embodiment of this application, flange assemblies are provided between the opposite ends of the two crossbeam segments and the auxiliary support and the support assembly, respectively. The opposite ends of the two crossbeam segments are respectively connected to the flange assemblies. The substation frame includes: a second hanging plate, which is disposed at the connection between the crossbeam segment and the flange assembly. The second hanging plate is used to hang the conductor.

[0011] According to one embodiment of this application, the substation structure is a 110kV substation structure, and the diameter of the crossbeam assembly is below the first diameter, including: the outer diameter of the crossbeam assembly is less than 220mm, and the inner diameter of the crossbeam assembly is less than 190mm.

[0012] According to one embodiment of this application, the substation structure is a 220kV substation structure, and the diameter of the crossbeam assembly is below the first diameter, including: the outer diameter of the crossbeam assembly is less than 370mm, and the inner diameter of the crossbeam assembly is less than 340mm.

[0013] According to one embodiment of this application, it includes: a wiring post, which is correspondingly disposed with a support component and / or an auxiliary support component. The wiring post includes a first end disposed on the support component and / or the auxiliary support component and a second end opposite to the first end. The height of the second end is higher than the height of the crossbeam assembly. The second ends of all wiring posts are electrically connected to each other. At least one wiring post is used to hang a ground wire.

[0014] According to one embodiment of this application, it includes: an equalizing ring disposed on at least one side of the hanging point.

[0015] The beneficial effects of this application are: by setting auxiliary support members between two adjacent support components and using them to support the crossbeam assembly, the diameter of the crossbeam assembly with auxiliary support members can be set below the first diameter when the distance between the two support components is constant, which is smaller than the diameter of the crossbeam assembly without auxiliary support members, thus reducing the cost of the crossbeam assembly. The overall cost of the substation structure is reduced, demonstrating the advantages of composite insulation materials. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0017] Figure 1 This is a schematic diagram of the overall structure of a row of substation structures in one embodiment of the substation structure of this application;

[0018] Figure 2 This is a side view of the support components of an embodiment of the substation structure of this application;

[0019] Figure 3 This is a partial structural diagram of an embodiment of the substation frame of this application, mainly used to show the connection between two crossbeam segments;

[0020] Figure 4 This is a partial structural diagram of an embodiment of the substation frame of this application, mainly used to illustrate the connection between the beam assembly and the support assembly;

[0021] Figure 5 This is a partial structural diagram of another embodiment of the substation frame of this application, mainly used to show the structure of the clamp and the third hanging plate;

[0022] Figure 6 This is a partial structural diagram of one embodiment of the substation structure of this application, mainly used to illustrate the equalizing ring. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] One embodiment of this application provides a substation structure 100, such as... Figure 1 and Figure 2As shown, the structure includes a support assembly 110 and a crossbeam assembly 120. At least two support assemblies 110 are spaced apart along a first direction, and the crossbeam assembly 120 is erected between adjacent support assemblies 110, providing support for the crossbeam assembly 120. The crossbeam assembly 120 is used to connect conductors. At least one support assembly 110 includes a first support portion 111 and a second support portion 112 connected to each other. The first support portion 111 is located between the crossbeam assembly 120 and the second support portion 112. The first support portion 111 is made of composite insulating material, and the second support portion 112 is made of metal. Because the first support portion 111 connected to the crossbeam assembly 120 is made of composite insulating material, it has excellent electrical insulation performance, thereby reducing the electrical safety distance between the conductor and the support assembly 110, effectively reducing the width of the substation structure 100 and land acquisition costs. Meanwhile, the second support portion 112 is made of metal, which helps to reduce costs. In addition, the supporting components 110 of the above-mentioned composite structure are lightweight, not easy to rust or crack, which solves the problems of difficult transportation, installation and maintenance, and reduces transportation and installation costs.

[0025] To further reduce the width of the substation frame 100, such as Figure 1 and Figure 2 As shown, all support components 110 include a first support part 111 and a second support part 112. The first support part 111 is made of composite insulation material to give full play to its electrical insulation performance and minimize the electrical safety distance between the conductor and the support component 110, thereby reducing the width of the substation frame 100 and the land acquisition cost.

[0026] Furthermore, the crossbeam assembly 120 is made of composite insulation material, which has excellent electrical insulation performance and can directly connect to conductors without the need for suspension insulators. Since the conductor's height above ground is constant, eliminating the need for suspension insulators and other conductor-connecting structures reduces the overall height of the substation frame 100 and the amount of material used for suspension insulators and other structures and support components 110. Moreover, by saving on tension insulator strings, suspension insulator strings, and jumpers, the potential wind-induced discharge problem of the substation frame 100 can be eliminated. The substation frame 100, made of composite insulation material, is lightweight, resistant to rust and cracking, has high transportation and installation efficiency, and can achieve maintenance-free operation throughout its entire life cycle, reducing the maintenance costs of the original porcelain insulator strings.

[0027] Because traditional substation structures use metal beam assemblies, requiring combinations of tension insulator strings, suspension insulator strings, or jumpers to connect conductors, the overall height of the substation structure is relatively high. In one embodiment, such as... Figure 1As shown, the crossbeam assembly 120 is made of composite insulation material, which has excellent electrical insulation performance and can directly connect to conductors without the need for suspension insulators or other structures. Since the conductor's height above ground is constant, eliminating the need for suspension insulators and other conductor-connecting structures can reduce the overall height of the substation frame 100 and reduce the material usage of suspension insulators and other structures and support components 110. Furthermore, by saving on tension insulator strings, suspension insulator strings, and jumpers, the potential wind-induced discharge problem of the substation frame 100 can be eliminated. The substation frame 100 using composite insulation material is lightweight, not prone to rust and cracking, has high transportation and installation efficiency, and can achieve maintenance-free operation throughout its entire life cycle, reducing the maintenance costs of the original porcelain insulator strings.

[0028] The longer the diameter of the crossbeam assembly 120 using composite insulation material, the higher its mechanical strength, and the longer its axial length can be set to accommodate more wiring points. However, with the increase in diameter, the manufacturing cost increases sharply, and the material cost also increases accordingly. To reduce the cost of the crossbeam assembly 120, the substation frame 100 also includes an auxiliary support 170. The auxiliary support 170 is set between two adjacent support assemblies 110 and is used to support the crossbeam assembly 120. Thus, with a fixed distance between the two support assemblies 110, the diameter of the crossbeam assembly 120 with the auxiliary support 170 can be set below the first diameter, which is smaller than the diameter of the crossbeam assembly 120 without the auxiliary support 170, thereby reducing the cost of the crossbeam assembly 120. The overall cost of the substation frame 100 is reduced, demonstrating the advantages of composite insulation materials.

[0029] In order to maintain the overall performance of the substation structure 100, such as Figure 1 As shown, the auxiliary support 170 includes a first support 171 and a second support 172. The first support 171 is located between the crossbeam assembly 120 and the second support 172. The first support 171 is made of composite insulating material, and the second support 172 is made of metal material.

[0030] It should be noted that the beam assembly 120, the first support portion 111, and the first support member 171 can adopt a post insulator structure. The post insulator includes an insulator located inside and a rubber shed covering the insulator. Specifically, the insulator can be an insulating tube or an insulating core rod. The insulating tube can be a fiberglass tube made by winding and curing epoxy resin impregnated with glass fiber or aramid fiber, or a hollow pultruded tube formed by pultrusion. The insulating core rod can be a solid core rod made by winding and curing epoxy resin impregnated with glass fiber or aramid fiber, or a pultruded core rod formed by pultrusion. The rubber shed can be made of high-temperature vulcanized silicone rubber, or other forms of rubber material. In other embodiments, the beam assembly 120, the first support portion 111, and the first support member 171 can also be other composite insulating materials, which are not limited here.

[0031] In one embodiment, such as Figure 1 As shown, at least three, for example three, four or more, support components 110 are spaced apart along the first direction, and at this time the substation frame 100 is a row substation frame 100.

[0032] In other embodiments, two support components 110 are spaced apart along the first direction, in which case the substation frame 100 is a single-span substation frame 100.

[0033] In one embodiment, three or multiples of three hanging points for connecting wires are provided between two adjacent support components 110, such as three, six, or nine. The three adjacent hanging points are respectively connected to the three phases A, B, and C, and sufficient intra-phase electrical safety distances must be ensured between the three phases A, B, and C.

[0034] Specifically, such as Figure 1 As shown, there are three hanging points for hanging wires between two adjacent support components 110. The auxiliary support 170 has three hanging points for hanging wires between it and the support component 110 adjacent to its first side, but no wires are hung between the auxiliary support 170 and the support component 110 adjacent to its second side, and the second side is opposite to the first side.

[0035] At this point, if the substation frame 100 is a 110kV substation frame 100, the diameter of the crossbeam assembly 120 below the first diameter includes: the outer diameter of the crossbeam assembly 120 is less than 220mm, such as 220mm, 200mm, 180mm, 160mm or 147mm, etc., and the inner diameter of the crossbeam assembly 120 is less than 190mm, such as 190mm, 170mm, 150mm or 130mm, etc. If the substation frame is a 220kV substation frame 100, the diameter of the crossbeam assembly 120 below the first diameter includes: the outer diameter of the crossbeam assembly 120 is less than 370mm, such as 370mm, 330mm, 290mm, 250mm, 210mm or 174mm, etc., and the inner diameter of the crossbeam assembly 120 is less than 340mm, such as 300mm, 260mm, 220mm, 180mm or 154mm, etc. The diameter of the crossbeam assembly 120 in the two specifications of the aforementioned substation frame 100 is significantly smaller than that of the crossbeam assembly 120 without auxiliary support 170, thereby reducing the cost of the crossbeam assembly 120. Apart from the two specifications of the aforementioned substation frame 100, the diameter of the crossbeam assembly 120 in other specifications of the substation frame 100 is significantly reduced after the auxiliary support 170 is installed, thus significantly reducing the cost of the crossbeam assembly 120.

[0036] like Figure 1 and Figure 3As shown, the crossbeam assembly 120 between the auxiliary support 170 and the support assembly 110 adjacent to its first side includes two crossbeam segments 121, which are connected by flanges. The substation frame 100 also includes a first hanging plate 141, which is disposed at the flange between the two crossbeam segments 121. The first hanging plate 141 has several hanging holes 144 for hanging wires 200.

[0037] Specifically, the adjacent ends of the two crossbeam segments 121 are respectively connected to a first flange 1211, and a first hanging plate 141 is sandwiched between the two first flanges 1211. The first hanging plate 141 has two hanging holes 144 and a reserved hole. The reserved hole is located directly below the crossbeam assembly 120, and the two hanging holes 144 are symmetrically arranged on both sides of the reserved hole. In other embodiments, the crossbeam assembly 120 between the auxiliary support member 170 and the support assembly 110 adjacent to its first side includes three, four, or more crossbeam segments 121, which is not limited here.

[0038] Furthermore, such as Figure 1 and Figure 4 As shown, the crossbeam assembly 120 and the support assembly 110, as well as the crossbeam assembly 120 and the auxiliary support 170, are all connected by the flange assembly 130. The substation frame 100 also includes a second hanging plate 142, which is located at the connection between the crossbeam assembly 120 and the flange assembly 130. The second hanging plate 142 has several hanging holes 144 for hanging wires.

[0039] Specifically, such as Figure 4 As shown, the flange assembly 130 has a second flange 132 at one end, and the beam assembly 120 has a third flange 123 at one end. The second flange 132 and the third flange 123 are connected by a first fastener (not shown in the figure), and a second hanging plate 142 is sandwiched between the second flange 132 and the third flange 123. The second hanging plate 142 has two hanging holes 144 and one reserved hole. The reserved hole is located directly below the beam assembly 120, and the two hanging holes 144 are symmetrically arranged on both sides of the reserved hole.

[0040] In another embodiment, the beam assembly 120 may not be segmented, meaning the beam assembly 120 is a long strip-shaped composite post insulator. For example... Figure 5As shown, the substation frame 100 includes a clamp 122 and a third hanging plate 143. The clamp 122 is spaced on the crossbeam assembly 120. The third hanging plate 143 is disposed on the outer wall of the clamp 122. The third hanging plate 143 has several hanging holes 144 for hanging wires. The clamp 122 can be glued to the crossbeam assembly 120. The inner wall of the clamp 122 has several spaced first slots 1221 and several spaced second slots 1222. The first slots 1221 are arranged around the outer wall of the crossbeam assembly 120, and the second slots 1222 are staggered with the first slots 1221. Thus, the first slots 1221 and the second slots 1222 work together to restrict the axial sliding and radial rotation of the clamp 122 on the crossbeam assembly 120, and maintain the stable connection between the clamp 122 and the crossbeam assembly 120. At the same time, the staggered arrangement of the first slots 1221 and the second slots 1222 allows the adhesive material to flow fully and evenly in the first slots 1221 and the second slots 1222 when filling, which is conducive to the glue bonding between the clamp 122 and the crossbeam assembly 120.

[0041] Specifically, such as Figure 5 As shown, the third hanging plate 143 is integrally formed with the clamp 122. The first slot 1221 and the second slot 1222 on the inner wall of the clamp 122 are set vertically. The third hanging plate 143 has two hanging holes 144 and a reserved hole. The reserved hole is located directly below the crossbeam assembly 120. The two hanging holes 144 are symmetrically arranged on both sides of the reserved hole.

[0042] Of course, in other implementations, multiple crossbeam segments 121 can be spliced ​​together and combined with clamps 122. For example, the crossbeam assembly 120 includes a long crossbeam segment 121 and a short crossbeam segment 121. The long crossbeam segment 121 and the short crossbeam segment 121 are spliced ​​together by flanges, and a first hanging plate 141 is provided at the flange. A clamp 122 is fitted on the long crossbeam segment 121. The specific implementation method can be selected according to the actual situation, and there is no limitation here.

[0043] like Figure 3As shown, the hanging holes 144 of each hanging plate are used to connect with the hanging hardware 210, and the wire 200 is hung in the hanging hole 144 through the hanging hardware 210. Normally, the hanging holes 144 on the hanging plate for hanging the hanging hardware 210 are circular. However, considering that the hanging hardware 210 may rotate at a certain angle under external force, after the hanging hardware 210 rotates, the direction of the force between the hanging hardware 210 and each hanging plate cannot intersect with the center line of each hanging plate. That is, a torque is generated on each hanging plate. This force can cause the connection to loosen or even reduce the support life. To ensure that the direction of the force between the hanging hardware 210 and each hanging plate remains intersecting the center line of each hanging plate after the hanging hardware 210 rotates, this application sets at least one hanging hole 144 on each hanging plate as an oblong or arc-shaped hole. After the hanging hardware 210 rotates, it automatically moves within the hanging hole 144, so that the direction of the force exerted by the hanging hardware 210 on each hanging plate remains intersecting the center line of each hanging plate, thereby maintaining the connection stability of each hanging plate, enhancing the stability of the substation frame 100, and extending its service life.

[0044] To ensure the mechanical stability of the substation frame 100, the center line of each hanging plate coincides with the center line of the crossbeam assembly 120. Therefore, the hanging hole 144 is set as an oblong hole or an arc-shaped hole, which ensures that the direction of the force exerted by the hanging hardware 210 on the crossbeam assembly 120 is intersected with the center line of the crossbeam assembly 120.

[0045] The flange assembly 130, located between the support assembly 110 and the beam assembly 120, has many irregular contours and is close to the first hanging plate 141, making it prone to abnormal discharge near a strong electric field. For example... Figure 1 As shown, the substation frame 100 also includes a shielding shell 131, which covers the outside of the flange assembly 130 to prevent abnormal discharge.

[0046] In addition, such as Figure 6 As shown, on the side of the second hanging plate 142 away from the flange assembly 130, an equalizing ring 160 is also provided on the crossbeam assembly 120. The equalizing ring 160 can evenly distribute the high voltage around it, ensuring that there is no potential difference between the various parts of the ring, thereby achieving the effect of equalizing voltage and preventing abnormal discharge.

[0047] Furthermore, at least one side of the first hanging plate 141 is also provided with an equalizing ring 160 to uniformly distribute the electric field and prevent discharge. Preferably, both sides of the first hanging plate 141 are provided with equalizing rings 160.

[0048] Similarly, at least one side of the third hanging plate 143 is also provided with an equalizing ring (not shown in the figure) to uniformize the electric field and prevent discharge. Preferably, equalizing rings are provided on both sides of the third hanging plate 143.

[0049] In one embodiment, such as Figure 1 and Figure 4 As shown, the crossbeam assembly 120 gradually rises upwards in a direction away from the side support assemblies 110 to form an arched crossbeam assembly 120, allowing the substation frame 100 to use its own arched structure to counteract vertical sag and reduce safety hazards. The flange assembly 130 includes a cylinder 133, the axis of which is inclined upwards and forms an acute angle with the horizontal plane, thus ensuring that the cylinder 133 has an upward pre-arching tendency after installation. When the flange assembly 130 is connected to the crossbeam assembly 120, a linked pre-arching angle can be generated, so that the crossbeam assembly 120 can gradually rise upwards in a direction away from the side support assemblies 110 to form an arched crossbeam assembly 120.

[0050] In one embodiment, such as Figure 1 and Figure 2 As shown, each support assembly 110 includes two main support columns 113, each main support column 113 including a first support portion 111 and a second support portion 112, the first support portion 111 being made of composite insulating material. The two main support columns 113 are respectively connected to the flange assembly 130, the plane containing the axes of the two main support columns 113 is perpendicular to the first direction, and the two main support columns 113 form an included angle of 5°-70°.

[0051] Furthermore, such as Figure 2 As shown, of the two support assemblies 110 located on both sides, at least one of the support assemblies 110 further includes an inclined support column 114. The inclined support column 114 is connected to the flange assembly 130 and includes a first support portion 111 and a second support portion 112. The first support portion 111 is made of composite insulating material. The inclined support column 114 is located outside the plane of the two main support columns 113 to limit the offset of the substation frame 100 along the first direction. It should be noted that the inclined support column 114 is positioned away from the beam assembly 120.

[0052] The substation frame 100 requires grounding, especially the row substation frame 100. When the crossbeam assembly 120 is made of composite insulation material and can be directly connected to conductors, the proper placement of the grounding wire is crucial, as it must maintain a sufficient electrical safety distance from the conductors and also address lightning protection issues. Figure 1As shown, in one embodiment, the substation frame 100 further includes wiring posts 150, which are correspondingly arranged with the support assembly 110. The wiring posts 150 are made of composite insulating material and include a first end 151 disposed on the support assembly 110 and a second end 152 opposite to the first end 151. The height of the second end 152 is higher than the height of the crossbeam assembly 120. The second end 152 of the wiring post 150 is used to hang the grounding wire. The second ends 152 of each wiring post 150 are electrically connected to each other. By setting the wiring posts 150, and because the second end 152 of the wiring posts 150 is higher than the height of the crossbeam assembly 120, the second end 152 of the wiring posts 150 is higher than the height of the conductor, which can ensure the electrical safety distance between the ground wire and the conductor, and also play a role in lightning protection. Since both the wiring post 150 and the first support part 111 are made of insulating material, the ground wire needs to be connected to the grounding down conductor 153 to complete the grounding. Because the installation process of connecting the grounding down conductor 153 to the wiring post 150 is relatively complex, after electrically connecting the second ends 152 of all the wiring posts 150, it is only necessary to connect the grounding down conductor 153 along one of the wiring posts 150 to the grounding point to achieve overall grounding of the substation structure 100, making the installation process convenient. Of course, in other embodiments, the grounding down conductor 153 can also be connected to the grounding point along multiple or all of the wiring posts 150; this is not a limitation.

[0053] To ensure a stable connection between the wiring post 150 and the beam assembly 120, the direction of the wiring post 150 is aligned with the axis of the support assembly 110, meaning the wiring post 150 is vertically mounted on the beam assembly 120, and the axial direction of the wiring post 150 is consistent with its gravitational direction. The wiring post 150 can be stably mounted on the support assembly 110. Specifically, the wiring post 150 is mounted on the flange assembly 130 between the support assembly 110 and the beam assembly 120.

[0054] When the electrical safety distance between the first end 151 of the wiring post and the hanging point of the wire on the crossbeam assembly 120 is sufficient, the grounding down conductor 153 can be set to fit against the wiring post 150.

[0055] In one embodiment, when the substation frame 100 is a row substation frame 100, three or a multiple of three connection points for connecting wires are provided between two adjacent support components 110, such as three, six, or nine. The three adjacent connection points are respectively connected to phases A, B, and C, and sufficient intra-phase electrical safety distances must be maintained between phases A, B, and C. It should be noted that, to ensure electrical safety distances between adjacent connection points, when the substation frame 100 is a row substation frame 100, no connection point is provided at the connection between the flange assembly 130 in the middle position and the crossbeam assemblies 120 on both sides, or a connection point is provided only on one side.

[0056] In addition, the two nearest hanging points on both sides of the support component 110 located in the middle position must meet the phase-to-phase safe electrical distance of the conductors connected to the substation frame 100.

[0057] It should be noted that when the distance between the conductor connected to the nearest hanging point of the support component 110 and the support component 110 does not meet the safe electrical distance between the grounding down conductor 153 and the conductor, an additional support structure is required to ensure the safe electrical distance between the grounding down conductor 153 and the conductor connected to the hanging point. The distance between the grounding down conductor 153 and the conductor must be greater than the first preset value.

[0058] Specifically, a post insulator (not shown in the figure) is provided at the connection end between the wiring post 150 and the support assembly 110. The post insulator includes a near end and a far end opposite to the near end of the support assembly 110. The distance between the far end and the conductor is greater than a first preset value. The grounding down conductor 153 is connected from the second end 152 of the wiring post 150 to the far end and then led down to the ground, thereby ensuring a safe electrical distance between the grounding down conductor 153 and the conductor connected to the connection point.

[0059] In summary, by using a composite insulating material for the first support 111 connected to the crossbeam assembly 120, which has excellent electrical insulation performance, the electrical safety distance between the conductor and the support assembly 110 can be reduced, thereby effectively reducing the width of the substation frame 100 and land acquisition costs. Meanwhile, the use of a metal material for the second support 112 further reduces costs. Furthermore, the crossbeam assembly 120, being a composite insulating material, possesses excellent electrical insulation performance and can directly connect conductors without the need for suspension insulators. Since the conductor's height above ground is constant, eliminating suspension insulators reduces the overall height of the substation frame 100, decreasing the material usage of suspension insulators and the support assembly 110. Moreover, eliminating tension insulator strings, suspension insulator strings, and jumpers also eliminates potential wind-induced discharge problems in the substation frame 100. The substation frame 100 using composite insulating materials is lightweight, resistant to rust and cracking, has high transportation and installation efficiency, and can achieve maintenance-free operation throughout its entire lifecycle, reducing the maintenance costs of the original porcelain insulator strings.

[0060] In addition, by placing the auxiliary support 170 between two adjacent support components 110 and using it to support the crossbeam assembly 120, the diameter of the crossbeam assembly 120 with the auxiliary support 170 can be set below the first diameter when the distance between the two support components 110 is constant, which is smaller than the diameter of the crossbeam assembly 120 without the auxiliary support 170. This significantly reduces the cost of the crossbeam assembly 120. The overall cost of the substation frame 100 is reduced, demonstrating the advantages of composite insulation materials.

[0061] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or principle transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A power transformer framework, characterized by The utility model relates to a substation framework, including: Supporting assembly is arranged at interval along first direction at least two, supporting assembly includes mutual connection first support part and second support part, first support part is composite insulating material, second support part is metal material; Crossbeam assembly is erected between two adjacent supporting assemblies, crossbeam assembly is composite insulating material, the diameter length of crossbeam assembly is below first diameter length, first support part is located between crossbeam assembly and second support part; Auxiliary support is arranged between two adjacent supporting assemblies and supports crossbeam assembly, auxiliary support includes mutual connection first support and second support, first support is located between crossbeam assembly and second support, first support is composite insulating material, second support is metal material; Three wire hanging points for hanging wire are arranged between auxiliary support and the supporting assembly adjacent to the first side of auxiliary support; Crossbeam assembly and auxiliary support are connected through flange assembly, and the substation framework includes: Second wire hanging plate is arranged at the connection between crossbeam assembly and flange assembly, and is used for hanging wire; Hoop is arranged on crossbeam assembly at interval, and the inner wall of hoop is provided with first slot and second slot arranged at interval, first slot is arranged around the outer wall of crossbeam assembly, second slot is arranged staggered with first slot, and first slot and second slot are also used for filling adhesive material; Third wire hanging plate is integrally formed on the outer wall of hoop, and is used for hanging wire; The crossbeam assembly between auxiliary support and the supporting assembly adjacent to the first side of auxiliary support includes two crossbeam sections, and the adjacent two crossbeam sections are connected through flange, and the substation framework includes: First wire hanging plate is arranged at the flange between the adjacent two crossbeam sections, and is used for hanging wire; Wiring column is arranged corresponding to supporting assembly and / or auxiliary support, and includes first end arranged on supporting assembly and / or auxiliary support and second end opposite to first end, the height of second end is higher than the height of crossbeam assembly, the second ends of all wiring columns are electrically connected, and at least one wiring column is used for hanging ground wire.

2. The transformer platform of claim 1, wherein, The crossbeam assembly between auxiliary support and the supporting assembly adjacent to the second side of auxiliary support is not used for hanging wire, and the second side is opposite to the first side.

3. The transformer platform of claim 1, wherein, The substation framework is 110kv substation framework, and the diameter length of crossbeam assembly is below first diameter length, including: The outer diameter of crossbeam assembly is below 220mm, and the inner diameter of crossbeam assembly is below 190mm.

4. The transformer platform of claim 1, wherein, The substation framework is 220kv substation framework, and the diameter length of crossbeam assembly is below first diameter length, including: The outer diameter of crossbeam assembly is below 370mm, and the inner diameter of crossbeam assembly is below 340mm.

5. The transformer platform of claim 1, wherein, Including: Voltage equalizing ring is arranged at least one side of wire hanging point.

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