AU2013395206A1

AU2013395206A1 - A preassembled transformer substation

Info

Publication number: AU2013395206A1
Application number: AU2013395206A
Authority: AU
Inventors: Lu LIN; Jin Lou LIU; Ivan PEDERSEN; Liang Wang; Yao Ming Wang
Original assignee: ABB Technology AG
Current assignee: ABB Schweiz AG
Priority date: 2013-07-26
Filing date: 2013-11-28
Publication date: 2016-02-11
Anticipated expiration: 2033-11-28
Also published as: CN203415883U; AU2013395206B2; CN105518812B; WO2015010708A1; EP3025359B1; CN105518812A; EP3025359A1

Abstract

The invention relates to a preassembled transformer substation, according to the preamble of claim 1. In order to provide a preassembled transformer substation, resistant in corrosion, electrically insulating against the environment and simple and fast in installing, the invention is, that the aforesaid substation comprises a plurality of strip-shaped assembling modules (1), a plurality of wall corner modules (2), connectors (3) located between the assembling modules (1) and the wall corner modules (2), and a ridge (4), and wall and door bodies (10, 20), and a roof (30), which are made of pultrusion profiles of insulating material, such as plastic or glasfiber reinforced material, in order to result in a completely electrically insulating housing of the substation.

Description

WO 2015/010708 PCT/EP2013/003602 5 A preassembled transformer substation FIELD OF THE INVENTION 10 The present invention relates to the field of electric power products, and specifically to a preassembled transformer substation used in the transmission and distribution system. BACKGROUND OF THE INVENTION Nowadays, the traditional preassembled box-type transformer substation uses an 15 outer case material mainly including metal plate material and cement plate material. The outer case box of metal material can be made quickly, but is vulnerable to corrosion, and has a relatively high dependency on the environment and a poor capability of insulation for sound and heat; while the outer case box of cement of the preassembled transformer substation has a strong capability of corrosion resistance, 20 but needs a long time to be made and installed and is relatively difficult for offsite assembly. So such boxes or enclosures are made of concrete or steel, or combinations of both. Furthermore it has to be considered, that steel as well as concrete are electric conductors. One further problem is, that steel or concrete can cause condensation of 25 humity at the cold side of the wall. SUMMARY OF THE INVENTION The objective of the present invention is to overcome the defect of the prior art and provide a preassembled transformer substation, resistant in corrosion, electrically insulating against the environment and simple and fast in installing. 30 WO 2015/010708 PCT/EP2013/003602 -2 According to that the invention is, that a preassembled transformer substation, is characterized in that it comprises a plurality of strip-shaped assembling modules, a plurality of wall corner modules, connectors located between the assembling modules and the wall corner modules, and wall and door bodies, and a top rail, and a roof, and a 5 ridge, which are made of pultrusion profiles of insulating material, such as plastic or glasfiber reinforced material, in order to result in a completely electrically insulating housing of the substation. This results in that the substation is corrosion proof. But also lots of effects are resulted in common with that: The use of pultrusion technique for the manufacture of the elements of the 10 substation is for obtaining electrical insulation behavior, for a better dielectric behavior and to enlarge the creepage distances. Preferably the substation is made of glass fiber reinforced Polyester, so called GRP). The enclosure of the substation so fulfills ingress protection degree IP 54; and that for the use of station for medium- and high-voltage application. 15 According to the preferred embodiment, a preassembled transformer substation is provided. It comprises a plurality of strip-shaped assembling modules, a plurality of wall corner modules, connectors located between the assembling modules and between the assembling modules and the wall corner modules, and a ridge; According to the preferred embodiment, the assembling modules are arranged 20 longitudinally, and form, together with the wall corner modules and the connectors, a wall body and a door body of the preassembled transformer substation; According to the preferred embodiment, the assembling modules are arranged transversely, and form, together with the ridge and the connectors, a roof of the preassembled transformer substation, wherein the ridge is located at a center of the 25 roof, and the assembling module has one end connected with the ridge and the other end inclined downward; According to the preferred embodiment, each of the assembling module, the wall corner module, the connector and the ridge is a glass fiber reinforced plastic module.

WO 2015/010708 PCT/EP2013/003602 -3 Preferably, the assembling module and the wall corner module have a hollow bilayer structure formed by die drawing. Preferably, the connector has a transverse section of I shape. Preferably, an edge banding is coated on a bottom side of the wall body and an 5 outer edge of the roof. Preferably, the edge banding on the bottom side of the wall body is connected, via a base wall body metal connector, with a base longitudinal beam. Preferably, the roof and the wall body are connected by a ridge support metal part, a roof wall body metal connector and a top rail; 10 According to the preferred embodiment, the ridge support metal part is arranged horizontally in a direction along the length of the assembling modules of the roof, the top rail is arranged horizontally in a direction perpendicular to the ridge support metal part, the roof wall body metal connector connects the ridge support metal part and the top rail; 15 The top rail is a glass fiber reinforced plastic module. Preferably, the ridge support metal part is installed below the ridge. Preferably, a seal strip is provided between the door body and the wall body and between the door body and the roof, and a top seal part is provided between the roof and the door body, the seal strip is inserted to the top seal part. 20 Preferably, the preassembled transformer substation has a transformer chamber in the middle and has a high voltage chamber and a low voltage chamber at its two ends, respectively; the high voltage chamber is connected by a cable or a copper busbar with a high voltage terminal of a transformer, and the low voltage chamber is connected by a cable or a copper busbar with a low voltage terminal of a transformer. 25 Preferably, a heat dissipation window is provided on a door of the transformer chamber and on the wall body, and the heat dissipation window comprises a plurality of L-shaped blades spaced apart with one another.

WO 2015/010708 PCT/EP2013/003602 -4 In a further advantageous embodiment, the wall bodies and the roof and the door bodies are made in double layer insulating material with approximately 40 millimeter air distance between each layer, in order to enhance electrical insulation. 5 In a further advantageous embodiment, the substation is provided with at least one door, and that the door body is fixed at a wall body with hinges in such, that the fixation flanges of the hinges are arranged in parallel and inside an espace between the egde of the door body and the edge of the wall body, where the hinge is fixed, in order to 10 prevent extension of edges of metallic material into the inner room of the substation, and to enlarge creepage distances. Furthermore advantageous is that a seal strip is located between the wall body and a door hinge on the side of the door body . 15 Additionally is disclosed a seal strip which is provided between the door body and the wall body and between the door body and the roof, and a top seal part is provided between the roof and the door body , the seal strip is inserted to the top seal part. 20 An optimal use of such a preassembled transformer substation is, for the use for medium- or high voltage switchgears or power stations or transformers. With the above technical solutions, the following beneficial effects can be achieved: as the assembling module and the like are glass fiber reinforced plastic modules, the glass fiber reinforced plastic has relatively good corrosion resistant 25 property. Moreover, a modularized design is used to facilitate a fast installing. BRIEF DESCRIPTION OF THE DRAWINGS The subject matter of the Invention will be explained in more details in the following description with reference to preferred exemplary embodiments which are illustrated in the drawings, in which: WO 2015/010708 PCT/EP2013/003602 -5 Figure 1 is a structural diagram of a preassembled transformer substation in an embodiment. Figure 2 is a partial section view of a wall body in an embodiment. Figure 3 is a section view of an assembling module in an embodiment of the. 5 Figure 4 is a section view of a wall corner module in an embodiment. Figure 5 is a section view of a connector in an embodiment. Figure 6 is a section view of a ridge in an embodiment. Figure 7 is a partial structural diagram of a bottom of the wall body in an embodiment. 10 Figure 8 is a partial structural diagram of a structure between the wall body and the roof in an embodiment. Figure 9 is a section view of an edge banding in an embodiment. Figure 10 is a section view of a top rail in an embodiment. Figure 11 is a partial structural diagram of a roof in an embodiment. 15 Figure 12 is a transverse partial cutaway view of a structure between the door body and the wall body in an embodiment. Figure 13 is a longitudinal partial cutaway view of a structure between the door body and the roof in an embodiment. Figure 14 is a section view of a seal strip in an embodiment. 20 Figure 15 is a section view of a top seal part in an embodiment. Figure 16 is a transverse cutaway view of the preassembled transformer substation in an embodiment. Figure 17 is a side view of a heat dissipation window in an embodiment.

WO 2015/010708 PCT/EP2013/003602 -6 Checking list for the reference numerals: 1--assembling module 2--wall corner module 5 3-connector 4-ridge 5--edge banding 6-top rail 7--seal strip 10 8--top seal part 9--heat dissipation window 10--wall body 20--door body 30-roof 15 40--transformer chamber 50--high voltage chamber 60--low voltage chamber 70-transformer 11--bottom side 20 12--base wall body metal connector 13--base longitudinal beam 21--door hinge 31--outer edge 32--ridge support metal part 25 33--roof wall body metal connector 91--blade WO 2015/010708 PCT/EP2013/003602 -7 DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS Exemplary embodiments of the invention are described in conjunction with the accompanying drawings hereinafter. For the sake of clarity and conciseness, not all the features of actual implementations are described in the specification. 5 As shown in figure 1, a preassembled transformer substation comprises a plurality of strip-shaped assembling modules 1, a plurality of wall corner modules 2, connectors 3 which are located between the assembling modules 1 and the wall corner modules 2 (see figure 2), and a ridge 4; the assembling modules 1 are arranged longitudinally, and form, together with the wall corner modules 2 and the connectors 3, a wall body 10 10 and a door body 20 of the preassembled transformer substation; the assembling modules 1 are arranged transversely, and form, together with the ridge 4 and the connectors 3, a roof 30 of the preassembled transformer substation, wherein the ridge 4 is located at a center of the roof 30, and the assembling module 1 has one end connected with the ridge 4 and the other end inclined downward; each of the 15 assembling module 1, the wall corner module 2, the connector 3 and the ridge 4 is a glass fiber reinforced plastic module. The assembling modules 1 forming the wall body 10 and the door body 20 and the assembling modules 1 supporting the roof 30 are made of the same material, wherein the wall body 10, the door body 20 and the roof 30 have the same die section, but are 20 different in length only. Between the adjacent assembling modules 1, and between the assembling module 1 and the wall corner module 2 are inserted for securing by the connector 3, without need of rivets or screws, thus facilitating instalment. As the glass fiber reinforced plastic has relatively good corrosion resistant property, the inventive transformer substation has a strong capability of corrosion resistance. 25 Preferably, as shown in figures 2-4, the assembling module 1 and the wall corner module 2 have a hollow bilayer structure formed by die drawing. The hollow bilayer structure has excellent capability of insulation for sound and heat. As shown in figure 5, the connector 3 has a transverse section of I shape, both ends of the assembling module 1 and the wall corner module 2 can be inserted into two sides of the connector 30 3 and form an interference fit, thus functioning for secure connection.

WO 2015/010708 PCT/EP2013/003602 -8 As shown in figure 6, the shape of the ridge 4 is similar to that of the connector 3, but two sides of the ridge 4 incline downward. When the assembling module 1 is inserted into the ridge 4, a roof 30 high in the middle and low on two sides is formed. Preferably, as shown in figures 7-8, an edge banding 5 is coated on a bottom side 5 11 of the wall body 10 and an outer edge 31 of the roof 30. The edge banding 5 functions for improving support and water proofing. As shown in figures 7 and 9, the edge banding 5 on the bottom side 11 of the wall body 10 is connected, via a base wall body metal connector 12, with a base longitudinal beam 13. The base wall body metal connector 12 and the base longitudinal beam 13 function for securely supporting the 10 whole preassembled transformer substation. Preferably, as shown in figures 8 and 10, the roof 30 and the wall body 10 are connected by a ridge support metal part 32, a roof wall body metal connector 33 and a top rail 6; the ridge support metal part 32 is arranged horizontally in a direction along the length of the assembling modules 1 of the roof 30, the top rail 6 is arranged 15 horizontally in a direction perpendicular to the ridge support metal part 32, the roof wall body metal connector 33 connects the ridge support metal part 32 and the top rail 6; the top rail 6 is a glass fiber reinforced plastic module. The roof wall body metal connector 33 comprises two portions, one portion is connected with the ridge support metal part 32 and the other portion is connected with the assembling modules 1 20 forming the wall body, and the assembling module 1 is further connected with the top rail 6. Preferably, as shown in figure 11, the ridge support metal part 32 is installed below the ridge 4. The ridge support metal part 32 functions for supporting the ridge 4. Preferably, as shown in figures 12-15, a seal strip 7 is provided between the door 25 body 20 and the wall body 10 and between the door body 20 and the roof 30, and a top seal part 8 is provided between the roof 30 and the door body 20, the seal strip 7 is inserted to the top seal part 8. In figure 12, the seal strip 7 is located between the wall body 10 and a door hinge 21 on the side of the door body 20. In figure 13, the seal strip 7 is located between the top seal part 8 and the top of the door body 20. The seal strip 30 and the top seal part can function for better protection.

WO 2015/010708 PCT/EP2013/003602 -9 Preferably, as shown in figure 16, the preassembled transformer substation has a transverse section of shape, with a transformer chamber 40 in the middle and a high voltage chamber 50 and a low voltage chamber 60 at its two ends, respectively; the high voltage chamber 50 is connected by a cable or a copper busbar with a high 5 voltage terminal of a transformer 70, and the low voltage chamber 60 is connected by a cable or a copper busbar with a low voltage terminal of a transformer 70. The preassembled transformer substation has in its interior a grounding copper busbar which generally connects various grounding points. Preferably, as shown in figure 1 and 17, a heat dissipation window 9 is provided on 10 a door of the transformer chamber 40 and on the wall body 10, and the heat dissipation window 9 comprises a plurality of L-shaped blades 91 spaced apart with one another. The preassembled transformer substation in the present invention can satisfy the requirements on distribution and transformation with a rated capacity in most areas, resistant to corrosion, simple and fast in installing, excellent in insulating property, light 15 in weight, beautiful in appearance, and convenient for capacity regulation with its modularized design. Though the present Invention has been described on the basis of some preferred embodiments, those skilled in the art should appreciate that those embodiments should by no means limit the scope of the present invention. Without departing from the spirit 20 and concept of the present invention, any variations and modifications to the embodiments should be within the apprehension of those with ordinary knowledge and skills in the art, and therefore fall in the scope of the present invention which is defined by the accompanied claims.

Claims

1. A preassembled transformer substation, characterized in that it comprises a plurality of strip-shaped assembling modules (1), a 5 plurality of wall corner modules (2), connectors (3) located between the assembling modules (1) and the wall corner modules (2), and wall and door bodies (10, 20), and a top rail (6), and a roof ( 30), and a ridge (4), which are made of pultrusion profiles of insulating material, such as plastic or glasfiber reinforced material, in order to result in a completely 10 electrically insulating housing of the substation.

2. A preassembled transformer substation according to claim 1, characterized in that it comprises a plurality of strip-shaped assembling modules (1), a 15 plurality of wall corner modules (2), connectors (3) located between the assembling modules (1) and the wall corner modules (2), and a ridge (4), wherein said assembling modules (1) being arranged longitudinally, and form, together with the wall corner modules (2) and the connectors (3), a wall body (10) and a door body (20) of the preassembled transformer 20 substation, and said assembling modules (1) being arranged transversely, and form, together with the ridge (4) and the connectors (3), a roof (30) of the preassembled transformer substation; the ridge (4) being located at a center of the roof (30), and the assembling module (1) has one end connected with the ridge (4) and the other end being 25 inclined downward, and each of the assembling module (1), the wall corner module (2), the connector (3) and the ridge (4) is a glass fiber reinforced plastic module. WO 2015/010708 PCT/EP2013/003602 - 11

3. A preassembled transformer substation according to claim 1 or 2, characterized in that the assembling module (1) and the wall corner module (2) have a hollow bilayer structure formed by die drawing. 5

4. A preassembled transformer substation according to claim 3, characterized in that the connector (3) has a transverse section of I shape. 10

5. A preassembled transformer substation according to claim 1 or 2, characterized in that an edge banding (5) is coated on a bottom side (11) of the wall body (10) and an outer edge (31) of the roof (30). 15

6. A preassembled transformer substation according to claim 5, characterized in that the edge banding (5) on the bottom side (11) of the wall body (10) is connected, via a base wall body metal connector (12), with a base longitudinal beam (13). 20

7. A preassembled transformer substation according to claim 1 or 2, characterized in that the roof (30) and the wall body (10) are connected by a ridge support metal part (32), a roof wall body metal connector (33) and a top rail (6); 25 the ridge support metal part (32) is arranged horizontally in a direction along the length of the assembling modules (1) of the roof (30), the top rail (6) is arranged horizontally in a direction perpendicular to the ridge support metal part (32), the roof wall body metal connector (33) connects the ridge support metal part (32) and the top rail (6); the top rail (6) is a WO 2015/010708 PCT/EP2013/003602 - 12 glass fiber reinforced plastic module.

8. A preassembled transformer substation according to claim 7, characterized in that 5 the ridge support metal part (32) is installed below the ridge (4).

9. A preassembled transformer substation according to claim 1 or 2, characterized in that a seal strip (7) is provided between the door body (20) and the wall body 10 (10) and between the door body (20) and the roof (30); and a top seal part (8) is provided between the roof (30) and the door body (20); the seal strip (7) is inserted to the top seal part (8).

10.A preassembled transformer substation according to claim 1 or 2, 15 characterized in that the preassembled transformer substation has a transformer chamber (40) in the middle and has a high voltage chamber (50) and a low voltage chamber (60) at its two ends, respectively; the high voltage chamber (50) is connected by a cable or a copper busbar with a high voltage terminal 20 of a transformer (70), and the low voltage chamber (60) is connected by a cable or a copper busbar with a low voltage terminal of a transformer (70).

11.A preassembled transformer substation according to claim 10, 25 characterized in that a heat dissipation window (9) is provided on a door of the transformer chamber (40) and on the wall body (10), and the heat dissipation window (9) comprises a plurality of L-shaped blades (91) spaced apart with one WO 2015/010708 PCT/EP2013/003602 - 13 another.

12.A preassembled transformer substation according to one of the aforesaid claims 1 to 11, 5 characterized in that the wall bodies and the roof and the door bodies are made in double layer insulating material with approximately 40 millimeter air distance between each layer, in order to enhance electrical insulation. 10

13. A preassembled transformer substation according to one of the aforesaid claims 1 to 12, characterized in that the substation is provided with at least one door, and that the door body (10) is fixed at a wall body (20) with hinges (21) in 15 such, that the fixation flanges of the hinges (21) are arranged in parallel and inside an espace between the egde of the door body and the edge of the wall body, where the hinge (21) is fixed, in order to prevent extension of edges of metallic material into the inner room of the substation, and to enlarge creepage distances. 20

14.A preassembled transformer substation according to claim 12, characterized in that a seal strip 7 is located between the wall body (10) and a door hinge (21) on the side of the door body (20). 25

15.A preassembled transformer substation according to one of the aforesaid claims 1 to 13, characterized in that a seal strip (7) is provided between the door body (20) and the wall body WO 2015/010708 PCT/EP2013/003602 - 14 (10) and between the door body (20) and the roof (30), and a top seal part (8) is provided between the roof (30) and the door body (20), the seal strip (7) is inserted to the top seal part (8). 5

16. A preassembled transformer substation according to one of the aforesaid claims 1 to 15, for the use for medium- or high voltage switchgears or power stations or transformers.