CN211958538U

CN211958538U - Inflatable plug-in type conductor connection terminal and transformer substation

Info

Publication number: CN211958538U
Application number: CN202020696162.4U
Authority: CN
Inventors: 刘静; 杜炬虎; 张希; 闫冬
Original assignee: Huadian Distributed Energy Engineering & Technology Co ltd; China Huadian Engineering Group Co Ltd
Current assignee: Huadian Distributed Energy Engineering & Technology Co ltd; China Huadian Engineering Group Co Ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-11-17
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses an inflatable grafting type conductor connection terminal and transformer substation, inflatable grafting type conductor connection terminal include the inflatable body that links to each other with the generating line sleeve pipe of GIS equipment, it is gaseous that the holding has the SF6 who encircles branch's generating line in the inflatable body, the inflatable body is equipped with three one end with three branch's generating line respectively and links to each other and certainly binding post that stretches out below the inflatable body, three branch's generating line's the other end certainly GIS equipment stretches out. By the design, the technical problems that GIS equipment adopting a wiring mode of a composite insulating sleeve has large requirements on equipment space and large occupied area are solved, and the transformer station has the advantages of small occupied space and capability of being utilized in a transformer station of a distributed energy station project with shortage of land resources.

Description

Inflatable plug-in type conductor connection terminal and transformer substation

Technical Field

The utility model relates to a power transmission and distribution technical field, concretely relates to inflatable grafting type conductor connection terminal and transformer substation.

Background

At present, GIS power distribution devices and other equipment level conductors such as transformers, outgoing line conductors and the like mostly adopt composite insulated sleeve type GIS terminals. The wiring terminal is widely applied to outdoor substations, and as shown in fig. 1, a GIS device 100 'is connected with an overhead line 200' and a transformer 300 'by using a steel-reinforced aluminum stranded wire 400'.

As shown in fig. 2 and fig. 3, in the prior art, a bus bushing 500 ' is connected to a metal casing of the GIS device 100 ', the bus bushing 500 ' is connected to three insulation bushings 600 ' respectively sleeved outside an a-phase bus, a B-phase bus, and a C-phase bus, and in order to increase an inter-phase distance between the three-phase buses, the three insulation bushings 600 ' need to be arranged away from each other.

However, the wiring mode that the three insulating sleeves are far away from each other has a large requirement on the distance between the devices, and the whole occupied area of the devices is large, which is not in accordance with the current national policy of fully utilizing land resources. Particularly, for a distributed energy station project, the distributed energy station project is generally built in an industrial park or a commercial center, land resources are in short supply, and a traditional composite insulating sleeve type GIS terminal cannot be utilized in a booster station of the distributed energy station project.

Therefore, a need exists for a safe and reliable conductor connection terminal with a small floor space to solve the problem of connection between a GIS device and other devices, especially a transformer.

SUMMERY OF THE UTILITY MODEL

In view of this, the to-be-solved technical problem of the utility model lies in overcoming among the prior art the mode that adopts compound insulating bushing type connection between GIS equipment and the potentiometre or other electrical equipment, has the defect that occupation space is big to an inflatable grafting type conductor connection terminal and transformer substation are provided.

In order to solve the technical problem, the technical scheme of the utility model as follows:

the inflatable plug-in type conductor connecting terminal comprises an inflatable pipe body connected with a bus sleeve of GIS equipment, wherein SF6 gas surrounding branch buses is contained in the inflatable pipe body, the inflatable pipe body is provided with three connecting terminals which are respectively connected with one ends of the three branch buses and extend out from the lower portion of the inflatable pipe body, and the other ends of the three branch buses extend out of the GIS equipment.

Furthermore, the inflatable tube body is T-shaped and comprises a transverse tube body and a longitudinal tube body, wherein one end of the transverse tube body is hermetically connected with a bus sleeve of the GIS equipment, the longitudinal tube body is communicated with the other end of the transverse tube body, and the extending direction of the longitudinal tube body is vertical to the extending direction of the transverse tube body; the three wiring terminals extend out of the lower end of the longitudinal pipe body.

Furthermore, the transverse pipe body is matched with a bus sleeve of the GIS device in an inserting mode.

Furthermore, two of the three binding post are located respectively at the both ends of vertical body length direction, and another binding post is located two of tip binding post positive centre.

Further, the wiring terminal is connected with the transformer equipment through a soft copper bar.

Furthermore, a transformer chamber for placing the transformer equipment is arranged outside the transformer equipment, and a bus sleeve of the GIS equipment extends into the transformer chamber.

Furthermore, three wiring terminals of the inflatable tube body and three insulation sleeve terminals on the transformer equipment are arranged in a one-to-one correspondence mode.

A transformer substation comprises GIS equipment, transformer equipment and the inflatable plug-in type conductor connection terminal connected between the GIS equipment and the transformer equipment.

The utility model discloses technical scheme has following advantage:

1. the utility model provides an inflatable plug-in type conductor connection terminal adopts inflatable body and GIS equipment's generating line sleeve pipe to link to each other, and the inflatable body internal content has the SF6 gas of surrounding branch's generating line, because SF6 has good insulating properties, can greatly reduce the safe interval between the branch's generating line; and the inflatable tube body occupies small space, so that the occupied space of a conductor connecting terminal between GIS equipment and transformer equipment can be greatly reduced, and the GIS equipment can be utilized in a transformation station of a distributed energy station.

2. The utility model provides an inflatable plug-in type conductor connection terminal, inflatable body adopt the mode of pegging graft to be connected with the generating line sleeve pipe of GIS equipment, have easily installation, dismantle convenient advantage.

3. The utility model provides an inflatable plug-in type conductor connection terminal, binding post stretch out from under the inflatable body, and the mode that soft copper bar of rethread is connected with transformer equipment can reduce the occupation of land space of the transformer substation of compriseing GIS equipment and transformer equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of an overall structure of a distribution device formed by connecting a GIS device with a transformer through an overhead line in the prior art;

FIG. 2 is a top view of a GIS device and a composite bushing of the prior art;

FIG. 3 is a front view of a GIS device and composite insulating sleeve of the prior art;

fig. 4 is a schematic structural view of the connection between the GIS device and the transformer device via the inflatable plug-in type conductor connection terminal according to the embodiment of the present invention;

fig. 5 is a top view of an air-filled jack type conductor connection terminal in accordance with an embodiment of the present invention.

Description of reference numerals: 100', a GIS device; 200', overhead lines; 300', a transformer; 400' steel-cored aluminum stranded wires; 500', a bus bar bushing; 600' and an insulating sleeve;

10. a GIS device; 20. a bus bushing; 30. an inflatable tube body; 31. a wiring terminal; 32. a transverse tube body; 33. a longitudinal tube body; 40. a transformer device; 50. soft copper bars; 60. and a transformer chamber.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 4 and 5, the inflatable plug-in type conductor connection terminal includes an inflatable tube 30 connected between a bus bar sleeve 20 of the GIS device 10 and a transformer device 40, wherein SF6 gas surrounding branch bus bars is contained in the inflatable tube 30, and SF6 gas plays a role of interphase insulation between the three branch bus bars. One end of the inflatable tube 30 is provided with three connecting terminals 31 which are respectively connected with the three branch buses and extend out from the lower part of the inflatable tube 30, and the connecting terminals 31 are connected with the transformer equipment 40 through soft copper bars 50. The other ends of the three branch buses are connected with the GIS device 10, so that conductor connection between the GIS device 10 and the transformer device 40 is realized.

The inflatable plug-in type conductor connection terminal is connected with the bus sleeve 20 of the GIS device 10 by the inflatable tube body 30, and SF6 gas surrounding branch buses is contained in the inflatable tube body 30, so that the SF6 has excellent insulating property, and the safety distance between the branch buses can be greatly reduced; moreover, the inflatable tube 30 occupies a small space, so that the occupied space of the conductor connection terminal between the GIS device 10 and the transformer device 40 can be greatly reduced, and the GIS device 10 can be utilized in a transformation station of a distributed energy station.

Specifically, the inflatable tube 30 is T-shaped, and includes a transverse tube 32 with one end hermetically connected to the bus bar sleeve 20 of the GIS device 10, and a longitudinal tube 33 communicated with the other end of the transverse tube 32, wherein the extending direction of the longitudinal tube 33 is perpendicular to the extending direction of the transverse tube 32; three terminals 31 project from the lower end of the longitudinal tubular body 33. In the design of a transformer substation, in order to reduce the occupied space, the bus bar 20 of the GIS device 10 extends into the transformer room 60, the three connection terminals 31 of the inflatable tube body 30 are arranged in the transformer room 60 in one-to-one correspondence with the three insulation sleeve terminals of the transformer device 40, each connection terminal 31 is located right above the insulation sleeve terminal, and two ends of the soft copper bar 50 are respectively welded or bolted to the connection terminals 31 and the insulation sleeve terminals.

Specifically, two terminals 31 of the three terminals 31 are respectively located at two ends of the longitudinal tube 33 in the length direction, and the other terminal 31 is located at the middle of the two terminals 31 at the end. The arrangement of the three terminals 31 at the distance from the longitudinal tube 33 as far as possible can reduce the size of the longitudinal tube 33 as much as possible while ensuring that the insulation space between the three terminals 31 is sufficient. In other embodiments, the longitudinal tube 33 may be replaced by a regular triangle tube formed in a regular triangle, and the three terminals 31 are respectively disposed at three corners of the regular triangle tube.

In a preferred embodiment of this embodiment, the transverse tube 32 is connected to the bus bar sleeve 20 of the GIS device 10 by plugging and sealing with a flange, and the gas-filled tube 30 and the GIS device 10 connected by plugging have the advantages of easy installation and convenient disassembly.

Further, a transformer chamber 60 for placing the transformer device 40 is arranged outside the transformer device 40, and the bus bar 20 of the GIS device 10 extends into the transformer chamber 60. The wiring terminal 31 extends out from the position under the inflatable tube body 30 and is connected with the transformer equipment 40 through the soft copper bar 50, and the connection mode can reduce the occupied space of a transformer substation consisting of the GIS equipment 10 and the transformer equipment 40.

On the other hand, the embodiment of the utility model provides a still provides a transformer substation, including GIS equipment 10, transformer equipment 40 and connect the inflatable plug-in type conductor connection terminal as above between GIS equipment 10 and transformer equipment 40.

To sum up, in the inflatable plug-in type conductor connection terminal and the transformer substation provided by the embodiment of the present invention, the three-phase branch bus adopts an insulation manner of filling SF6 gas in the inflatable duct, so that the inter-phase distance is greatly reduced; the busbar tube 20 can be directly inserted into the transformer room 60 and then connected with the transformer equipment 40 through the inflatable plug-in type conductor connection terminal by using the flexible copper bar 50, so that the occupied space of the GIS equipment 10 and the transformer substation can be reduced.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. An inflatable plug-in type conductor connection terminal is characterized by comprising an inflatable tube body (30) connected with a bus sleeve (20) of GIS equipment (10), wherein SF6 gas surrounding branch buses is contained in the inflatable tube body (30), the inflatable tube body (30) is provided with three wiring terminals (31) which are respectively connected with one ends of the three branch buses and extend out from the lower side of the inflatable tube body (30), and the other ends of the three branch buses extend out of the GIS equipment (10).

2. The inflatable patch-type conductor connection terminal according to claim 1, wherein the inflatable tube (30) is T-shaped and comprises a transverse tube (32) having one end hermetically connected to the busbar tube (20) of the GIS device (10) and a longitudinal tube (33) connected to the other end of the transverse tube (32), and the longitudinal tube (33) extends in a direction perpendicular to the transverse tube (32); the three wiring terminals (31) extend out of the lower end of the longitudinal pipe body (33).

3. The inflatable plug-type conductor connection terminal of claim 2, wherein the transverse tube (32) is plug-fit to a busbar casing (20) of the GIS device (10).

4. The gas-filled patch type conductor connection terminal according to claim 2, wherein two terminals (31) of the three terminals (31) are located at both ends of the longitudinal tube (33) in the longitudinal direction, and the other terminal (31) is located at the center of the two terminals (31) at the end.

5. The inflatable patch type conductor connection terminal of claim 1, wherein the connection terminal (31) is connected to the transformer device (40) by a soft copper bar (50).

6. The inflatable patch type conductor connection terminal of claim 5, wherein the transformer device (40) is externally provided with a transformer chamber (60) for placing the transformer device (40), and the bus bar bushing (20) of the GIS device (10) is inserted into the transformer chamber (60).

7. The inflatable patch type conductor connection terminal of claim 5, wherein the three connection terminals (31) of the inflatable body (30) are arranged in one-to-one correspondence with three insulation sleeve terminals on the transformer device (40).

8. A substation, characterized in that it comprises a GIS device (10), a transformer device (40), and a gas-filled patch type conductor connection terminal according to any one of claims 1-7 connected between the GIS device (10) and the transformer device (40).