CN214227371U

CN214227371U - Main transformer system of transformer substation

Info

Publication number: CN214227371U
Application number: CN202120001646.7U
Authority: CN
Inventors: 朱丽敏; 杨景
Original assignee: Hebei Yuanneng Power Engineering Technology Co ltd
Current assignee: Hebei Yuanneng Power Engineering Technology Co ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-09-17
Anticipated expiration: 2031-01-04

Abstract

The application relates to the field of a power supply system of a transformer substation, in particular to a main transformer system of the transformer substation, which comprises a transformer, a mounting device and a protection component; an input side coil of the transformer is connected with an external high-voltage wire through an input cable, and high-voltage electricity is subjected to voltage reduction through the transformer and then is connected with a bus to be output through an output side coil of the transformer; the telegraph poles are provided with a plurality of telegraph poles for bearing high-voltage wires on the ground; the mounting device is fixedly arranged on the ground, the transformer is fixedly connected with the mounting device, the output cable is sleeved with the protection assembly, and the protection assembly is fixedly connected with the transformer. This application has the effect that reduces open-air animal to the destruction of output cable.

Description

Main transformer system of transformer substation

Technical Field

The application relates to the field of power supply systems of transformer substations, in particular to a main transformer system of a transformer substation.

Background

At present, a common substation system includes a capacity-increasing transformer, and an input side coil of the transformer is connected to an external high-voltage line through an input cable, and is output by an output side coil after being stepped down. However, after the output end coil of the transformer which is usually arranged in the field is connected with the output cable, the output cable is buried below the ground to lay the wiring, but because the cable is close to the ground, some animals in the field can be close to the output cable of the transformer, and then the output cable of the transformer is damaged, so that the damage to the animals is caused, the transformer is easily damaged due to short circuit, and great loss is caused.

In view of the above-mentioned related art, the inventors consider that there is a defect that the output cable of the transformer is easily damaged by animals in the field.

SUMMERY OF THE UTILITY MODEL

In order to reduce the destruction of open-air animal to the output cable, this application provides the main transformer system of transformer substation.

The application provides a main transformer system of transformer substation adopts following technical scheme:

a main transformer system of a transformer substation comprises a transformer, a mounting device and a protection assembly; an input side coil of the transformer is connected with an external high-voltage wire through an input cable, and high-voltage electricity is subjected to voltage reduction through the transformer and then is connected with a bus to be output through an output side coil of the transformer; the telegraph poles are provided with a plurality of telegraph poles for bearing high-voltage wires on the ground; the mounting device is fixedly arranged on the ground, the transformer is fixedly connected with the mounting device, the output cable is sleeved with the protection assembly, and the protection assembly is fixedly connected with the transformer.

By adopting the technical scheme, the protective component sleeves the output cable, so that the output cable is isolated from the outside; meanwhile, the protection component is fixedly arranged on the side wall of the transformer, so that the stability of the output cable is enhanced, and the damage of outdoor animals to the output cable is reduced.

Optionally, the protection component is a cable protection tube, the output cable is sleeved by the cable protection tube, and the bottom end of the cable protection tube is buried underground; one side of the transformer, which is close to the cable protection tube, is fixedly provided with a fixing piece, and the fixing piece is fixedly connected with the cable protection tube.

Through adopting above-mentioned technical scheme, the cable pillar is established the output cable cover, and simultaneously, the cable pillar is fixed at the lateral wall of transformer with the mounting for the cable pillar is stronger with the integrative nature of transformer, has increased protection component's stability.

Optionally, the mounting device is a concrete base, the bottom of the concrete base is buried underground, and the bottom of the transformer is fixedly connected with the top end of the concrete base.

Through adopting above-mentioned technical scheme, the bearing capacity of concrete base platform is good, can play good support to the transformer for the transformer is placed stably.

Optionally, the transformer is an oil tank type transformer, an oil unloading groove is formed in the ground, the bottom end of the concrete base platform is buried into the bottom of the oil unloading groove, and cobblestones are laid in the oil unloading groove.

Through adopting above-mentioned technical scheme, when overhauing transformer or transformer ware oil leak, can make on the oil stream that the transformer leaked goes into the cobblestone in unloading the oil groove for oil can cool down rapidly, reduces the probability of burning.

Optionally, a post insulator is fixedly arranged on the electric pole close to the output coil of the transformer, and the output cable is wound on the post insulator.

Through adopting above-mentioned technical scheme, post insulator can play the effect of support to the output cable, and post insulator can make to be insulating between output cable and the wire pole simultaneously, has reduced the emergence of electric leakage, has promoted the security.

Optionally, a bus thermal shrinkage sleeve is sleeved on the bus.

By adopting the technical scheme, the bus heat-shrinkable sleeve is sleeved on the bus, so that the bus and other electric conductors are insulated, the generation of electric arcs is reduced, meanwhile, the occurrence of short circuits is reduced, and the functional stability of the transformer output coil is enhanced.

Optionally, the lateral wall of the concrete base is fixedly provided with a grounding flat steel, the bottom end of the grounding flat steel is buried underground and connected with a grounding grid, and the top end of the grounding flat steel is fixedly connected with the bottom end of the transformer.

Through adopting above-mentioned technical scheme, the effect that ground connection band steel can further play the support to the transformer, and ground connection band steel can make the more convenient ground connection of other components and parts simultaneously, has promoted the convenience of system.

Optionally, a support member is fixedly arranged on the telegraph pole, and a post insulator is also fixedly arranged on the support member; the bus is fixedly connected with the post insulator; the lower side of the supporting piece is fixedly provided with a lightning arrester, the high-voltage end of the lightning arrester is connected with the bus, and the low-voltage end of the lightning arrester is connected with the grounding flat steel.

Through adopting above-mentioned technical scheme, the lightning arrester can be with the leading-in underground of the instantaneous heavy current that produces when thunderbolt, reduced the injury of thunderbolt to transformer and generating line, promoted the functional stability of transformer, reduced loss of property.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the protection component sleeves the output cable, so that the output cable is isolated from the outside; meanwhile, the protection component is fixedly arranged on the side wall of the transformer, so that the stability of the output cable is enhanced, and the damage of outdoor animals to the output cable is reduced;

2. the post insulator can support the output cable, and meanwhile, the post insulator can insulate the output cable from the telegraph pole, so that the occurrence of electric leakage is reduced, and the safety is improved;

3. the lightning arrester can lead in the instantaneous heavy current that produces when thunderbolt into underground, has reduced the injury of thunderbolt to transformer and generating line, has promoted the functional stability of transformer, has reduced loss of property.

Drawings

FIG. 1 is a schematic cross-sectional view of a main transformer system in an embodiment of the present application;

fig. 2 is a partially enlarged schematic view of a in fig. 1 according to an embodiment of the present application.

Description of reference numerals: 1. a transformer; 11. an input coil; 12. an output coil; 13. an oil tank; 14. a bus bar; 15. a bus thermal shrinkage sleeve; 16. an output cable; 2. a utility pole; 21. a high-voltage line; 22. an input cable; 23. a post insulator; 24. a support member; 3. a guard assembly; 31. a protective sleeve; 32. a fixing member; 4. a mounting device; 41. a concrete foundation; 42. grounding flat steel; 5. oil discharge grooves; 51. cobblestones; 6. an arrester.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a main transformer system of a transformer substation, which refers to fig. 1 and comprises a mounting device 4 arranged on the ground, a transformer 1 and a protection part, wherein a plurality of telegraph poles 2 used for supporting high-voltage lines 21 are vertically buried on the ground; the transformer 1 is fixedly arranged at the top end of the mounting device 4, the high-voltage wire 21 is connected with the input coil 11 of the transformer 1 through the input cable 22, high-voltage electricity is output through the bus 14 connected with the output coil 12 of the transformer 1 after being reduced by the transformer 1, and the output cable 16 is connected with the bus 14 to supply power to the outside. The protection component 3 is fixedly connected with the side wall of the transformer 1, and the output cable 16 is sleeved with the protection component 3. Protection component 3 establishes back with transformer 1 lateral wall fixed connection with output cable 16 cover, has strengthened output cable 16's stability, and protection component 3 is isolated with the cable simultaneously, has reduced open-air animal to output cable 16's destruction.

Referring to fig. 1 and 2, the installation device 4 is a concrete base 41, an oil discharge groove 5 is opened on the ground, and the bottom of the concrete base 41 is embedded under the ground in the oil discharge groove 5; the transformer 1 is an oil tank 13 type transformer 1, and the top end of the transformer 1 is fixedly arranged at the top end of the concrete base 41 and connected through a bolt; the side wall of the transformer 1 is connected with a vertical grounding flat steel 42 through a bolt, the bottom end of the grounding flat steel 42 is buried below the ground and connected with a grounding grid, and the top end of the grounding flat steel 42 is connected with the bottom of the transformer 1 through a bolt. The concrete foundation acts as a support for the transformer 1, and the grounding flat steel 42 further supports the transformer 1, so that the stability of the transformer 1 is better.

Referring to fig. 1 and 2, a support member 24 is fixedly arranged on the utility pole 2 close to the output coil 12 of the transformer 1, and the support member 24 is a channel steel; one end of the support member 24 is welded with the side wall of the telegraph pole 2, the other end of the support member 24 is welded with the side wall of the transformer 1, and one side of the groove of the support member 24 faces upwards; a vertical post insulator 23 is connected to the upper side of the support 24 through a bolt, and the bus 14 is connected with the top end of the post insulator 23 through a bolt; the bus 14 is sleeved with a bus heat-shrinkable sleeve 15, and the supporting piece 24 and the post insulator 23 play a role in supporting the bus 14, so that the bus 14 can be stably placed. The bus heat-shrinkable sleeve 15 is sleeved on the bus 14, so that adjacent buses 14 can be insulated from each other, the occurrence of short circuit is reduced, and the generation of electric arcs is also reduced.

Referring to fig. 1 and 2, the same post insulator 23 is also welded to the side wall of the utility pole 2, and the output cable 16 is connected to the bus bar 14 and then wound around the post insulator 23. The protection component 3 comprises a cable protective pipe and a fixing piece 32, wherein the fixing piece 32 is hot galvanizing angle steel; one end of the fixing piece 32 is welded with the side wall of the transformer 1, and the other end of the fixing piece 32 is welded with the telegraph pole 2; the cable sheath is provided to cover the output cable 16 wound around the post insulator 23. The fixing member 32 fixes the cable sheath while fixing the output cable 16 so that the output cable 16 is kept stable. When the transformer 1 leaks oil or is overhauled, the leaked oil flows into the cobblestones 51 in the oil unloading tank 5, and the cobblestones 51 can quickly cool the oil and reduce the burning probability of the oil; meanwhile, when the transformer 1 falls, the cobblestones 51 can buffer the transformer 1, and the damage degree of the transformer 1 is reduced.

Referring to fig. 1 and 2, the lightning arrester 6 is bolted to the bottom of the support member 24, the high-voltage end of the lightning arrester 6 is connected to the bus bar 14, and the low-voltage end of the lightning arrester 6 is connected to the ground flat bar 42. When lightning strike occurs, instantaneous large current generated by the coil of the transformer 1 can be introduced into the ground through the lightning arrester 6, and the damage of the lightning strike to the transformer 1 is reduced.

The implementation principle of a main transformer system of a transformer substation in the embodiment of the application is as follows: the cable pillar keeps apart output cable 16 with the external world, and fixing piece 32 is fixed with the cable pillar, and it is fixed with output cable 16 simultaneously for output cable 16 remains stable, has reduced the destruction that open-air animal caused output cable 16, has promoted output cable 16's life.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A main transformer system of a transformer substation is characterized in that: comprises a transformer (1), a mounting device (4) and a protection component (3); an input side coil of the transformer (1) is connected with an external high-voltage wire (21) through an input cable (22), and high-voltage electricity is output by an output side coil connecting bus (14) of the transformer (1) after being reduced by the transformer (1); the telegraph pole (2) is provided with a plurality of telegraph poles (2) used for bearing high-voltage wires (21) on the ground; the mounting device (4) is fixedly arranged on the ground, the transformer (1) is fixedly connected with the mounting device (4), the output cable (16) is sleeved with the protection component (3), and the protection component (3) is fixedly connected with the transformer (1).

2. The main transformer system of a substation according to claim 1, characterized in that: the protection component (3) is a cable protection tube, the output cable (16) is sleeved by the cable protection tube, and the bottom end of the cable protection tube is buried underground; one side of the transformer (1) close to the cable protection tube is fixedly provided with a fixing piece (32), and the fixing piece (32) is fixedly connected with the cable protection tube.

3. The main transformer system of a substation according to claim 1, characterized in that: the mounting device (4) is a concrete base (41), the bottom of the concrete base (41) is buried underground, and the bottom of the transformer (1) is fixedly connected with the top end of the concrete base (41).

4. A primary transformation system of a substation according to claim 3, wherein: the transformer (1) is an oil tank (13) type transformer (1), an oil unloading groove (5) is formed in the ground, the bottom end of the concrete base (41) is embedded into the bottom of the oil unloading groove (5), and cobblestones (51) are laid in the oil unloading groove (5).

5. The main transformer system of a substation according to claim 1, characterized in that: and a post insulator (23) is fixedly arranged on the telegraph pole (2) close to the output coil (12) of the transformer (1), and an output cable (16) is wound on the post insulator (23).

6. The main transformer system of a substation according to claim 1, characterized in that: and a bus thermal shrinkable sleeve (15) is sleeved on the bus (14).

7. A primary transformation system of a substation according to claim 3, wherein: and the side wall of the concrete base (41) is fixedly provided with a grounding flat steel (42), the bottom end of the grounding flat steel (42) is buried underground and is connected with a grounding grid, and the top end of the grounding flat steel (42) is fixedly connected with the bottom end of the transformer (1).

8. The main transformer system of a substation according to claim 1, characterized in that: a support piece (24) is fixedly arranged on the telegraph pole (2), and a post insulator (23) is also fixedly arranged on the support piece (24); the bus (14) is fixedly connected with the post insulator (23); the lower side of the supporting piece (24) is fixedly provided with the lightning arrester (6), the high-voltage end of the lightning arrester (6) is connected with the bus (14), and the low-voltage end of the lightning arrester (6) is connected with the grounding flat steel (42).