CN214379685U

CN214379685U - Box transformer substation foundation of 35KV and below in north wind power plant

Info

Publication number: CN214379685U
Application number: CN202120059494.6U
Authority: CN
Inventors: 于亮; 郭峰; 韩强; 刘琦峰; 李宪智; 吕伟滨; 桑玉龙; 张群; 张伟
Original assignee: Yichun Huayu Power New Energy Co ltd; China Three Gorges Renewables Group Co Ltd Northeast China Branch
Current assignee: Yichun Huayu Power New Energy Co ltd; China Three Gorges Renewables Group Co Ltd Northeast China Branch
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-10-08
Anticipated expiration: 2031-01-11

Abstract

The utility model provides a north wind-powered electricity generation field 35KV reaches following case and becomes basis, and it includes the foundation, the top fixed mounting of foundation has the bottom plate, the top of bottom plate is provided with case and becomes support wall body, the top that the case becomes support wall body supports there is prefabricated steel construction, prefabricated steel construction's top is fixed with the case and becomes the bottom plate, the top fixed mounting that the case becomes the bottom plate has the case to become the case and becomes, the top that the case becomes is provided with the case and becomes the top cap. This case becomes basis and reforms transform can effectually prevent that the moisture that case becomes basic bottom ponding produced from getting into the case and become the body, and better solution case becomes the problem of frost condensation, reduces the case and becomes interior electrical equipment, terminal row emergence flashover, the emergence of creeping discharge phenomenon, guarantee case and become the safety and stability operation, ensure field station production safety, create better economic benefits and make strong guarantee.

Description

Box transformer substation foundation of 35KV and below in north wind power plant

Technical Field

The utility model relates to a fan wind-powered electricity generation case becomes technical device field, especially relates to northern wind-powered electricity generation field 35KV and following case become basis.

Background

A33-35 kV box transformer is adopted in an Eichun, Wuyilingand Argentina river wind power plant (49.5 MW) project of the three gorges new energy, namely the Heilongjiang province, severe frosting and condensation phenomena can be generated inside the box transformer in spring and autumn every year, and frosting can occur in winter. The main reason for this phenomenon is that accumulated water exists in cable wells at the bottom of the box transformer substation to different degrees, which causes air humidity, and the humidity enters the box transformer substation from the cable wells of the box transformer substation, and in addition, the temperature difference between the inside and the outside of the box transformer substation is large in the spring, autumn and winter in the north, so that condensation and frosting are generated inside the box transformer substation. The phenomenon can cause flashover and creeping discharge of electrical equipment and terminal blocks in the box transformer substation, and can cause short-circuit accidents of the box transformer substation in severe cases, so that the phenomenon brings serious harm to safe and stable operation of on-site box transformer substation equipment.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, the case becomes basis below providing northern wind-powered electricity generation field 35KV, this case becomes basis and reforms transform can effectually prevent that the case from becoming the moisture that basic bottom ponding produced and getting into the case and become the body, better solution case becomes the problem of frost condensation, reduce the case and become interior electrical equipment, terminal row take place the flashover, the emergence of creeping on the phenomenon of discharging along the face, guarantee case becomes the safety and stability operation, ensure the production safety of field station, create better economic benefits and make strong guarantee. The popularization and application range is applied to outdoor box-type transformers of 35kV or below.

In order to realize the technical characteristics, the purpose of the utility model is realized as follows: northern wind-powered electricity generation field 35KV reaches following case becomes basis, it includes the ground basis, the top fixed mounting of ground basis has the bottom plate, the top of bottom plate is provided with case and becomes support wall body, the top support that the case becomes support wall body has prefabricated steel construction, the top of prefabricated steel construction is fixed with the case and becomes the bottom plate, the top fixed mounting that the case becomes the bottom plate has the case to become the transformer substation, the top that the case becomes is provided with the case and becomes the top cap.

The foundation and the bottom plate are both formed by pouring concrete.

The box transformer substation supporting wall body is formed by stacking bricks.

The box becomes's stand internal connection has the lightning rod connecting wire, the bottom of lightning rod connecting wire is run through box becomes bottom plate, prefabricated steel construction and box becomes and links to each other with the earth connection after supporting wall body, the earth connection links to each other with the ground flat steel of burying underground in ground inside.

The lower part of the box transformer substation supporting wall body is positioned below the ground, and the upper part of the box transformer substation supporting wall body is positioned above the ground; and a plurality of symmetrically arranged shutters are arranged on two side walls of the supporting wall body.

And operation steps are arranged in the middle of the four side surfaces of the box transformer substation supporting wall body.

A first drain hole and a second drain hole which are symmetrically arranged are reserved on one side wall of the box transformer substation supporting wall body, and a cable hole is formed in the middle of the side where the first drain hole and the second drain hole are located.

Prefabricated steel construction includes the bottom frame, the top of bottom frame supports through many stands and installs the top frame, cross arrangement has horizontal stiffener and vertical stiffener between the bottom frame, bilateral symmetry is provided with the reinforcing baffle around the top frame, processing has the through-hole on the reinforcing baffle.

And a thin reinforcing rod is arranged between the transverse reinforcing rod and the longitudinal reinforcing rod.

The utility model discloses there is following beneficial effect:

1. through adopting the utility model discloses a case becomes basis, it reforms transform on original case becomes basis, through increasing original height, and increase the support through prefabricated steel construction to it, reform transform and can effectually prevent that the moisture that case becomes basis bottom ponding produced from getting into the case and become the body, better solution case becomes the problem of frost condensation, reduce the case and become interior electrical equipment, the terminal row takes place the flashover, the emergence of creeping discharge phenomenon, guarantee case becomes the safety and stability operation, guarantee station production safety, create better economic benefits and make strong guarantee. The popularization and application range is applied to outdoor box-type transformers of 35kV or below.

2. The stability and the reliability of the whole box transformer substation supporting structure are enhanced by adopting the foundation and the bottom plate.

3. The bricks are piled up, so that the manufacturing process is simplified, and the construction difficulty is reduced.

4. Through foretell connection structure, can play the purpose of lightning protection, through with the reliable connection of lightning rod and ground connection band steel, and then be convenient for realize lightning grounding.

5. The louver can well emit moisture and prevent the phenomena of frost condensation, condensation and frosting.

6. Through foretell operation step can be convenient the operation of ascending a height.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a front view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a left side view of the present invention.

Figure 4 is the utility model discloses prefabricated steel construction three-dimensional map.

In the figure: the box transformer substation comprises a foundation 1, a bottom plate 2, a louver 3, a grounding flat steel 4, a grounding wire 5, an operation step 6, a box transformer substation supporting wall 7, a channel steel 8, a prefabricated steel structure 9, a box transformer substation bottom plate 10, a box transformer substation 11, a lightning rod connecting wire 12, a box transformer substation top cover 13, a cable hole 14, a second water drainage hole 15 and a first water drainage hole 16;

bottom frame 901, vertical columns 902, longitudinal stiffeners 903, transverse stiffeners 904, top frame 905, thin stiffeners 906, stiffened baffle 907, through holes 908.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

Referring to fig. 1-4, a northern wind power station 35KV and below box transformer substation foundation comprises a foundation 1, a bottom plate 2 is fixedly installed at the top of the foundation 1, a box transformer substation supporting wall 7 is arranged at the top of the bottom plate 2, a prefabricated steel structure 9 is supported at the top of the box transformer substation supporting wall 7, a box transformer substation bottom plate 10 is fixed at the top of the prefabricated steel structure 9, a box transformer substation 11 is fixedly installed at the top of the box transformer substation bottom plate 10, and a box transformer substation top cover 13 is arranged at the top of the box transformer substation 11. Through the adoption of the structure of the box transformer substation foundation, the box transformer substation can adapt to the northern weather well, the problem of frost condensation of the box transformer substation is solved well, the phenomenon that flashover and creeping discharge occur to electrical equipment and terminal blocks in the box transformer substation is reduced, the box transformer substation is ensured to run safely and stably, the production safety of a station is ensured, and better economic benefit is created to make powerful guarantee. The popularization and application range is applied to outdoor box-type transformers of 35kV or below.

Further, the foundation base 1 and the bottom plate 2 are both formed by pouring concrete. The stability and reliability of the whole box transformer substation supporting structure are enhanced by adopting the foundation 1 and the bottom plate 2.

Further, the box transformer substation supporting wall 7 is formed by building bricks. The bricks are piled up, so that the manufacturing process is simplified, and the construction difficulty is reduced.

Furthermore, a lightning rod connecting wire 12 is connected to the inside of the upright post of the box transformer substation 11, the bottom end of the lightning rod connecting wire 12 is connected with a grounding wire 5 after penetrating through a box transformer substation bottom plate 10, a prefabricated steel structure 9 and a box transformer substation supporting wall 7, and the grounding wire 5 is connected with a grounding flat steel 4 buried in the foundation. Through foretell connection structure, can play the purpose of lightning protection, through with the reliable connection of lightning rod and ground connection band steel, and then be convenient for realize lightning grounding.

Further, the lower part of the box transformer substation supporting wall 7 is located below the ground, and the upper part of the box transformer substation supporting wall is located above the ground; a plurality of symmetrically arranged shutters 3 are arranged on two side walls of the supporting wall 7. The louver 3 can well emit moisture and prevent the phenomena of frost condensation, condensation and frosting.

Furthermore, operation steps 6 are arranged in the middle of the four side surfaces of the box transformer substation supporting wall 7. The operation of ascending a height can be facilitated by the operation step 6.

Furthermore, a first drain hole 16 and a second drain hole 15 which are symmetrically arranged are reserved on one side wall of the box transformer substation supporting wall 7, and a cable hole 14 is arranged in the middle of the side where the first drain hole 16 and the second drain hole 15 are located. The drainage holes can serve the purpose of draining water, and the cable holes 14 can be used for passing through cables.

Further, the prefabricated steel structure 9 includes a bottom frame 901, a top frame 905 is supported and installed on the top of the bottom frame 901 through a plurality of columns 902, a transverse reinforcing rod 904 and a longitudinal reinforcing rod 903 are arranged between the bottom frames 901 in a crossing manner, reinforcing baffles 907 are symmetrically arranged on the front side and the rear side of the top frame 905, and through holes 908 are processed on the reinforcing baffles 907. Can be used for increasing case through foretell prefabricated steel construction 9 and become 11, and then can effectually distribute away the moisture that case becomes basic bottom ponding produced when expanding basic bottom space, prevent that moisture from getting into the case and becoming the body and producing the phenomenon of frost, condensation, frosting, ensure the case and become the operation of safety and stability.

Further, a thin reinforcing rod 906 is arranged between the transverse reinforcing rod 904 and the longitudinal reinforcing rod 903. The structural strength and stability of the entire prefabricated steel structure 9 is enhanced by the above-described structure.

The utility model discloses a working process and principle do:

the utility model discloses an in the concrete transformation work progress, through heightening 300mm on original basis, demolish the case becomes the body, prefabricated steel construction 9 basis of heightening is prefabricated in advance, and heighten partial prefabricated steel construction 9 and adopt the steel structure form, application cavity technology, dig out the case becomes and reserves cable part 475m outside the basis, the cable that will dig out lifts by crane along with the case becomes the body simultaneously, backfill 368m soil side bottom the case becomes the basis, put prefabricated steel construction 9 into the former basis and install, install on falling the steel structure basis with former case becomes the body after heightening partial basis installation, the reserve cable part who digs out simultaneously carries out 475m top, install the protection network around the case becomes the basis, can effectually distribute out the moisture that case becomes basis bottom ponding produced when expanding basic bottom space, prevent that moisture from getting into the case and become the body and produce the frost setting, Condensation and frosting phenomena are avoided, and safe and stable operation of the box transformer substation is ensured.

Claims

1. Northern wind power plant 35KV and below box transformer substation foundation, which is characterized in that: it includes foundation (1), the top fixed mounting of foundation (1) has bottom plate (2), the top of bottom plate (2) is provided with the case and becomes support wall body (7), the top support that the case becomes support wall body (7) has prefabricated steel construction (9), the top of prefabricated steel construction (9) is fixed with case and becomes bottom plate (10), the top fixed mounting of case becomes bottom plate (10) has case and becomes (11), the top that the case becomes (11) is provided with case and becomes top cap (13).

2. The northern wind power plant 35KV and the following box transformer substation foundation of claim 1, characterized in that: the foundation (1) and the bottom plate (2) are both formed by pouring concrete.

3. The northern wind power plant 35KV and the following box transformer substation foundation of claim 1, characterized in that: the box transformer substation supporting wall body (7) is formed by stacking bricks.

4. The northern wind power plant 35KV and the following box transformer substation foundation of claim 1, characterized in that: the box becomes stand internal connection of (11) has lightning rod connecting wire (12), the bottom of lightning rod connecting wire (12) runs through box becomes bottom plate (10), prefabricated steel construction (9) and box becomes and links to each other with earth connection (5) after supporting wall body (7), earth connection (5) link to each other with ground flat steel (4) of burying underground in ground inside.

5. The northern wind power plant 35KV and the following box transformer substation foundation of claim 1, characterized in that: the lower part of the box transformer substation supporting wall body (7) is positioned below the ground, and the upper part of the box transformer substation supporting wall body is positioned above the ground; a plurality of symmetrically arranged shutters (3) are arranged on two side walls of the supporting wall body (7).

6. The northern wind power plant 35KV and the following box transformer substation foundation of claim 1, characterized in that: and operation steps (6) are arranged in the middle of the four side surfaces of the box transformer substation support wall body (7).

7. The northern wind power plant 35KV and the following box transformer substation foundation of claim 1, characterized in that: a first drain hole (16) and a second drain hole (15) which are symmetrically arranged are reserved on one side wall of the box transformer substation supporting wall body (7), and a cable hole (14) is formed in the middle of the side where the first drain hole (16) and the second drain hole (15) are located.

8. The northern wind power plant 35KV and the following box transformer substation foundation of claim 1, characterized in that: the prefabricated steel structure (9) comprises a bottom frame (901), a top frame (905) is supported and installed at the top of the bottom frame (901) through a plurality of upright posts (902), transverse reinforcing rods (904) and longitudinal reinforcing rods (903) are arranged between the bottom frame (901) in a crossed mode, reinforcing baffles (907) are symmetrically arranged on the front side and the rear side of the top frame (905), and through holes (908) are machined in the reinforcing baffles (907).

9. The north wind farm 35KV and the following box transformer substation foundation of claim 8, characterized in that: a thin reinforcing rod (906) is arranged between the transverse reinforcing rod (904) and the longitudinal reinforcing rod (903).