CN204497636U - A kind of built on stilts inlet wire China used for wind power generation formula case becomes - Google Patents

Abstract

The utility model discloses a box-type box-type substation with overhead incoming lines for wind power generation. A transformer is located on the right side of the box-substation, and a high-voltage cable room, a load switch room, and a low-voltage room are located on the left side of the box-substation. They are arranged in a character-shaped structure. The high-voltage room is divided into a high-voltage cable room and a load switch room. Isolation switches and high-voltage wall bushings are installed inside the high-voltage cable room. Lightning arresters, fuses, and grounding knives are installed inside the load switch room. Low-voltage cabinets are installed inside the low-voltage room. . One side of the transformer is connected to the high and low voltage room, and three sides are located outdoors with radiators. The insulation of the high-voltage top outgoing line is better than the national standard, and it is connected with the collector line through the overhead line. The high-voltage cable room is equipped with sensors, electromagnetic locks, and electrification indicators to realize electrical interlocking; the load switch room is also installed with sensors, electromagnetic locks, and electrification indicators. Realize electrical interlocking, and at the same time, the load switch is equipped with a rotating link, which can realize mechanical interlocking, so that the box transformer can achieve double protection.

Description

A type of box-type box-type substation with overhead incoming line for wind power generation

technical field

The utility model relates to the technology of electric power distribution equipment, in particular to a box-type box-type transformer with overhead incoming lines for wind power generation.

Background technique

Box-type transformer is a combined power transformation and distribution equipment that integrates transformer high-voltage switchgear, distribution transformer and low-voltage power distribution device. The overhead incoming line box-type transformer for wind power generation is an electrical equipment used at the outlet of the wind turbine to increase the voltage from 0.69kV to 35kV and then merge into the grid. The existing wind power box-type substations generally have shortcomings such as poor heat dissipation of the transformer, high temperature, inconvenient replacement of fuses, difficult cable construction, difficult detection of cable failures, unreasonable structural design, and inconvenient maintenance.

Utility model content

In order to solve the above-mentioned problems existing in the existing wind power generation box substation, the utility model provides a Chinese type box substation with overhead incoming lines for wind power generation;

The box transformer includes a transformer, a high-voltage room and a low-voltage room; it is characterized in that: the high-voltage room is divided into a high-voltage cable room and a load switch room, and an isolating switch and a high-voltage wall bushing are installed inside the high-voltage cable room; Lightning arresters, fuses, and grounding blades are installed inside the load switch chamber; the low-voltage chamber includes a low-voltage cabinet.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model: including a transformer 1, a copper bar 2, an insulator 3, a lightning arrester 4, a grounding knife 5, a sensor 6, a load switch 7, a fuse 8, a disconnector 9 and a high-voltage wall bushing 10;

Fig. 2 is a top view of Fig. 1: including transformer 1, low-voltage cabinet 11, low-voltage chamber 12, load switch chamber 13, high-voltage cable chamber 14, and lower wellhead 15;

Fig. 3 is a left view of Fig. 1: including load switch 7, high-voltage wall bushing 10 and low-voltage cabinet 11;

Figure 4 is the right side view of Figure 1.

Detailed ways

Below in conjunction with accompanying drawing 1 to 4 the utility model is described further.

The utility model discloses a box-type box-type substation with overhead incoming lines for wind power generation. The box-substation includes a transformer, a high-voltage room and a low-voltage room; , they are arranged in a zigzag structure.

The high-voltage room is divided into a high-voltage cable room and a load switch room. The high-voltage cable room is equipped with an isolating switch and a high-voltage wall bushing; the load switch room is equipped with a lightning arrester, a fuse, and a grounding knife; Cabinet, down the wellhead.

One side of the transformer is connected to the high-voltage room and the low-voltage room, and the other three sides are located outside the box-type transformer and equipped with a fixed radiator, which saves the forced ventilation device, meets the heat dissipation requirements, and reduces the volume of the box-type transformer.

The insulation of the high-voltage top outgoing line is better than the national standard. The overhead line is connected with the collector line. The high-voltage cable room is equipped with sensors, electromagnetic locks, and live displays to realize electrical interlocking; the high-voltage cable room is connected with the overhead collector line through a high-voltage wall bushing. Reduce the amount of on-site construction, and facilitate maintenance when the overhead cable fails.

The load switch room is also equipped with sensors, electromagnetic locks, and charged displays to realize electrical interlocking. At the same time, the load switch room is equipped with rotating links to achieve mechanical interlocking, so that the box transformer can achieve double protection.

The fuse is installed in the load switch room, and the isolating switch is located in the high-voltage cable room. When the fuse is replaced, a visible fracture is formed. After the power supply is cut off, the transformer and low-voltage cabinet can be inspected and repaired, and the performance of a single box transformer can be inspected continuously without affecting the performance of the transformer. The whole line generates power; the isolating switch and load switch room can realize mechanical and electric operation, and the high-voltage cable room and load switch room can realize five defenses. It can be seen that it is convenient for maintenance.

The box transformer also includes a first copper bar and a second copper bar; after the wind generator generates electricity, it enters the transformer through the low-voltage cabinet through the first copper bar, and the voltage is raised by the transformer and enters the load switch through the second copper bar. , connected to the fuse, and connected to the high-voltage wall bushing through the isolating switch to output the electric energy to the grid.

Therefore, the utility model has the characteristics of low production cost, safe and reliable performance, beautiful appearance, and convenient maintenance.

Example 1

As shown in Figure 1, Figure 2, Figure 3, and Figure 4, the left side of the transformer 1 is the load switch room 13, the left side of the load switch room 13 is the high-voltage cable room 14, and the upper part of the load switch room 13 and the high-voltage cable room 14 is the low-voltage room 12. The high-voltage chamber, the low-voltage chamber 14, and the transformer 1 are arranged in a character-shaped structure as a whole. A disconnector 9, a high-voltage wall bushing 10 are installed inside the high-voltage cable room, a lightning arrester 4, a fuse 8, and a grounding knife 5 are installed inside the load switch room, and a low-voltage cabinet 11 and a wellhead 15 are installed inside the low-voltage room. One side of the transformer is connected to the high and low voltage room, and the three sides are located outside the box transformer and equipped with radiators. The insulation of the wall-piercing bushing at the top of the high-voltage cable room is better than the national standard. The high-voltage cable room is equipped with sensors 6, electromagnetic locks, and charged indicators to realize electrical interlocking and isolation of charged objects; the load switch room is also installed with sensors 6, electromagnetic locks, and charged The display is used to realize electrical interlocking, and the load switch room is equipped with a rotating connecting rod to realize mechanical interlocking, so that the box transformer can achieve double protection.

The working process of the substation is as follows: After the wind power generator sends out electric energy, it enters the transformer 1 through the low-voltage cabinet 11 through the copper bar, the voltage is raised by the transformer 1, enters the load switch 7 through the copper bar 2, connects to the fuse 8, and passes through the isolation The switch 9 is connected to the high-voltage wall bushing 10 to output electric energy to the grid.

The method provided by the present utility model has been described in detail above. The principle and implementation of the present utility model have been explained by using specific examples in this paper. The description of the above examples is only used to help understand the method of the present utility model and its implementation. core idea; at the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation and scope of application. limits.

Claims (8)

1. A kind of box-type box change with overhead incoming line for wind power generation, the box change includes a transformer, a high-voltage chamber and a low-voltage chamber; it is characterized in that: the high-voltage chamber is divided into a high-voltage cable chamber and a load switch chamber, and the high-voltage cable An isolating switch and a high-voltage wall bushing are installed inside the chamber; a surge arrester, a fuse, and a grounding knife are installed inside the load switch chamber; the low-voltage chamber includes a low-voltage cabinet. 2. The box-type transformer according to claim 1, characterized in that: the high-voltage cable room is equipped with sensors, electromagnetic locks, and electrification indicators for realizing electrical interlocking. 3. The box-type transformer according to claim 1, characterized in that: the load switch room is equipped with sensors, electromagnetic locks, and electrification indicators for realizing electrical interlocking; the load switch room is also equipped with a rotating connecting rod for Realize mechanical interlocking. 4. The box-type transformer according to claim 1, characterized in that: the transformer is located on the right side of the box-type transformer, and the high-voltage chamber and the low-voltage chamber are located on the left side of the box-type transformer, and they are arranged in a zigzag structure. 5. The box-type transformer according to claim 1, wherein one side of the transformer is connected to the high-voltage chamber and the low-voltage chamber, and the other three sides are located outside the box-type transformer and are provided with fixed radiators. 6. The box-type transformer according to claim 1, characterized in that: the low-pressure chamber also includes a wellhead. 7. The box-type transformer according to claim 1, characterized in that: the high-voltage cable room in the box-type transformer merges with the overhead collector line through the high-voltage wall bushing, thereby reducing the amount of on-site construction, and when the overhead cable fails Easy maintenance. 8. The box-type transformer according to claim 2, characterized in that: the box-type transformer also includes a first copper bar and a second copper bar; after the wind power generator generates electricity, it enters the transformer through the low-voltage cabinet through the first copper bar After the voltage is raised by the transformer, it enters the load switch through the second copper bar, connects to the fuse, and connects to the high-voltage wall bushing through the isolation switch to output the electric energy to the grid.