CN208094194U - Dry type hollow shunt reactor arrangement - Google Patents

Abstract

The utility model relates to an arrangement structure of a dry-type hollow shunt reactor. It solves the problems that the existing dry-type air-core shunt reactor occupies a large area and the like. Including B-phase reactor, C-phase reactor, A-phase reactor, the right side of the upper terminal of A-phase reactor and the upper terminal of C-phase reactor are respectively connected with aluminum-magnesium alloy tubes, and the aluminum-magnesium alloy tubes are respectively arranged in The upper ends of the first pillar insulators, the aluminum-magnesium alloy tube and the left side of the upper terminal of the B-phase reactor are respectively connected to the current transformers, and the current transformers are respectively connected to the three circuit breakers one by one. The circuit breaker and the current transformer The circuit breakers are respectively arranged uniformly along the longitudinal direction, and the circuit breakers are respectively connected to the bus C phase, bus B phase and bus A phase through the isolation switch, and the bus C phase, bus B phase and bus A phase are arranged horizontally on the upper end of the second post insulator in sequence. The advantages are: the connection stability of each component is high, the space is fully utilized, and the land acquisition area of the substation is effectively controlled.

Description

Arrangement structure of dry-type air-core shunt reactor

technical field

The utility model relates to substation equipment, in particular to an arrangement structure of a dry-type hollow shunt reactor.

Background technique

With the process of urbanization, more and more substations are built in load centers such as urban areas, and the lines are also made of conventional overhead wires using cables, and more reactive power compensation uses shunt reactors. Dry-type air-core shunt reactors are due to their products Mature technology, oil-free and other advantages are widely used, but because the magnetic circuit is completed by air, the distance from the center of the reactor to the fence is greater than 1.1D, the space between the top and bottom is greater than 0.5D, and the distance between the three-phase centers is not less than 1.7D, outdoor installation. (D-the maximum outer diameter of the reactor). If it is temporarily considered according to BKK-20000/35, the D of the reactor should not be greater than 3.0. For a long time, due to the heavy weight and large volume of dry-type air-core shunt reactors, the vertical arrangement cannot be realized. The conventional outdoor dry-type air-core reactors are arranged in a three-phase pattern, which is limited by the center distance between the three phases. The limit of not less than 1.7D, in order to reduce the occupied area, generally the two groups of reactors are arranged in reverse type, see Figure 1 for details, after this optimization still occupies a large area, the center distance between the two groups of reactors is generally It must be greater than about 10 meters. Because the reactor limits the width of the overall interval, and the interval between the 35kV isolating switch and the current transformer is 4.0 meters, limited by the magnetic circuit of the reactor, the reactor interval width is generally 10 meters. Other electrical equipment cannot be arranged in the space, the space between the intervals cannot be used, and there is a certain degree of waste in the space utilization of the overall power distribution device.

In order to solve the above problems, people have carried out long-term exploration. For example, a Chinese patent discloses a new type of dry-type air-core shunt reactor arrangement [Application No.: 201520552435.7], which includes A, B, C three-phase single-phase The phase reactor and the post insulators of each phase are characterized in that: the three-phase reactors are arranged in a "one" shape in the order of C, A, and B, and the single-phase reactor arranged in the middle is provided with two neutral point terminals. They are respectively connected to the single-phase reactors arranged on both sides. Although the above solution solves the problem that the existing dry-type air-core shunt reactor occupies a large area to a certain extent, the solution still has problems such as poor stability and low connection reliability.

Contents of the invention

The purpose of this utility model is to solve the above problems and provide a dry-type air-core shunt reactor arrangement structure with simple structure and high stability.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: the dry-type hollow shunt reactor layout structure includes B-phase reactors, C-phase reactors and A-phase reactors arranged horizontally from left to right, and its characteristics That is, the upper ends of the B-phase reactor, C-phase reactor and A-phase reactor are respectively provided with upper terminals, and the lower ends of the B-phase reactor, C-phase reactor and A-phase reactor are respectively provided with lower terminals. terminals, the right side of the upper terminal of the A-phase reactor and the upper terminal of the C-phase reactor are respectively connected with aluminum-magnesium alloy tubes, and the aluminum-magnesium alloy tubes are respectively arranged on the upper ends of several first post insulators, so The aluminum-magnesium alloy tube and the left side of the upper terminal of the B-phase reactor are respectively connected to the current transformer through the copper-aluminum transition equipment clamp, and the current transformer is respectively corresponding and connected to the three circuit breakers. The circuit breaker and the current transformer are respectively uniformly arranged in sequence along the longitudinal direction, and the circuit breaker is respectively connected to the phase C of the bus, the phase B of the bus and the phase A of the bus through an isolating switch, and the phase C of the bus and the phase B of the bus It is arranged on the upper end of the second post insulator in sequence transverse to the busbar A.

In the arrangement structure of dry-type air-core shunt reactors described above, a circuit breaker control box connected to the circuit breaker is provided at the lower end of the circuit breaker, and a cable trench is provided on the ground between the circuit breaker and the current transformer. .

In the arrangement structure of the above-mentioned dry-type air-core shunt reactor, between the lower connection terminal of the C-phase reactor and the lower connection terminal of the B-phase reactor and between the lower connection terminal of the C-phase reactor and the A-phase reactor The lower terminals are respectively connected by steel-cored aluminum hinged wires.

In the arrangement structure of the above-mentioned dry-type hollow shunt reactor, the two ends of the aluminum-magnesium alloy tube are respectively closed by the tube bus bar end-blocking balls.

In the arrangement structure of the above-mentioned dry-type hollow shunt reactor, the tube bus-bar sealing ball is a damping-type tube bus-bar closing ball.

In the arrangement structure of the above-mentioned dry-type air-core shunt reactor, the aluminum-magnesium alloy tubes are respectively arranged on the upper end of the first post insulator through the tube mother fixing hardware.

In the arrangement structure of the above-mentioned dry-type air-core shunt reactor, the aluminum-magnesium alloy tube is respectively connected to the right side of the upper terminal of the A-phase reactor and the upper terminal of the C-phase reactor through the tube mother T-shaped clamp.

In the arrangement structure of the above-mentioned dry-type air-core shunt reactors, the centers of the B-phase reactor, the C-phase reactor and the A-phase reactor are all located on the same straight line.

The utility model has the advantages of simple structure, high connection stability of each component, optimized in-line layout structure, and solves the problem that dry-type air-core reactors occupy a large area. Adapt to the equipment construction site with limited installation space, make full use of the space, take advantage of the compact structure of the straight layout, effectively control the land acquisition area of the substation, and achieve good economic and social benefits.

Description of drawings

Fig. 1 is a schematic structural diagram of a conventional type reactor in the prior art;

Fig. 2 is a structural representation of the utility model;

In the figure, phase B reactor 1, phase C reactor 2, phase A reactor 3, upper terminal 4, lower terminal 5, aluminum-magnesium alloy tube 6, first post insulator 61, current transformer 7, circuit breaker 8. Isolating switch 9, bus C phase 91, bus B phase 92, bus A phase 93, pipe bus end sealing ball 96, pipe mother fixing fitting 97.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

As shown in Figure 2, the dry-type air-core shunt reactor arrangement structure includes B-phase reactor 1, C-phase reactor 2 and A-phase reactor 3 arranged horizontally from left to right, preferably, the B-phase reactor here The center of the reactor 1, the center of the C-phase reactor 2, and the center of the A-phase reactor 3 are all located on the same straight line. It is easy to install and transport, especially suitable for equipment construction sites with limited installation space. The optimized dry-type air-core shunt reactor arrangement structure is reduced from the conventional two sets of reactors with a center distance of 10 meters to 7.5 meters, which can reduce the occupied area by about 25%. invest. At the same time, the upper ends of B-phase reactor 1, C-phase reactor 2 and A-phase reactor 3 are respectively provided with upper terminals 4, and the lower ends of B-phase reactor 1, C-phase reactor 2 and A-phase reactor 3 are respectively provided with There is a lower connection terminal 5, the right side of the upper connection terminal 4 of the A-phase reactor 3 and the upper connection terminal 4 of the C-phase reactor 2 are respectively connected with aluminum-magnesium alloy tubes 6, and the aluminum-magnesium alloy tubes 6 are respectively arranged on several first pillars The upper end of the insulator 61, for example, the aluminum-magnesium alloy tube 6 here is respectively arranged on the upper end of the first post insulator 61 through the tube female fixing hardware 97, and the left side of the upper terminal 4 of the aluminum-magnesium alloy tube 6 and the B-phase reactor 1 is respectively passed through a copper The aluminum transition equipment clamp is connected to the current transformer 7, and the current transformer 7 is connected to the three circuit breakers 8 one by one, and the circuit breaker 8 and the current transformer 7 are arranged uniformly in sequence along the longitudinal direction, and the circuit breaker 8 passes through the The isolating switch 9 is connected to the bus C phase 91, the bus B phase 92 and the bus A phase 93, and the bus C phase 91, the bus B phase 92 and the bus A phase 93 are arranged laterally on the upper end of the second post insulator in sequence.

Preferably, a circuit breaker control box connected to the circuit breaker 8 is provided at the lower end of the circuit breaker 8 , and a cable trench is provided on the ground between the circuit breaker 8 and the current transformer 7 .

Wherein, between the lower connection terminal 5 of the C-phase reactor 2 and the lower connection terminal 5 of the B-phase reactor 1 and between the lower connection terminal 5 of the C-phase reactor 2 and the lower connection terminal 5 of the A-phase reactor 3 The rooms are connected by steel-cored aluminum hinged wires.

The two ends of the aluminum-magnesium alloy tube 6 here are respectively closed by the pipe bus bar end-capping ball 96, which can prevent corona from being generated at the ends of the aluminum-magnesium alloy tube 6 here. Preferably, the tube bus bar sealing ball 96 here is a damping type tube bus bar closing ball.

Preferably, the aluminum-magnesium alloy tube 6 here is connected to the right side of the upper terminal 4 of the A-phase reactor 3 and the upper terminal 4 of the C-phase reactor 2 through the tube mother T-shaped clamp.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although this article uses more B-phase reactor 1, C-phase reactor 2, A-phase reactor 3, upper terminal 4, lower terminal 5, aluminum-magnesium alloy tube 6, first post insulator 61, current transformer 7. Circuit breaker 8, isolating switch 9, bus C phase 91, bus B phase 92, bus A phase 93, tube bus end ball 96, tube female fixing fitting 97 and other terms, but the possibility of using other terms is not excluded . These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is against the spirit of the utility model.

Claims (8)

1. a kind of dry type hollow shunt reactor arrangement, including the B phases reactor (1), the C that are laterally arranged successively from left to right Phase reactor (2) and A phases reactor (3), which is characterized in that B phases reactor (1), C phases reactor (2) and the A phase reactance Device (3) upper end is respectively equipped with upper connecting terminal (4), the B phases reactor (1), C phases reactor (2) and A phases reactor (3) Lower end is respectively equipped with lower connecting terminal (5), upper connecting terminal (4) right side of the A phases reactor (3) and C phases reactor (2) Upper connecting terminal (4) be connected separately with aluminum-magnesium alloy tube (6), the aluminum-magnesium alloy tube (6) is separately positioned on several first Lead to respectively on the left of the upper connecting terminal (4) of support insulator (61) upper end, the aluminum-magnesium alloy tube (6) and B phases reactor (1) Copper-aluminium transition equipment cable clamp is crossed with current transformer (7) to be connected, and the current transformer (7) respectively with three breakers (8) it corresponds and is connected, the breaker (8) and current transformer (7) is uniformly arranged successively along longitudinal direction respectively, described Breaker (8) is connected with busbar C phases (91), busbar B phases (92) with busbar A phases (93) by disconnecting switch (9) respectively, and described Busbar C phases (91), busbar B phases (92) and busbar A phases (93) be laterally successively set on the second support insulator upper end.

2. dry type hollow shunt reactor arrangement according to claim 1, which is characterized in that the breaker (8) lower end is equipped with the breaker control case being connected with breaker (8), and between the breaker (8) and current transformer (7) Ground be equipped with cable duct.

3. dry type hollow shunt reactor arrangement according to claim 2, which is characterized in that the C phase reactance Between the lower connecting terminal (5) of device (2) and the lower connecting terminal (5) of B phases reactor (1) and the lower wiring of C phases reactor (2) Line is cut with scissors between terminal (5) and the lower connecting terminal (5) of A phases reactor (3) by steel-core-aluminium respectively to be connected.

4. dry type hollow shunt reactor arrangement according to claim 1 or 2 or 3, which is characterized in that the aluminium Magnesium-alloy tube (6) both ends block ball (96) by pipe busbar respectively and close.

5. dry type hollow shunt reactor arrangement according to claim 4, which is characterized in that the pipe busbar envelope It is that damp type pipe busbar blocks ball to hold ball (96).

6. dry type hollow shunt reactor arrangement according to claim 5, which is characterized in that the almag It manages (6) and gold utensil (97) setting is fixed in the first support insulator (61) upper end by pipe mother respectively.

7. dry type hollow shunt reactor arrangement according to claim 5, which is characterized in that the almag Pipe (6) on upper connecting terminal (4) right side of pipe mother's T-type wire clamp and A phases reactor (3) and C phases reactor (2) respectively by connecing Line terminals (4) are connected.

8. dry type hollow shunt reactor arrangement according to claim 1, which is characterized in that the B phase reactance The center at the center of device (1), the center of C phases reactor (2) and A phases reactor (3) is respectively positioned on same straight line.