JPH09308030A - Bus-bar disconnector apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the height of the chamber of a bus-bar disconnector apparatus and reduce the size by a method wherein bus-bars of respective phases are laid horizontally in parallel with each other and disconnectors are placed horizontally beneath the respective bus-bars in directions perpendicular to the respective bus-bars. SOLUTION: Fixed contactors 49 are electrically connected to conductors 46-48 and placed beneath bus-bars 38-40 and supported by connection terminals 45. Movable contactors 50 are electrically connected to the bus-bars 38-40 with connection conductors 51-53 and can be connected to and disconnected from the fixed contactors 49 and placed beneath the bus-bars 38-40 and supported by a partition plate 34. The disconnectors 54-56 of the respective phases are composed of the fixed contactors 49 and the movable contactors 50. The disconnectors 54-56 are so provided as to have their fixed conductors 49 and the movable contactors 50 on horizontal straight lines in directions perpendicular to the longitudinal directions of the bus-bars 38-40 and the movable contactors 50 are moved horizontally for connection and disconnection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a busbar disconnector unit containing a disconnector connected between a busbar and another device.

[0002]

2. Description of the Related Art FIG. 5 is a sectional view showing the structure of a conventional busbar disconnector unit. In FIG. 5, three-phase busbars 2a, 2b, 2c are arranged in a container 1 in which an insulating gas is sealed, and the busbars 2a-2c are insulated and supported by the insulators 3a, 3b, 3c. The fixed contacts 4a of the disconnecting switch 4 connected to the respective busbars 2a to 2c are arranged below the respective busbars 2a to 2c in the direction of the plane of the drawing, and the movable contacts 4b are perpendicular to the fixed contacts 4a. It is arranged below the fixed contactor 4a in the direction. Then, each movable contactor 4b is rotated in the clockwise direction as shown by an arrow 6 by the operation mechanism 5 to move each fixed contactor 4b.
Moves away from a. Furthermore, each movable contactor 4b has a connection terminal 7
It is connected to other devices such as the switch unit 8 adjacent to the lower part via the. In the above configuration, in the case of a device equivalent to 70 KV, the height of the insulators 3a to 3c is 100 mm, and the distance between the insulators 3a and 3c and the rotation center A of the movable contactor 4b is about 500 mm. Therefore, the height of the container 1 is about 900 to 1000 mm.

[0003]

Since the conventional busbar disconnector unit is constructed as described above, there is a problem that the height of the container becomes high because both contacts of the disconnector are arranged vertically. there were.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a busbar disconnector unit capable of reducing the height of a container.

[0005]

According to another aspect of the present invention, there is provided a busbar disconnector unit according to the first aspect of the invention, wherein each phase busbar of three phases penetrates a first container filled with an insulating gas and is arranged in the first container. The first contactor of each phase disconnector is connected to each phase busbar, and the second contactor of each phase disconnector is connected to the side of the second container adjacent to the lower part of the first container. In a busbar disconnector unit that is led out through a terminal, the phase busbars are arranged in parallel in the horizontal direction, and the first contactor and the second contactor are long sides of the phasebusbars. The phase disconnectors are arranged in a horizontal direction below the phase buses in a direction orthogonal to the direction, and the connection terminals are arranged at the bottom of the first container and led out to the second container. It is configured to do.

In the busbar disconnector unit according to a second aspect of the present invention, each of the phase disconnectors is arranged such that either one of the two contactors arranged on a straight line moves on the straight line to come into contact with or separate from the contactor. .

In the busbar disconnector unit according to a third aspect of the present invention, each phase busbar is removable in the first container.
The container can be taken out of the first container through an opening provided in the upper part of the container.

In the busbar disconnector unit according to a fourth aspect of the present invention, each phase busbar is integrated by an insulating member so that it can be attached and detached.

In the busbar disconnector unit according to the invention of claim 5, a first opening provided at the bottom of the first container is provided with a second opening for communicating between the first container and the second container. The partition board is closed, the busbar disconnector is supported by the partition board, and the second opening is closed by the connection terminal.

According to a sixth aspect of the present invention, there is provided a busbar disconnector unit in which one contactor of the busbar disconnector is fixed to a partition plate and the other contactor is secured to the partition plate via a connection terminal. .

In the busbar disconnector unit according to the invention of claim 7, the partition plate has substantially the same size as the bottom surface of the first container,
It is configured to be separable from the first container.

In the busbar disconnector unit according to the invention of claim 8, the connecting terminal is formed of an oval-shaped insulating member integrally formed for three phases.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. FIG. 1 is a single wire connection diagram showing a main part of the configuration of a general gas insulated switchgear. In FIG. 1, 9 is a bus bar, 10 is a lead-in circuit, 11 is a current transformer, 12 is an opening / closing unit, and a lead-in terminal 13, a disconnector 14 and a circuit breaker 1 are provided.
5 is connected in series, and the lightning arrester 16 and the ground switches 17 to 19 are further connected to the ground. Reference numeral 20 denotes a busbar disconnector unit, and a disconnector 21 is connected between the busbar 9 and the switching unit 12. 22 is a transformer, 23 is a drawing circuit, 24 is a current transformer, and 25 is a switching unit. The drawing circuit 26 and the circuit breaker 27 are connected in series, and the grounding switches 28 and 29 are connected to the ground. ing. A busbar disconnector unit 30 connects a disconnector 31 between the busbar 9 and the switching unit 25.

In the above structure, the electric power received from the pull-in circuit 10 is the switching unit 12-bus unit 20.
-Bus 9-Bus unit 30-Switching unit 25-Supplying voltage to the transformer 22 via the drawing circuit 25.

FIG. 2 is a sectional view showing the structure of the first embodiment. Reference numeral 32 denotes an opening / closing unit, which is provided inside the container 33 having an opening 33a at the top thereof and is provided with the opening / closing unit 12 or 2 shown in FIG.
It accommodates 5 components. Reference numeral 34 denotes a flat partition plate arranged so as to close the opening 33a, and has an opening 34a communicating with the opening 33a. Reference numeral 35 denotes a body whose bottom face arranged on the partition plate 34 has substantially the same size as that of the partition plate 34, and the upper opening 35a is closed by a lid 36. The opening 35a is of a size that allows each of the phase buses 38 to 40 described below to be taken out. The body 35 and the lid 36 form a container 37, and an insulating gas such as SF ₆ is sealed inside. Reference numerals 38 to 40 denote three-phase busbars that pass through the container 36 in parallel with the horizontal direction, and are insulated and supported by insulating spacers 41 and 42 that are integrated with the container 37 by insulating members.
43 and 44 are connecting devices, which are bus bars 38 to 40 in the container 37.
Is removable.

Reference numeral 45 denotes a connection terminal integrated with an oval-shaped insulating member arranged so as to close the opening 34a. The conductors 46 to 48 penetrating the insulating member are arranged on the straight lines in the longitudinal direction of the buses 38 to 40. are doing. 49 is each conductor 46-48
The fixed contactor is electrically connected to the busbars 38 to 40 and is supported by the connection terminal 45. Reference numeral 50 denotes a movable contactor that is electrically connected to each of the busbars 38 to 40 by connecting conductors 51 to 53 and is movable to and from the fixed contactor 49. I support you. The fixed contactor 49 and the movable contactor 50 constitute the disconnectors 54 to 56 for each phase. And each disconnector 5
4-56 arrange | position the fixed contactor 49 and the movable contactor 50 so that it may become on the straight line of the horizontal direction orthogonal to the longitudinal direction of each busbar 38-40, and the movable contactor 50 may move horizontally and contact | connect. Let go. 57 to 59 are opening / closing unit 32 and connection terminal 4
5 is a connection conductor for connecting with 5. Although the fixed contact 49 is supported by the connection terminal 45 in the above configuration,
The movable contact 50 is supported by the connection terminal 45, and the fixed contact 4
9 may be supported by the partition plate 34.

As described above, by disposing the disconnectors 54 to 56 below the respective bus bars 38 to 40 in the direction orthogonal to the respective bus bars 38 to 40 arranged in parallel to the horizontal direction, the container 3 can be obtained.
The height of 7 can be lowered. Furthermore, bus 38-
Since the 40 and the disconnecting switches 54 to 56 are arranged so as to be orthogonal to each other, the electromagnetic force based on the transient current acting between the current-carrying parts is reduced, so that the contacting part of the disconnecting switch can be optimized and the operating device can be downsized. Can be realized.

[0018]

According to the invention of claim 1, since each phase busbar is arranged in parallel to the horizontal direction, and the disconnector is horizontally arranged below each phase busbar in the direction orthogonal to each phase busbar, The height of the container can be reduced to reduce the size.

According to the second aspect of the present invention, since one of the contact pieces moves on a straight line to contact and separate the other contact piece, the height of the container can be reduced.

According to the third aspect of the present invention, since each phase busbar is made removable in the container and can be taken out from the upper part of the container, assembly and maintenance can be facilitated.

According to the fourth aspect of the present invention, since the respective phase buses are integrated by the insulating member and can be attached and detached, the assembling can be facilitated.

According to the invention of claim 5, since the busbar disconnector is supported by the partition plate, the busbar disconnector can be assembled in the container in an assembled state, so that the assembling work becomes easy.

According to the invention of claim 6, one of the contacts is fixed to the partition plate, and the other contact is fixed to the partition plate through the connection terminal. Therefore, the busbar disconnector and the connection terminal are assembled. Since it can be incorporated into the first container, the assembling work becomes easy.

According to the invention of claim 7, since the partition plate has substantially the same size as the bottom surface of the first container, the busbar disconnector and the connecting terminal can be assembled in the first container in an assembled state. Assembling work becomes easy.

According to the invention of claim 8, since the three phases of the connection terminals are integrated, the assembling work becomes easy.

[Brief description of drawings]

FIG. 1 is a single wire connection diagram showing a main part of the configuration of a general gas insulated switchgear.

FIG. 2 is a cross-sectional view showing the configuration of the first embodiment.

3 is a partially cutaway side view taken along the line II-II of FIG.

FIG. 4 is a side view showing a main part of FIG.

FIG. 5 is a cross-sectional view showing a conventional busbar disconnector unit.

[Explanation of symbols]

33, 37 container, 33a, 34a opening, 34 partition plate, 38-40 busbar, 45 connection terminal, 49 fixed contactor, 50 movable contactor, 54-56 disconnector.

Claims (8)

[Claims] 1. A first container filled with an insulating gas is penetrated by each phase bus bar of three phases, and a first contact of each phase disconnector disposed in the first container is connected to each phase bus bar. Connect each,
In the busbar disconnector unit, which is configured to be led out from the second contactor of each phase disconnector via the connection terminal to the second container side adjacent to the lower part of the first container, each phase busbar is horizontally The first contactor and the second contactor are arranged parallel to each other so that they are horizontal below the respective phase busbars in a direction orthogonal to the longitudinal direction of the respective phase busbars. A busbar disconnector unit, characterized in that a phase disconnector is arranged and the connection terminal is arranged at the bottom of the first container and led out to the second container. 2. The busbar disconnector according to claim 1, wherein each of the phase disconnectors is configured such that one of both contacts arranged on a straight line moves on the straight line to come into contact with and separate from the contactor. unit. 3. Each phase bus bar is attachable / detachable in the first container, and can be taken out to the outside of the first container through an opening provided in the upper part of the first container. The busbar disconnector unit according to claim 1 or 2. 4. The busbar disconnector unit according to claim 3, wherein each of the phase busbars is integrated with an insulating member so as to be detachable. 5. A busbar disconnector, wherein a first opening provided at the bottom of the first container is closed by a partition plate provided with a second opening communicating between the first container and the second container. The busbar disconnector unit according to any one of claims 1 to 4, characterized in that the partition plate is supported by the partition plate and the second opening is closed by a connection terminal. 6. The busbar disconnector according to claim 5, wherein one contactor of the busbar disconnector is fixed to the partition plate, and the other contactor is fixed to the partition plate via a connection terminal. unit. 7. The busbar disconnector unit according to claim 5 or 6, wherein the partition plate has substantially the same size as the bottom surface of the first container and is configured to be separable from the first container. . 8. The busbar disconnector unit according to claim 1, wherein the connection terminal is formed of an oval-shaped insulating member integrally forming three phases.