JPS63209409A - Gas insulated switchgear - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a gas insulated switchgear in which the arrangement of a busbar side disconnector is improved.

(Prior Art) Generally, a gas insulated switchgear is constructed by interconnecting devices in which live parts are insulated and housed in a container filled with an insulating gas such as SF or gas.

A typical single-line connection diagram is shown in FIG. 4, and its configuration is shown in FIG. 5.

That is, the busbars 1 and 2 arranged vertically above and below are connected to one side of the circuit breaker 5 via the busbar side disconnectors 3 and 4. A bus-side grounding device 6 is connected between the bus-side disconnectors 3 and 4 and the circuit breaker 5.

On the other hand, on the other side of the circuit breaker 5, there is a current transformer 7, which is a line side device.
Track side grounding device 8. Track side disconnector 9, track side grounding bag [1
10 and cable head 11 are connected.

Further, the disconnecting section 3a of the bus-side disconnector 3 is housed within the bus 1, and the operating device 3b is fixed to the upper part of the bus 11&1. The disconnecting section 4a of the busbar-side disconnector 4 is housed within the busbar 2, and the operating device ¥4b is fixed to the lower part of the busbar 2. Further, the operating device 6b of the busbar side grounding device 6 is fixed to the alternating circuit breaker 5 side.

However, in the gas insulated switchgear shown in FIG.
4b, the height of the gas insulated switchgear was high.

Moreover, since the busbar side disconnector operating devices 3b, 4b and the busbar side disconnectors [6b] are scattered, a lot of time and cost are required for maintenance and inspection.

(Problems to be Solved by the Invention) As described above, in the conventional gas insulated switchgear, the operation devices for the busbar side disconnector and the grounding device were arranged in a scattered manner.
It was large and difficult to maintain and inspect.

The present invention was made to eliminate the above problems, and
It is an object of the present invention to provide a gas insulated switchgear which is small in size and whose operating device is easy to maintain and inspect.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, in the present invention, the drive section of the busbar side disconnector and the busbar side grounding device are housed in the same connection container separated from the busbar by gas. , both operating devices are fixed to the side of the connection container.

(Function) As a result, it is possible to provide a gas insulated switchgear that is small in size and easy to maintain and inspect the operating devices without having the operating devices scattered all over the place.

(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2. Components that are the same as or equivalent to those shown in FIG. 5 will be described with the same reference numerals.

A double bus bar is installed on one side of the circuit breaker 5, and a current transformer 7 is installed on the other side. A track-side grounding device 8, a track-side disconnector 9, a track-side grounding device 10, and a cable head 11 are connected as track-side equipment. The busbars 12, 13 and the circuit breaker 5 are connected via busbar-side disconnectors 14, 15 and a busbar-side grounding device 16, which are configured in the same container.

Here, the configurations of the busbar 12.13, the busbar-side disconnector 14.15, and the busbar-side grounding device 16 will be explained in detail using FIG. 2. The busbars 12 and 13 arranged vertically in parallel are connected by a connection container 17. Then, the bus bar 12 and the connection container 17
and an insulating spacer 18 between the bus bar 13 and the connection container 17.
．． 19 are interposed respectively, and the gas is divided into three.

Further, a disconnection fixing electrode 20 is connected to the busbar conductor 12a inserted in the busbar 12 in insulation, and a disconnection fixing electrode 21 is connected to the busbar conductor 13a inserted in the busbar 13 in insulation.

Furthermore, inside the connection container 17, there is an insulating spacer 18 on the negative side.
A conductor 22 is fixedly supported on the insulating spacer 19 and extends vertically downward, and a conductor 23 is fixedly supported on the insulating spacer 19 on the negative side and extends vertically upward. The conductor 22 and the conductor 23 are arranged on the same vertical axis, and the free ends of the two groove bodies 22 and 23 are connected via a connecting conductor 24 which can be attached or detached using a bolt or the like. A conductor 25, the other end of which is connected to the circuit breaker, is detachably fixed to the right side of the connecting conductor 24.

Thereby, the conductors 22, 23 and 25 are electrically and mechanically connected via the connecting conductor 24. Further, a grounding fixed electrode 26 is fixed to the left side of the connecting conductor 24.

Inside the conductor 22 is a rack 27 that is vertically movable.
Similarly, a rack 28, which is vertically movable, is stored inside the conductor 23. Further, on the busbar side of the rack 27, a new fixed electrode 20 is mounted, which moves up and down within the insulating spacer 18 as the rack 27 moves, and is connected to the busbar conductor 12a.
The movable disconnecting contact 29 that comes into contact with and separates from the contact member 29 is fixed. Then, the disconnection fixed electrode 20 and the disconnection movable contact 29 form the disconnection section 30 of the busbar side disconnector 14.

On the other hand, the bus conductor 1 is placed on the bus bar 13 side of the rack 28 by moving vertically within the insulating spacer 19 as the rack 28 moves.
The disconnection movable contact 31 that comes into contact with and separates from the disconnection fixed ffi pole 21 connected to the disconnection fixed ffi pole 3a is fixed. Then, the disconnection fixed electrode 21
The disconnection section 3 of the busbar side disconnector 15 is connected to the disconnection movable contact 31.
2 is formed.

Furthermore, an operating device 33 for the bus-side disconnector 14 and an operating device 34 for the bus-side disconnector 15 are fixed to the upper and lower left sides of the connection container 17. Further, an operating device 35 for the busbar side grounding device 16 is fixed to the left central portion of the connection container 17. A rotatable insulating iron 36 is fixed to the operating device 33 within a horizontal shaft. A rotatable binion 37 that engages with the rack 27 is fixed to the end of the insulating iron 36 on the side opposite to the operating device 33 . Similarly, a rotatable insulating rod 38 is fixed within the horizontal axis of the operating device 2234, and a rotatable pinion 39 is fixed to the side of the insulating rod 38 opposite to the operating device 34, which engages with the rack 18 and is rotatable. Further, a movable ground contact 40 is fixed to the operating device 35 so as to be movable within a horizontal axis and to come into contact with and separate from the fixed ground electrode 26 .

Next, the effects of the configuration of this embodiment will be explained. Opening/closing of the bus-bar side disconnector 14 is performed by transmitting the driving force of the operating device 33 to the disconnecting movable contact 29 via a driving section composed of an insulating rod 36, a pinion 37, and a rack 27. That is, as the insulating rod 36 rotates due to the rotational driving force of the operating device 33, the insulating rod 3
6 rotates. This results in
The rack 27 that meshes with the pinion 37 moves vertically downward. Then, the disconnection movable contact 29 fixed to the rack 27 moves vertically up and down, and the disconnection fixed contact t420 and #1
! By separating them, the busbar side disconnector 14 is opened and closed. Note that the busbar side disconnector 15 can also be opened and closed in the same manner.

Opening and closing of the busbar side grounding device 16 is performed by transmitting the driving force of the operating device 35 to the movable grounding contact 40 which also serves as a driving section. That is, the movable grounding contact 40 moves in the horizontal direction due to the horizontal driving force of the operating device 35. Then, the movable grounding contact 40 contacts and separates from the fixed grounding electrode 26, thereby opening and closing the bus-side grounding device 16.

In this embodiment, the busbar side disconnector 1 is installed in the connection container 17.
．． 4.15 and ISl of the busbar side grounding device 16! The moving parts are housed together, and their operating devices 33, 34 and 35 are provided on the side of the connection container 17. Therefore, unlike in the past, operating devices are not scattered, so the gas insulated switchgear can be made smaller.

In addition, since the operating devices 33, 34 and 35 are placed close together, the operating devices! Maintenance and inspection of fi33, 34 and 35 is easy.

Then, since the busbar 12.13 and the connection container 17 are gas-separated by the insulating spacers is and 19, and the disconnection parts 30.32 are placed inside the busbar 12.13, the other busbars and the busbar-side disconnectors are stopped. Maintenance and inspection of one busbar and the busbar-side disconnect switch can be performed without any trouble.

In this embodiment, a double bus type gas insulated switchgear has been described, but the present invention can also be applied to a single bus type gas insulated switchgear as shown in FIG.

Furthermore, the disconnecting section can be housed within the connection container, and the present invention may be applied to three-phase equipment. Furthermore, the present invention can also be applied when the generatrix is arranged in a horizontal plane.

〔Effect of the invention〕

As explained above, in the present invention, the driving parts of the bus-side disconnect switch and the bus-side grounding device are housed in the same connection container separated from the busbar by gas, and the single-car operating device is fixed to the side of the connection container. Therefore, it is possible to provide a gas insulated switchgear which is small in size and whose operating device is easy to maintain and inspect.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a gas insulated switchgear according to an embodiment of the present invention, Fig. 2 is a detailed cross-sectional view of the bus bar, bus-side disconnector, and bus-side grounding device shown in Fig. A schematic diagram of a gas insulated switchgear showing another embodiment of the invention, FIG. 4 is a single line diagram of a general double-bus type gas insulated switchgear, and FIG. 5 is a schematic diagram showing a conventional gas insulated switchgear. It is. 5... Circuit breaker, 7... Current transformer, 8...
... Track side grounding device, 9... Track side disconnector, 10
... Track side grounding device, 11... Cable head, 12, 13... Bus bar, 14.15...
・Busbar side new circuit device, 16...Busbar side grounding device, 17
... Connection container, 18, 19 ... Insulating spacer, 2
0.21... Disconnection IMI constant electrode electrode 2, 23... Conductor, 24... Connection conductor, 25... Conductor,
26...Grounding fixed electrode, 27, 28.
... Rack, 29.31 ... Disconnection movable contact, 30, 32 ... Disconnection section, 33.34.
35... Operating device, 36, 38... Insulating rod,
37.39...Pinion. 40... Ground movable contact. Agent Patent Attorney Noriyuki Chika Yudo Hirofumi MitsumataFigure 3Figure 4

Claims (1)

[Claims] In a gas-insulated switchgear in which one side of the busbar and the circuit breaker are connected via a busbar-side disconnect switch and a busbar-side grounding device, and the other side of the circuit breaker is connected to track-side equipment, the busbar-side disconnector and the busbar The drive unit of the side grounding device is housed in the same connection container gas-separated from the busbar, and the busbar side disconnector and the operating device of the busbar side grounding device are fixed to the side surface of the connection container. Gas insulated switchgear.