JPS60183909A - Gas insulted switching device - 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] [Field of application of the invention] The present invention relates to a gas insulated switchgear.

[Background of the invention]

FIG. 1 shows a typical skeleton of a gas-insulated switchgear with an instrument transformer. The other end of the breaker 4, which has one end connected to the live bus 1, is connected to a cable head 9 via a disconnector 7.

Earthing switches 3, 5 and 8 are connected to both ends of the breaker 4 and to the cable head 9 side of the disconnector 7;
A potential transformer 6 is connected between the disconnector 4 and the disconnector 7.

An example of an O'fl gas insulated switchgear constructed according to this skeleton is shown in FIG. As shown in the figure, the breaking section 4a of the enclosure 4 is arranged vertically in a sealed container 30, and both terminals are led out from one side of the sealed container 30.

Of these, the F-j5 Q and "M" connectors are connected to a disconnector 7 configured in the body tube 10, and are further connected to the cable head 9. Between this upper 'jfif connector and the disconnector 7 The earthing switch 5 and the voltage transformer 6 are connected together, and the earthing switch 8 is connected between the disconnector 7 and the cable pen 9. On the other hand, the lower part of the breaker 4 The terminals are connected to the main bus l through all the disconnectors 2, and the main bus 1 has an operating device for operating the disconnector 2 connected to the main bus 1, and the disconnector 4 and the disconnector A grounding switch 3 is connected between the ground switch 2 and the ground switch 2.

In the gas insulated switchgear configured in this way, as is clear from the figure, the upper conductor pipe IO is connected to the lower disconnector 2.
The cable has a length that exceeds the main bus 1 and is connected to the cable head 9, and the cable is connected to the main bus 1? It is suspended on the anti-breaker side of tM1. For this reason, the conductor tube 10 becomes longer,
The total occupied area becomes larger by t.

In order to reduce the overall occupied area, the inventors have proposed a gas insulated switchgear having the following structure. That is, as shown in FIG. 3, openings facing each other in the radial direction are provided on the upper side of the sealed container 30, and one 1'iM element of the shear disconnector 4 and the cable head 9 are connected through this opening. and a sealed container 3 connected to the instrument transformer 6 and facing the opening on the cable head 9 side.
One terminal of the circuit breaker 4 is fully connected to the main bus bars 1a and 1b through an opening provided on the lower side of the circuit breaker 4. Then, make the main bus lines Gold 2 city bus lines 1a and lb, and the main If lines 1a of these two cities,
Disconnectors 2a, 2bi connected to lb, these main busbars 1a
, lb is operated using an operating device 11 provided on the front of the lb. In addition, in the same figure, 20 is a device including a main bus la, a disconnector 2a, and 2
d is a device (4, 12) including the main bus 1b1 disconnector 2b;
13 is an insulating spacer provided in the opening, 13 is a breaker operating section, and 14 is a current transformer.

Although the gas trench switchgear constructed in this way has a smaller overall occupied area, the main bus lines 1a and 1bK of 2·π
S-connected i, 1 [operation of one unit of equipment 2 a, 2 bi'
511, so the main busbars 1a and lb can be inspected and repaired in the event of an accident, and the disconnectors 2a and 2b can be inspected and maintained.
Main bus bar 1a including a and 2b.

Maintenance and inspection of 1b was troublesome.

[Purpose of the invention]

The present invention has been made in view of the above points, and an object thereof is to provide a gas-insulated switchgear that facilitates maintenance and inspection of each main bus bar including a disconnector.

[Summary of the invention]

That is, in the present invention, one terminal of a vertical breaker whose entire breaker part is housed in a cylindrical sealed container is connected to the metal main bus bar, the other terminal is connected to the cable head, and the curved main bus bar is connected to this main bus bar. In the gas insulated switchgear 4 which has an operating device for operating a disconnect switch, the main bus bar metal is doubled, and the operating device is provided for each main bus bar in front of these main bus bars. This is a feature of the system, whereby the new circuit for each main busbar is operated by an operating device provided for each main busbar.

[Embodiments of the invention]

The present invention will be explained below based on the illustrated embodiments. An embodiment of the present invention is shown in FIGS. 4-6.

It should be noted that the same parts as the conventional one have the same reference numerals, so the explanation will be omitted. In this example, the main bus bar 1 is doubled, and the disconnect switch 2a for the main bus bar 1a, lb is provided in front of the main bus bar 1a, lb.

2bi main bus line 1a, operating device 11a operated for each lb.

11b was provided. By doing this, each main bus 1
Disconnectors 2a and 2b for each main bus line la and lb are operated by operation devices 11a and llb provided for each main bus line la and lb, so that disconnectors 2a and 2b for each main bus line la and lb
It is possible to obtain gas-insulated switching & i j2 that facilitates maintenance and inspection.

In other words, set main If1 line 1 total 2 time 1a, lb, disconnect switch 2
The operating device 11a is provided in front of the main bus 1a which is fully boiled, and the operating device 11a is provided in the front of the main bus 1b to which the circuit device 2b is connected.
1bi was set up. By doing this, if an accident occurs on the P main bus 1a side, all you have to do is operate the disconnector 2a connected to this main bus 1a with the full operating device 11a, or open it, and perform inspection and repair. , main bus 1 including disconnector 2af
Repair and inspection of parts a can be done easily, and parts replacement etc. can be done easily. In this case, it goes without saying that the operating device 11b is operated to close the disconnector 2b and keep the main bus 1b alive. On the contrary, if an accident occurs on the main bus lb side, all you have to do is operate the disconnector 2b-i, which is connected to the main bus 1b, with the operating device 11b, and then inspect and repair it. The main bus bar 1b including the disconnector 2b can be repaired and inspected easily, and parts can be easily replaced.

In the case of C, it goes without saying that the operator 11ai should be operated to close the disconnector 2a, and the main ft) 77M1ay should be fully utilized.

Another embodiment of the invention is shown in FIGS. 7 and 8. In the non-embodiment, the operating device 11a is fixed 11! (The operating device 11b is not shown).

By doing this, the operating device 11a is rotated 1
1Ql l 5 allows it to rotate like 11a', making it easier to perform maintenance and inspection of the main bus 1a, including the disconnector 2a (!-), making it easier to perform maintenance and inspection than in the case described above. Although only the main bus line la side has been illustrated and described, the main bus line lb side can be similarly implemented and the same effects can be achieved.

〔Effect of the invention〕

As described above, the present invention provides a P1 disconnector in which the disconnector for each busbar is operated by an operating device provided for each busbar, making it easy to maintain and inspect each main busbar. Cas insulated switchgear (C-
Obtainable.

[Brief explanation of drawings]

The m1 diagram is a skeleton diagram of the cass mli edge opening/closing device 1・t,
FIG. 2 is a front view of a conventional gas-insulated switchgear 4, FIG. 3 is a front view of a reduced-sized gas-insulated switchgear to which an unexploded F9'J is applied, and FIG. 4 is a front view of a gas-insulated switchgear of the present invention. The front view of the embodiment L@5 is a skeleton diagram of one embodiment of the gas insulated switchgear of the present invention, and Figure 6 is the side view of an embodiment of the gas insulated switchgear of the present invention. 8 is a regular plane view of another embodiment 1j of the insulated switchgear 4 of the present invention, and FIG. 8 is a -F of FIG. 7.
It is a front view. 1a, 1b...Orinagi 2a, 2b...Disconnector, 2c
. 2d... Device including all main busbars and road equipment, 3...
Earthing switch, 4... Breaker, 4a... Breaking part,
5... Earthing switch, 6... Instrument transformer, 7...
Disconnector, end...Earth switch, 9...Cable head,
lla, llb... Operating device, 12... Insulating spacer, 13... Breaking part operating section, 14... Current transformer, 15
...Operator rotation axis. Figure 1 f72 Figure whistle 3/. /4 /3 3 vlJ-Figure 13 j f75Figure 6

Claims (1)

[Scope of Claims] 1. A vertical shield housing in which the entire interrupting part is housed in a cylindrical sealed container, one terminal of the container is connected to the main busbar of the metal, and the other terminal is connected to the cable head, and In a gas-insulated switchgear in which the main bus bar has an operating device for operating a disconnector connected to the main bus bar, the main bus bar has two claws, and each of the main bus bars has a A gas insulated switchgear 4゜2 characterized in that a 74iJ operating device is provided in the gas insulated switchgear 4゜2. Gas insulated switchgear.