JPS5911705A - Gas insulated 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] [Technical Field of the Invention] The present invention is a method that uses insulating I11 scraps such as S [6 scraps etc. and covers them in a gas insulated switchgear ηa-), and 1'! Item i relates to a cass insulation switchgear used in multi-bus type substations, switchyards, etc.

[Technical Background of the Invention and (Problem 1) In substations or switchyards that are installed around urban areas or coastal areas, there are many reasons such as land access and salt damage countermeasures.
Gas insulated enclosures made with insulating media such as S60,000 are used to cover the electrical equipment that constitutes substations and switchyards.And, this divine gas insulated switchgear is ideal for urban areas. With the increasing demand for electric power in Japan, higher voltage and larger capacity are being used.Therefore, there is a demand for smaller scales, higher reliability, and simpler maintenance. Alternatively, other necessary equipment in the disconnect switch is arranged three-dimensionally, and the distance between each equipment phase U is narrowed, thereby significantly reducing the site area.

The general structure of such a gas insulated switchgear will be explained with reference to the middle line connection diagram in FIG. 1 and the layout diagrams in FIGS. 2 and 3.

That is, FIG. 1 shows a single line connection diagram for a double bus line 13 type line, and the main bus lines B U S 1 , B LJ S
2 are each provided with a disconnector DS1.1)S2, which are connected to the breaker CB.
h' Line disconnector l) Connected to the C line grounding device @E S and tour pull connection C11 via S3.

This kind of median line connection diagram has been known for some time (as shown in Figure 2).
',>Mono de-). The cutting device 1 is installed in a vertical position relative to the stationary device 1, and the cutting device 1 has the following characteristics:
-(Parallel to the -F part branch [1 out part 2 and I part branch 1 out part ζ 3 are installed ()). -Ii
, It,
, one (connected, and this connection bus 8 is connected to C, disconnector 1, 1,
The partial branch 11 is connected to the breaker 1 through the outlet 3.

The upper branch outlet part 2 of the disconnector 1 is connected to the disconnector 9 and σ18.
It is connected to the °C cable connection part 11 through the ground device 10, but when installing the cable connection part 11, 1. II 1 line 4.
In order to avoid [) and arrange it with (), use the connection bus 12 (
...Disconnector 1 and disconnector 9 are connected.

However, in the conventional gas insulated switchgear as shown in FIG.
Since it is necessary to avoid the main bus 1.5, Il and two-stage connection buses 8 and 12 are required, which has the disadvantage that the installation dimension W1 of the equipment becomes very large. Since connection 1?] wires B and 12 had to be used, the configuration became complex and the assembly process required a large number of parts.Furthermore, connection busbars 8 and 12 were Due to layer layout and 9 parts (1), the height of the equipment becomes high, and in order to maintain earthquake resistance f1, the equipment on the 1st floor must be supported with a strong support frame, which requires a large number of materials. In addition, when inspecting the equipment, when inspecting the equipment, the 1st floor (-) poses a risk of falling. I (I, something desirable (゛hanaka-) Iko.

In order to improve this and shorten the connection 1u line 8.12,
An arrangement configuration as shown in FIG. 3 has also been proposed.

III I, this conventional type (in the container of the breaker 21)
33 is branched into two, and this branched current-carrying conductor 23a,
2311 is provided on one side of the breaker container and is led out from the branch outlet portions 24.a and 2/lb. The main PJ line 25.
26 are respectively embodied as disconnectors and 7.2E<.On the other hand, the current carrying conductor 23 (z is The branch 11 provided on the + side of the branch a outlet portions 2/Ia and 2/Ib
This branch 1-1 is led out to the output section 2/IC, and this branch 1-1 output section 24
0, the horn connection 30 is removed via the disconnector 2/l.

Although this type of conventional insulation insulation/sealing method has achieved a reduction in the size of the installation area, it is difficult to place the equipment on one side of the breaker 21. If you do that, you won't be able to do it.
The height of the equipment [(1 is very crowded, the seismic performance deteriorates significantly, and there is a vacancy in that the support frame, etc. to prevent this is increased in size) 9 [Object of the Invention] The present invention has been proposed to solve the drawbacks of the conventional gas insulated switchgear as described above. The object of the present invention is to provide a gas insulated switchgear which reduces the number of U and eight devices, eliminates the need for a connection bus bar connecting between eight devices, reduces the number of supporting frames to one person, or is miniaturized.

1 Overview of Komei] The gas-insulated switchgear of this company is arranged vertically.
) Separate the branch outlet of the current-carrying conductor installed in the disconnection container () into the main bus side, the couple connection side, and both sides of the C container LJ '7
- In terms of arrangement, the disconnector, the main bus bar connected to it, the group connection part, etc. are arranged efficiently.

Embodiment 1 of 1 Komyo An embodiment of the present invention will be explained in detail based on FIG. 4 using base/V.

In this embodiment, the cylinder 31 is arranged such that the axis of the container is perpendicular to the installation surface. Current-carrying conductors 33.33G led out from both ends of the circuit breaker 31 are arranged.
It is branched into. This branched IC conductor 33
a and 33b are installed on the same side of the container of the destroyer 31 in the direction perpendicular to the container axis and at different positions along the container axis. Part 34
a, 31. This branch L) Exit part 3
71a, 37'11. + (11 integrated disconnectors 37, 38, etc.)
It is connected to main busbars 35 and 36 arranged on parallel planes such as 1111 of the destroyer 31. In addition, the destruction part 32
The current-carrying conductor 33G led out from the other end is the branch outlet portion 34a.

34b, it is led out from a branch [1 outlet 3/ci) x provided on the opposite side of the container axis of the breaker 31. The outlet 3/IC of the branch 11 is connected to the couple connection 433 via a disconnector/IO and a grounding device 41 arranged perpendicular to the axis of the breaker vessel. This cable connection portion 43 is supported by a support pedestal 42 on the 1111 shell 11 of the I5 disconnection container.

In the insulated switchgear of this embodiment, which covers the configuration like this, the branches [l outgoing portions 3'la, 3/Ib, 3/IC] provided in the breaker 31 are separated on both sides of the container. By arranging the main busbar 35, 330 and the cable connection part /13, it is possible to efficiently arrange the main busbar 35, 330 and the cable connection part /13 without using the connection busbar.
1 is also supported by the branch 34c and the Kunol connecting part support frame/12, making it highly stable.

However, the present invention is not limited to the embodiment shown in FIG. 4, and the neck arrangement as shown in FIG. 5 is also possible.

That is, similar to the embodiment of FIG. 4, the L/ptlJi device 31
On the same side of the container, there is a branch outlet L3 'I a , 34 b /J<3Q connected to the X busbar 35.36.
LJ ratt, the branch outlet part 3/IC is installed on the soil part on the side opposite to the solenoid (J, C, J, Cable connection part 4J3 [Yo, the axis of the container 1) Disconnector 3 It is arranged so as to be parallel to the axis of the container '1, and is supported by a couple connection support frame /I2. Further, above the 9-full connection part/I3, a disconnector/IO and grounding device 41 are arranged so that the axis of each container is coaxial with the axis of the container of the cable connection part/13. Is it l/? Disconnector 31
The branch [-1 output section 3' is connected to Ic. The disconnector 40 and the grounding device 41 are connected to the 7-fold connecting section female holding frame/12 in the same way as the couple connecting section 7'I3.
Supported by Nyotsu-C.

In each of the above embodiments, J3 is installed (one disconnector and one grounding device)
7-Sol connection support frame 1) Disconnector: 1: Since Ic can support only the cable connection support frame, there is no space between centers to install a support frame for each device, and the support frame is large. Il
It is reduced to +. The branch 11 output part to be installed on the disconnector is installed on both sides of the disconnector container. The equipment can be arranged efficiently without taking up wasted space, so the connecting busbar can be placed between the equipment easily. reduced to

[Effects of the Invention 1] As described below, the present invention has low damage to the entire equipment, earthquake resistance, excellent workability during maintenance and inspection, and low installation costs. This has the effect of providing 11j gas-insulated enclosures.

[Brief explanation of drawings]

Figure '1 shows a general substation multi-bus system - IP for line
The line connection diagrams, Figures 2 and 3, are respectively the layout and configuration diagram of the conventional gas insulated insulation equipment, which corresponds to the line connection diagram shown in Figure 1. Fig. 5 is a layout configuration diagram showing an embodiment of the gas-insulated opening/closing device of the present invention.・・Main bus bar, DS・WJi circuit, CB
...Disruptor, [S...Line grounding device, C11.
...Couple connection part, 1...Shiya l1lli device, 2,
33... Branch I'll exit part, 4.5... Main bus line,
6, 7... Disconnector, 8... Connection busbar, 9... Disconnector, 10... Earthing device, 11... Couple connection part,
12... Connection bus bar, 2'1... Breaker, 22...
・Failure part, 23a, 231+... Current-carrying conductor, 24a
, 2/'Il+, 2/IO-...branch 1" output part,
255°26...Main bus, 27.28...Disconnector,
29...Disconnector, 30...Couple connection, 31.
...11.32 ...1 person's fragment, 33,338.
33b, 33cm... Current-carrying conductor, 34a, 34b
, 34c - branch [21 exit part, 35. d6...
Main FTL line, 37,3ε3...Disconnector, 39...Main busbar support frame, /1. O...Disconnector, 41...Grounding device, /12...Couple connection support frame, 7317
Representative Patent Attorney Kensuke Norichika (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4 Figure 1-W2

Claims (3)

[Claims] (1) A breaker section that connects the fixed side and the movable electrode to the right is housed inside the breaker container, and a current-carrying conductor led out from one end of the breaker section is branched into two parts inside the container, and this branched Two branches 1. Each current-carrying conductor is provided on the same side of the container. These branched lζ current-carrying conductors are led out to the l outlet part, and these branched lζ current-carrying conductors are connected to the axis of the vessel and τF.
("Ik'V") They are connected by two main busbars arranged in a curved shape and integrated with n disconnectors, and on the other hand, a current-carrying conductor led out from the thin end of the disconnection section connects the two The branch [branch 1 installed on the opposite side of the axis of the disconnector container with respect to the -1 outlet] is led out to the outlet, and this branch outlet connects the disconnector and the ground H'WI. Cas insulated switchgear characterized by being connected to the couple connection through. (2) A branch outlet part for connecting the 1C current-carrying conductor led out from one end of the branch part to the cable connection part is provided on the handle of the breaker container, and A disconnector and a grounding device to be connected are arranged orthogonally to the edge of the disconnector container, and the disconnector and the earthing device are supported by the cable connection support frame and the disconnector. Gas insulated switchgear according to scope 1. (3) A branch [1 outlet part is provided above the breaker container] for connecting the current-carrying conductor led out from one end of the breaker part to the cable connection part, and the branch [1 outlet part] is connected to the cable connection part. The disconnector, grounding device and cable 1 to be connected and the vessel axis of the isthmus are arranged on the same axis and parallel to the axis of the disconnector vessel,
A gas insulated switchgear according to claim 1, wherein the disconnector and the grounding device are supported on a 9-nor connection support frame.