JPH0667091B2 - Gas insulated bus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention improves the installation means of a three-phase separation busbar that connects, for example, a transformer and an electric device such as a gas-insulated switchgear. The present invention relates to a gas-insulated busbar.

(Prior Art) Generally, a transformer and an electric device such as a gas-insulated switchgear are connected by a three-phase separated gas-insulated bus bar. The means for connecting the gas-insulated busbar is determined by the installation position of the transformer, the lead-out position of the gas-insulated switchgear, and the like. on the other hand,
The lead positions of transformers and gas-insulated switchgear are determined by the installation area of these electric devices and building conditions, but among them, transformers generally have a three-phase lead portion that is drawn out horizontally. Is.

This will be described with reference to the arrangement shown in FIG. In FIG. 4, the connecting portion 2 drawn out from the transformer 1
a to 2c are connected to gas-insulated buses 4a to 4c via connection joints 3a to 3c, respectively, and these gas-insulated buses 4a to 4c are connected.
c is a connecting portion 6a, 6b, 6c which is horizontally drawn out from the gas insulated switchgear 5 as shown in FIG.
It is connected via 7b and 7c.

At this time, the distance between the center points of the connecting portions 2a and 2b of the transformer 1 is d ₁ , the diameter of the gas-insulated busbar container is D, the inclination angle of the gas-insulated busbar is θ, and the gas-insulated busbar-side connection joints 3a and 3b are connected. Assuming that the distance between the respective center points of the above is d ₂ , in the arrangement configuration of the transformer and the gas insulated switchgear in which the gas insulated busbars are horizontally arranged as shown in FIG. 4, if d ₁ = d ₂ The angles are ∠θ, and the gas-insulated buses are 4a // 4b // 4c. In this case, when the gas-insulated busbar containers 4a, 4b, 4c are close to each other and d ₁ = d ₂ is small, or when the gas-insulated busbar D is large, the gas-insulated busbar containers come into contact with each other, and The gas insulated switchgear cannot be connected. Therefore, as shown in FIG. 6, the joint a '<b'<is attached to the connecting portion of the transformer.
The length of the connecting part is 2a + a '<2
b + b '<2c + c', while joints a '>b'> c 'are connected to the connection part of the gas insulated switchgear 5, and the length of the connection joint is 6a + a'> 6b + b '> 6c + c'. Connection part 2a + a 'to 2c + of the container 1
c ', the connection portion 6a + a' to 6c + of the gas insulated switchgear 5
A means for forming the three parts of c'and the gas-insulated buses 4a to 4c into a Z shape has been taken.

However, the arrangement of the Z-shaped gas-insulated busbars has an arrangement area of the connecting portions 2b + b ′, 2c + c ′, 6a + a ′, 6b +.
Since b'becomes longer, more is required, and there is a problem that prevents the downsizing of equipment.

(Problems to be Solved by the Invention) When connecting a gas-insulated switchgear to a transformer having horizontally arranged three-phase outlets as described above, in the conventional technique, the gas-insulated busbars are arranged in a plane. Although they were connected horizontally, in this case, there was a problem that the bus bar became long and the installation space increased.

The present invention, when connecting a transformer having a horizontal three-phase outlet and a device such as a gas-insulated switchgear, at any installation angle between the two, the busbar container does not contact each other, the installation area It is to provide a gas-insulated bus bar that can minimize the above.

[Structure of the Invention] (Means for Solving Problems) The gas-insulated bus bar of the present invention is a three-phase connecting a transformer having horizontal three-phase outlets and an electric device having the same horizontal outlets. In the separation-type gas-insulated busbar, the lead-out portion of each phase of the transformer and the lead-out portion of each phase of the electrical equipment corresponding thereto are arranged at positions where their axes are deviated, and A vertical connection joint is provided in the lead-out section,
The height of the connecting joint of the middle phase of the three phases is set to be different by more than the diameter of the gas-insulated bus bar than the other two-phase connecting joints, and the gas-insulated bus bar of each phase is attached to each of these connecting joints. The gas-insulated busbars for each phase are connected horizontally, and the gas-insulated busbars for the intermediate phase and the other two-phase gas-insulated busbars have a height difference equal to or larger than the diameter of the gas-insulated busbars. Is arranged obliquely with respect to the axis of the lead-out portion of each phase.

(Operation) In the present invention having such a configuration, the three-phase outlet portion of the transformer is made horizontal by providing a height difference between the medium-phase gas-insulated busbar and the other two-phase gas-insulated busbars. The width interval between the gas insulated buses can be reduced as it is.

(Example) Next, one example of the gas-insulated bus bar according to the present invention will be specifically described with reference to the drawings.

The same parts as those of the conventional technique are designated by the same reference numerals and the description thereof will be omitted.

* Structure of Example * In FIG. 1, the transformer 1 has three-phase connecting portions 21a-2.
1c is pulled out, and connection joints 22a to 22c are provided on the connection portions 21a to 21c, respectively. Of the connecting joints 22a to 22c, the intermediate connecting joint 22b is another two-phase connecting joint 22 as shown in FIG. 2 and FIG.
The height H is set higher than the diameters of the gas-insulated busbars 23a to 23c, and the height H is larger than the diameter of the gas-insulated busbars 23a to 23c. On the other hand, three-phase connecting portions 24a to 24c are also provided on the gas insulated switchgear 5 side. As shown in FIG. 2, the connecting portions 24a to 24c have a height difference between the middle phase 24b and the connecting portions 24a and 24c of the other two phases, and the height difference is the connecting joints 22a to 22c. The height difference H between them is equal to the height H. Then, the gas-insulated bus bars 23a to 2c are connected to the connection joints 25a to 25c of the connection portions 24a to 24c and the connection joints 22a to 22c.
3c is horizontally connected.

* Operation of Embodiment * As described above, in this embodiment, since the gas-insulated busbar 23b of the intermediate phase and the gas-insulated busbars 23a and 23c of the other two phases are arranged with a height difference, a place where the disposition area is narrow. Even if the installation angle between the transformer and the gas-insulated switchgear is large, the transformer and the gas-insulated switchgear can be connected without contact of the gas-insulated busbar.

* Other Examples * In this example, the intermediate-phase gas-insulated busbar was provided above the other two-phase gas-insulated busbars, but the present invention is not limited to this example, and the intermediate-phase gas-insulated busbar is not limited to this example. The gas-insulated bus bar may be provided below the two phases.

[Effects of the Invention] As described above, according to the present invention, a gas-insulated busbar that can minimize the installation area without contact between the gas-insulated busbar containers at any installation angle between the transformer and the gas-insulated switchgear is provided. Can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view of a gas-insulated bus bar showing an embodiment of the present invention, FIG. 2 is a view taken along arrow A of FIG. 1, FIG. 3 is a view taken along arrow B of FIG. 1, and FIG. 5 is a perspective view showing a gas-insulated bus bar of FIG.
The drawing is a view taken along the arrow A in FIG. 4, and the sixth drawing is a perspective view showing the Z-shaped gas-insulated bus bar arrangement. 1 ... Transformer, 2a, 2b, 2c ... Connection part, 3a, 3b,
3c ... Connection joint, 4a, 4b, 4c ... Gas insulated bus bar, 5
... Gas-insulated switchgear, 6a, 6b, 6c ... Connection part, 7
a, 7b, 7c ... Connection joint, 21a, 21b, 21c ...
Connection part, 22a, 22b, 22c ... Connection joint, 23a,
23b, 23c ... Gas-insulated busbars, 24a, 24b, 24
c ... connection part.

Claims (1)

[Claims] 1. A three-phase separation type gas-insulated busbar for connecting a transformer having a horizontal three-phase output portion and an electric device having the same horizontal output portion, wherein the output portion of each phase of the transformer is , The corresponding output of each phase of the electrical equipment is arranged at a position where its axis is offset, and a vertical connection joint is provided at the output of each phase of the transformer.
The height of the connecting joint of the middle phase of the three phases is set to be different by more than the diameter of the gas-insulated bus bar than the other two-phase connecting joints, and the gas-insulated bus bar of each phase is attached to each of these connecting joints. The gas-insulated busbars for each phase are connected horizontally, and the gas-insulated busbars for the intermediate phase and the other two-phase gas-insulated busbars have a height difference equal to or larger than the diameter of the gas-insulated busbars. A gas-insulated bus bar, which is arranged obliquely with respect to the axis of the lead-out portion of each phase.