JPH11136817A - Gas insulation switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a depth of a bus tank and thereby reduce the installation area of a gas insulation switchgear, by locating the bus tank in an upper part of a case for each unit and storing both power buses and load buses in the bus tank. SOLUTION: In a bus tank 18 of a power receiving unit B, load buses 20 and power buses 21 are stored, three phases for each type of bus, and total six buses are arranged parallelly along a straight line. The three phases of the load buses 20 are supported by an insulating spacer 26 and the three phases of the power buses 21 are supported by an insulating spacer 27. On the other hand, in a bus tank 17 of a transformer unit A, two insulating spacers 26, 27 are installed, load buses 20 are supported by the insulating spacer 26, and the insulating spacer 27 is not used. Since the power buses 21 and the load buses 20 are stored in the single bus tanks 17, 18, the depth of the gas insulating switchgear can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas insulated switchgear, and has a reduced unit installation area.

[0002]

2. Description of the Related Art A gas-insulated switchgear for receiving power, comprising:
The 2/84 KV class device has the following configuration. First, the configuration of the single-line diagram is shown in FIG. In the figure, ES is a grounding switch, VCB is a vacuum circuit breaker, DS is a disconnecting switch, MOF is a transformer for current transformer, LA is an arrester, CH
D is a cable head, CT is a current transformer, and Tr is a transformer. Each of these devices is divided into units A, B, and C,
Each device is accommodated in the housing for each unit arranged as shown in FIG.

FIGS. 9, 10 and 11 show the structure of units A, B and C when viewed from the direction of arrow P in FIG. As shown in FIG. 9, the unit A is provided with an equipment tank 1 and a busbar tank 2, and inside the equipment tank 1, an external transformer Tr is provided.
And a conductor 3 for connecting the internal ground switch ES and the internal ground switch ES;
A conductor 4 for connecting the vacuum circuit breaker VCB and the disconnector DS in the bus bar 2 is provided, and a load bus 5 is accommodated in the bus bar 2.

[0004] Next, as shown in FIG. 10, the unit B is provided with an equipment tank 6 and busbar tanks 7 and 8, and the busbar 8 accommodates the load busbar 5. In the equipment tank 6, a conductor 9 for connecting the cable head CHD and the ground switch ES, a ground switch ES and a vacuum circuit breaker VCB are provided.
And a conductor 11 for connecting the vacuum circuit breaker VCB and the disconnector DS in the busbar tank 7 are accommodated. A power bus 12 is accommodated in the bus tank 7.

[0005] Finally, the unit C houses an instrument transformer / current transformer MOF as shown in FIG. As shown in FIG. 12, a load bus 5 and a power supply bus 12 are connected to both sides of the instrument transformer / current transformer MOF, respectively.

[0006]

Problems to be Solved by the Invention However, FIGS.
Since the bus tanks are individually provided at the upper part of the unit as shown in FIG. 9, the bus tanks are arranged in the depth direction which is the left and right direction in FIGS. 9 and 10, and the unit becomes longer in the depth direction. Therefore, the installation area of the gas insulated switchgear needs to be large.

Therefore, an object of the present invention is to provide a gas insulated switchgear which solves the above problem.

[0008]

According to a first aspect of the present invention, there is provided a gas insulated switchgear having a unit housing a bus tank and an equipment tank in a housing in a horizontal direction. In a gas-insulated switchgear, in which the buses connecting the respective units are accommodated between the bus tanks located at substantially the same height, the bus tanks of the respective units are arranged at the upper part of the housing, and the buses are arranged in the bus tanks. It is characterized by housing both power supply bus and load bus,
According to a second aspect of the present invention, in addition to the configuration of the first aspect, a power supply bus and a load bus in the bus tank are arranged side by side in a horizontal direction, and each of the three-phase buses is arranged substantially vertically. The gas insulated switchgear according to claim 3 is characterized in that it is provided with an insulating spacer that separates the gas between the bus tanks and supports the bus in addition to the configuration of claim 2. , And a bus for six phases of a power supply bus and a load bus is supported by a single insulating spacer.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. The same parts as those in the related art are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described.

(A) Embodiment 1 FIGS. 1 to 4 show the configuration of a gas insulated switchgear according to the present invention. FIG. 1 is a single-line diagram of the gas insulated switchgear, FIG. 2 is a layout diagram of devices in each unit, FIG.
4A is a configuration diagram of a power receiving unit, and FIG. 4B is a configuration diagram of a transformer unit.

As shown in FIG. 2, a load bus 20 is provided above power receiving unit B, transformer unit A, and MOF unit C, and a power supply bus 21 is provided above power receiving unit B and MOF unit C. ing. For this reason, as shown in FIG.
7, 18, and 19 are provided.

Next, a power receiving unit B and a transformer unit A
Are shown in FIGS. 4A and 4B. Power receiving unit B,
In the transformer unit A, the busbar tanks 18 and 17 are arranged above the casings 22 and 24, and the equipment tanks 23 and 25 are arranged below as described above.

In the bus tank 18 of the power receiving unit B,
Load buses 20 and power supply buses 21 are accommodated in three phases, respectively, and six buses are arranged in a horizontal direction along a straight line. The load buses 20 for three phases are connected to the insulating spacers 26.
On the other hand, the power bus 21 for three phases is supported by the insulating spacer 27.

In the bus tank 17 of the transformer unit A, two insulating spacers 26 and 27 are provided, the load bus 20 is supported by the insulating spacer 26, and the insulating spacer 27 is not used.

In such a gas insulated switchgear, the power supply bus 21 and the load bus 20 are connected to a single bus tank 17, 1.
8, the depth dimension of the gas-insulated switchgear becomes smaller than before. The configuration of the power receiving unit B and the transformer unit A other than the portion indicated by the two-dot chain line in FIG. 4A is common. Therefore, the cost of the gas insulated switchgear is reduced.

(B) Second Embodiment Next, a second embodiment of the gas insulated switchgear according to the present invention will be described. In this embodiment, as shown in FIG. 5, the insulating spacers 26, 2 of the bus tank 18 in the power receiving unit B are used.
7 are arranged in a “C” shape, and the load buses 20 and the power supply buses 21 for the three phases are also arranged obliquely in the vertical direction in accordance with these. The insulating spacers 26 and 27 and the load bus 20 in the bus tank in the transformer unit A are also arranged in the same manner as above, but are not shown.

In such a gas insulated switchgear, since the power bus 21 and the load bus 20 for three phases are arranged in a “C” shape, the depth dimension of the gas insulated switchgear is smaller than in the first embodiment. Become.

The other configuration is the same as that of the first embodiment, and the description is omitted.

(C) Third Embodiment Finally, a third embodiment of the gas insulated switchgear according to the present invention will be described. In this embodiment, as shown in FIG. 6, in a power receiving unit B, a load bus 20 and a power bus 21 are arranged in a horizontal direction, and buses for three phases are arranged in a vertical direction. The load buses 20 and the power supply buses 21 are supported by penetrating six phases of buses through a single insulating spacer 28.

In the transformer unit (not shown),
If an insulating spacer having holes for six phases is used, three holes on one side are not used because the power supply bus 21 is not inserted. However, the insulating spacer is used as it is as a three-phase insulating spacer.

In such a gas insulated switchgear, since the power bus 21 and the load bus 20 for three phases are arranged in two rows in the vertical direction, the depth dimension of the gas insulated switchgear is more than that of the second embodiment. Become smaller. Further, since the bus for six phases is supported by a single insulating spacer, the cost can be reduced.

The other configuration is the same as that of the first embodiment, and the description is omitted.

[0023]

As can be seen from the above description, claim 1
According to the gas insulated switchgear according to the present invention, since both the power bus and the load bus are accommodated in a single bus tank arranged at the top of the housing, the depth dimension of the bus tank is reduced, Installation area is smaller than before.

According to the gas insulated switchgear of the second aspect, the power supply bus and the load bus are arranged in the horizontal direction, and the three-phase buses are arranged in the vertical direction. The installation area of the insulated switchgear is smaller than in the first embodiment.

According to the gas insulated switchgear of the third aspect, since the bus for six phases is supported by a single insulating spacer, the material of the insulating spacer can be reduced and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a single-line diagram of a gas-insulated switchgear according to a first embodiment of the present invention.

FIG. 2 is a diagram showing the arrangement of devices in a unit in the first embodiment of the gas-insulated switchgear according to the present invention.

FIG. 3 is an external perspective view of the gas-insulated switchgear according to the first embodiment of the present invention.

4A and 4B are diagrams illustrating a configuration of a power receiving unit, and FIG. 4B is a diagram illustrating a configuration of a transformer unit, according to Embodiment 1 of the gas insulated switchgear according to the present invention.

FIG. 5 is a configuration diagram of a power receiving unit in Embodiment 2 of the gas insulated switchgear according to the present invention.

FIG. 6 is a configuration diagram of a power receiving unit in a third embodiment of the gas insulated switchgear according to the present invention.

FIG. 7 is a single-line diagram of a conventional gas-insulated switchgear.

FIG. 8 is an external perspective view of a conventional gas insulated switchgear.

FIG. 9 is a configuration diagram of a unit A according to a conventional gas insulated switchgear.

FIG. 10 relates to a conventional gas-insulated switchgear, which is a unit B
FIG.

FIG. 11 relates to a conventional gas insulated switchgear, and shows a unit C
FIG.

FIG. 12 relates to a conventional gas insulated switchgear, and shows a unit C
The perspective view which shows the internal structure of FIG.

[Explanation of symbols]

 17, 18 ... bus tank 20 ... load bus 21 ... power supply bus 22, 24 ... housing 23, 25 ... equipment tank 28 ... insulating spacer

Claims (3)

[Claims] 1. A unit in which a bus accommodating a bus tank and an equipment tank are arranged in a housing in a horizontal direction, and a bus connecting the respective units is accommodated between bus bus tanks located at substantially the same height. A gas insulated switchgear, characterized in that the bus tank in each unit is arranged at an upper part of a housing and both the power bus and the load bus are accommodated in the bus tank. 2. The gas insulated switchgear according to claim 1, wherein a power supply bus and a load bus in the bus tank are arranged side by side in a horizontal direction, and respective buses of three phases are arranged in a substantially vertical direction. 3. An insulating spacer for separating the gas between the bus tanks and supporting the buses is provided, and buses for six phases of a power supply bus and a load bus are supported by a single insulating spacer. A gas insulated switchgear according to claim 1.