JP2000341814A - Gas insulation switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas insulation switchgear for reducing an installation space and improving work of maintenance and check. SOLUTION: A gas insulation switchgear includes first and second main bus bars 11 and 12 at upper and lower parts, and first and second instrumental transformers 28 and 30, each connected with the main bus bars 11 or 12. In this case, the first and second instrumental transformers 28 and 30 are put horizontally with the main bus bars 11 and 12 and put in the same direction crosswise with the first and second main bus bars 11 and 12.

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 more particularly to a device arrangement for miniaturization.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a side view showing an arrangement of two sets of main bus instrument transformers of a double bus system in a conventional gas insulated switchgear disclosed in Japanese Patent Application Laid-Open Publication No. H10-209,878.

[0003] As shown in the figure, a first main bus 1 and a second main bus 2 are arranged horizontally and parallel to each other. A connection bus 4 having a first grounding switch 3 is arranged on one side of the first main bus 1, and a first instrument transformer 5 is arranged below the connection bus 4. A connection bus 7 having a second grounding switch 6 is arranged on the other side of the second main bus 2, and a second instrument transformer 8 is arranged above the connection bus 7. Then, the main bus 2, the first instrument transformer 5, and the connection bus 7 are connected to the supporting frames 9, 10,
11 supported. W is a width dimension occupied by the first and second instrument transformers 5, 8.

[0004]

As described above, the first and second instrument transformers 5 and 8 in the conventional double bus type gas insulated switchgear are provided with the first and second main buses 1 and 2 as described above. 2 are arranged on both sides, respectively, so that the occupied width dimension W becomes large, and there is a problem that the arrangement area of the gas-insulated switchgear becomes large as a whole. Further, since maintenance and inspection of the instrument transformers 5 and 8 must be performed from both sides, there is a problem that workability of maintenance and inspection is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a double bus system capable of reducing the installation area and improving the workability of maintenance and inspection. It is an object of the present invention to obtain a gas-insulated switchgear.

[0006]

A gas-insulated switchgear according to a first aspect of the present invention is connected to first and second main buses, and first and second main buses, which are arranged vertically one above the other. In the double bus type gas insulated switchgear having the first and second instrument transformers, the first and second instrument transformers are arranged horizontally with the first and second main buses in the first and second buses. 2 and arranged in the same direction at right angles to the main bus.

According to a second aspect of the present invention, in the gas insulated switchgear according to the first aspect, the first and second instrument transformers are arranged so as to be shifted in a direction away from the first and second main buses. It was done.

According to a third aspect of the present invention, in the gas insulated switchgear according to the first aspect, the first and second instrument transformers are respectively positioned in a longitudinal direction of the first and second main buses. It is arranged in a shifted manner.

A gas insulated switchgear according to a fourth aspect of the present invention is characterized in that the first and second main buses arranged vertically and the first and second main buses connected to the first and second main buses, respectively.
And a double-bus gas-insulated switchgear having a second instrument transformer, wherein the first instrument transformer is at a right angle to the first main bus, and the second instrument transformer is the second instrument transformer. Are arranged horizontally and at right angles to the main bus line.

The gas insulated switchgear according to claim 5 of the present invention is characterized in that the first and second main buses arranged vertically above and below the first main bus are respectively connected to the first and second main buses. And a double-bus gas-insulated switchgear having a second instrument transformer, wherein the first instrument transformer is coaxial with one end of the first main bus, and the second instrument transformer is The second main bus is coaxially arranged at one end of the first main bus which is different from the one end of the first main bus.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing the configuration of a gas insulated switchgear according to Embodiment 1 of the present invention, FIG. 2 is a front view of the gas insulated switchgear of FIG. 1, and FIG. FIG. 4 is a sectional view taken along line IV-IV in the gas insulated switchgear of FIG.

In FIG. 3, reference numeral 11 denotes a first main bus;
Is a second main bus, 13 is a first bus disconnector connected to the first main bus 11, and 14 is a second bus disconnector connected to the second main bus 12. Then, the circuit breaker 15, the grounding switch 16, the lightning arrester 17, and the cable connecting part 18 are connected following the first and second bus disconnectors 13 and 14,
A transformer circuit unit 19 is formed.

Reference numeral 20 denotes a first main bus 11 connected to the first main bus 11.
Is a second bus disconnector connected to the second main bus 12. Then, following the first and second bus disconnectors 20, 21, the circuit breaker 22, the disconnector 23,
Grounding switch 24, instrument transformer 25, cable connection 2
6, the transmission line circuit unit 27 is formed. Reference numeral 28 denotes a first instrument transformer connected to the first main bus 11 via a connection bus 29, and reference numeral 30 denotes a second instrument transformer connected to the second main bus 12 via a connection bus 31. It is a vessel.

Reference numeral 32 denotes a first main bus connected to the first main bus 11.
, A reference numeral 33 denotes a second bus disconnector connected to the second main bus 12, and reference numerals 34 and 35 denote instrument current transformers connected to the first and second bus disconnectors 32 and 33, respectively. , 3
Reference numeral 6 denotes a circuit breaker connected between the two current transformers 34 and 35. The bus communication unit 37 is used in the above-mentioned 32-36.
Is formed.

As shown in FIGS. 1, 2 and 4, each electric device forming the gas insulated switchgear shown in FIG. 3 has first and second main buses 11 and 12 which are vertically arranged in parallel. Horizontally and at right angles, the transformer circuit unit 19, the transmission line circuit unit 27, the first and second instrument transformers 28, 30,
And the bus bar communication unit 37 are arranged in the same direction. And the first and second instrument transformers 28,
Numerals 30 are arranged with an occupied arrangement width dimension W1 as shown in FIG. 38 is the first and second main buses 11, 12
Is a support base for supporting the first and second instrument transformers 28, 30.

As described above, according to the first embodiment, the first
And the second instrument transformers 28, 30 are arranged horizontally, at right angles and in the same direction as the first and second main buses 11, 12, so that the occupied arrangement width of the instrument transformers 28, 30 is provided. The size W1 can be reduced. Further, since the first and second instrument transformers 28 and 30 can be maintained and inspected from the same direction, workability can be improved.

Embodiment 2 FIG. FIG. 5 is a side view showing an arrangement of an instrument transformer in a gas-insulated switchgear according to Embodiment 2 of the present invention. As shown in the figure, a connection bus 4 connecting between the first main bus 11 and the first instrument transformer 28.
2 is longer than a connection bus 40 connecting between the second main bus 12 and the second instrument transformer 30, and the first and second instrument transformers 28 and 30 are made first and second. Main bus 1
Since the first and second instrument transformers 28 and 30 have large capacities and large diameters D2, the width W2 has a sufficient margin in the width direction dimension W because the first and second instrument transformers 28 and 30 have large displacements. The arrangement can be performed without setting the center interval D1 of the diameters large.

As described above, according to the second embodiment, the first and second instrument transformers 2 arranged vertically in the same direction.
8 and 30 are shifted in the direction away from the first and second main buses 11 and 12, so that one of them is connected by a connection bus 40 longer than the other, so that the first and second instruments are connected. The distance D1 between the main buses 11 and 12 can be set to be smaller than the outer diameter D2 of the transformers 28 and 30. Even if the large-diameter instrument transformers 28 and 30 have a large capacity, The arrangement can be performed without increasing the interval between the buses 11 and 12.

Embodiment 3 FIG. 6 is a plan view showing a configuration of a gas-insulated switchgear according to Embodiment 3 of the present invention.
7 is a front view of the gas insulated switchgear of FIG. 6, and FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG.

As shown in the drawings, the position of the first instrument transformer 28 on the first main bus 11 and the second main bus 1
The position of the second instrument transformer 30 in FIG. 2 is shifted in the longitudinal direction of both main buses 11 and 12. L2 is a length dimension.

As described above, according to the third embodiment, the first
And the second instrument transformers 28 and 30 are arranged to be displaced in the longitudinal direction of the first and second main buses 11 and 12, so that the first and second instrument transformers 2 and 30 are arranged.
Even if the diameters 8 and 30 have a large capacity and a large diameter, they can be arranged without increasing the space between the first and second main buses 11 and 12.

Embodiment 4 FIG. 9 is a plan view showing a configuration of a gas-insulated switchgear according to Embodiment 4 of the present invention.
0 is a side view of the gas insulated switchgear of FIG. As shown in the respective drawings, a first instrument transformer 28 connected to a first main bus 11 via a connection bus 29 is arranged above, and the rest is the same as the first embodiment. . Note that L1
Is a length dimension, and H is a height dimension.

As described above, according to the fourth embodiment, the first
Is disposed above the first main bus 11, the distance between the first and second main buses 11 and 12 is increased even in the large-diameter instrument transformers 28 and 30 having a large capacity. It is possible to arrange them without doing so.

Embodiment 5 FIG. 11 is a plan view showing a configuration of a gas insulated switchgear according to Embodiment 5 of the present invention, and FIG. 12 is a front view of the gas insulated switchgear of FIG. As shown in each figure, the connection bus 2 is connected to one end of the first main bus 11.
9, a first measuring transformer 28 is arranged via a connecting bus 31 at one end of the second connecting bus 12 which is different from the one end of the first main bus 11 via a connecting bus 31. A transformer 30 is arranged, and the rest is the same as the first embodiment. L3 is a length dimension.

As described above, according to the fifth embodiment, the first
A first instrument transformer 28 is arranged at one end of the main bus 11 via a connection bus 29 and is connected to one end of the second main bus 12 which is different from one end of the first main bus 11. Since the second instrument transformer 30 is arranged via the bus bar 31, even if the first and second instrument transformers 28 and 30 have a large capacity and a large diameter, the width is reduced. And the first and second main buses 11, 1
2 can be shortened.

Embodiment 6 FIG. 13 is a plan view showing a configuration of a gas insulated switchgear according to Embodiment 6 of the present invention, FIG. 14 is a front view of the gas insulated switchgear of FIG. 13, and FIG. 15 is a side view of the gas insulated switchgear of FIG. is there. As shown in each figure, the first and second instrument transformers 28 and 30 are connected to the connection bus 29
And 31 are interposed, and the rest is the same as the first embodiment. W3 is a width dimension, and L4 is a length dimension.

As described above, according to the sixth embodiment, the first
And the second instrument transformers 28 and 30 are arranged on the opposite side of the transmission line circuit unit 31, respectively, so that the first and second
It is possible to shorten the length of the main buses 11 and 12 between the main buses 11 and 12 even if the first and second instrument transformers 28 and 30 have a large capacity and a large diameter. They can be arranged without giving any influence, and are effective when there is room in the width direction. In each of the above configurations, it has not been clarified that the single-phase or three-phase,
The same effect can be obtained by applying to either single-phase or three-phase.

[0028]

As described above, according to the first aspect of the present invention, the first and second main buses arranged vertically and the first and second main buses connected to the first and second main buses, respectively. Second
In the double bus type gas insulated switchgear having the instrument transformer, the first and second instrument transformers are horizontally arranged with the first and second main buses, and the first and second main buses are connected to the first and second main buses. Since the configuration is arranged at right angles and in the same direction, it is possible to provide a gas insulated switchgear capable of reducing the installation area.

According to a second aspect of the present invention, in the first aspect, the first and second instrument transformers include a first transformer.
In addition, the gas insulated switchgear that can be reduced in the height direction can be provided because it is arranged so as to be shifted in the direction away from the second main bus.

According to a third aspect of the present invention, in the first aspect, the first and second instrument transformers are arranged so as to be displaced from each other in the longitudinal direction of the first and second main buses. With this configuration, it is possible to provide a gas insulated switchgear capable of reducing the installation area.

According to a fourth aspect of the present invention, the first and second main buses, the first and second main buses, which are vertically arranged in parallel.
In a double bus type gas insulated switchgear having first and second main buses respectively connected to the main bus, the first instrument transformer has a second main bus at right angles to the first main bus and a second main bus.
Since the instrument transformer is arranged horizontally and at right angles to the second main bus, a gas insulated switchgear capable of reducing the installation area can be provided.

According to the fifth aspect of the present invention, the first and second main buses, the first and the second main buses, which are vertically arranged in parallel.
In the double bus type gas insulated switchgear having first and second main buses respectively connected to the main bus, the first instrumentation transformer is coaxial with one end of the first main bus.
Since the second instrument transformer is arranged coaxially at one end of the second main bus which is different from one end of the first main bus, the length of the main bus can be reduced. It is possible to provide a gas-insulated switchgear capable of performing the above operations.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a gas-insulated switchgear according to Embodiment 1 of the present invention.

FIG. 2 is a front view of the gas insulated switchgear of FIG.

FIG. 3 is a single-line diagram showing an electrical connection of the gas insulated switchgear of FIG. 1;

FIG. 4 is a cross-sectional view of the gas insulated switchgear of FIG. 2 taken along the line II-II.

FIG. 5 is a side view showing an arrangement of an instrument transformer in a gas-insulated switchgear according to Embodiment 2 of the present invention.

FIG. 6 is a plan view showing a configuration of a gas-insulated switchgear according to Embodiment 3 of the present invention.

FIG. 7 is a front view of the gas insulated switchgear of FIG. 6;

FIG. 8 is a view showing a VIII-VI in the gas insulated switchgear of FIG. 7;
It is sectional drawing which follows the II line.

FIG. 9 is a plan view showing a configuration of a gas-insulated switchgear according to Embodiment 4 of the present invention.

FIG. 10 is a side view of the gas insulated switchgear of FIG. 9;

FIG. 11 is a plan view showing a configuration of a gas-insulated switchgear according to Embodiment 5 of the present invention.

FIG. 12 is a front view of the gas insulated switchgear of FIG. 11;

FIG. 13 is a plan view showing a configuration of a gas-insulated switchgear according to Embodiment 6 of the present invention.

FIG. 14 is a front view of the gas insulated switchgear of FIG.

FIG. 15 is a side view of the gas insulated switchgear of FIG.

FIG. 16 is a side view of a conventional gas insulated switchgear.

[Explanation of symbols]

11 first main bus, 12 second main bus, 28 first
Instrument transformer, 29 connection bus, 30 second instrument transformer, 31 connection bus.

Claims (5)

[Claims] 1. A double bus system having first and second main buses arranged vertically and first and second instrument transformers respectively connected to the first and second main buses. In the gas insulated switchgear of the above, the first and second instrument transformers are arranged horizontally with the first and second main buses, at right angles to the first and second main buses, and in the same direction. Characterized gas insulated switchgear. 2. The gas insulated switchgear according to claim 1, wherein the first and second instrument transformers are arranged so as to be shifted from the first and second main buses. 3. The gas insulated switchgear according to claim 1, wherein the first and second instrument transformers are arranged so as to be displaced from each other in the longitudinal direction of the first and second main buses. apparatus. 4. A double bus system having first and second main buses arranged vertically and first and second instrument transformers respectively connected to the first and second main buses. In the gas insulated switchgear of the above, the first instrument transformer is arranged upward at a right angle to the first main bus, and the second instrument transformer is arranged horizontally and at a right angle to the second main bus. A gas insulated switchgear characterized by being performed. 5. A double bus system having first and second main buses arranged vertically above and below, and first and second instrument transformers respectively connected to the first and second main buses. In the gas insulated switchgear of the above, the first instrument transformer is coaxial with one end of the first main bus in the longitudinal direction, and the second instrument transformer is a coaxial connector of the second main bus. A gas-insulated switchgear, which is arranged coaxially at one end of the first main bus that is different from one end.