JPH11215628A - Gas-insulated switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To utilize an installation area for the whole apparatus effectively, and to reduce the size by providing feeder leading-out sections in bus-bars which connect disconnectors of main bus-bars divided into a plurality of sections. SOLUTION: A main bus-bar is sectioned into main bus-bars 2A and 2B by a bus-bar sectioning circuit 1, and to the main bus-bar 2A a transmission line circuit 3A and a transformer circuit 4A are connected. On the other hand, to the main bus-bar circuit 2A a transmission line circuit 3B and a transformer circuit 4B are connected. Besides, the main bus-bar 2A connects a grounging switch 7A and a disconnector 8A, and is connected furthermore to a disconnector 8B and a grounding switch 7B through bus-bars 9. And, feeder leading-out sections 10 are provided in the bus-bars 9 which connect the disconnector 8A and the disconnector 8B, and a transformer circuit 4C is connected to these leading-out sections 10. Consequently, it becomes possible to arrange a circuit effectively without making an installation area larger, and to reduce the size of the whole apparatus.

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 capable of reducing the size and size of substation equipment, and more particularly to a gas insulated switchgear having an improved arrangement of the device.

[0002]

2. Description of the Related Art Conventionally, a gas insulated switchgear encloses a highly insulative gas such as SF _{6 in} a metal cylindrical container, and includes a high-voltage conductor and a contact for opening and closing a current.
A switchgear that is insulated and supported using an insulating spacer or the like, and has recently become the mainstream of newly installed switchgears because of its excellent economy and maintainability.

An example of such a conventional gas insulated switchgear will be described with reference to FIGS. FIG. 7 is a single-line diagram showing a conventional gas-insulated switchgear in a single-bus system, and FIG.
FIG. 9 is a plan view showing a gas insulated switchgear based on the solid line diagram of FIG. 7, and FIG. 9 is a side view showing a bus segment line of the gas insulated switchgear of FIG.

As shown in FIGS. 7 and 8, the main bus is
The bus is divided into a main bus 2A and a main bus 2B by a bus division line 1. The transmission line 3A and the transformer line 4A are connected to the main bus 2A, while the transmission line 3B and the transformer line 4B are connected to the main bus 2B.

The bus division line 1 is connected to the main bus 2 as described above.
A and 2B are divided, and are arranged in a substantially straight line between the main bus 2A and the main bus 2B in order to simplify the device configuration. The device configuration of the bus division line 1 will be described below with reference to FIGS. 8 and 9. That is,
Main bus 2A is connected to instrument transformer 6A, earthing switch 7A and disconnector 8A via bus 5A, and further connected to disconnector 8B, earthing switch 7B and instrument transformer 6B via bus 9. And the main bus 2 via the bus 5B
B.

[0006]

However, the conventional gas insulated switchgear as described above has the following problems. That is, the bus division line 1 divides the main buses 2A and 2B as shown in FIGS. 7 and 8, and the main bus 2A and the main bus 2 are used to simplify the equipment configuration.
B and a substantially straight line.

For this reason, the installation space of the gas insulated switchgear is increased in the direction of the main buses 2A and 2B, and extra space is generated in both directions of the bus division line 1. That is, in this gas insulated switchgear, extra space is generated both in the vertical direction and the horizontal direction.

In order to cope with this, it is conceivable to arrange the bus section line 1 in a direction perpendicular to the main buses 2A and 2B. However, this measure complicates the equipment configuration of the bus section line 1 and reduces the cost. There are some difficulties in sex.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a gas insulated switchgear capable of effectively utilizing the installation area of the entire apparatus and reducing the size thereof.

[0010]

According to a first aspect of the present invention, a disconnector is provided on each of a plurality of divided main buses, and a bus is provided between these disconnectors. In the gas insulated switchgear, the feeder drawer is provided on the bus connecting the disconnectors of the main bus.

According to the first aspect of the present invention, since the feeder drawer is provided on the bus between the disconnectors, one line can be effectively disposed without increasing the installation area.

According to a second aspect of the present invention, there is provided a gas-insulated switchgear in which disconnectors are respectively installed in a plurality of divided main buses, and these disconnectors are connected by buses. A feeder drawer is provided substantially downward in the direction perpendicular to the bus to be connected, and a connection bus arranged in a direction intersecting at a right angle to the bus is connected to the drawer.

According to the second aspect of the present invention, a feeder drawer is provided substantially downward in a direction perpendicular to the bus connecting the disconnectors of the main bus, and the feeder extends in a direction substantially perpendicular to the bus. By connecting the connecting buses arranged in the gas-insulated switchgear, the center of gravity of the gas-insulated switchgear is lowered, and the earthquake resistance can be improved.

According to a third aspect of the present invention, in the gas insulated switchgear according to the second aspect, two lines are connected to the connection bus so that the feeders face each other.

According to the third aspect of the present invention, two feeders are connected to the connection bus so that the feeders are opposed to each other, so that two line feeders can be arranged with good space efficiency.

According to a fourth aspect of the present invention, in the gas insulated switchgear according to the second aspect, the connection bus is constituted by a three-phase collective type.

According to the fourth aspect of the present invention, since the connection buses are constituted by a three-phase collective type, it is possible to arrange the outlets of the buses connecting the disconnecting switches in a substantially straight line. The width of the gas insulated switchgear can be reduced.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

First Embodiment (FIGS. 1 to 3) FIG. 1 is a single-line diagram showing a first embodiment of a gas-insulated switchgear according to the present invention, and FIG. 2 is based on the single-line diagram of FIG. FIG. 3 is a plan view showing the gas insulated switchgear, and FIG. 3 is a side view showing a bus segment line of the gas insulated switchgear of FIG. Parts that are the same as or correspond to those of the conventional configuration will be described using the same reference numerals as in FIGS.

As shown in FIGS. 1 and 2, the main bus is
The bus is divided into a main bus 2A and a main bus 2B by a bus division line 1. The transmission line 3A and the transformer line 4A are connected to the main bus 2A, while the transmission line 3B and the transformer line 4B are connected to the main bus 2B. The transformer line 4C is connected to the bus division line 1 by the main bus 2
A and 2B are arranged substantially perpendicularly.

The device configuration of the bus division line 1 will be described below with reference to FIGS. 2 and 3. That is, main bus 2A is connected to instrument transformer 6 via bus 5A.
A, is connected to the earthing switch 7A and the disconnecting switch 8A, is further connected to the disconnecting switch 8B, the earthing switch 7B and the instrument transformer 6B via the bus 9, and is connected to the main bus 2B via the bus 5B. I have. Further, a feeder lead-out section 10 is provided on the bus 9 connecting the disconnecting switch 8A and the disconnecting switch 8B.
Is connected.

Next, the operation and effects of the first embodiment will be described.

In the first embodiment, the disconnector 8A and the disconnector 8A
A feeder lead-out unit 10 is provided on the bus 9 connecting between B and B, and a transformer line 4C is connected to the lead-out unit 10, so that one line is effectively arranged without increasing the installation area. Can be.

Second Embodiment (FIGS. 4 to 6) FIG. 4 is a single-line diagram showing a gas-insulated switchgear according to a second embodiment of the present invention, and FIG. 5 is based on the single-line diagram of FIG. FIG. 6 is a plan view showing the gas insulated switchgear, and FIG. 6 is a side view showing a bus division line of the gas insulated switchgear of FIG. The same parts as those in the first embodiment will be described with the same reference numerals.

As shown in FIGS. 4 and 5, the main bus is
As in the first embodiment, the bus is divided into a main bus 2A and a main bus 2B by a bus division line 1. The transmission line 3A and the transformer line 4A are connected to the main bus 2A, while the transmission line 3B and the transformer line 4 are connected to the main bus 2B.
B is connected.

The transformer section line 1 has a transformer line 4
C is arranged in a direction substantially perpendicular to main buses 2A and 2B, and bus division line 1 is arranged symmetrically with transformer line 4C.
Is provided with a transformer line 4D.

FIG. 5 shows the equipment configuration of the bus division line 1.
The following is a description based on FIG. 6 and FIG. That is, main bus 2A is connected to instrument transformer 6A, earthing switch 7A, and disconnector 8A via bus 5A, and is further connected to disconnector 8B, earthing switch 7B, and instrument transformer 6B via bus 9. , And connected to the main bus 2B via the bus 5B.

Further, a feeder lead-out portion 10 is provided on the bus 9 connecting the disconnecting switch 8A and the disconnecting switch 8B in a substantially straight line downward in a direction substantially perpendicular to the bus 9. The feeder drawer 10 includes main buses 2A and 2B.
The connection bus 11 is connected in a direction intersecting at a right angle to the connection bus 11. The connection bus 11 is of a three-phase batch type, and is connected to a transformer line 4C and a transformer line 4D.

Next, the operation and effect of the second embodiment will be described.

In the second embodiment, the disconnector 8A and the disconnector 8A
Since the feeder drawer 10 is provided substantially linearly below the bus 9 in a direction substantially perpendicular to the bus 9 connecting the B and B, the center of gravity of the gas insulated switchgear is lowered, and the earthquake resistance is improved. Also, the feeder drawer 10 has a main bus 2
A, 2B and a bus 9 are connected to a connection bus 11 in a direction substantially perpendicular to the bus 9, and a transformer line 4 C and a transformer line 4 D are arranged in both directions of the connection bus 11. Space efficient installation is possible.

Further, since the connecting bus bar 11 connected to the feeder lead-out portion 10 is formed as a three-phase collective type, the feeder lead-out portion 10 can be provided substantially linearly downward in a direction substantially perpendicular to the bus 9. Therefore, the width in the direction of the main buses 2A and 2B is reduced, and the installation space for the gas insulated switchgear can be reduced.

The present invention is not limited to the above embodiments, and the shape, material, quantity, etc. of each device can be changed as appropriate. For example, the number of switching devices provided in all three-phase collective lines is not limited to the number shown in the above embodiment.

[0033]

As described above, according to the first aspect of the present invention, by providing the feeder drawer on the bus between the disconnectors, one line can be effectively disposed without increasing the installation area. be able to. As a result, the entire device can be reduced.

According to the second aspect of the present invention, a feeder lead-out portion is provided substantially downward in a direction perpendicular to a bus connecting the disconnectors of the main bus, and the feeder intersects the lead at a substantially right angle to the bus. By connecting the connection buses arranged in the direction in which the gas is insulated, the center of gravity of the gas insulated switchgear is lowered, and the earthquake resistance can be improved.

According to the third aspect of the present invention, since two lines are connected to the connection bus so that the feeders are opposed to each other, it is possible to arrange the two line feeders with good space efficiency.

According to the fourth aspect of the present invention, since the connection buses are formed as a three-phase collective type, the outlets of the buses connecting the disconnectors can be arranged in a substantially straight line, and the main buses can be arranged. The width of the directional gas insulated switchgear can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a plan view showing a gas insulated switchgear based on the solid line diagram of FIG.

FIG. 3 is a side view showing a bus segment line of the gas insulated switchgear of FIG. 2;

FIG. 4 is a single-line diagram showing a first embodiment of the gas-insulated switchgear according to the present invention.

FIG. 5 is a plan view showing a gas insulated switchgear based on the solid line diagram of FIG. 4;

FIG. 6 is a side view showing a bus segment line of the gas insulated switchgear of FIG. 5;

FIG. 7 is a single-line diagram showing a conventional gas-insulated switchgear in a single-bus system.

FIG. 8 is a plan view showing a gas-insulated switchgear based on the solid line diagram of FIG. 7;

FIG. 9 is a side view showing a bus segment line of the gas insulated switchgear of FIG. 8;

[Explanation of symbols]

 1 Bus line division line 2A, 2B Main bus line 3A, 3B Transmission line line 4A, 4B, 4C, 4D Transformer line 5A, 5B, 9, 11 Bus 6A, 6B Instrument transformer 7A, 7B Grounding switch 8A, 8B Disconnect line Container 9 Bus 10 Feeder drawer 11 Connection bus

Claims (4)

[Claims] 1. A gas insulated switchgear in which disconnectors are respectively installed on a plurality of divided main buses and these disconnectors are connected by a bus, a feeder is drawn to a bus connecting the disconnectors of the main bus. A gas insulated switchgear characterized by comprising a part. 2. In a gas-insulated switchgear in which disconnectors are respectively installed in a plurality of divided main buses and these disconnectors are connected by a bus, a bus connecting the disconnectors of the main bus is substantially connected to each other. A gas insulated switchgear, characterized in that a feeder drawer is provided at a lower part in a right angle direction, and a connection bus arranged in a direction substantially perpendicular to the bus is connected to the drawer. 3. A feeder is opposed to the connection bus.
3. The gas insulated switchgear according to claim 2, wherein the gas insulated switchgear is connected to a line. 4. The gas insulated switchgear according to claim 2, wherein the connection bus is formed of a three-phase collective type.