JPH11234821A - Gas-insulated transformer facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the cost of an overall transformer facility by reducing the installation area and cutting the number of switching devices and connecting buses constituting a circuit unit. SOLUTION: This gas insulated transformer facility is made up of main buses 6a, 5b divided into plural sections, bus sectionalizing circuit units connecting between the divided main buses 5a, 5b, and circuit units 1a, 1b, 3a, 3b connected to each of the divided main buses 5a, 5b and provided for connection with external circuits. In this case, one end of each circuit unit is connected to each of the divided main buses, 5a, 5b, and the other end includes disconnectors 11a, 11b connected to each other. Furthermore, a circuit unit 4 is provided for connection with external circuits. Then, each disconnector 11a, 11b and the circuit unit 4, including the disconnectors, are arranged in line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas insulated substation, and more particularly to a disconnector provided for connecting an external circuit to a main bus divided into two via a bus split line unit. The present invention relates to a gas insulated substation facility including a line unit including the same.

[0002]

2. Description of the Related Art FIGS. 8 and 9 show an example of conventional gas-insulated substation equipment used in a substation or a power plant.

[0003] As shown in these figures, the main bus 105
a, 105b are ground switches 108a, 108a, 10
8b, a circuit breaker 109, and disconnecting switches 110, 110, and the like. Each of the divided main buses 105a and 105b has a bushing 106, a lightning arrester 107, grounding switches 108a, 108a and 108b,
One end of each of the transmission line units 101a and 101b including the circuit breaker 109 and the disconnector 110 is connected, and the other end is connected to a transmission line (not shown).
Further, grounding switches 108a, 108a, circuit breaker 109,
One end of each of transformer lines 103a and 103b including a disconnector 110 and a cable head 112 is connected, and the other end is connected to a transformer (not shown).
As described above, the transmission line units 101a and 101b and the transformer line units 103a and 103b are arranged in two systems, one for each main bus, with the bus division line unit 102 interposed therebetween.

[0004]

However, in the above-mentioned prior art, the line units such as the transmission line unit and the transformer line unit are divided symmetrically into main buses on both sides of the bus division line unit. Therefore, the installation area of each line unit becomes large, and a large site is required for the entire gas insulated substation equipment.

[0005] Further, when an external circuit such as a transformer is to be provided in a substation facility, it is necessary to provide a further transformer line unit for each main bus, thereby requiring a larger installation area. The line unit is
Since the switchgear such as a circuit breaker and a disconnecting switch is provided, the cost of the facility is increased.

In view of the above-mentioned various problems, an object of the present invention is to improve the connection and arrangement of various line units with respect to a main bus in gas-insulated substation facilities such as substations and power plants. In addition to reducing the installation area, the number of switching devices and connection buses constituting the line unit is reduced, and the cost of the substation equipment is reduced.

[0007]

In order to achieve the above object, the present invention employs the following means.

A plurality of divided main buses, a bus division line unit for connecting the divided main buses, and each of the divided main buses are provided for connection to an external circuit. In a gas-insulated substation facility consisting of a plurality of line units, one end of each is connected to each of the divided main buses, and the other end includes a plurality of disconnectors connected to each other to connect to an external circuit. A line unit is provided, and the disconnectors and the line unit including the disconnector are linearly arranged.

A plurality of divided main buses, a bus division line unit for connecting the divided main buses,
A plurality of line units connected to each of the divided main buses and provided for connection to an external circuit, in a gas-insulated substation facility comprising: Arranged in a position overlapping in parallel, and in the overlapping position, the bus section line unit;
A line unit including a plurality of disconnectors connected at one end to each of the divided main buses and the other end connected to each other, and provided for connection to an external circuit, is provided. And

Further, in the gas insulated substation equipment according to any one of claims 1 and 2, the bus split line unit and one end of each of the bus split line units are connected to each of the divided main buses, A circuit unit includes a plurality of disconnectors connected to each other on the other end side, and a line unit provided for connection to an external circuit is disposed in a direction substantially perpendicular to the axis of the main bus.

Further, in the gas insulated substation equipment according to any one of claims 1 to 3, the line unit including the disconnector is a transformer line unit.

A plurality of divided main buses, a bus division line unit for connecting the divided main buses,
A plurality of line units connected to each of the divided main buses and provided for connection to an external circuit, in a gas-insulated substation facility comprising: the divided main buses and the bus segment line units; A connection bus that is arranged linearly, is arranged in parallel with the main bus, and connects the divided main buses, and is provided to be branched from an intermediate portion of the connection bus and connected to an external circuit. And a line unit provided.

According to a fifth aspect of the present invention, the line unit provided for branching from an intermediate portion of the connection bus and connected to an external circuit is provided in a direction substantially perpendicular to an axis of the connection bus. It is characterized by being arranged in.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a circuit diagram showing the circuit connection of the gas insulated substation equipment according to the present embodiment, and is a single-line connection diagram showing three phases by single lines. FIG. 2 is an arrangement of the gas insulated substation equipment according to the present embodiment. FIG.

As shown in these figures, main buses 5a, 5a
b are arranged in parallel so that a part may overlap each other. The portions of the main buses 5a and 5b arranged in parallel with each other overlap each other, and the grounding switches 8a,
8a, circuit breaker 9, and disconnection line units 11a, 11b, etc.
Are connected in a direction substantially perpendicular to.

A bushing 6, a lightning arrester 7, a grounding switch 8a, 8a,
One end of each of the transmission line units 1a and 1b composed of a circuit breaker 9b, a circuit breaker 9, a disconnecting switch 10, and the like is connected one by one.

Each of the divided main buses 5a, 5b has one end of a transformer line unit 3a, 3b composed of a grounding switch 8a, 8b, a circuit breaker 9, a disconnector 10, a cable head 12, and the like. Each is connected one by one.

Further, disconnecting devices 11a and 11b, one ends of which are connected to the main buses 5a and 5b, respectively, and the other ends of which are connected to each other, are connected to the portions of the main buses 5a and 5b arranged in parallel so as to overlap each other. One end of the transformer circuit unit 4 including the switches 8a and 8b, the circuit breaker 9, the cable head 12, and the like is connected in a direction substantially perpendicular to the main buses 5a and 5b.

The other end of each of the transmission line units 1a, 1b and the transformer line units 3a, 3b, 4 is connected to a transmission line or a transformer (not shown).

In the present embodiment, as shown in FIG. 2, the bus segment line unit 2 and the transformer line unit 4 are arranged in parallel with the main buses 5a and 5b such that the main buses 5a and 5b overlap. Each of the three phases is arranged in parallel in a direction substantially perpendicular to the arranged portion.

FIG. 3 is a sectional view of the gas insulated substation shown in FIG.
It is sectional drawing seen from -A, and shows the side sectional drawing of the transmission line unit 1a.

FIG. 4 is a sectional view of the gas-insulated substation shown in FIG.
FIG. 4 is a cross-sectional view as viewed from −B, and shows a side cross-sectional view of the bus segmented line unit 2.

FIG. 5 is a view showing the gas-insulated substation equipment C shown in FIG.
It is sectional drawing seen from -C, and shows the side sectional drawing of the transformer circuit unit 4. FIG.

As described above, according to the present embodiment, the bus division line unit 2 is arranged in a direction substantially perpendicular to a portion where the main buses 5a and 5b are arranged in parallel so as to overlap with each other. As a result, the main buses 5a and 5b do not become long, and the substation equipment can be made compact.

The transformer line unit 4 is connected to the main bus 5
Since the transformer line unit 4 and the main buses 5a and 5b can be compactly configured because they are arranged in a direction substantially perpendicular to the part arranged in parallel so that the transformer line units 4 and 5a overlap. Since it can be used in common for both main buses 5a and 5b, the number of transformer circuit units can be reduced, and the installation area of substation equipment can be reduced.
Since the number of expensive transformer line units can be reduced, the cost of the entire substation facility can be reduced.

Next, a second embodiment of the present invention will be described with reference to FIGS.

FIG. 6 is a circuit diagram showing the circuit connection of the gas insulated substation equipment according to the present embodiment, and is a single-line diagram showing three phases by single lines. FIG. FIG.

As shown in these figures, the main buses 5a, 5a
b is a grounding switch 8a, which separates both main buses 5a, 5b.
8a, 8b, 8b, the circuit breaker 9, the disconnecting switches 10, 10 and the like are connected almost linearly to the bus section line unit 2.

The main buses 5a and 5b adjacent to the bus division line unit 2 are provided with disconnectors 11a and 11b.
Are connected to each other, and the other end is connected to both ends of a connection bus 13 arranged in parallel with the main buses 5a, 5b via grounding switches 8a, 8a, respectively. From an intermediate portion of the connection bus 13, one end of the transformer line unit 4, which is arranged substantially perpendicular to the connection bus 13 and includes a circuit breaker 9, a ground switch 8 a, a cable head 12, and the like, is connected. A transformer (not shown) is connected to the end side.

As shown in FIG. 7, the main buses 5a and 5b and the main buses 5a and 5b are linearly arranged on either side of the bus division line unit 2 in which the three phases are arranged in parallel.

Main buses 5a, 5b of other transmission line units 1a, 1b and transformer line units 3a, 3b
The connection and arrangement for are substantially the same as the configuration shown in FIG.

As described above, according to the present embodiment, the connection bus 13 is compactly arranged adjacent to and parallel to the main buses 5a, 5b, and the transformer line unit 4 is formed at a substantially right angle from an intermediate portion of the connection bus 13. The two main buses 5a,
5b and the transformer line unit 4 can be compactly arranged, and the transformer line unit 4 is connected to both main buses 5
a, 5b can be used in common, so that the number of transformer circuit units can be reduced, the installation area of the transformer equipment can be reduced, and the cost of transformer equipment can be reduced because expensive transformer circuit units can be reduced. Can be reduced.

[0034]

According to the present invention, there is provided a line unit including a plurality of disconnectors each having one end connected to each of the divided main buses and the other end connected to each other, and provided for connection to an external circuit. By arranging each disconnector and the line unit including the disconnector in a straight line, conventionally, the required installation area of the gas insulated switchgear constituting the line unit that required the space for a plurality of lines can be reduced, Further, the number of the gas insulated switchgears can be reduced, and the cost of the gas insulated substation equipment can be reduced.

[Brief description of the drawings]

FIG. 1 is a single-line diagram showing circuit connections of the gas-insulated substation equipment according to the first embodiment of the present invention and showing three phases by single-line connections.

FIG. 2 is a plan view showing an arrangement of the gas-insulated substation equipment according to the first embodiment.

3 is a cross-sectional view of the gas-insulated substation facility shown in FIG. 2, as viewed from AA, and shows a side cross-sectional view of the transmission line unit 1a.

4 is a cross-sectional view of the gas insulated substation facility shown in FIG.

5 is a cross-sectional view of the gas insulated substation facility shown in FIG. 2 as viewed from CC, and shows a side cross-sectional view of the transformer circuit unit 4. FIG.

FIG. 6 is a single-line diagram showing the arrangement of the gas-insulated substation equipment according to the second embodiment and showing three phases by single-line connections.

FIG. 7 is a plan view showing a circuit connection of the gas insulated substation equipment according to the second embodiment.

FIG. 8 is a single-line diagram showing a circuit connection of the gas-insulated substation equipment according to the related art.

FIG. 9 is a plan view showing an arrangement of gas-insulated substation equipment according to the related art.

[Explanation of symbols]

 1a, 1b Transmission line unit 2 Bus division line unit 3a, 3b, 4 Transformer line unit 5a, 5b Main bus 6 Bushing 7 Lightning arrester 8a, 8b Ground switch 9 Circuit breaker 10, 11a, 11b Disconnector 12 Cable head 13 Connection bus

Claims (6)

[Claims] 1. A plurality of divided main buses, a bus division line unit for connecting the divided main buses, and a connection provided to each of the divided main buses for connection to an external circuit. A plurality of line units, and a plurality of line units, each including one end connected to each of the divided main buses and the other end connected to an external circuit, including a plurality of disconnectors. And a line unit including the disconnector and a line unit including the disconnector are arranged in a straight line. 2. A plurality of divided main buses, a bus division line unit for connecting the divided main buses, and a connection provided to each of the divided main buses for connection to an external circuit. In the gas insulated substation equipment consisting of a plurality of line units, a part of each of the divided main buses is arranged at a position overlapping substantially in parallel with each other, and at the overlapping position, the bus division line unit, A line unit including a plurality of disconnectors connected at one end to each of the divided main buses and the other end connected to each other, and provided for connection to an external circuit, is provided. And gas insulated substation equipment. 3. The method according to claim 1, wherein
In one claim, the bus division line unit, and includes a plurality of disconnectors, one end of each of which is connected to each of the divided main bus, the other end is connected to each other, to connect to an external circuit A gas-insulated substation facility, wherein the provided line unit is disposed in a direction substantially perpendicular to the axis of the main bus. 4. The method according to claim 1, wherein
The gas-insulated substation equipment according to claim 3, wherein the line unit including the disconnector is a transformer line unit. 5. A plurality of divided main buses, a bus division line unit for connecting the divided main buses, and a connection provided to each of the divided main buses for connection to an external circuit. In the gas insulated substation equipment consisting of a plurality of line units, the divided main bus and the bus division line unit are linearly arranged, and the divided main bus and the divided bus unit are arranged in parallel to the main bus. A gas insulated substation facility comprising: a connection bus connecting main buses; and a line unit provided to branch off from an intermediate portion of the connection bus and connected to an external circuit. 6. The line unit according to claim 5, wherein a line unit provided for branching from an intermediate portion of the connection bus and connected to an external circuit is provided in a direction substantially perpendicular to an axis of the connection bus. Gas insulated substation equipment characterized by being arranged in a substation.