JP2872007B2 - Gas insulated switchgear - Google Patents

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 having an improved arrangement of equipment and a main bus when a plurality of power transmission routes are juxtaposed.

[0002]

2. Description of the Related Art In recent substations and switchyards,
Due to difficulties in obtaining land and countermeasures against salt damage, high-performance gas insulated switchgear using an insulating medium such as SF ₆ gas having excellent insulation and arc extinction properties are often used. In such a gas insulated switchgear, circuit breakers, disconnectors, or other devices are arranged in a three-dimensional manner, the intervals between the devices are reduced, and the site area is significantly reduced. FIG. 18 shows a single-line diagram of such a conventional gas insulated switchgear based on, for example, the device disclosed in Japanese Patent Application Laid-Open No. 63-277408.

In the drawing, reference numeral 81 denotes a first bus, and a first A
It is composed of a section 81a and a first B section 81b. 82 is a second bus, a second A section 82a and a second B section 82b.
It is composed of 101 is a first bus division unit,
The disconnector 531a, the circuit breaker 62a, and the disconnector 431b are sequentially connected in series. The first bus division unit 101
Is connected between the first A section 81a and the first B section 81b. Reference numeral 102 denotes a second bus division unit, and the disconnector 53
2a, a circuit breaker 62b, and a disconnector 532b are sequentially connected in series. The second bus section unit 102 is connected between the second A section 82a and the second B section 82b.

A first transformer unit 103 has a first A
Disconnector 52 connected in series between section 81a and the second A section
3a, 524a, a circuit breaker 63a, a disconnector 54a, and a transformer 13a connected in series from the disconnectors 523a, 524a. 104 is a second transformer unit, the first B division
81b disconnector 523 connected in series with the second B section 82b
b, 524b, a circuit breaker 63b, a disconnector 54b, and a transformer 13b which are sequentially connected between the two disconnectors 523b, 524b. 21a and 21b are lead terminals of the transformers 13a and 13b. Reference numeral 105 denotes a first line unit, which includes disconnectors 521a, 52a connected in series between the first A section 81a and the second A section 82a.
2a, a circuit breaker 61a and a disconnector 51a connected in series from the two disconnectors 521a, 522a. Reference numeral 106 denotes a second track unit, which includes a first B section 81b and a second B section.
Disconnectors 521b, 522b connected in series with 82b, both disconnectors
A circuit breaker 61b and a disconnecting switch 51b are connected in series from 521b, 522b.

Reference numeral 107 denotes a third line unit, and the first A
Disconnectors 521c, 522c, both disconnectors 521c, 522 connected in series between the section 81a and the second A section 82a.
The circuit breaker 61c and the disconnecting switch 51c are sequentially connected in series from the point c. Reference numeral 108 denotes a fourth line unit, which is sequentially connected in series from the disconnectors 521d and 522d connected in series between the first B section 81b and the second B section 82b, and between the disconnectors 521d and 522d. It comprises a circuit breaker 61d and a disconnecting switch 51d. 22
a, 22b, 23a, and 23b are line units 105 to
The bushings are connected to each other. 201
Is the first power transmission route, the first line unit 105 and
The first transmission line 22 via the second line unit 106
0a and the second transmission line 230a are in the same phase as two lines.
Send power to the end. 202 is a second power transmission route,
Via the track unit 107 and the fourth track unit 108
And the third transmission line 220b and the fourth transmission line 230
The power is transmitted to the other same partner end as two lines b . 7a,
7b, 7c, 7d are lightning arresters, 41a, 41b, 41c,
41d, 42a, 42b, 42c, 42d, 43a, 4
3b, 44a, 44b, 45a, 45b, 46a, 46
b, 47a and 47b are grounding switches.

FIG. 19 is a configuration diagram showing the equipment arrangement of FIG. 19 to 23, both buses 81 and 82 are arranged in parallel, and bus segment units 101 and 102 are arranged between each A section 81a and 82a and each B section 81b and 82b in parallel with each bus 81 and 82. ing. Each track unit 105-108 is connected to each bus 8
A first line unit 105, a third line unit 107, a second line unit 106, and a fourth line unit 108 are arranged in this order on one side of the first and second lines 82. And a bushing 22a for the air transmission line 220a of the first power transmission route 201.
And the first line unit 105 are connected by a connection bus 105a. A connection bus 10 partially buried underground (shown by a broken line) between the bushing 23a for the second transmission line 230a in the air of the first power transmission route 201 and the second line unit 106.
Connected with 6a. The bushing 22b of the third power transmission line 220b of the second power transmission route 202 and the third line unit 107 are connected by a connection busbar 107a intersecting with a connection busbar 106a at a portion buried underground (shown by a broken line). doing. Bushing 23b for the fourth transmission line 230b of the second transmission route 202
And the fourth line unit 108 are connected by a connection bus 108a. Reference numeral 83 denotes an expansion joint that reduces the effects of thermal expansion and contraction of the busbars 81 and 82.

Next, the operation will be described. In FIG. 18, a first power transmission route 201 and a second power transmission route 202 are juxtaposed with each bus division unit 101, 102 interposed therebetween.

Further , each of the power transmission routes 201 and 202
A first transmission line 22a and a third transmission line 2
20b is the first A section 81a of the first main bus 81 and the
The second main bus 82 is connected to the second A section. Soshi
The second transmission line 230a and the fourth transmission line 230
b is the first B section 81b of the first main bus 81 and the second
The main bus 82 is connected to the second B section 82b. Immediately
The second transmission line 230a and the third transmission line 220b
Are crossed. In the above configuration, the disconnectors 521a to 521a to
By selectively operating the open / close state of 521d and 522a to 522d , the current of each power transmission route 201, 202 can be changed to each A section 81a, 82a and each B section 81b, 8
The distribution minute to 2b.

In addition, when one of the circuit breakers 62a, 62b of the bus segment units 101, 102 fails, the circuit breakers 62a, 62b
Even if the corresponding section of the main bus 81, 82 connected to the sub-station stops operating, the operation of one transmission line connected to the other section can be maintained, so that the transmission of each transmission route does not stop , Stable supply.

FIG. 24 shows another example of a single-phase connection diagram of a gas-insulated switchgear larger than that of FIG. In the figure, FIG.
8 are denoted by the same reference numerals. 109 is a third transformer unit, comprising a first A section 81a and a second A section 82a.
a disconnector 523c, 524c connected in series between the two disconnectors 523c, 524c, and a circuit breaker 63c, a disconnector 54c, and a transformer 13c sequentially connected in series between the two disconnectors 523c, 524c. 110 is fourth
The first B section 81b and the second B section
82b and the disconnectors 523d and 524d connected in series between the two disconnectors 523c and 524c.
d, disconnector 54d and transformer 13d. 111
Is a fifth track unit, the first A section 81a and the second A section
It comprises disconnectors 521e and 522e connected in series with the section 82a, and a circuit breaker 61e and a disconnector 51e sequentially connected in series between the two disconnectors 521e and 522e.

Reference numeral 112 denotes a sixth line unit, which is a disconnector connected in series between the first B section 81b and the second B section 82b.
It comprises a circuit breaker 61f and a disconnector 51f which are sequentially connected in series from between 521f, 522f and both disconnectors 521f, 522f. Reference numeral 113 denotes a seventh line unit, and disconnectors 521g and 522 connected in series between the first A section 81a and the second A section 82a.
g, and a disconnector 61g and a disconnector 51g which are sequentially connected in series from between the disconnectors 521g and 522g.

Reference numeral 114 denotes an eighth line unit, which is a disconnector connected in series between the first B section 81b and the second B section 82b.
The circuit breaker 61h and the disconnector 51h are sequentially connected in series from 521h, 522h, and both disconnectors 521h, 522h. 115 is a first bus connection unit, which is a first A section
It comprises a disconnector 525a, a circuit breaker 64a and a disconnector 526a which are connected in series between 81a and the second A section 82a. 116 is a second bus connection unit, which is a first B section 81
and a disconnector 525b, a circuit breaker 64b, and a disconnector 526b which are sequentially connected in series between b and the second B section 82b.

Bushings 24a, 24b, 25a, and 25b are connected to the line units 111 to 114, respectively. Reference numeral 203 denotes a third power transmission route, in which the two line units 111 and 112 have two transmission lines 240a and 250.
Power is transmitted to the same other end as a. Reference numeral 204 denotes a fourth power transmission route, in which the two line units 113 and 114 transmit power to the same other end as two transmission lines 240b and 250b.
7e, 7f, 7g, 7h are lightning arresters. 47c, 47
d, 401a, 401b, 402a, 402b, 403
a, 403b, 404a, 404b, 405a, 405
b, 406a and 406b are grounding switches. First sending
The first transmission line 220 a of the electric route 201 is connected to the disconnector 52.
1a to the first A section 81a and the second
The electric line 230a is connected to the second B section via the disconnector 522b.
82b, and the third power transmission route 202
The electric line 220b is connected to the second A section via the disconnector 522c.
82a, and the fourth transmission line 230b is connected to the disconnector 5
It is connected to the first B section 81b via 21d.
Further, the first transmission line 220a is connected via a disconnector 522a.
And connected to the second A section 82a, and the second transmission line 230
a is connected to the first B section 81b via the disconnector 521b
You can also. Switch disconnector at the same time for each transmission line
Instead, the connection can be switched to the other bus section. Less than
As shown above, two sets of
Each of the four transmission lines in the transmission route has four bus sections
Are connected one by one.

FIG. 25 and FIG. 26 are configuration diagrams showing the equipment arrangement of FIG. In FIG. 25, the following devices are added to FIG. Each of the transformer units 109 and 110 and the bus connection units 115 and 116 are composed of transformer units 103 and 104.
And juxtaposed. Each of the line units 111 to 114 is juxtaposed with each of the transformer units 103, 104, 109, 110 on the opposite side of each of the buses 81, 82 with the line units 105 to 108. Bushing the fifth transmission line 240a of the third transmission route 203
24a and the fifth track unit 111, a connection bus 111a
Connected with. A connection bus 11 partially buried underground (shown by broken lines) between the bushing 25a of the sixth transmission line 250a of the third power transmission route 203 and the sixth line unit 112.
Connected with 2a. The bushing 24b of the seventh transmission line 240b of the fourth power transmission route 204 and the seventh line unit 113 are connected by a connection bus 113a partially buried underground. A bus connecting the bushing 25b of the eighth transmission line 250b of the fourth power transmission route 204 and the eighth line unit 114
Connected with 114a.

[0015]

Since the conventional gas insulated switchgear is configured as described above, the connecting buses cross over the ground and underground and are arranged in a wide range. In addition, the crossover requires a longer connecting bus, which increases construction costs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and eliminates a complicated structure in which connecting buses cross each other and prevents a connecting bus from becoming long. It is intended to provide.

[0017]

According to the gas insulated switchgear of the present invention, the first main bus is divided into a first A section and a first B section by a first bus section unit, and the second main bus is divided into two sections. Is divided into a second A section and a second B section by a second bus section unit, and a first transformer unit is connected to the first A section and the second A section, A second transformer unit is connected to the first B section and the second B section, and a first power transmission route is connected from the first A section and the second A section via the first line unit. Transmitting power to the first transmission line, transmitting power from the first B section and the second B section to the second transmission line of the first power transmission route via the second line unit, and performing a first A section; Power from the second section A to the third transmission line of the second power transmission route via the third line unit, and from the first B section and the second B section. Through the fourth line unit to the fourth transmission line of the second transmission route is to power transmission.

[0018] Claims 1 and 2 define the first main bus.
Return to the first A section and return to the first A section
1 is arranged in parallel with the B section, and the second main bus is
Return to the second section A and second B section at the line section unit
And the second line unit, the second line unit, the third line unit, and the fourth line unit, which are arranged adjacent to each main bus in this order.

In a third aspect, the first A
The main buses are horizontally arranged in the order of the section, the second section A, the second section B, and the first section B, and the first line unit and the second line unit are arranged on the side adjacent to the first section A. , A third track unit and a fourth track unit.

According to a fourth aspect of the present invention, in the first aspect, the first A section and the first B section of the first main bus are arranged in parallel,
The second A section of the second main bus below the first A section,
The second B section of the second main bus is arranged in parallel below the first B section.

The fifth aspect is such that the first A section, the first B section, the second A section, and the second B section are parallel to each other.
A first main bus and a second main bus are arranged in upper and lower layers, and a first bus division unit and a second bus division unit are arranged opposite to each other in the vicinity of both buses with the main bus interposed therebetween; The unit and the third line unit are arranged opposite to each other in the vicinity of both buses with both main buses interposed therebetween, and the second line unit and the fourth line unit are arranged opposite to each other in the vicinity of both buses with both main buses interposed therebetween It was done.

In a sixth aspect of the present invention, in the fifth aspect, a first A section and a first B section of the first main bus, and a second A section and a second B section of the second main bus are provided. Are arranged in the horizontal direction.

According to a seventh aspect, in the fifth or sixth aspect, the first bus division unit and the second bus division unit are located at positions where the first line unit and the third line unit are opposed to each other. And a position where the second line unit and the fourth line unit are opposed to each other.

According to an eighth aspect of the present invention, in the fifth to seventh aspects, the connection is made between the second transmission line and the second line unit and between the fourth transmission line and the fourth line unit. The bus is arranged so as to intersect with a thermal expansion joint arranged in each main bus in order to reduce the influence of thermal expansion and contraction of each main bus.

In a ninth aspect, the first main bus is defined as a first bus section.
Turned back by the minute unit, the first A section and the first B section
Are arranged in parallel, and the second main bus is connected to the second bus division unit.
And turn the second A section and the second B section in parallel.
Arrangement, and the first line unit, a second line unit, arranged adjacent to each main bus in the order of the third line unit and the fourth line unit, the first busbar connection unit first Category A And the second bus connection unit is disposed near the first and second B sections.

The tenth aspect is such that the first A section, the first B section, the second A section, and the second B section are parallel to each other.
A first main bus and a second main bus are arranged in upper and lower layers, and a first bus division unit and a second bus division unit are arranged opposite to each other in the vicinity of both buses with both main buses interposed therebetween; The third line unit and the third line unit are opposed to each other in the vicinity of both buses with both main buses interposed therebetween, and the second line unit and the fourth line unit are located in the vicinity of both main buses with both main buses interposed therebetween. , The first bus connection unit is disposed in the vicinity of the first A section and the second A section, and the second bus connection unit is disposed in the first section.
Are arranged in the vicinity of the B section and the second B section.

The eleventh aspect is such that the first A section, the first B section, the second A section, and the second B section are parallel to each other.
The first main bus and the second main bus are arranged in the upper and lower layers, and the first bus division unit and the second bus division unit are located near both ends of both main buses on one end side of both main buses. The first line unit and the third line unit are arranged opposite to each other with both main buses interposed therebetween, and the second line unit and the fourth line unit are interposed between both main buses. , The two bus connecting units are arranged opposite each other with both main buses interposed therebetween, and each transformer unit is arranged on the other end side of each main bus in parallel with each main bus.

In a twelfth aspect, the first aspect is the first aspect.
The position where the first line unit and the third line unit are opposed to each other, and the position where the second line unit and the fourth line unit are opposed to each other. It is arranged between and.

A thirteenth aspect is the first aspect according to the eleventh aspect.
The position where the first line unit and the third line unit are opposed to each other, and the position where the second line unit and the fourth line unit are opposed to each other. It is arranged between and.

[0030]

According to the gas insulated switchgear of the present invention,
A plurality of main buses are folded back at the bus division unit and arranged in parallel with each other, and the transmission lines of each power transmission route are routed through the line units installed on the power transmission route side, and A and B of the turned back main buses.
Since it can be connected to both sections and can be electrically connected,
There is no need to cross the connection bus between the bushing connecting to the transmission line of the two transmission routes of the specific combination and the line unit.

Further, since the bus section unit and the track unit are folded and arranged so as to be opposed to each other with both sections A and B arranged parallel to each other, the overall configuration becomes compact.

Also, since the main bus is extended in the longitudinal direction, the main bus is bent to both sides at right angles, and the transformers are arranged side by side.
Enables simplification of the low-pressure side of the arrangement of the main bus and equipment of the transformer is also improved flexibility of substation overall design even better space factor.

[0033]

[Embodiment 1] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing the configuration of the gas insulated switchgear according to the solid line diagram of FIG. 2 to 4 are front views showing the main part of FIG. 1 to 4,
The first A section 81a of the first main bus 81, the second A section of the second main bus 82, the second B section 82b of the second main bus 82, and the first of the first main bus 81 Are arranged horizontally and parallel in the order of section B. The first bus division unit 101 and the second bus division unit 102 are composed of A divisions 81a and 82a and B divisions 81, respectively.
b, 82b. First transformer unit
103 and the second transformer unit 104 are connected to each main bus 81, 82
Are arranged on one side so as to extend in a direction perpendicular to the main buses 81 and 82.

Each transmission line 220 of each transmission route 201, 202
a, 230a, 220b, and 230b are provided on the other side of each main bus 81, 82, respectively.
The first transmission line 220a of the power transmission route 201, the second transmission line 230a, the third transmission line 220b of the second power transmission route 202, and the fourth transmission line 230b are arranged in this order. Each track unit 105-108 is connected to each transmission line 220a, 230a, 220b, 23
0b and each main bus 81, 82, the first line unit 105
, The second track unit 106, the fourth track unit 108
And the third line unit 107. Each of the track units 105 to 108 is connected to a connection bus 105a, 10
It is connected to each transmission line 220a, 230a, 220b, 230b by 6a, 107a, 108a. The thermal expansion joint 83 is appropriately arranged in the middle of each of the buses 81 and 82 in order to reduce the influence of thermal expansion and contraction of each of the buses 81 and 82.

In the above embodiment, the first line unit
105, second line unit 106, fourth line unit 10
8 and the third line unit 107 are described in this order. However, the first line unit 105 and the second line unit 106 are adjacent to each other, and the third line unit 107, the fourth line unit 108, Are arranged adjacent to each other,
It is not always necessary to follow the order of the above embodiments.

In the above embodiment, since there is no crossing arrangement of the connecting buses, the connecting buses can be shortened.

Embodiment 2 FIG. FIGS. 5 to 8 are a plan view and a front view of each part showing another embodiment of the configuration based on the solid line diagram in FIG. In the figure, a first A section 81a of a first main bus 81 and a first B section
The section 81b and the second main bus 82 are arranged in parallel.
A section 82a is arranged below the first A section 81a, and the second B section 82b is arranged below and parallel to the first B section 81b. The first line unit 105 and the second line unit 106 extend in a direction perpendicular to the main buses 81 and 82 and are arranged to face each other with the main buses 81 and 82 interposed therebetween.
Third track unit 107 and fourth track unit 108
Means extending in a direction perpendicular to the main buses 81 and 82 and opposed to each other with the main buses 81 and 82 interposed therebetween. Each of the line division units 101 and 102 extends in a direction perpendicular to each of the main buses 81 and 82, and is arranged to face each of the main buses 81 and 82. Each transformer unit 103, 104 is connected to each main bus 8
On the other side of the power transmission routes 201 and 202 with the power buses 1 and 82 interposed therebetween, they are arranged to extend in a direction perpendicular to the main buses 81 and 82. Each main bus 81,8 between each unit 101-108
2 has an expansion joint 83 to reduce the effect of thermal expansion and contraction.
Is provided. The connection buses 106a and 108a are connected between the line units 106 and 108 and between the line units 105 and 10 respectively.
7 are arranged so as to intersect with the expansion joint 83.
Therefore, the main buses 81, 8 are connected so that the connection buses 106a, 108a do not cross each of the line units 105-108.
The main buses 81 and 82 do not need to be long even if they straddle two.

Embodiment 3 FIG. FIG. 9 is a plan view showing another embodiment of the present invention. The difference from FIG. 5 is that the bus segment units 101 and 102 are arranged between the line units 105 and 106 and the line units 107 and 108, respectively.

Embodiment 2 above. And Example 3. According to
Since there is no intersection of the connection bus to the first power transmission route 201 and the second power transmission route 202, the connection bus can be shortened.

Embodiment 4 FIG. Embodiment 2 above. And Example 3.
In FIG. 10, the length of the connection buses 106a and 108a can be further reduced by setting the connection buses 106a and the connection buses 108a at target positions in FIG.

In the second embodiment described above. Embodiment 3 FIG. And Example 4. Then, the first A section 81a and the second A section 82a are
Stack the first B section 81b and the second B section 82b into two sections.
We explained stacking, but each category 81a, 82a
, 81b and 82b can be expected to have the same effect even if they are arranged in the horizontal direction.

Embodiment 5 FIG. FIG. 11 is a plan view of a gas-insulated switchgear according to another embodiment of the present invention, which is shown by a single-line diagram in FIG. In FIG. 11, the power transmission routes 203 and 204, the line units 111 to 114,
Transformer units 109, 110 and busbar connection unit 115,
116 was added.

Embodiment 6 FIG. FIG. 12 is a plan view of a gas insulated switchgear according to another embodiment of the present invention, which is shown by a single-line diagram in FIG. 12, the power transmission routes 203 and 204, the line units 111 to 114,
Transformer units 109, 110 and busbar connection unit 115,
116 was added.

Embodiment 7 FIG. FIG. 13 is a plan view of a gas-insulated switchgear according to another embodiment of the present invention, which is shown by a single-line diagram in FIG. In the figure, across each main bus 81, 82,
Each bus connection unit 115, 116, each bus division unit 101
, 102 and the respective line units 111 to 114, 105 to 108 are opposed to each other. The power transmission routes 201 and 202 face the respective line units 111, 105, 113 and 107, and the power transmission routes 203 and 204 correspond to the respective line units 112, 106, 111 and
It is arranged facing 105. Further, each transformer unit 103, 109 is connected to both A buses 81a, 82a of both main buses 81, 82.
In the extended position of each track unit 111, 113, 105,
It is arranged to be perpendicular to 107. Transformer units 104 and 110 are both B sections 81 of both main buses 81 and 82
b, 82b are extended, and each track unit 106, 108
, 112, 114 so as to be at right angles. By arranging in this way, the bushing of the power transmission lead-out section can be divided into two parts and the distance between each unit can be shortened, so that the connection bus is shortened.

Embodiment 8 FIG. FIG. 14 is a plan view showing another embodiment of the present invention. 15 to 17 are front views showing the main part of FIG. FIG. 14 shows the main buses 81 and 82 of the phase separated type, and the main buses 81 and 82 of FIG. 12 correspond to the three-phase collective type.

In each of the above embodiments, each main bus 81, 82
Are divided by the bus division units 101 and 102 and arranged in parallel, and each line unit is arranged near each main bus.
There are no crossing points between bus section units.

In each of the above embodiments, the connection bus connecting each line unit and each bushing is buried underground (a portion shown by a broken line in the drawing). The effect can be expected.

[0048]

As described above, according to the present invention, the first
Of the main bus at the first bus segmenting unit
A section and the first B section are arranged in parallel, and the second main bus
Is folded back by the second bus section unit to form the second A section
The second B section is arranged in parallel, the first line unit is adjacent to the second line unit, the third line unit is adjacent to the fourth line unit, and each line unit is connected to each main unit. By arranging it adjacent to the bus, the space between the bus section unit and the track unit can be effectively utilized, and the overall occupied area can be reduced.

Further, the first bus division unit and the second bus division unit are arranged facing each other in the vicinity of both buses with the main bus interposed therebetween, and the first line unit and the second line unit are connected to both main buses. , The third line unit and the fourth line unit are disposed opposite to each other near both main buses with both main buses interposed therebetween, so that the bus line division unit and the line unit Space can be effectively utilized, and the total occupied area can be reduced.

Further, the first line unit and the third line unit are arranged between each transmission line and each main bus, and
And the fourth line unit are disposed on opposite sides of each main bus, between the first line unit and the third line unit, and between the second line unit and the fourth line unit. A thermal expansion joint is arranged in each main bus between the second transmission line and the second line unit and between the fourth transmission line and the fourth line unit. By arranging the connection bus so as to cross each thermal expansion joint above each thermal expansion joint, the portion where the main bus and the connection bus cross each other can use above the thermal expansion joint, so that the main bus becomes longer. Can be prevented.

The first A section, the first B section, and the second
So that the A section and the second B section are parallel to each other.
The bus and the second main bus are arranged in the upper and lower layers, and the first bus division unit and the second bus division unit are arranged opposite to each other in the vicinity of both buses with both main buses sandwiched between both main buses on one end side of both main buses. The first line unit and the third line unit are disposed opposite to each other across both main buses, and the second line unit and the fourth line unit are connected to each other across both main buses. By opposing in the vicinity, opposing both bus connection units across both main buses, and disposing each transformer unit in parallel with each main bus at the other end side of each main bus, the low voltage side of the transformer Since the wirings of the above are combined, the processing becomes easy.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a front view taken along line II-II of FIG.

FIG. 3 is a front view taken along the line III-III in FIG. 1;

FIG. 4 is a front view taken along the line IV-IV of FIG. 1;

FIG. 5 is a plan view showing another embodiment of the present invention.

FIG. 6 is a front view taken along line VI-VI of FIG. 5;

FIG. 7 is a front view taken along the line VII-VII of FIG. 5;

FIG. 8 is a front view taken along the line VIII-VIII in FIG. 5;

FIG. 9 is a plan view showing another embodiment of the present invention.

FIG. 10 is a plan view showing another embodiment of the present invention.

FIG. 11 is a plan view showing another embodiment of the present invention.

FIG. 12 is a plan view showing another embodiment of the present invention.

FIG. 13 is a plan view showing another embodiment of the present invention.

FIG. 14 is a plan view showing another embodiment of the present invention.

FIG. 15 is a front view taken along line XV-XV in FIG. 14;

FIG. 16 is a front view taken along line XVI-XVI of FIG. 14;

FIG. 17 is a front view taken along line XVII-XVII in FIG. 14;

FIG. 18 is a single-line diagram of the gas-insulated switchgear.

FIG. 19 is a plan view showing the arrangement of the conventional gas insulated switchgear according to the solid line diagram of FIG.

20 is a front view taken along line XX-XX of FIG.

FIG. 21 is a front view taken along line XXI-XXI of FIG. 19;

FIG. 22 is a front view taken along line XXII-XXII of FIG. 19;

FIG. 23 is a front view taken along line XXIII-XXIII of FIG. 19;

FIG. 24 is a single-line diagram of a large-scale gas-insulated switchgear.

FIG. 25 is a plan view showing the arrangement of the conventional gas insulated switchgear according to the solid line diagram of FIG.

FIG. 26 is a front view taken along line XXVI-XXVI of FIG. 25.

[Explanation of symbols]

81 First main bus 82 Second main bus 81a First A section 81b First B section 82a Second A section 82b Second B section 83 Thermal expansion joint 101 First bus section unit 102 Second Bus division unit 103 first transformer unit 104 second transformer unit 105 first line unit 106 second line unit 107 third line unit 108 fourth line unit 109 third transformer unit 110 Fourth transformer unit 111 Fifth line unit 112 Sixth line unit 113 Seventh line unit 114 Eighth line unit 115 First bus connection unit 116 Second bus connection unit 106a, 108a Connection bus 201 , 202, 203, 204 Transmission route 220a, 220b, 230a, 230b, 240a, 240b, 250a, 250b Transmission line

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02B 13/00-13/075

Claims (13)

(57) [Claims] 1. A first main bus is divided into a first A section and a first B section by a first bus division unit, and a second main bus is divided into a second section by a second bus division unit. Class A and second B
A first transformer unit is connected to the first A section and the second A section, and a second transformer is connected to the first B section and the second B section. A first unit B is connected to the first A section and the second A section, and power is transmitted from the first A section and the second A section to a first transmission line of a first power transmission route via a first line unit. From the second section B to the second transmission line of the first power transmission route via the second line unit, and the first section A and the second section
From the A section to the third transmission line of the second power transmission route via the third line unit, and from the first B section and the second B section via the fourth line unit. In the gas insulated switchgear for transmitting power to the fourth power transmission line of the second power transmission route, the first main bus is connected to the first bus section.
The first A section and the first
B section is arranged in parallel, and the second main bus is
At the above-mentioned second A section and
The second B section is disposed in parallel, the first line unit and the second line unit are adjacent to each other, the third line unit and the fourth line unit are adjacent to each other, A gas insulated switchgear, wherein each line unit is arranged adjacent to each main bus. 2. The gas insulation according to claim 1, wherein the first line unit, the second line unit, the third line unit, and the fourth line unit are arranged on the main buses in this order. Switchgear. 3. A first A section, a second A section, a second B section.
The main buses are horizontally arranged in the order of the section and the first section B, and the first line unit, the second line unit, the third line unit, and the fourth line are arranged on the side adjacent to the first section A. The gas insulated switchgear according to claim 1 or 2, wherein the unit is arranged. 4. A first A section and a first B section of a first main bus.
And the second section A of the second main bus is placed below the first section A, and the second section B of the second main bus is placed below the first section B. The gas insulated switchgear according to claim 1 or 2, wherein each of them is arranged in parallel. 5. A first main bus section is divided into a first A section and a first B section by a first bus section unit, and a second main bus is divided into a second section by a second bus section unit. Class A and second B
A first transformer unit is connected to the first A section and the second A section, and a second transformer is connected to the first B section and the second B section. A first unit B is connected to the first A section and the second A section, and power is transmitted from the first A section and the second A section to a first transmission line of a first power transmission route via a first line unit. From the second section B to the second transmission line of the first power transmission route via the second line unit, and the first section A and the second section
From the A section to the third transmission line of the second power transmission route via the third line unit, and from the first B section and the second B section via the fourth line unit. In the gas insulated switchgear for transmitting power to the fourth power transmission line of the second power transmission route, the first A section, the first B section, the second A section, and the second B section are separated from each other. Be parallel
Thus, the first main bus and the second main bus are arranged in upper and lower layers.
Arranged to, and the first busbar section unit and the second busbar section unit faces arranged in the vicinity of the both bus bars across the main bus, and the first line unit and the second line unit Are disposed opposite to each other in the vicinity of both buses with the main buses interposed therebetween, and the third line unit and the fourth line unit are disposed opposite to each other in the vicinity of the buses with the main buses interposed therebetween. A gas insulated switchgear characterized by the following. 6. A first section A and a first section B of a first main bus.
The gas insulated switchgear according to claim 5, wherein the section and the second A section and the second B section of the second main bus are arranged in a horizontal direction. 7. The first bus segment unit and the second bus segment unit are located at positions where the first line unit and the second line unit are opposed to each other, and at the third line unit and the fourth line unit. The gas insulated switchgear according to claim 5 or 6, wherein the gas insulated switchgear is arranged between the unit and a position where the unit is opposed to the unit. 8. A first line unit and a third line unit.
Between the first and third transmission lines, respectively.
And a second track unit and a fourth track unit
To a second transmission line and a fourth transmission line across each main bus.
And the first line unit and the first power transmission
And a second line connected to the line via a first connection bus.
Road unit and the second transmission line with each of the main buses.
Connected via a second connection bus which is substantially orthogonal to the third connection bus,
A third connection bus connecting the track unit and the third transmission line;
Through the fourth line unit and the fourth line unit.
A fourth connection mother which is substantially perpendicular to the main buses and the transmission line;
Connect via wires and place thermal expansion joints in each of the above main buses
The second connection bus and the fourth connection bus are
The gas insulated switchgear according to any one of claims 5 to 7, wherein the gas insulated switchgear is arranged so as to cross the thermal expansion joint . 9. The first main bus is divided into a first A section and a first B section by a first bus division unit, and the second main bus is divided into a second section by a second bus division unit. Class A and second B
The first A section and the second A section are connected by a first bus connecting unit, and the first B section and the second B section are connected to each other. A first bus unit and a third transformer unit are connected to the first A section and the second A section by a second bus connection unit, and the first B section is connected to the first B section. A second transformer unit and a fourth transformer unit are connected between the second B section and the first A section and the second A section via a first line unit. To the first power transmission line of the first power transmission route, and the second power transmission of the first power transmission route from the first B section and the second B section via the second line unit. Power to the line, the first A section and the second
From the A section to the third transmission line of the second power transmission route via the third line unit, and from the first B section and the second B section via the fourth line unit. In the gas insulated switchgear for transmitting power to the fourth power transmission line of the second power transmission route, the first main bus is connected to the first bus section.
The first A section and the first
B section is arranged in parallel, and the second main bus is
At the above-mentioned second A section and
The second section B is arranged in parallel with the first line unit, the second line unit, the fourth line unit, and the third line unit in the order of the main buses. And the first bus connection unit is connected to the first bus connection unit.
A gas insulated switchgear arranged in the vicinity of section A and the second section A, and the second bus connecting unit is arranged in the vicinity of the first section B and the second section B. . 10. A first main bus is divided into a first A section and a first B section by a first bus division unit, and a second main bus is divided into a second section by a second bus division unit. The first A section and the second A section are connected by a first bus connection unit, and the first A section and the second A section are connected to each other by a first bus connection unit;
B section and the second B section are connected by a second bus connection unit, and a first transformer unit and a third transformer are connected to the first A section and the second A section. A second transformer unit and a fourth transformer unit between the first B section and the second B section, and the first A section and the second A section. Power is transmitted from the second A section to the first transmission line of the first power transmission route via the first line unit, and the second line unit is transmitted from the first B section and the second B section. To the second power transmission line of the first power transmission route through the first A section and the second power transmission line.
From the A section to the third transmission line of the second power transmission route via the third line unit, and from the first B section and the second B section via the fourth line unit. In the gas insulated switchgear for transmitting power to the fourth power transmission line of the second power transmission route, the first A section, the first B section, the second A section, and the second B section are separated from each other. Be parallel
Thus, the first main bus and the second main bus are arranged in upper and lower layers.
And the first bus segment unit and the second bus segment unit are opposed to each other in the vicinity of the two buses with the two main buses interposed therebetween, and the first line unit and the second line unit are arranged. Are arranged opposite to each other in the vicinity of both buses with the main buses interposed therebetween, and the third line unit and the fourth line unit are arranged opposite to each other in the vicinity of the main buses with the main buses interposed therebetween. The first bus connection unit is disposed near the first A section and the second A section, and the second bus connection unit is connected to the first B section and the second section.
A gas insulated switchgear, wherein the second bus connection unit is disposed near the first B section and the second B section. 11. A first main bus is divided into a first A section and a first B section by a first bus division unit, and a second main bus is divided into a second section by a second bus division unit. The first A section and the second A section are connected by a first bus connection unit, and the first A section and the second A section are connected to each other by a first bus connection unit;
B section and the second B section are connected by a second bus connection unit, and a first transformer unit and a third transformer are connected to the first A section and the second A section. A second transformer unit and a fourth transformer unit between the first B section and the second B section, and the first A section and the second A section. Power is transmitted from the second A section to the first transmission line of the first power transmission route via the first line unit, and the second line unit is transmitted from the first B section and the second B section. To the second power transmission line of the first power transmission route through the first A section and the second power transmission line.
From the A section to the third transmission line of the second power transmission route via the third line unit, and from the first B section and the second B section via the fourth line unit. In the gas insulated switchgear for transmitting power to the fourth power transmission line of the second power transmission route, the first A section, the first B section, the second A section, and the second B section are separated from each other. Be parallel
Thus, the first main bus and the second main bus are arranged in upper and lower layers.
The first bus segment and the second bus segment are arranged on one end side of the main buses in the vicinity of the buses with the main buses interposed therebetween, and the first line unit is provided. And the second line unit are disposed opposite to each other in the vicinity of the two buses with the two main buses interposed therebetween, and the third line unit and the fourth line unit are connected to each other with the two main buses interposed therebetween. Opposingly disposed near the bus, the bus connection units are disposed opposite each other across the main buses, and the transformer units are disposed at the other end of the main buses in parallel with the main buses. A gas insulated switchgear characterized by the following. 12. The first bus segment unit and the second bus segment unit are located at positions where the first line unit and the second line unit are opposed to each other, and at a position where the third line unit and the fourth line unit are arranged. The insulated switchgear according to claim 11 , wherein the switch is arranged between the unit and a position where the unit is opposed to the unit. 13. The first bus connection unit and the second bus connection unit are located at positions where the first line unit and the second line unit are opposed to each other, and at the third line unit and the fourth line unit. The unit is disposed between the unit and a position where the unit is opposed to the unit.
A gas insulated switchgear according to claim 1.