JPH07193925A - Gas insulated switchgear - Google Patents

Abstract

PURPOSE:To provide a gas insulated switchgear the size of which can be reduced by modifying the arrangement or the constitution of compositional members. CONSTITUTION:In a gas insulated switchgear where first and second main buses 1, 2 are split into four interconnected buses, the bus section lines BS1, BS2 connecting the split buses and the lines BCa, BCb linking the first and second buses are constituted as two sets of continuous lines arranged perpendicularly to the axis in the center of the main bus. This structure saves the width of gas insulated switchgear in the direction of main buses 1, 2 thus realizing reduction in the installation space. When the bus section lines and the bus linking lines are arranged while utilizing the space between the machines effectively, the gas insulated switchgear can be reduced in size.

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 dual main buses.

[0002]

2. Description of the Related Art In recent years, gas-insulated switchgear has been applied to substations and switchyards because the installation space can be reduced, salt resistance and stain resistance are excellent, and maintenance and inspection can be performed easily and safely. Often.

Regarding such a gas-insulated switchgear, an example of a gas-insulated switchgear in which the main bus bar is duplicated is shown in the single wire connection diagram of FIG. In FIG. 17, an example of a gas-insulated switchgear of the double busbar 4-busbar communication system is particularly shown. Moreover, in order to clearly indicate a plurality of identical parts, the suffix of the same part is added to the individual parts, and the alphabet of the subscript is added individually.

In FIG. 17, the first and second main buses 1 and 2 are each divided into two. Busbar section line BS for connecting between the first main busbars 1a, 1b
1 is provided with a bus section line BS2 for connecting between the second main buses 2a and 2b. BS for each bus line
Circuit breakers 3 and 4 are provided in 1 and BS2, respectively. Between the current transformers 5 and 6 and the disconnecting switches 7 and 8, grounding switches 9 and 10 for maintenance and inspection of the circuit breakers, and between the divided main bus lines so as to connect to both sides of the circuit breakers 3 and 4. Voltage transformers 11 and 12 for measuring the voltage are provided.

Further, the first and second main buses 1a and 2a,
Bus line connecting line BC for connecting between 1b and 2b
a and BCb are provided. Each busbar communication line BCa,
Circuit breakers 15.16 are provided in each BCb. Then, the current transformers 17, 18 and the disconnectors 19, 20 and the circuit breaker 1 are connected so as to be connected to both sides of the circuit breakers 15, 16.
Grounding switches 21 and 22 for maintenance and inspection 5 and 16 are provided. From the first and second main buses 1 and 2 as described above, a lead-out line connected to the outside is provided. This is because the main bus lines 1a and 2a have lead lines 1A,
2A has lead lines 1B and 2B on the main buses 1b and 2b.
Is provided.

As such a gas-insulated switchgear of the double busbar / four busbar communication system, a three-phase one-piece type is provided in Japanese Utility Model Publication No. 54-42418, which is shown in FIG.

As shown in FIG. 18, the first and second main busbars which are horizontally arranged doubly are divided into two at the central portion in the longitudinal direction, and the first main busbars 1a and 1b and the first main busbars 1a and 1b are respectively divided. It is configured as two main buses 2a and 2b. First divided
Between the main buses 1a and 1b and between the second main buses 2a and 2b
The spaces are connected by bus section lines BS1 and BS2. The busbar section lines BS1 and BS2 are connected to disconnectors 7a and 8a as (first main busbar 1a, second main busbar 2a) as one of the divided main busbars, and are connected to the respective disconnectors 7a and 8a. Connecting busbars 100,2 with circuit breakers 3,4
00 are connected to each other. Then, the connecting buses 100 and 200 and the main bus on the other side (first main bus 1b,
The disconnectors 7b and 8b connected to the second main bus 2b) are connected. A lead line 1A is connected to the first and second main buses 1a and 2a, and a lead line B is connected to the first and second main buses 1b and 2b. Further, although not shown in this figure, adjacent to the drawer lines 1A and 1B,
A busbar communication line for connecting between the first and second main busbars 1a, 2a / 1b, 2b, a voltage transformer for the main busbar, and a ground switch are installed.

A phase-separated type gas-insulated switchgear is shown in FIGS. Note that FIG. 20 shows JJ of FIG.
FIG. 21 is a sectional view taken along the line KK of FIG. That is, main transformer voltage transformers 11 and 12 are provided at the ends of the first and second main buses 1 and 2 coaxially with the main buses 1 and 2, respectively. Between the first main busbars 1a and 1b, a busbar communication line BS1 is used as a disconnector 7a and a grounding switch 9 for inspection.
a, a circuit breaker 3, a grounding switch 9b for inspection, and a disconnecting switch 7b. On the other hand, the busbar communication line BCa connects the first main busbar 1a and the second main busbar 2a to the busbar grounding switch 13a, the disconnector 19c, the inspection grounding switch 21c, the circuit breaker 15, and the inspection grounding switch 21d. , The disconnector 19d, and the busbar grounding switch 14a. Also, FIG.
As shown in 1, bus line section line BS2, bus line connection line B
Cb has the same structure.

[0009]

The gas insulation switchgear described above has the following problems. That is, first, in the case of the three-phase collective type, as shown in FIG. 17, in addition to the lead line, two busbar section lines BS1, BS2 and 2 are provided.
A space for installing the two busbar connecting lines BCa, BCb, the voltage transformers 11, 12 for the main busbars, and the ground switches 9, 10 is required. Further, as shown in FIG. 18, a space for arranging the connecting busbars 100, 200 other than the main busbar is required in order to configure the two busbar section lines BS1, BS2. Since these constituent members are provided, the conventional three-phase batch type gas-insulated switchgear has a drawback that the installation space becomes large and at the same time the economical efficiency is deteriorated.

On the other hand, in the gas-isolated switchgear of the phase separation type in which the three phases are independently stored in the tank, two busbar section lines BS1 and BS2 of the double busbar and a busbar communication line BCa,
Since the BCb are arranged so as to face each other, the installation space can be reduced. However, there were the following problems. That is, in the case of a phase-separated type gas insulated switchgear, if the heights of the main busbars 1 and 2 and the outlet heights of the circuit breakers 7 and 8 are the same, the main busbars 1 and 2 and the circuit breakers 7 and 8 are connected. Connecting busbars interfere with other two-phase main busbars. For this reason, it is necessary to change the height of the main bus and the height of the breaker outlet. That is, in FIG. 20, one phase x of the main bus 1b
Is connected bus bar 3 in order to avoid the other two phases "y" and "z".
The height is changed by 9 and it is connected to the disconnector 9b.
If the disconnector 9b is at the same height as the main bus 1b and is connected linearly with the connecting bus, the connecting bus 39 will be the main bus 1
Interfering with the other two phases "y" and "z" of b. The same applies to other main buses and connected devices.

As a result, the height H of the apparatus becomes very high, and even if the installation space is reduced, the volume of the entire apparatus becomes large. Especially, in the indoor type where the equipment is installed indoors, the building is large. There was a problem. Further, as the height of the equipment becomes higher, the center of gravity becomes higher, so that there are problems that the seismic performance is deteriorated and the installation work period is extended.

Further, in the phase separation type gas insulated switchgear,
The divided first main buses 1a and 1b and the second main buses 2a and 2b are coaxially provided, respectively, and
The main busbar voltage transformers 11 and 12 provided at the respective ends of the main busbars 1 and 2 are also arranged coaxially with the main busbars 1 and 2. Therefore, the total length L becomes large, which is a factor of increasing the installation space. Especially in the indoor type where the equipment is installed inside the building, the total length of the building becomes large, which is a problem.

In addition, in the case where the main bus is further expanded outside, the main bus voltage transformer is once removed and the main bus is expanded. In this case, the wiring of the main bus voltage transformer will be redone.

Therefore, it may be possible to arrange the main bus voltage transformer at a position other than the end portion of the main bus and in the middle of the main bus. In this case, the upper first main bus is arranged on the upper side, and the lower second main bus is arranged on the lower side. However, in this case, the height of the device is
Determined by the height of the main bus voltage transformer located above the first bus. This is very high, and even if the installation space is reduced, the volume of the entire device is large, which makes it unsuitable for indoor type devices. Moreover, when the overall height of the entire device is increased, the position of the center of gravity is increased, so that the seismic performance is deteriorated, the assemblability is deteriorated, and the installation work period is extended.

The present invention has been proposed in order to solve the above-mentioned drawbacks, and the first purpose thereof is to minimize the number of connection buses that are unnecessary in terms of function, and at the same time, to effectively use the space between constituent devices. By doing so, it is an object to provide a gas-insulated switchgear capable of reducing the installation space.

A second object of the present invention is to provide a gas-insulated switchgear which reduces the volume of the device by reducing the height of the entire device, improves seismic performance, and facilitates installation work. is there.

A third object of the present invention is to provide a gas-insulated switchgear which reduces the length and height of the entire apparatus, thereby reducing the volume of the apparatus, facilitating installation work, and facilitating expansion. It is in.

[0018]

In order to achieve the above object, in the invention according to claim 1, the main busbar comprises a first mainbusbar and a second mainbusbar which are arranged in parallel to each other. The first main bus and the second main bus are divided into
In a gas insulated switchgear of a double busbar 4-busbar communication system comprising four busbars connected to each other, between the busbars for connecting between the respective divided busbars of the first main busbar and the second main busbar A busbar sectioning line is provided, and a busbar connecting line is provided between the busbars that are divided into each other in order to connect the busbar of the divided first main busbar and the busbar of the divided second main busbar to each other. The busbar section line and the busbar communication line are respectively provided with a circuit breaker, a disconnector, a current transformer, a grounding switch, and a voltage transformer, and the busbar section line and the busbar communication line are two continuous sets. It is configured as a line, and the two sets of continuous lines are provided in a direction orthogonal to the axis of the main bus.

According to the second aspect of the invention, the first aspect is
One of the first main bus bar and the second main bus bar described above is arranged vertically above or vertically below the other, and a terminal end portion is provided at the divided end of one bus bar divided from the first main bus bar. A connection busbar is provided between the first main busbar and the second main busbar,
A connection in which the end portion is between the first main bus and the second main bus at the divided end of the second main bus that is divided and the connecting bus of the first main bus and the bus on the opposite side are divided. It is characterized in that a bus bar is provided.

According to a third aspect of the invention, the first main bus and the second main bus according to the first aspect are provided on the same plane, and the first main bus and the second main bus face each other. On the opposite side of the main bus bar, connecting bus bars are provided in parallel with each other in parallel with the main bus bar, and the circuit breaker provided in the bus bar section line and the bus bar communication line is provided on the outer side of the connection bus line, The connecting busbar and the main busbar are connected via a disconnector and a current transformer, and a grounding switch and a voltage transformer are installed between the mainbusbar and the disconnector of the busbar connecting line and on the connecting busbar. It is characterized by having done.

According to a fourth aspect of the present invention, the main bus of the first aspect comprises a plurality of phases, and each phase of the main bus is independently housed in the same container. Each of the circuit breakers is provided with a vertical circuit breaker, and each circuit breaker is provided with upper and lower tapers, and one of the first main bus bar and the second main bus bar is divided into one side. The bus bar end is provided at a position higher than the upper outlet of the circuit breaker, and the bus bar end on one side of the other main bus bar that is divided is provided at a position lower than the lower outlet of the circuit breaker.
The other end of the main bus line and the second main bus line on the other side is
The circuit breaker is provided at a height position between the upper and lower leads.

According to the invention of claim 5, a connecting busbar for connecting to a busbar section line is provided at the other end of the first main bus and the second main bus of claim 4 on the other side of the divided busbars. It is characterized in that the voltage transformers are provided so as to be branched and provided vertically, and voltage transformers are provided at upper and lower ends of the connection bus bar.

In the invention according to claim 6, the busbar section line or the busbar communication line according to claim 1 or claim 2 or claim 3 or claim 4 has a disconnector, a grounding mechanism part and a fixed side contact part. The disconnecting switch grounding switch is provided in the same container as the grounding switch consisting of, and in the disconnecting switch grounding switch, the grounding mechanism part of the grounding switch is detachably provided, and the grounding switch is removed. In this case, it is characterized in that the voltage transformer can be provided at the fixed side contact portion of the grounding switch.

[0024]

According to the gas-insulated switchgear of the present invention, the busbar section line and the busbar communication line are arranged in a concentrated manner in the divided portions of the first main busbar and the second main busbar, and the busbar connecting line The width of the device can be saved and the installation space can be reduced. Especially, when the first main bus and the second main bus are vertically arranged vertically or on the same plane, the bus bar section line and the bus bar communication line should be connected to each other with a space between the components. The device can be miniaturized by arranging it effectively and arranging it so as to minimize the connection bus bar which is unnecessary in terms of function.

Further, even when the main busbar is composed of a plurality of phases, and each phase of the main busbar is independently housed in the same container, by effectively utilizing the space between the constituent devices, the apparatus can be used. It is possible to significantly reduce the height and the total length.

Further, by disposing the disconnecting switch earthing switch in which the disconnecting switch and the earthing switch are provided in the same container in the bus bar division line or the bus line connecting line, the connecting bus bar can be reduced, so that the assembly process It will be easy. Further, since the grounding switch can be changed to a voltage transformer, it is possible to correspond to many places as a replacement part due to a failure or the like by one configuration.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the gas-insulated switchgear of the present invention will be described below with reference to the drawings.

(1) First Embodiment FIG. 1 to FIG. 6 FIGS. 1 to 6 are layout diagrams of a three-phase collective type gas insulated switchgear in which three-phase conductors are housed in one container. 1 is a sectional view taken along a plane parallel to the main bus, FIG. 2 is a plan view, and FIG.
2 is a side view taken along the line MM of FIG. 2, FIG. 4 is a side view taken along the line NN of FIG. 2, FIG. 5 is a cross-sectional side view showing the disconnector grounding switch of FIGS. 3 and 4, and FIG. FIG. 3 is a side view taken along line P-P of FIG. 2.

That is, in this embodiment, as shown in FIG. 1, the first and second main buses 1 and 2 are provided so that their axial directions are horizontal. The two main buses 1 and 2 are arranged so that the second main buses are parallel to each other vertically below the first main bus. The first and second main buses 1 and 2 are divided at the central portion to divide the first main buses 1a and 1b and the second main buses 2a and 2b.
Has become.

Between the divided first main buses 1a and 1b and the second
A fixed interval is provided in the divided portion between the main buses 2a and 2b. And in this division part, the hook type connecting busbar is provided so that one end part which opposes may be an intermediate position between the 1st and 2nd main busbars. In the drawing, the first
A hook-type connecting bus bar is provided at the ends of the main bus bar 1a and the second main bus bar 2b. In the present embodiment, the terminal end portion of the connecting busbar will be described as the end portion of the main busbar.

The arrangement of such first and second main buses is as follows. First, one end (left side in the drawing) of the divided portion has an end portion of the first main busbar 1b above the end portion of the first main busbar 1a and a second end portion below the end portion of the first main busbar 1a. Main bus 2
a is placed. The other end (right side in the figure) is located above the end of the second main bus bar 2b.
However, the second main bus bar 2a is provided below the end of the second main bus bar 2b.
The end portion of is placed.

Such first and second main buses have
As shown in FIG. 2, bus line section lines BS1 and BS2, bus line connection lines BCa and BCb, a lead line 1A, and a lead line 1B are provided.

First, the bus line section lines BS1 and BS2 and the bus line connection lines BCa and BCb are constructed as shown in FIGS. That is, the bus section line BS1
The busbar connecting line BCa and the busbar dividing line BS2 and the busbar connecting line BCb are arranged to face each other. Then, the bus section line B is provided between the first main buses 1a and 1b.
S1 is a bus section line BS2 between the second main buses 2a and 2b.
Is provided. Further, a busbar connecting line BCa is provided between the first main busbar 1a and the second main busbar 2a, and
A bus line communication line BCb is provided between the main bus lines 2b.

First, the busbar section line BS1 is connected to the first main busbar 1b at right angles to its axial direction. A voltage transformer 11b is arranged at the terminal end of the bus bar section line BS1. A disconnector grounding switch is connected to the busbar section line BS1 at a position between the voltage transformer 11b and the first main busbar 1b. This disconnector ground switch is
A grounding switch 9b and a disconnecting switch 7b are provided in the same container, and a main busbar grounding switch 13b is connected.
And, through this disconnector grounding switch, the first main bus 1
The current transformer 5b is connected to b. The current transformer 5b is connected via the circuit breaker 3 to the current transformer 5a provided vertically below the current transformer 5a. The current transformer 5a is connected to a first main bus 1a provided vertically below the first main bus 1b through a disconnector grounding switch in a direction orthogonal to the axial direction of the first main bus 1a. There is. In addition, this disconnector grounding switch,
The disconnector 7a and the grounding switch 9a are housed in the same container, and the voltage transformer 11a is connected thereto. In this way, the bus bar section line BS1 is configured to connect the first main buses 1a and 1b arranged vertically in the vertical direction.

On the other hand, the bus section line is provided as follows and connects the BS1 first main bus 1 and the second main bus 2 to each other. That is, a busbar connecting line BCa is connected to the first main busbar 1a on the opposite side of the busbar section line BS1 and the first main busbar 1a, orthogonal to the axial direction of the first main busbar 1a. . A current transformer 17m is connected to the first main bus 1a via a disconnector grounding switch. This disconnecting switch grounding switch has a disconnecting switch 19 and a grounding switch 2 in the same container.
1 is provided and is connected to the main bus grounding switch 13a. The current transformer 17m is connected via the circuit breaker 15.
It is connected to a current transformer 17n provided below the current transformer 17m. The current transformer 17n is connected to a second main bus 2a provided below the first main bus 1a via a disconnector grounding switch. The disconnecting switch grounding switch has the grounding switch 21 and the disconnecting switch 19 housed in the same container. In this way, the busbar communication line BCa is
It is configured to connect between the first main bus 1a and the second main bus 2a which are vertically arranged in the vertical direction.

It should be noted that the second a, which is arranged vertically above and below,
Connection by busbar section line BS2 between 2b and busbar connection line BC between 2a and 2b arranged vertically above and below
The connection by b is also configured similarly as shown in FIG.

By the way, the bus section line BS of this embodiment
1, BS2 and the busbar communication lines BCa and BCb are provided with disconnector grounding switches, as shown in FIG. That is, the ground switches 32 and 33 and the disconnector 34 are housed in the same container. If the grounding switch (32 in the drawing) is unnecessary, the movable contact 3
Remove the open / close mechanism with 6 and put the lid on, or
The main rod voltage transformer 38 and other devices can be connected via the connecting rod 37. Such bus line section lines BS1 and BS2 and bus line connection line B
First and second main buses 1 and 2 provided with Ca and BCb
Are provided with outgoing lines 1A and 1B to the outside. As shown in FIG. 6, this is because the upper and lower main bus disconnectors 23, 24, current transformers 25, 26, circuit breakers 27, disconnectors 2
8. Cable connection part 31 via the ground switch 29, 30
It is connected to the. In addition to this, a current transformer and a grounding switch for inspection are naturally arranged in the gas insulated switchgear.
Since it is not directly related to this embodiment, it is omitted.

The operation and effect of this embodiment having the above-described structure are as follows. That is, in the present embodiment, the ends of one of the divided main buses (in the present embodiment, the first main bus 1a and the second main bus 2b) are connected to the other opposing main bus (in the present embodiment, the The first main bus 1b and the second main bus 2a) are arranged vertically below or vertically above the ends. Thereby, between the first main buses 1a and 1b and between the second main buses 2a,
2b bus section line BS1, BS2 connection, and the first main bus and the second main bus (1a and 2a, 1b and 2
The connection by the busbar connecting lines BCa and BCb in b) can effectively utilize the empty space in the vertical direction of the main busbar generated by the double busbar system. Moreover, the busbar connecting lines BCa, B continuously from the busbar dividing lines BS1, BS2
Cb is provided, and each circuit has one line. Therefore, the width of the device in the main bus direction can be saved, and the installation space can be reduced.

Further, in this embodiment, a disconnector grounding switch in which the disconnecting switch and two grounding switches are housed in the same container is used. This makes it possible to remove the opening / closing mechanism of one of the two ground switches as necessary and connect it to the main bus voltage transformer.

Therefore, by using the bus voltage transformer, the number of connecting buses can be reduced and the installation space can be reduced accordingly. Moreover, since the connecting busbars are reduced, the assembly process is simplified. Further, a common main bus voltage transformer formed according to the same standard can be used for all of the bus bar section lines BS1 and BS2 and the bus bar communication lines BCa and BCb. As a result, the designing and processing steps are simplified, and one replacement part due to a failure or the like can correspond to eight locations. As a result, in this embodiment, it is possible to provide a gas-insulated switchgear that can be downsized and downsized and that is highly economical.

The grounding switch for the main bus and the voltage transformer can be implemented without this configuration.

(2) Second Embodiment In the first embodiment, the first and second main buses are arranged vertically, but they can be arranged horizontally. Such a configuration is shown in FIGS. 7 is a single line connection diagram, FIG. 8 is a plan view, FIG. 9 is a sectional view taken along the line AA or BB of FIG. 8, and FIG. 10 is a sectional view taken along the line C-C or DD of FIG. .

That is, in this embodiment, the first and second main buses 1 and 2 are provided in parallel on the same plane. Then, each of the main buses 1 and 2 is divided at the central portion, and in order to connect between the first main buses 1a and 1b and between the second main buses 2a and 2b, the bus-bar section lines BS1 and BS2 respectively And the second main busbars 1a and 2a, and between the first and second main busbars 1b and 2b, respectively, busbar connecting lines BCa and BCb are provided, respectively. These bus line section lines BS1 and BS2 and bus line connection lines BCa,
BCb is arranged above the first and second main buses 1 and 2.

As shown in FIGS. 8 and 9, first and second main buses 1 are connected by bus section lines BS1 and BS2.
The a and 2b are connected to one of the outlets of the circuit breakers 3 and 4 via the disconnecting switches 7a and 8b arranged above the a and 2b. Then, the two main buses 1b, 2 are connected via the disconnectors 7b, 8a connected to the other outlets of the circuit breakers 3, 4.
It is connected to two connecting buses 100 and 200 arranged outside a. Furthermore, these two connecting busbars 100,
After passing through the space between the breakers 16 and 15 and the busbar disconnectors 20c and 19d of the busbar communication line, which will be described later, 200 is connected to the main busbars 1b and 2a on the opposite side. Further, the main buses 1b, 2 are connected to the connecting buses 100, 200.
grounding switches 13b and 14a for a and a voltage transformer 11b,
12a is arranged.

On the other hand, as shown in FIG. 8 and FIG.
One busbar connecting line BCa, BCb is arranged in the space between the two busbar sectioning lines BS1, BS2. And
By the busbar disconnectors 19c, 19d and 20c, 20d arranged above the main buses 1a, 1b and 2a, 2b, respectively,
Circuit breaker 15 arranged outside the connecting buses 200 and 100
And 16 are connected. Also, the main bus 1a and the disconnector 1
9c, and the busbar portion connecting the main busbar 2b and the disconnector 20d, the ground switches 13a and 14b for the first main busbar 1a and the second main busbar 2b, and the voltage transformers 11a and 12b.
b is arranged.

The operation and effect of this embodiment as described above are as follows. First, since the busbar section lines BS1 and BS2 and the busbar communication lines BCa and BCb are three-dimensionally arranged and the distance between the respective constituent devices is narrowed, the connection busbar is also minimized. As a result, the space in the longitudinal direction of the main bus can be reduced, and the installation space can be reduced. Also,
The grounding switches 13 and 14 and the voltage transformers 11 and 12 for the four main buses are efficiently arranged in the empty space inside the connection buses 100 and 200, so that the installation space and the connection buses are unnecessary. Become.

Further, the circuit breakers 3 and 4 are connected to the busbars 100 and 2
Since it is arranged on the outside of 00, it is excellent in maintenance and inspection.

Further, in the present embodiment, the two sets of busbar section lines BS1 and BS2 and the busbar link lines BCa and BCb have symmetrical shapes, so that the same equipment can be used and the equipment is standardized. be able to. As a result, the designing / processing step and the assembling step at the time of installation can be simplified, resulting in excellent workability and economy. Therefore, it is possible to provide a gas-insulated switchgear that reduces the installation space and facilitates installation work.

In the above embodiment, the three-phase type is described with reference to the drawings, but the phase-separated type can also obtain the same effect with the same configuration. Also, the grounding switch for the main bus and the voltage transformer can be implemented without this configuration.

(3) Third Embodiment FIG. 11 to FIG. 1 show the gas insulated switchgear of this embodiment.
It will be described based on 5. 11 is a plan view showing the configuration of the present embodiment, FIG. 12 is a side view taken along the line EE of FIG. 11, FIG. 13 is a side view taken along the line FF of FIG. 11, and FIGS.
FIG. 14 is a plan view of the position of G-G, H-H, and I-I of FIG.

That is, as shown in FIG. 11, a bus bar section line BS1 connecting the first main bus lines 1a and 1b, a bus line connecting line BCa connecting the first and second main bus lines 1a and 2a, and a second main bus line. Busbar section line BS connecting 2a and 2b
The busbar connecting lines BCb that connect the second main busbars 1b and 2b to each other are arranged to face each other.

Further, as shown in FIG. 12, the first main bus 1
Between a and 1b, the bus breaker circuit BS1 connects the circuit breaker 3,
Disconnectors 9a, 9b, disconnectors 7a, 7b, ground switch 13
a, 13b, and voltage transformers 11a, 11b. The first main bus 1a and the second main bus 2a are
Circuit breaker 15 and disconnector 19 via the bus line BCa
c, 19d and grounding switches 21c, 21d.

Here, the circuit breaker 15 is provided with outlets that are opened horizontally in two places at the top and bottom, and the first main bus bar 1b is disposed at a height position that is an intermediate position between the two outlets. . The connection between the main bus bar 1a and the main bus bar 1b is changed by the connection bus bars 40 and 41 so as to change the height.

As shown in FIG. 13, the second main bus 2
The busbar section line BS2 for connecting between a and 2b and the busbar connecting line BCb for connecting between the first main busbar 1b and the second main busbar 2b are also similarly configured.

Such first and second main buses 1 and 2
As shown in FIGS. 14 to 16, each is composed of three phases, and the three phases are provided in parallel. Then, as shown in FIG. 14, at the GG position in FIGS. 12 and 13, the first main buses 1a and 1b are provided so as to face each other and are connected via a component device such as the circuit breaker 3. . Further, as shown in FIG. 15, at the H-H position, the first main bus bar 1b and the second main bus bar 2a are provided so as to face each other, and the respective external sides are connected to the connection bus bars 41, 40 and 43, 42. ing. Further, as shown in FIG. 16, second main buses 2a and 2b are provided facing each other at the I-I position.

By the way, in this embodiment, the voltage transformer 11b for the first main bus is attached to the lower part of the branch portion of the connecting bus 40. Further, the voltage transformer 11a is attached to the connection bus bar 44 connected to the upper main bus bar 1a. on the other hand,
The voltage transformer 12a for the second main bus is attached to the upper part of the branch of the connecting bus 42, and the voltage transformer 12b is the main bus 2
It is attached to a connecting bus bar 45 that connects to b.

The operation and effect of this embodiment as described above are as follows. That is, in the phase-separated type gas-insulated switchgear of the present embodiment, the position of the main bus bar is horizontally higher than the upper outlet of the circuit breaker, lower than the lower outlet and at a height between the upper outlet and the lower outlet. By placing
The height of the device can be remarkably reduced.

Further, since the voltage transformers 11 and 12 which are conventionally provided at the respective ends of the main buses 1 and 2 are arranged in the spaces above and below the connecting bus, the total length L can be greatly reduced. You can Moreover, the height h can also be made low.

Therefore, it is possible to reduce the installation space and the volume of the apparatus. In particular, in the indoor form, the height and overall length of the building can be reduced and the seismic performance can be improved. Moreover, the installation work can be facilitated and the installation work period can be shortened. Further, in the past, two types of circuit breakers having different heights were required, whereas circuit breakers of the same height can be used, so that standardization of equipment can be achieved. Therefore, it is possible to provide a gas-insulated switchgear that is highly reliable and economical, capable of downsizing the device and reducing the installation space in response to higher voltage and larger capacity.

The present invention is not limited to the above-mentioned embodiments, and those skilled in the art can think of other various embodiments in the same manner, and all of them are included in the present invention. It is included in the range of. For example, the arrangement of each unit can be changed as appropriate. Further, in the third embodiment, the positions of the left and right circuit breakers 4 and the positions of the left and right main bus arresters 3 can be arranged upside down. Further, the line circuit 6, the arrester connecting bus bar 7, and the bus bar connecting line 5 do not have to be perpendicular to the main bus line as long as they are in the same direction.

[0061]

As described above, according to the present invention, the connection between the main buses is three-dimensionally performed, and the grounding switch and the disconnecting switch are combined to narrow the interval between the constituent devices. It is possible to reduce the size and increase the voltage and capacity.
It is possible to provide a gas-insulated switchgear that can be downsized and that is highly reliable and economical.

[Brief description of drawings]

FIG. 1 is a sectional view showing an arrangement of main buses of a first embodiment of a gas insulated switchgear according to the present invention, taken along a plane parallel to the main buses.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view taken along the line MM in FIG.

FIG. 4 is a side view taken along the line NN of FIG.

FIG. 5 is a sectional view showing the disconnector grounding switch of FIGS. 3 and 4;

6 is a side view taken along the line P-P in FIG.

FIG. 7 is a single line connection diagram showing the configuration of the second embodiment.

FIG. 8 is a plan view showing the arrangement of FIG.

9 is a side view taken along the line AA or BB of FIG.

10 is a side view taken along the line CC or DD of FIG.

FIG. 11 is a plan view showing the configuration of the third embodiment.

FIG. 12 is a side view taken along the line EE of FIG.

FIG. 13 is a side view taken along the line FF of FIG.

14 is a plan view taken along the line GG of FIG. 12 and FIG.

FIG. 15 is a plan view taken along line HH of FIGS. 12 and 13.

FIG. 16 is a plan view taken along the line I-I of FIGS. 12 and 13;

FIG. 17 is a single wire connection diagram showing the configuration of a general gas insulated switchgear.

FIG. 18 is a plan view showing the configuration of a conventional three-phase batch type gas-insulated switchgear.

FIG. 19 is a plan view showing the configuration of a conventional phase-separated type gas-insulated switchgear.

FIG. 20 is a side view taken along the line JJ of FIG.

21 is a side view taken along the line KK of FIG.

[Explanation of symbols]

BS1, BS2 ... Bus line section line BCa, BCb ... Bus line connection line 1A, 2A, 1B, 2B ... Lead line 1 ... First main bus 2 ... Second main bus 3, 4, 15, 16, 27 ... Circuit breaker 5, 6, 17, 18, 25, 26 ... Current transformer 7, 8, 19, 20, 23, 24, 28, 34 ... Disconnector 9, 10, 13, 14, 21, 21, 22, 29, 30, 3
2, 33 ... Grounding switch 11, 12 ... Voltage transformer 31 ... Cable connecting part 36 ... Movable side contact 37 ... Connecting rod 38 ... Main bus voltage transformer 40, 41, 42, 43, 44, 45, 100 , 200
… Connection bus

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Takahashi 2-1, Ukishima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa Stock company Toshiba Hamakawasaki factory

Claims (6)

[Claims] 1. A first bus having main buses arranged in parallel with each other.
A gas-insulated switchgear of a double-bus-four-bus connecting method, which comprises a main bus and a second main bus, and the first main bus and the second main bus are each divided into four bus lines that are connected to each other. In order to connect between the divided main buses of the first main bus and the second main bus, a bus division line is provided between the buses, and the divided main bus of the first main bus is divided. Busbar connecting lines are provided between the busbars which are divided to connect to the busbars of the second main busbar, and the busbar dividing line and the busbar connecting line respectively include a circuit breaker, a disconnector, a current transformer, A ground switch and a voltage transformer are provided, and the bus section line and the bus connection line are configured as two sets of continuous lines that are continuous with each other, and the two sets of continuous lines are orthogonal to the axis of the main bus line. Provided in the direction Gas insulated switchgear, characterized by that. 2. One of the first main busbar and the second main busbar is disposed vertically above or below the other, and one of the busbars divided from the first main busbar has a divided end portion. , A connecting busbar having an end portion between the first mainbusbar and the second mainbusbar is provided, the second mainbusbar is divided, and the connecting busbar of the first mainbusbar and the opposite-side busbar are split. The gas-insulated switchgear according to claim 1, wherein a connecting busbar having a terminal portion between the first main busbar and the second main busbar is provided at the end portion. 3. The first main bus bar and the second main bus bar are provided on the same plane, and the first main bus bar and the second main bus bar are on opposite sides to the opposing main bus lines, respectively. A connection busbar is provided in a branched manner in parallel with, and the circuit breaker provided in the busbar section line and the busbar communication line is provided outside the connection busbar, and between the connection busbar and the main busbar. 2. A grounding switch and a voltage transformer are installed between the main busbar and the disconnector of the busbar connecting line and on the connecting busbar, which are connected via a disconnector and a current transformer. Gas insulated switchgear. 4. The main busbar comprises a plurality of phases, each phase of the main busbar is independently housed in the same container, and each of the busbar sectioning line and the busbar connecting line is provided with a vertical circuit breaker. Each of the circuit breakers is provided with upper and lower outlet portions, and one main bus bar of the first main bus and the second main bus is divided into the upper end of the circuit breaker at one end of the bus bar. The one main bus bar end of the other main bus bar, which is provided at a higher position, is provided at a position lower than the lower outlet of the circuit breaker, and the other one of the first main bus bar and the second main bus bar is split The side bus bar end is provided at a height position between the upper and lower leads of the circuit breaker.
The gas-insulated switchgear described. 5. A connecting busbar for connecting to a busbar dividing line is vertically provided in a branched manner at a busbar end portion of the other divided side of the first main busbar and the second main busbar. 5. The gas insulated switchgear according to claim 4, wherein voltage transformers are provided at upper and lower ends of the bus bar. 6. A disconnecting switch grounding switch, in which a disconnecting switch and a grounding switch consisting of a grounding mechanism part and a fixed side contact part are provided in the same container, is arranged in the bus bar sectioning line or the bus bar connecting line, In the disconnecting switch grounding switch, the grounding mechanism part of the grounding switch is detachably provided, and when the grounding switch is removed, a voltage transformer can be provided at the fixed side contact part of the grounding switch. It is comprised in 1.
Alternatively, the gas-insulated switchgear according to claim 2 or claim 3 or claim 4.