JPH01303002A - Gas insulated incoming switchgear - Google Patents

Abstract

PURPOSE:To reduce the installation area, by employing a circuit breaker formed with a pair of connection ports shifted approximately in perpendicular direction then connecting the facing section thereof each other through a connection bus and connecting an incoming unit to a connection port formed perpendicularly to the connection bus. CONSTITUTION:A longitudinal circuit breaker 3 is arranged in adjacent to an incoming unit 17 and the facing sections thereof are connected each other. The other end of the circuit breaker 3 is formed while being shifted approximately in perpendicular to the terminal at the connecting side of the incoming unit 17, and it is connected through a connection bus 14 with the terminal of a circuit breaker 3 for another line facing therewith. Incoming units 17 are arranged in the directions crossing perpendicular to the diagonal line, and the facing sections of the incoming unit 17 and the circuit breaker 3 are connected each other. Total six connection bus conductors are arranged in the connection bus 14, and they are three-phase bus conductors 14A for connecting the facing circuit breakers 3 and another three-phase bus conductors 14B for connecting the circuit breakers 8 at the side of a transformer 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a gas insulated switchgear for power reception, and particularly to a gas insulated switchgear of a two-line lead-in type.

[Prior art] The conventional two-line lead-in type gas-insulated switchgear was developed in Japanese Patent Application Laid-Open No. 5
Publication No. 9-103507 and Special Publication No. 62-20764
It is introduced in publications such as the above, and consists of a power receiving unit such as a cable or bushing, a disconnect switch, a grounding switch, a circuit breaker, a transformer/current transformer (hereinafter referred to as PCT), a connection bus bar that connects these devices, etc. has been done.

Among these components, focusing on the circuit breaker, in the former conventional example, connection ports were formed on opposite sides of the vertical circuit breaker, and other devices adjacent to these connection ports were connected. In the latter conventional example, a pair of connection ports are formed on one side of the vertical circuit breaker, and other devices adjacent to the connection ports are respectively connected. Details of the circuit breaker in the former conventional example described above are introduced in, for example, Japanese Patent Laid-Open No. 60-109707 and Japanese Patent Laid-Open No. 60-183908, and similar configuration examples are shown in FIGS. 9 and 10. There is.

FIG. 9 is a cross-sectional view of the circuit breaker, and FIG. 10 is a vertical cross-sectional view of the circuit breaker.

Connection ports 2O are provided on both sides of the vertical circuit breaker container 20.
A, 20B are formed, and normally these connection ports 20A, 20B
Other equipment is connected to via insulating spacers 21A and 21B. Inside the circuit breaker container 20, there is a three-phase circuit breaker unit l.
-22U, 22V, and 22W are arranged vertically so as to be located at each vertex of a triangle when viewed in plan as shown in FIG.

Connecting conductors 23U, 23V, and 23W are connected to the upper terminals of each of the interrupting unit units 22U, 22V, and 22W, and these connecting conductors are connected to the embedded center conductor of the insulating spacer 21A. On the other hand, each cutoff unit 22U, 22V,
The lower terminal of 22W has connection conductors 24U, 24-V, 24
The embedded center conductor of the insulating spacer 21B is connected via W.

In addition, the configuration shown by the dotted line near the connection port 20C formed above the connection port 20B in FIG. Excluded in the case of circuit breakers.

[Problems to be Solved by the Invention] As described above, the circuit breaker used in the conventional gas-insulated switchgear for power reception has connection ports on both sides of the vertical circuit breaker container 20, as shown in FIGS. 9 and 10. 20A and 20B, or a pair of connection ports were formed vertically on one side of a vertical circuit breaker container.

This is because the above-mentioned configuration was advantageous in circuit breakers for gas-insulated switchgear for electric power rather than for power reception, so the circuit breaker and the circuit breaker for gas-insulated switchgear for power reception were standardized by having the same configuration. It originated from the idea of aiming.

Therefore, when a power receiving gas insulated switchgear is constructed using this type of circuit breaker, a relatively large installation area is required, as shown in Japanese Patent Application Laid-open No. 59-103507 and Japanese Patent Publication No. 62-20764. Further, such a configuration not only becomes long in the connection direction between the circuit breakers of the two circuits, but also becomes large in the width direction, which exceeds the transport limit dimension and makes it difficult to transport them together.

An object of the present invention is to provide a gas insulated switchgear for power reception which requires a smaller installation area.

[Means for Solving the Problems] In order to achieve the above object, the present invention arranges two circuit breakers facing each other, and connects one of the connection ports formed in the facing portions via a connection busbar. , a power receiving unit is connected to the other connection port formed in a direction substantially perpendicular to the one connection port, and the connection bus bar has six connection bus conductors in a connection bus container; P connected to bus bar
It is characterized in that the CT and transformer side connection busbars are arranged substantially parallel to the lead-out direction of the other connection port.

[Function] As described above, the gas-insulated switchgear for power reception of the present invention uses a circuit breaker with a pair of connection ports rubbed in a substantially right angle direction, and connects six connection bus conductors between the opposing portions. Since the connection is made using the connection bus bar, the width in the direction perpendicular to the connection bus bar can be significantly reduced, and since the power receiving unit is connected to the connection port formed in the direction perpendicular to the connection bus bar, the width of the connection bus bar can be significantly reduced. A gas-insulated switchgear for power reception that is reduced in the axial direction is obtained.

[Embodiment 1] Hereinafter, embodiments of the gas-insulated switchgear for power reception according to the present invention will be described with reference to the drawings.

Figure 2 is a circuit diagram of a power receiving substation that is the subject of the present invention.
One end of a circuit breaker 3 is connected via a disconnector 2 to #l edge deriving means 1 consisting of a cable head, bushing, etc. One end of a lightning arrester 10 and a grounding switch 11 are connected between the disconnector 2 and the insulation lead-out means 1, respectively. A disconnector 4 is connected to the other end of the circuit breaker 3, and this constitutes a power receiving circuit for one circuit, and an identical power receiving circuit is added to connect the disconnectors 4 and 4' with a bus bar 5. It has a two-line power reception system.

On the other hand, there are also two transformers 9, each connected by a transformer bus bar 7 via a disconnector 8, and one end of a grounding switch 16 is connected to the transformer bus bar 7. A P CT 6 is provided at the connection.

A plan view of a gas insulated switchgear constructed based on this circuit diagram is shown in FIG.

As can be seen from Figure 2, the circuit diagram is a 2-line, 2-banter system, and the target configuration is centered around PCT6, and this is the same in Figure 1, so it mainly concerns the 1-line and 1-bank configuration. Details.

In FIG. 1, a cable head is used as the insulation lead-out means 1, and the cable head 1, the disconnector 2, the lightning arrester 10, and the earthing switch 11 are housed integrally in the lightning receiver container 12.
A power receiving unit 17 is configured. The circuit breaker 3 is vertically arranged adjacent to the power receiving unit 17, and is connected to the power receiving unit 17 at a facing portion, as can be seen from FIG. The details of the circuit breaker 3 will be described later, but the other terminal is formed almost perpendicularly to the terminal on the connection side with the power receiving unit 17, and is connected to the same terminal of the circuit breaker 3 of the other circuit placed opposite to the connection bus bar. 1
Connected via 4. That is, the circuit breakers 3 for two circuits are arranged facing each other at a predetermined distance apart, and the opposing parts are connected by the connection bus 14, and the power receiving units 1-17 are arranged in a direction orthogonal to the opposing lines, respectively. The facing parts between the power receiving unit 17 and the circuit breaker 3 are connected by the facing parts.

A total of six connection bus conductors are arranged in the connection bus 14, three of which are three-phase bus conductors 14A that connect between the circuit breakers 3 arranged oppositely, and the other three are on the transformer 9 side. These are three-phase bus conductors 14B that connect between the disconnectors 8, and these can be supported completely independently, or those of the same phase can be supported as double conductors. Surface connection bus conductor 14A,
14B is the fifth cross-sectional view taken along the line ■-■ in FIG.
As can be seen from the figure, it is connected to the terminal of PCT6.

Further, as shown in FIG. 1, a disconnector 4 is constructed in the middle of the connection bus conductor 14A, and the connection bus conductor 14.
B has been derived. As shown in FIG. 4, which is a cross-sectional view taken along line IV-IV in FIG. 8 is connected. The monitoring cubicle 15 for each line is arranged in front of the circuit breaker 3 and the disconnector 4 as shown in FIGS. 3 and 4.

The gas insulated switchgear configured as described above can reduce the installation area. In other words, as shown in FIG. 1, the length in the longitudinal direction is determined by the position of the circuit breaker 3.
A connection bus bar 18 connected to a connection bus bar 14 between. PCT
6 are all led out in a direction perpendicular to the connection bus 14, so the axial length of the connection bus 14 can be short. In addition, the power receiving unit 17 also connects to the connection bus 14.
Since it is arranged in a direction perpendicular to the direction, the dimensions can be reduced. On the other hand, when there is 8 in the width direction W, the connection bus bar 18 and the power receiving unit 17 are connected to the PC in consideration of the width direction dimension required for the arrangement of the PCT 6.
Since it is arranged almost parallel to T6, this dimension W can also be made small. In particular, if the connection bus bar 18 is disassembled at the connection part with the transformer 9, the dimension W can be kept within the transportation limit dimension, and the gas insulated switchgear can be transported as one unit.

Here, for the circuit breaker 3 whose terminal lead-out direction has been changed, the sixth
This will be explained using the diagram and FIG.

6 and 7 are a cross-sectional view and a vertical cross-sectional view of the circuit breaker, in which a three-phase circuit breaker unit h22U,
22V, 22W are arranged and the connection conductor 24. connected to its lower terminal. This is the same as the conventional type shown in FIGS. 9 and 10 in that U, 24V, and 24W are led out from the connection port 20B. Shikashi, interrupter unit 1-22U, 22
Connecting conductor 23U, 23 connected to the upper terminal of V, 22W
The structure for deriving V and 23W is different from the conventional type. That is, the upper connection port 2OA formed in the circuit breaker container 20 is formed in a direction substantially perpendicular to the lower connection port 20B, and the connection port 20A is connected to the circuit breaker units 22U, 22V, 2
Connecting conductor 23U, 23V, 2 connected to the upper terminal of 2W
3W is derived and connected to the connection bus conductor j, 4-A of the connection bus 4 in FIG.

With the circuit breaker 3 having such a configuration, as shown in FIG. -7 can be placed adjacent to each other.

FIG. 8 shows a gas-insulated switchgear for power reception according to another embodiment of the present invention. The difference from FIG. The device 9 and the connection bus 18 are arranged to the left of the connection bus 14. Therefore, if the configuration of FIG. 1 excluding the transformer 9 and the connection bus bar 18 is rotated by 180 degrees, the configuration of FIG. 8 will be obtained.

In this embodiment, since the connection bus 14 is close to the transformer 9, the axial length of the connection bus 8 is such that the disconnector 8 is placed in the same container as the disconnector 4, or the connection bus 14 and the connection bus 8 are located near the connection part of the connection bus 14 and the connection bus 8. By configuring it as follows, it can be made shorter than the case of FIG. However, the monitoring cubicle] 5 must be installed in a new position.

In this way, according to this embodiment as well, a gas insulated switchgear with a small installation area can be obtained, and it can be transported together within transport limits except for the transformer 9 side.

Note that the connection between the PCT 6 and the connection bus 14 is not limited to the configuration shown in FIG. 5, and the PCT 6 can also be connected on-site as handled by the electric power company. Further, although a cable head is used for the power receiving unit 17, a bushing may be used instead.

[Effects of the Invention] As explained above, the present invention connects the opposing parts of the circuit breakers disposed opposite each other via a connection bus bar having six connection bus conductors, and A power receiving unit is provided on the side of the circuit breaker, and the opposing parts are connected, and a connection bus bar and PCT leading to the transformer are installed almost parallel to this connection part, so that the power receiving unit is installed on the side of the circuit breaker, and the connection bus bar and PCT that reach the transformer are installed almost parallel to this connection part. A gas insulated switchgear for power reception with a smaller area and several stages of area reduction can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a gas-insulated switchgear for power reception according to an embodiment of the present invention, FIG. 2 is a circuit diagram of FIG. 1, and FIGS. 3, 4, and 5 are nr- of FIG. m-line. 6 and 7 are cross-sectional views and vertical sectional views of the circuit breaker shown in FIG. 1, and FIG. 8 is a cross-sectional view taken along lines IV-IV and ■-■, FIGS. 9 and 10 are a plan view of a gas-insulated switchgear for power reception, and a cross-sectional view and a longitudinal cross-sectional view of a circuit breaker in a conventional gas-insulated switchgear for power reception. 3. Circuit breaker, 6... PCT, 9... Transformer, 1
4... Connection bus bar, 14. A, 14B... Connection bus conductor, ]-7... Power receiving unit, 18 Connection bus bar. Fig. 11O1lI223 18 m "m rv 14y7 -j 1' /4 6, "-"=--, a' 14A. Fig. 2 11-l <I" ■M148 F Fig. 3 Fig. 4 Fig. 6 Figure 7 Figure 5-2 Figure 8--West narrowing Figure 9 Figure 1O

Claims (1)

[Claims] 1. One terminal of the circuit breakers arranged opposite to each other is connected by a connection bus bar, and a power receiving unit is connected to the other terminal of both circuit breakers, and a transformer is connected to the connection bus bar. In a gas insulated switchgear for power receiving which is formed by connecting a connection bus on the transformer side and a transformer current transformer, the connection bus conductor connecting between the two circuit breakers and the transformer side are connected between the opposing parts of both circuit breakers. The power receiving unit is disposed on the side of the circuit breaker in a direction orthogonal to the connection bus and connects the opposing parts thereof, A gas-insulated switchgear for power reception, characterized in that the connection busbar and the voltage and current transformer are arranged in a direction perpendicular to the connection busbar. 2. The power receiving gas insulated power receiving unit according to claim 1, wherein the power receiving unit is disposed on the side of the circuit breaker in the same direction as the lead-out direction of the connection bus connected to the connection bus. Switchgear. 3. The power receiving gas insulated power receiving unit according to claim 1, wherein the power receiving unit is disposed on a side of the circuit breaker in a direction opposite to the lead-out direction of the connection bus connected to the connection bus. Switchgear.