JPS6315603A - Gas insulated switchgear - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas insulated switchgear in which a circuit breaker and a disconnector connected to a transformer are arranged in a box-shaped container.

[Conventional technology]

Generally, the gas insulated switchgear connected to the transformer is
It was constructed as shown in Fig. 8 and Fig. 8. FIG. 6 is a single line diagram, in which the power receiving lead-out means IK is connected to a circuit breaker 3 via a disconnector 2a, and the circuit breaker 3 is connected to a power usage measuring device (hereinafter referred to as M OF) via a disconnector 2b. The M OF 4 is connected to the transformer connection lead-in/out means 5 via the disconnector 2c, and has a two-line, two-bank configuration, and one pair of the above-mentioned circuits are provided. . As a gas insulated switchgear that includes these devices in a box-shaped container,
As shown in FIG. 6, disconnector 2a, circuit breaker 3, disconnector 2b
A unit consisting of a power receiving unit consisting of a power receiving unit and a transformer connecting unit ■ consisting of a disconnector 2c in a straight line, and a unit having a power receiving unit ■ and a transformer connecting unit ■ having the same configuration. between these two units using
4 is distributed.

In this configuration, the box-shaped container is elongated due to the arrangement of internal equipment, and since the elongated container is placed side by side on both sides of the MOF 4, the area shown by diagonal lines in FIGS. 6 and 8 cannot be used effectively. As a result, the area required for installing the gas insulated switchgear increases.

To solve this problem, K. Electric Railway Vol.

39, No. 9 (1985), pages 14 to 18, has been proposed. The single-line connection diagram is shown in Figure 7, and the plan view of the specific configuration is shown in Figure 9.As shown in Fig. 7, the single-line wiring diagram and the plan view of the concrete configuration are shown in Fig. 9, the power receiving side unit and the transformer connection side unit Furthermore, the power receiving side unit ■, the transformer connection side unit ■, and the MOF4 unit V were housed in separate box-shaped containers and placed side by side, and the space between each unit was placed outside the box-shaped container. They are electrically connected by a cable 30.

[Problem that the invention seeks to solve]

In the conventional gas-insulated switchgear described above, each unit is constructed with a separate box-shaped container, so a total of five box-shaped containers are required, and the use of expensive cables 30 makes it extremely uneconomical. It was a gas insulated switchgear.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide an economical gas-insulated switchgear that reduces the installation area by reducing the number of box-shaped containers.

[Means for solving problems]

In order to achieve the above object, the present invention arranges box-shaped containers on both sides of a box-shaped container containing an MOF, and arranges a power receiving side unit and a transformer connection unit in parallel in both box-shaped containers. The present invention is characterized in that a flange connection portion through which a conductor connecting devices in each box-shaped container passes is formed on the opposing portion of each box-shaped container.

[For production]

Since the gas insulated switchgear of the present invention has the above-described configuration, the box-shaped containers can basically be arranged in close proximity to form an orderly shape. Since the conductor that connects the devices within the box-shaped container is inside the box-shaped container, it is economical because expensive cables are not used as in the conventional case. Moreover, since the power receiving side unit and the transformer connecting side unit are housed in one box-shaped container, the number of containers can be reduced compared to the conventional case.

〔Example〕

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

FIG. 2 is a single line diagram, in which power supplied from the power receiving bushing 1 passes through a power receiving unit consisting of a disconnector 2a, a circuit breaker 3, and a disconnector 2b in one box-shaped container 20. After passing through the MOF 4, it reaches the transformer via a transformer connection bushing 5 via a transformer connection side unit including a disconnector 2C configured in a box-shaped container 20. Therefore, one system of power receiving side units and transformer connection side units are arranged side by side in one box-shaped container 20. In Figure 2, the power receiving unit is 2.
In the system, the transformer side is also an example of two banks.

The inside of the box shape 421 has the same equipment configuration as the inside of the box shape container 20.

FIG. 1 is a plan view of the gas insulated switchgear based on FIG. 2, and FIGS. 3 and 4 are views taken along line AA and line BB in FIG. 1.

First, the power receiving unit shown in FIG. 3 will be explained.

The power receiving side bushing 1 is connected to a box-shaped container 20 by tightening bolts. Further, a lightning arrester 12 is connected to the center conductor 8 via a current collector 11 . This conductor 10 is a disconnector 2a
It is connected to one end of the circuit breaker 30 via. On the other hand, the other end of the circuit breaker 3 is connected to a conductor 7 via a disconnector 2b, and as can be seen from FIG. It passes through the connection part 6 and is connected to the disconnector 2b' IC in the box-shaped container 21 juxtaposed on the opposite side of the MOF 40 box-shaped container 220. Further, as shown in FIG. 5, the conductor 7 is branched downward at the upper part of the unit box-shaped container 22 consisting of the KMOF 4 and introduced into the box-shaped container 22, and the introduced conductor is connected to the MOF 4. A conductor 1 employing a so-called coaxial reciprocating conductor that is electrically insulated from the conductor 7, coaxial with the conductor 7, and arranged around its outer periphery.
4 passes through the box-shaped container 22 of MOF 4, and then branches into a T-shape.

One of them is connected to the disconnector 2C shown in FIGS. 1 and 4, and the other is connected to one pole of the disconnector 2d housed in the box-shaped container 21 shown in FIG. Disconnector 2c
A current collector 11 shown in FIG. 4 is provided at the tip of the conductor 15 connected to the other pole, and a connecting bushing 5 provided on the transformer side is provided.
connected to the center conductor of

The power receiving side unit and the transformer connection side unit are placed in a KM- box-shaped container 20.2 parallel to each other and adjacent to each other as shown in Fig. 1.
1, respectively.

SF and gas at a pressure close to atmospheric pressure are sealed inside the box-shaped containers 20, 21 and 22, and the insulation of the equipment is maintained by this gas. Note that, inside the box-shaped container 21 in FIG. 1, the same equipment as that configured inside the box-shaped container 20 is arranged symmetrically with respect to the opposing surface.

Figure 5 is the C-C parent diagram of Figure 1, and is the MOF40 box-shaped container 2.
The components in 2 are shown. The connection bushing 16 attached to the gas partition wall 17 of the box-shaped container 22 is provided with two conductor connection terminals at each end, one of which is connected to the conductor 7, the other to the conductor 14, and The other end of the connection bushing 16 is connected to the MOF 4.

A flange connection portion 6 is formed at the opposing portion of each of the box-shaped containers 20, 21, and 22 in FIG. It passes through this flange connection part 6. Although the flange connection portion 6 is of a phase-separated type in the illustrated example, it may be of a three-phase finger type. Furthermore, since the box-shaped container 20 and the box-shaped container 21 are connected to separate transformers, the flange connection portions 24 and 24' are formed at a distance necessary for arranging the two transformers side by side. ing. Although detailed illustrations are omitted, the conductor 7
As can be seen from FIG. The shaped containers 20, 21 and 22 are configured so that at least one of their front or back surfaces are lined up in a straight line, so that the area necessary for installation is arranged in an orderly manner.
It constitutes a gas insulated switchgear with a small installation area.

However, since there is a flange connection part 6 between each box-shaped container, there is a slight gap, but if the cover 18 is provided to cover it, the appearance becomes cleaner.

This type of gas insulated switchgear allows for a significant reduction in the installation area compared to the conventional examples shown in Figures 8 and 9.
Furthermore, the conductor connections between the box-shaped containers are made in the gas space, which is superior in terms of economy and reliability compared to the case where cables are used.

In the illustrated example, an example in which two lead-in transformers are used from two systems has been described, but when adding one additional Vc transformer, for example, a new box-shaped container 20 having only a disconnector 2c is used. It is sufficient to manufacture a container, place it side by side on the side of the box-shaped container 20 or 21, and connect one pole of the seven new disconnectors to the conductor 7.

Even in such an expansion, the electrical connection can be made by connecting the conductor 7 in the axial direction using the flange connection part formed on the opposite part of the box-shaped container without using a cable, so it is economical. and a highly reliable gas insulated switchgear can be obtained. In other words, the present invention provides a box-shaped container 220 having an MOF4 as a basic configuration, and has box-shaped containers each configuring a power receiving side unit and a transformer connection side unit on both sides, and electrical connection between devices in each of these box-shaped containers. The connection is as described above in each box-shaped container [Effects of the Invention] Since the present invention connects the equipment in each box-shaped container by a conductor through the flange connection part formed on the opposing part of each box-shaped container, By placing the box-shaped containers in close proximity to each other, it is possible to create an orderly overall shape, and the installation area can be reduced by making effective use of space. Also, by not using cables, an easy-to-use gas-insulated switchgear can be achieved. It will be done. Moreover, since the power receiving side unit and the transformer connection side unit are arranged side by side and configured in one box-shaped container, a system that conventionally requires five box-shaped containers can be configured with three box-shaped containers.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional plan view of a gas insulated switchgear according to an embodiment of the present invention, FIG. 2 is a single line diagram of FIG. 1, and FIGS. 3, 4, and 5 are A of FIG. -A parent diagram, B-B parent diagram and CC parent diagram, Figures 6 and 7 are single line diagrams of conventional gas insulated switchgear, Figures 8 and 9 are Figures 6 and 7. FIG. 2 is a plan view and a front view of the gas-insulated switchgear based on the figure. 2a, 2b, 2c...Disconnector, 3...
Circuit breaker, 4... MOF, 6... Flange connection, 7, 14... Conductor, 20, 21, 2
2...Box-shaped container Figure 1/5 5"
Figure 3 Figure 4 Figure 5 Figure 8 Figure 9

Claims (1)

[Scope of Claims] In a gas-insulated switchgear having one or two power receiving units and two transformer connection units connected to the power receiving units via a power consumption measuring device, one of the power receiving units A box-shaped container housing equipment constituting the side unit and one of the transformer connection side units, and another box housing equipment constituting the other power receiving side unit and the other transformer connection side unit. A box-shaped container containing the above-mentioned power usage measuring device is arranged between the above-mentioned box-shaped containers, and a conductor for electrically connecting the devices in each of the above-mentioned box-shaped containers is placed in each opposing part of each of these box-shaped containers. A gas-insulated switchgear characterized by comprising a flange connection portion through which the gas passes. 2. The gas-insulated switchgear according to claim 1, wherein each of the box-shaped containers is arranged so that at least one surface thereof is substantially in a straight line.