JPS60219905A - Gas insulated switching device - 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] [Technical Field of the Invention] The present invention relates to a gas insulated switchgear, particularly a multi-bus type substation,
This invention relates to gas-insulated switchgear used in switchyards and the like.

[Technical background of the invention and its problems]

Gas-insulated switchgears have become widely used in recent years as the demand for electricity in urban areas has increased, allowing them to be installed in narrow urban spaces and harmonizing with the surrounding environment. In addition, gas insulated switchgears are increasingly equipped with higher voltages and larger capacities, and are required to be further miniaturized, improved in reliability, and simplified in maintenance.

Figure 1 shows a general double bus system - single line connection diagram for a line. CB is a breaker, and one side of the breaker is connected to a cable via a line disconnector Ds3 and a line grounding device ES. connected to the section CH. The other side of the breaker is branched into two parts, and is connected to the main bus BU via a disconnect switch Ds1 for the main bus BUS1 and a disconnect switch DS2 for the main bus BUS2, respectively.
SI, connected to BUS2.

A typical arrangement configuration example in such a single line diagram is:
It was as shown in Figure 2. That is, the breaker 1 is arranged perpendicularly to the installation surface, and the lower branch outlet is connected to the connection bus 9 parallel to the installation surface with the main buses 2 and 3 and the disconnectors 4 and 5, respectively.
are connected via.

On the other hand, the upper branch outlet of the breaker 1 is connected to the cable connection part 8 via the disconnector 6 and the grounding device 7. A long connection bus bar 1o is installed between the branch outlet and the disconnector 6.

In the gas insulated switchgear having the configuration as shown in FIG.
%, the configuration is complicated. In addition, in order to hold the upper level equipment, it is necessary to support it with a strong pedestal, which requires a large amount of materials.

[Purpose of the invention]

The present invention was developed in view of the above circumstances, and it eliminates the need for connection busbars connecting each device, greatly reduces the width and size of the support frame, and reduces the installation space. The purpose is to provide insulated switchgear.

[Summary of the invention]

In order to achieve the above object, according to the present invention, a breaker part that approaches and separates in the axial direction of the container is housed in a breaker container vertically arranged on the installation surface, and the breaker parts are led out from both ends of the container to the outside of the container. A current-carrying conductor branched into two is led out from a pair of branch outlets in each of two sets provided in a direction perpendicular to the container axis, and a disconnector and a disconnector are connected to each pair of branch outlets in the set.
The cable connection container is connected to one of the pair of branch exit portions of the other set, and parallel to the breaker container axis of the current-carrying conductor. By arranging current transformers in the sections, there are almost no connecting busbars.

[Embodiments of the invention]

The present invention will be explained below using the drawings.

FIG. 3 shows an embodiment of the gas insulated switchgear according to the present invention.The interrupter main body 30 includes a container 3 disposed perpendicularly to the installation surface BK, and a container 31 housed inside the container 31. A breaker section 32 is provided with fixed and movable electrodes that open and separate in the axial direction of the breaker section 32, and an energization section that is branched into two parts perpendicular to the axis of the breaker that is led out from both ends of the breaker section 32. Conductor 33 (33a.

J J b ) J 4 (34a * J 4 b
). Further, a current transformer 40 is disposed at a current-carrying conductor portion 33c that connects the current-carrying conductor 33 arranged parallel to the axis of the container 3 near the breaker portion 32. Shutoff part 3
Current-carrying conductors 33g and 33b led out from one end (upper end in the figure) of 2 through a current-carrying conductor portion 33c are placed above the container 31 on an axis perpendicular to the axis of the container 31, facing each other across the axis. They are respectively led out from the branch outlet portions 31a and 31b. In addition, the current-carrying conductors 34* and 34b led out from the other end (lower end in the figure) of the breaker 32 are connected to the container 3.
1 and the opening portion 31a,
a branch outlet 31c provided parallel to the axis of 31b;
It is derived from 31d.

The branch outlet parts 31a and 31b are connected to a disconnector 35.
The main busbars 42 and 43, which are integrated with 36, are connected.

In addition, a cable connecting portion container 45 housing a cable connection portion 39 via a disconnector 37 and a grounding device 38 is installed with its axis line at the 10,000th outlet portion 31g of the other branch outlet portions 31c and 31d. Connected horizontally to the surface. Furthermore, an instrument transformer 41 is connected to another branch outlet 31bt/C. An operating device 46 of the breaker section 32 is disposed at the lower end of the breaker container 3 in the axial direction, and the operating device 46 drives the movable electrode of the breaker section 32 via an operating rod (not shown). Incidentally, an insulating spacer S for a gas compartment is arranged at each of the branch outlets 31g, 31b, 31c and JJd of the breaker container 3, and current-carrying conductors 33m, 33b, 34g, 34b are connected through the insulating spacer S.
is derived. 44 is a control panel placed on the installation surface.

FIG. 4 shows another configuration example according to the present invention, in which the same components as those in FIG. 3 are given the same reference numerals. And the breaker body 3Q is the third
It has the same configuration as the figure. The branch outlet portions 31m and 31b provided above the breaker container 3 in the figure have main busbars integrated with disconnectors 35 and 36 installed at opposing positions across the container axis of the breaker container 31. 42.43 is connected. A branch outlet located at the lower part of the breaker container 31 in the drawing: The cables are connected parallel to the axis of the container 31 and with the cables drawn out in the direction of the installation surface B. Also,
An instrument transformer 4 is connected to the other branch outlet 3k.

As shown in FIGS. 3 and 4, the vertical breaker body 30
At positions perpendicular to the axis of the container 31 and opposite to each other across the axis, there are four upper and lower branch openings 31a,
31b and 31C.

31d, and disconnectors 35 and 36 are integrated into one set of openings above or below this branch opening on a plane perpendicular to the axis of the circuit breaker container 3. 43, it is possible to eliminate the need for a connection bus bar between devices, and it is possible to reduce the width dimension W2 and height dimension H2 of the entire configuration. In addition, with such a configuration, the main bus bar can be connected to one set of outlet parts located above or below the breaker, and the disconnector 37 and the grounding device 38fc can be connected to the other set of outlet parts.
A cable connection part container 45 housing the cable connection part 40 and the potential transformer 4 can be connected through the cable connection part 40. Since these main busbars, cable connections, and voltage transformers are supported by the breaker 30, the width of the support frame can be greatly reduced.

〔Effect of the invention〕

As described above, according to the present invention, an installation space can be reduced, and a gas insulated switchgear that is inexpensive and has excellent earthquake resistance can be obtained.

[Brief explanation of drawings]

Figure 1 is a general single line diagram of a multi-bus substation, etc.
Fig. 2 is a block diagram showing a conventional gas insulated switchgear, and Figs. 3 and 4 are block diagrams showing different embodiments of the gas insulated switchgear of the present invention. ...breaker container, 31a
. 31b, 31c, 31d... branch outlet, 3
2... Breaking part, 33.34... Main bus bar, 35,3
6゜37...Disconnector, 38...Grounding device, 39...
・Cable connection part, 40...Cable connection part, 4-
...Instrument transformer, 42.43...Main bus, 45...
・Cable connection container. Applicant's agent Patent attorney Takehiko Suzue Figure 2 1n Figure 3

Claims (1)

[Claims] (1) In a breaker container filled with insulating gas and arranged so that the axial direction is perpendicular to the installation surface, there is a fixed side and a A breaker having a movable side electrode is housed and arranged, and a current-carrying conductor led out from one end of the breaker is branched into two, perpendicular to the breaker container axis and sandwiching the container axis. Facing each other, 1st. The current-carrying conductors respectively led out to the second branch outlet portions and led out from the other end of the breaker portion are connected to the third conductors facing each other across the axis of the breaker container. A gas breaker is configured by branching into two and leading out to a fourth branch outlet, and a current-carrying conductor at one end of the breaker is arranged parallel to the axis of the container before being branched into two. A current transformer is arranged in the conductor part, and two main busbars, which are integrated with a disconnector, are connected to one set of branch outlets led out from the breaker, and the axis of this main busbar is connected to the breaker. A disconnector grounding device or the like is disposed at a symmetrical position M centering on the axis of the breaker container in a direction perpendicular to the axis, and a disconnector grounding device or the like is installed at one side of the branch outlet of the other set of branch outlets of the breaker. A gas-insulated switchgear equipped with a cable connection container housing a cable connection section that is connected through a cable connection section. (?) The gas insulated switchgear according to claim 1, wherein the cable connection portion container is pulled out in the direction of the installation surface so as to be parallel to the breaker container axis. (3) The cable connection portion container is a gas battery equipped with a meter transformer as set forth in claim 1, wherein an instrument transformer is attached to the other branch outlet portion of the other pair of branch outlet portions facing each other. Insulated switchgear.