JPS5815410A - 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 The present invention relates to a phase-separated double-bus type gas-insulated openable bag.

Generally, in high-voltage, large-capacity gas-insulated switchgear, a method is adopted in which the circuit breaker is placed horizontally. However, in the phase-separated double bus system, the main bus bar connected to one end of the breaker has a total of six bus bars for each phase arranged horizontally or vertically. To line up horizontally, place the long main bus bar near the attachment surface with heavy equipment. ＜As it turned out,
Desirable for earthquake resistance. However, the problem with this type of configuration is that the axial direction of the breaker and the juxtaposition direction of the main busbar are the same.
This requires a somewhat larger installation area in the same direction.

SUMMARY OF THE INVENTION An object of the present invention is to provide a gas insulated switchgear that prevents an increase in the size of a horizontally arranged circuit breaker in the axial direction.

The present invention suppresses the size of the breaker in the axial direction by arranging it in two stages below all the double main lines. 'Also,
This arrangement of the main busbars requires a horizontal insulation board, which causes a drop in insulation performance. Therefore, we devised the position of the main bus bars in the same phase so that we could obtain the necessary gas division without using all the secondary insulating spacers by placing them horizontally.

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

The circuit breaker 1, which is arranged horizontally as shown in FIG. 1, has both terminals of the insulation board 1 and 2 formed inside the circuit breaker 1 linearly led out through insulating strips 3.4. One terminal is connected to insulation lead-out means such as a lashing 6 via a disconnector 5. The other terminal is led out via a horizontal conductor 7f.

On the other hand, the main busbars are arranged in two planes above and below the axis of the breaker 1. The main busbars 8 of the first group are arranged in the order of U phase, ■ phase, and W phase, while the main busbars 9 of the second group are arranged in the order of W phase and U phase.

(2) The main busbars 9 of the second group are arranged in parallel in the order of the phases, and are arranged almost directly below the main busbar 8 of the first group.

To explain the U phase in detail, a first container 13 is connected to the container 10 of the conductor 7 via a bellows 11 and an insulating spacer 12, and a second container 15 is further connected to the container 10 via an insulating spacer 14. . If the inside of both containers 13 and 15 is detailed in FIG. 2, there is a connecting conductor 16 coaxially connected to the conductor 7, and this connecting conductor 16 is
．． It is supported by 14. A fixed contact 17 is provided on the connecting conductor 16 in the first container 13, and a fixed contact 18 is provided on the connecting conductor 16 in the second container 15. The movable contact 19 facing the fixed contact 17 is electrically connected to the bus conductor 20 and can be opened and closed by an operating device 21. A movable contact 22 facing the fixed contact 18 is electrically connected to a bus conductor 23 and is opened and closed by an operating device 24 .

In this way, by shifting the U-phase double busbars 8u and 9ui instead of aligning them vertically, the vertical insulating spacers 12 and 14
It is possible to separate the gas between both disconnectors. V has the same structure as this U phase (therefore, V consisting of main busbars 8v and 9v)
The phase is composed of

The W phase consists of main busbars 8W and 9w, and a conductor for connection is added between both containers.

Therefore, foreign matter that causes a problem when using horizontal insulating spacers, that is, a decrease in insulation #fEE, does not accumulate on the insulating spacers.

Main generatrix su, sv placed on the upper horizontal plane.

8W can be supported in various ways. Figure 3 shows an example,
The main bus bar 8u is supported and fixed via the main bus bar 9W (r), and the main bus bar 8v is supported and fixed via the main bus bar 9u. It can be supported via the main bus bar 9 located on a horizontal plane, and the separate pedestals and the like can be simplified.

As explained above, in the present invention, the main generatrix line 8 disposed on the first horizontal plane and the main generatrix line 9 disposed on the second horizontal plane are arranged so that they are not in the same phase vertically, e.g. Placed at the top of the phase, the lower part is V.

The W and U phases are arranged in that order, and insulating spacers are installed horizontally to partition the gas between the disconnectors, which prevents the breakers from increasing in the axial direction and also prevents the dielectric strength voltage of the insulating spacers from decreasing. be able to.

[Brief explanation of drawings]

Fig. 1 is a partially sectional front view showing one embodiment of the gas insulated switchgear of the present invention, Fig. 2 is an enlarged view of the main part of Fig. 1, and Fig. 3 is a gas insulated switchgear according to another embodiment of the present invention. FIG. 1... Breaker, 8u, 8V, 8W, 9u, 9V1
9W...Main bus bar, 12...Insulating spacer, 13...
- Container, 14... Insulating spacer, 15... Container. Agent Patent Attorney Akio Takahashi

Claims (1)

[Claims] ■. A double main busbar with a phase-separated configuration is connected to one terminal of a breaker arranged horizontally through a disconnector, and two In addition to arranging them on the horizontal plane, they are also staggered so that those of the same phase of both of the above-mentioned main and four disconnectors do not correspond to the bottom of -L, and the two above-mentioned disconnectors are separated gaseously by an insulating space provided vertically. All features are gas insulated switchgear. 2. The gas insulated switchgear according to claim 1, wherein the main busbar disposed on the upper horizontal plane is supported via the main busbar disposed on the lower horizontal plane.