JPS586018A - 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 is a gas-insulated switchgear, particularly a gas-insulated switchgear that is easy to transport, which reduces the amount of on-site assembly work, reduces the amount of on-site construction work, and improves overall reliability. The invention relates to a gas insulated switchgear configured to improve the performance of the gas insulated switchgear.

Generally, in order to reduce the amount of on-site work and improve reliability with the aim of reducing the construction costs of such equipment, it is necessary to perform as much of the necessary work within the factory as possible and reduce the amount of on-site work as much as possible. be.

However, if assembly work is carried out in a factory, the product will inevitably become larger and taller. When transporting such gas-insulated switchgear, there are height restrictions due to trailers and trucks. In particular, 3001V
In the gas-insulated switchgear of the above-mentioned high voltage class, the size of the circuit breaker is large, especially when the circuit breaker is arranged vertically, for example, as shown in Figure 1 of the attached drawings. Currently, it is difficult to realize a gas-insulated switchgear that can be transported in one piece.

That is, in FIG. 1, the symbol l is a circuit breaker, /a-
i its operating mechanism, lb is the stand, ko is the current transformer, 3 is the bus bar,
Ja is the stand, da and j are the disconnectors, 6 is the cable head, Aa is the cable, Ab is the stand based on the cable head,
7 is a grounding switch, S is a bus bar, and D is a pace. In the conventional device configured in this way, the disconnector 3 at the branch
Since it is located on the busbar 3 and is already high, and the breaker l is large, it has the disadvantage that the overall height is extremely high.

The present invention consists of 1. It is an object of the present invention to overcome such conventional drawbacks and to obtain a gas-insulated switchgear that can be transported with a reduced height.

Additionally, in cases where movable equipment such as circuit breakers and disconnectors are used, metal powder is generated due to wear of the sliding parts during operation, and this falls onto and adheres to the horizontally arranged insulating spacer, causing the spacer to become damaged. Although there is a drawback that the insulation property is lowered and, as a result, the insulation reliability is lowered, the present invention eliminates this drawback and improves the insulation reliability by the arrangement of the circuit breaker and the disconnector. That,
This is an objective in addition to the above.

In order to achieve this object, the present invention includes at least one set of phase-separated type breaker provided at a branch part arranged in the horizontal force direction of one side of the phase-separated type breaker; vessel t
It is characterized by having busbars arranged and connected in an upward direction.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings showing embodiments thereof.

FIG. 2 shows an embodiment of the present invention, which is a double-bus type switchgear, and a single line diagram for seven lines is shown in FIG. 3. In this figure and figure 3, the symbol /
1 is a vertical disconnector with a main container, and two sets of disconnectors 13 are connected to the lower branch via a current transformer 12. At the bottom of 3, a pedestal /Ja with the minimum required width is installed with a pace on top,
Almost above it, a three-phase talking bus IQ is arranged. In addition, at the upper branch of the circuit breaker/l,
Similar to the conventional device, one set of disconnectors is connected via a current transformer, and a cable head 6 is further connected to the cable 4a, trestle tb, bus g and pace 9.
is the same as the conventional device.

Since the gas insulated switchgear of the present invention is configured in this way, the three-phase collective bus l is provided in the space above the disconnector 13.
Therefore, the entire lower branch can be installed low, the height of the breaker /l can be effectively utilized, and furthermore, the operating mechanism / of the breaker /l can be
By installing /a on the side, you can create a stand for the breaker //.
The device of the present invention has the effect that /b can be minimized and the entire breaker /l can be installed low, and therefore the height H of the entire gas insulated switchgear can be minimized and kept within the transport limit. There is. Therefore, with the device of the present invention, the amount of work at the site can be reduced because it can be transported in one piece. This is particularly effective in the case of a breaker having two or more breaking points, 30011 or more, or a breaker with a large amount of i.

Further, in such a device of the present invention, the breaker t
i and the disconnector 13 are mainly arranged at the bottom of the gas insulated switchgear, the insulating spacer is arranged vertically, or
It is placed horizontally at the top end of each device, so that gold powder and other foreign substances from each circuit breaker and disconnector do not fall onto the insulating spacer and accumulate on it, reducing the insulation properties of the insulating spacer. Therefore, there is an effect that insulation reliability does not deteriorate. Furthermore, since the disconnectors are arranged in a straight line, there is also the advantage that the three-phase simultaneous operation of the disconnectors becomes easier.

Next, in FIG. 2, an embodiment related to a three-phase-talk type bus bar/da was explained, but as shown in FIG. q, the bus bar i
4I may be replaced by a phase-separated bus bar 1, and even in this case, the effect is no different from the effect of the above embodiment.

In addition, in the embodiments shown in Figure 1 and Figure 1, the main container of the circuit breaker is arranged almost vertically, but even if it is arranged almost horizontally, the effect described above is still the same. Almost the same effects as in the second embodiment can be achieved.

Furthermore, in both of the above embodiments, the upper branch of the circuit breaker /, // passes above the busbars lda, -7, but this branch extends in the direction opposite to the busbars /da, -/. However, the effect will not change at all, and the busbars need not be limited to the double busbar system, but the triple busbar system/
//2 The OB system and the ring bus system have similar effects, so there is no particular restriction on the single line diagram. Furthermore, in both of the above embodiments, the circuit breakers /, // and the disconnector /3 are connected via the current transformer /, but the current transformer /
Since the presence or absence of this does not affect the effect of the present invention, they may be connected directly or may be connected through other parts. Further, the arrangement of the earthing switchgear 7 is also partially omitted because it does not particularly affect the effect.

[Brief explanation of the drawing]

Fig. 1 is a schematic external layout diagram of an example of a gas insulated switchgear for a conventional double-bus type substation, Fig. 2 is a schematic external layout diagram of an embodiment of the device of the present invention, and Fig. 3 is its outline layout. Figure q, which is a single line diagram for one line, is a schematic external layout diagram of another embodiment of the device of the present invention. i, ti--breaker, /a, / /a...operation mechanism, /b, Ab, //b, /, 7a--frame, -2l--current transformer, J, /4', 2/... bus line, da. 5.13...Disconnector, 6...Cable head, 6a...
Cable, 7...Earth switch, g...Bus bar, 9...Pace. Flame 1 figure Flame 2 figure 3

Claims (4)

[Claims] (1) A small set of phase-separated type disconnectors installed at one branch section of the phase-separated type breaker arranged in a substantially horizontal direction; A gas insulated switchgear characterized by having a bus bar. (2) At least one set of phase-separated disconnectors provided at a branch section disposed substantially horizontally on one side of the phase-separated type circuit breaker has a bus bar arranged and connected in a substantially upward direction. The gas insulated switchgear according to claim 1, which is a shaped bus bar. (3) The connecting busbars are arranged in a triangular arrangement, and the connecting busbars are arranged in a triangular arrangement. The gas insulated switchgear according to claim 1, which is a phase-separated bus bar. (4) The gas insulated switchgear according to any one of claims 1 to 3, wherein the main container of the breaker is arranged in a substantially vertical direction.