JPH057922B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an arrangement configuration of a gas insulated switchgear which is equipped with an earthing switch, a disconnector, a voltage transformer, etc. in a grounding container in which a bus conductor is arranged. Regarding.

[Conventional technology]

Generally, gas insulated switchgear installed in a substation is connected to a main bus 1 via a main bus disconnect switch 2, depending on its form and specifications, for example, as shown in Figures 1 and 2. A shield breaker 5 equipped with an earthing switch 3 is connected, and an instrument current transformer 4 is provided before and after the shield breaker 5. The line disconnector 5 is connected to various circuits such as the units indicated by two-dot chain lines, that is, a line side earthing switch 6, a line side disconnecting switch 7, an instrument transformer 8, and a line earthing switch 9. changes. In particular, the position of the potential transformer provided on the line side is arranged to correspond to the line side disconnector. FIG. 1 shows a circuit in which a voltage transformer 8 is provided closer to the line than a line-side disconnector 7. In FIG. Further, FIG. 2 shows a circuit in which the voltage transformer 8 is provided closer to the disconnector 5 than the line-side disconnector 7.

The conventional arrangement for such circuits was to arrange the devices according to the circuit, that is, to arrange the devices arranged in the circuit in the correct order.

3 and 4 show conventional arrangements corresponding to the circuits of FIGS. 1 and 2, respectively. FIG. 3 shows, in order from the vertical breaker 5 to the line side, an instrument current transformer 4, a line side earthing switch 6, a line side disconnector 7, an instrument transformer 8, and a line earthing switch 9. It is placed as follows. Further, in FIG. 4, the order of the potential transformer 8 and the line-side disconnector 7 is reversed from that in FIG. 3, similar to the difference between the circuit of FIG. 1 and the circuit of FIG. 2.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, the switchgear is arranged differently each time due to changes in the circuit. For gas insulated switchgears, it is important to standardize them so that changes in the circuit can be handled with the same arrangement, but this has not been sufficiently considered. As a result, due to changes in circuit configuration, it is necessary to prepare equipment with a corresponding arrangement each time, and there is a problem that miniaturization cannot be achieved.

An object of the present invention is to provide a gas-insulated switchgear including a grounding switch, a disconnector, a voltage transformer, etc., which can be standardized and downsized.

[Means to solve the problem]

In order to achieve the above object, the present invention has a bus conductor arranged in a grounding container, and a grounding switch, a line-side disconnector, a voltage transformer, etc. attached to the grounding container. The instrument transformer and the line-side disconnector are arranged at positions substantially vertically opposed to each other in a direction substantially perpendicular to the arrangement direction of the bus conductor, and the instrument transformer and the line-side disconnector are arranged at positions centered on the arrangement position of the disconnector and the instrument transformer, The earthing switch is disposed on both sides of the earthing container at the same distance from the center.

[Effect]

The gas insulated switchgear of the present invention has the grounding switch arranged in the grounding container at the same distance from the center on both sides of the arrangement position of the instrument transformer and the line side disconnector. It is possible to cope with changes in the circuit by using the same container without changing the arrangement. As a result, work efficiency is good, standardization is possible, and the entire device can be downsized.

〔Example〕

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

FIG. 5 shows an embodiment of the present invention,
FIG. 2 is an internal sectional view corresponding to the electric circuit of FIG. 1;
In this figure, the same reference numerals as in FIG. 3 indicate the same or corresponding parts. In particular, this example shows a unit including a line-side disconnector 7, an instrument transformer 8, and a line earthing switch 9 than the line disconnector 5. The instrument transformer 8 and the line-side disconnector 7 are arranged in a direction substantially perpendicular to the direction in which the bus conductor 10 disposed in the grounding container extends, and moreover, they are arranged on substantially the same straight line, facing each other vertically. .

FIG. 6 shows an embodiment of the present invention,
FIG. 3 is an internal sectional view corresponding to the electric circuit of FIG. 2;
This example specifically shows the location corresponding to FIG. 5 by simply reversing the one in FIG.
The circuit shown in the figure can be satisfied.

FIG. 7 shows the above contents in terms of the overall arrangement. A line-side disconnector 7 and a potential transformer 8 are arranged substantially perpendicular to the direction in which the bus conductor 10 extends and on the same straight line, and a line-side earthing switch 6 is arranged around this composite unit. and line grounding switches 9 are arranged on both sides to have the same dimensions. With this structure, even if the circuits shown in FIG. 1 and FIG. The entire gas insulated switchgear can be downsized.

Further, in this configuration, the same effect can be obtained by rotating the above-mentioned container by 180 degrees.

〔Effect of the invention〕

According to the present invention, in the arrangement configuration of the gas insulated switchgear, the gas insulated switchgear can be configured using the same container without changing the external arrangement even in response to changes in the circuit. standardization becomes possible. Furthermore, since the instrument transformer and the line-side disconnector are arranged opposite to each other and substantially perpendicular to the bus conductor, the gas-insulated switchgear can be downsized.

[Brief explanation of the drawing]

1 and 2 are circuit diagrams to which the present invention is applied, FIG. 3 is a front view showing the conventional example in FIG. 1, FIG. 4 is a front view showing the conventional example in FIG. 2, and FIG. 5 6 is an embodiment of the present invention and is a sectional view corresponding to the circuit of FIG. 1, FIG. 6 is an embodiment of the present invention and is a sectional view corresponding to the circuit of FIG. 2, and FIG. FIG. 7 is a front view of another embodiment. 6... Line side grounding switch, 7... Line side disconnector, 8... Instrument transformer, 9... Line grounding switch, 10... Bus bar conductor.

Claims (1)

[Claims] 1 In a case where a bus conductor is arranged in a grounding container and a grounding switch, line-side disconnector, instrument transformer, etc. The potential transformer and the line-side disconnector are arranged at positions that are substantially vertically opposed to each other in the direction, and the same distance from the center is placed on both sides of the center at the location where the disconnector and the potential transformer are arranged. A gas insulated switchgear characterized in that the grounding switch is disposed in the grounding container.