JPH076653Y2 - Gas insulated switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a gas-insulated switchgear in which a bushing and a transformer are connected by a switch.

(Prior Art) Generally, a substation is equipped with a line line and a bank line. As an example, a single connection as shown in FIG. 3 is adopted. That is, the disconnector 3A, 4A is connected between the bushing 1A and the transformer 2A.
The first line is configured by connecting A and the earthing switches 5A, 6A, 7A. Similarly, the bushing 1B, the transformer 2B disconnector 3B, 4B and the ground switch 5B, 6B, 7B constitute a second line. Further, the first line and the second line are connected by a third line consisting of a circuit breaker 8, disconnecting switches 9 and 10, and ground switches 11 and 12.

The arrangement of devices in the wiring diagram shown in FIG. 3 is conventionally as shown in FIG. That is, since all the devices were arranged in a plane, the installation area was large. In particular, bushings 1A and 1B have adopted the air insulation method,
And since all phases are arranged in a straight line, bushing 1A, 1
The spread of B is increasing.

(Problems to be Solved by the Invention) As described above, in the conventional gas-insulated switchgear, since all the devices are arranged in a plane, the installation area is increased. Therefore, it has been desired to provide a gas-insulated switchgear with a reduced installation area.

The present invention has been made to solve the above problems, and an object thereof is to provide a gas-insulated switchgear with a reduced installation area.

[Constitution of device]

(Means for Solving the Problem) A switch group is provided between two transformers facing each other in the transformer, the switch group is arranged on the first floor together with the transformer, and the bushing is provided on the upper part of the first floor. It is located on the second floor above the transformer.

(Operation) With this configuration, the entire gas-insulated switchgear can be three-dimensionally arranged, and the installation area can be reduced.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a front view, and on the first floor I, two transformers 13A and 13B are arranged facing each other with a predetermined distance. Further, bushings 14A, 14B are established on the second floor II above the first floor I at positions hitting the upper portions of the transformers 13A, 13B, respectively.

The first floor I is between the transformer 13A and the bushing 14A.
They are connected via disconnectors 15A and 16A arranged on the transformer 13B side. The disconnectors 15A and 16A are equipped with a ground switch. Further, the transformer 13A, the disconnectors 15A and 16A, and the bushing 14A are connected by a connecting bus bar.

Similarly, the first floor I is provided between the transformer 13B and the bushing 14B.
They are connected via disconnectors 15B and 16B arranged on the transformer 13A side. The disconnectors 15B and 16B are equipped with a ground switch. Further, the transformer 13B, the disconnectors 15B and 16B, and the bushing 14B are connected by a connecting bus bar.

Then, the disconnectors 15A, 16A and the disconnectors 15B, 16B are connected via a disconnector 17, a circuit breaker 18, and a disconnector 19 arranged in the first floor I. The disconnectors 17 and 19 are equipped with a ground switch.

Further, as shown in the plan view of FIG. 2, the bushings 14A and 14B shift each phase in the axial direction and the direction orthogonal to the axis.

In this embodiment, the disconnector 15A, 15B, 16A, 16B, 17, 19,
All the switch groups of the circuit breaker 18 are arranged between the transformers 13A and 13B and are located in the first floor I, and the bushing 14
A and 14B are provided on the second floor II above the transformers 13A and 13B. As a result, the gas-insulated switchgear can be arranged three-dimensionally, and the installation area can be greatly reduced.

Further, since the bushings 14A, 14B are arranged so that each phase is shifted in the axial direction and the direction orthogonal to the axis, the bushings 14A, 14B are
It is possible to shorten the interphase axial length of 14B.

Further, since the bushing 14A, 14B, which is an air insulation type, is arranged on the second floor II separately from the switch group, the safety for the worker at the time of inspecting the switch group is improved.

In this embodiment, the remaining switches are arranged substantially symmetrically on both sides of the circuit breaker 18 in FIG. 1, but instead of this, the remaining switches are arranged substantially symmetrically at the back and front of the circuit breaker. It can also be arranged. Also, the number of transformers, bushings, circuit breakers and disconnectors can be changed as required.

[Effect of device]

As described above, in the present invention, the switch group is provided between the two transformers facing each other inside the transformer, the switch group is provided on the first floor together with the transformer, and the bushing is provided on the upper part of the first floor. Since it is located on the second floor and above the transformer, the entire device can be arranged in a three-dimensional configuration, and a gas-insulated switchgear with a reduced installation area can be provided.

[Brief description of drawings]

FIG. 1 is a front view of a gas-insulated switchgear showing an embodiment of the present invention, FIG. 2 is a plan view of the gas-insulated switchgear shown in FIG. 1, and FIG. 3 is a single line of a general gas-insulated switchgear. Connection diagram,
FIG. 4 is a plan view showing a conventional gas-insulated switchgear. 13A, 13B ... Transformer, 14A, 14B ... Bushing, 15A, 15B, 16A,
16B ... disconnector, 17 ... disconnector, 18 ... breaker, 19 ... disconnector.

Claims (1)

[Scope of utility model registration request] 1. A gas insulated switchgear having a plurality of lines connecting a transformer and a bushing through a first switch group, and connecting these lines through a second switch group. In the above, the first and second switch groups are provided between two transformers arranged opposite to each other in the transformer, and the transformer and the first and second switch groups are arranged on the first floor. The gas-insulated switchgear is characterized in that the bushing is provided on the second floor above the first floor and above the transformer.