JPH0787647B2 - Substation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a substation device in which a primary side gas insulated switchgear and a secondary side gas insulated switchgear are connected to a primary side and a secondary side of a transformer, respectively. Regarding

[Prior Art] Generally, a substation device in which a primary gas-insulated switchgear is connected to a primary side of a transformer and a secondary gas-insulated switchgear is connected to a secondary side is, for example,・ As shown on page 8 of the discussion material submitted by Kansai Electric Power Co., Inc. of CIGRE 1978 Group 23, G.R.E., 1978, multiple transformers are arranged side by side. A primary gas-insulated switchgear was arranged on one side perpendicular to the juxtaposed direction of this transformer, and each of these devices was connected by a gas busbar.

[Problems to be solved by the invention]

Since this type of conventional substation device is as described above,
If an accident occurs in a transformer and you try to carry it out, or if you want to carry in a repaired transformer, enclose the transformer in the primary gas-insulated switchgear and the secondary gas. The work was extremely difficult due to the existence of the insulating switchgear and the gas bus bar, and required a lot of time and labor.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a substation device in which a transformer can be easily loaded and unloaded.

[Means for solving problems]

In order to achieve the above object, the present invention arranges a primary-side gas-insulated switchgear and a secondary-side gas-insulated switchgear on one side perpendicular to the juxtaposed direction of a plurality of transformers, and A loading / unloading path for the transformer is formed on the side of.

[Action]

Since the substation device according to the present invention has the above-mentioned configuration,
Even if the transformer should fail, the transformer can be easily carried in and out from the carry-in / carry-out passage without obstructing the primary gas-insulated switchgear, the secondary gas-insulated switchgear, or the gas busbar. it can.

〔Example〕

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

FIG. 2 shows a skeleton of a substation device as an application example of the present invention. Each of the devices constituting the primary-side gas insulated switchgear 1 is connected to the primary side of the two transformers 11-1 and 11-2, and the constituent devices are the circuit breakers 4, 5, 6 and Shown including current transformer CT and disconnector DS provided at both ends, grounding switch ES provided as required, gas busbars 7 and 8 for connecting to a transformer, bushing 3 and the like. It is connected as shown.

Further, the devices constituting the secondary gas-insulated switchgear 2 are connected to the secondary sides of the transformers 11-1 and 11-2, and this device, like the primary-side gas-insulated switchgear 1, has a circuit breaker CB. , Instrument current transformer CT, disconnector DS, grounding switch ES, cable head CH, and also instrument transformer PT etc. are connected as shown in the figure.

The first substation device configured to correspond to the skeleton in the figure
Shown in the figure.

The transformers 11-1 and 11-2 are arranged side by side on an imaginary line, and the primary side gas insulated switchgear 1 and the secondary side gas insulated switchgear 2 are formed on one side perpendicular to the imaginary line. There is. On the other hand, transformers 11-1, 11-2 are installed on the other side perpendicular to the juxtaposition direction.
A passage for loading and unloading is provided for the primary and secondary gas-insulated switchgear 1, 2.

The primary gas-insulated switchgear 1 comprises circuit breakers 4 and 5 and the associated devices of FIG. 2 on a line substantially parallel to the juxtaposed direction of transformers, and a bushing 3 is provided at one end thereof.
The parallel line is bent at a right angle from the middle to form the circuit breaker 6 and the respective devices of FIG. 2 accompanying it, and the other end is led out by the bushing 3. This primary side gas insulated switchgear 1 is connected to the primary side of the transformers 11-1 and 11-2 by gas buses 7 and 8. Further, the secondary gas-insulated switchgear 2 is configured in parallel with a part of the primary gas-insulated switchgear 1 that is substantially parallel to the juxtaposed direction of the transformers, and one end thereof is provided with the transformers 11-1, 11.
-2 is connected by three-phase collective type gas bus bars 12 and 13 connected to the secondary side. Portions 12a and 13a of the gas buses 12 and 13 located between the facing portions of the primary-side gas-insulated switchgear 1 and the secondary-side gas-insulated switchgear 2 are buried underground as described later. By constructing the parts 12a and 13a with a certain axial length, a space 14 for inspection is formed at the facing portion of the gas insulated switchgear 1, 2 and the gas insulated switchgear from the inspection space 14 is formed. Maintenance of 1 and 2 equipment is performed. The invasion into the inspection space 14 is further facilitated by the portions 12a and 13a buried underground of the gas bus lines 12 and 13.

FIG. 3 is a sectional view taken along the line AA in FIG.
A phase-separated type gas busbar 7 connected to the primary side of the transformer 11-2 is arranged between 5 and the primary side of the transformer 11-1 between the circuit breaker 5 and the circuit breaker 6 not shown in the figure. A phase-separated type gas busbar 8 connected to is arranged. In addition, three-phase integrated gas buses 12 and 13 connected to the secondary sides of the transformers 11-1 and 11-2 are arranged near both gas buses 7 and 8. This gas bus 1
Lower portions of both gas-insulated switchgear 1, 2 in 2 and 13 are arranged on the ground, and at opposite portions of both gas-insulated switchgear 1, 2 are buried in the ground like parts 12a, 13a.

FIG. 4 is a sectional view taken along the line BB in FIG. 1, and particularly shows the gas bus 12 connected to the secondary side of the transformer 11-2. The gas busbar 12 has a portion 12a corresponding to the inspection space 14 formed between the facing portions of the two gas insulated switchgears 1 and 2 buried in the ground. Therefore, the gas bus bar 12 does not hinder the movement of the wrench or the like into the inspection space 14.

FIG. 5 is a sectional view taken along the line CC of FIG.
-1 shows a gas busbar 7 connected to the primary side and a gas busbar 13 connected to the secondary side, which has the same configuration as that of the transformer 11-2 described above, and particularly corresponds to the inspection space 14 The portion 13a of 13 is buried in the ground.

Now, in the configuration of FIG. 1, in the event that the transformer 11-1 fails and is taken out, this work and carry-out are performed from the carry-in / carry-in passage. It is not subject to the restrictions of both gas-insulated switchgear 1, 2. Therefore, between the two gas-insulated switchgears 1 and 2, and between the transformers 11-1 and 11-2 and the primary-side gas-insulated switchgear 1, the characteristics of the gas-insulated method are used without considering the loading and unloading of the transformer. Can be placed close together. The gas busbars 12 and 13 that connect the gas-insulated switchgear located farther from the transformers 11-1 and 11-2 and the transformer are buried in the ground between the gas-insulated switchgear 1 and 2. The inspection space 14 formed in the same portion can be effectively used for maintenance and inspection.

Although two transformers are used in the above embodiment, the present invention can be similarly applied to a system in which another transformer is further provided in the transformer side-by-side direction.

〔The invention's effect〕

As described above, the present invention arranges the primary-side gas-insulated switchgear and the secondary-side gas-insulated switchgear on one side perpendicular to the juxtaposed direction of the transformers, and the transformer carry-in / carry-out passage on the opposite side. Since the transformer is formed, even if an accident occurs in the transformer, it can be easily carried in and out by using the carry-in / carry-out passage without the gas-insulated switchgear interfering. Moreover, since the gas-insulated switchgear is not made large by the type of the carrying-in / carrying-out passage as in the conventional case, the substation apparatus with a small installation space can be obtained by utilizing the gas-insulating method.

[Brief description of drawings]

FIG. 1 is a plan view of a substation device according to an embodiment of the present invention,
2 is a skeleton diagram showing one row of a substation device to which the present invention is applied, FIG. 3 is a sectional view taken along the line AA of FIG. 1,
4 is a sectional view taken along the line BB of FIG. 1, and FIG. 5 is a sectional view taken along the line CC of FIG. 1 …… Primary side gas-insulated switchgear, 2 …… Secondary side gas-insulated switchgear, 7, 8 …… Gas busbar, 11-1, 11-2 …… Transformer, 12, 1
3 …… Gas bus, 14 …… Inspection space.

Claims (4)

[Claims] 1. A plurality of transformers arranged side by side, a primary side gas insulated switchgear connected to the primary side of these transformers, and a secondary side gas insulated switchgear connected to the secondary side of the transformer. In the substation device consisting of, on one side perpendicular to the juxtaposition direction of each of the transformers, the primary gas-insulated switchgear and the secondary gas-insulated switchgear are configured, on the other side perpendicular to the juxtaposition direction. A substation device, characterized in that a carrying-in / carrying-in passage of each of the above transformers is formed. 2. The apparatus according to claim 1, wherein at least a part of the primary side gas insulated switchgear and the secondary side gas insulated switchgear are configured substantially parallel to the juxtaposed direction. Substation equipment characterized by the above. 3. The apparatus according to claim 1, wherein the primary gas-insulated switchgear and the secondary gas-insulated switchgear have a check space formed between them. Substation equipment characterized by. 4. The apparatus according to claim 3, wherein the primary side gas insulated switchgear and the secondary side gas insulated switchgear are connected to the primary side and the secondary side of each transformer. A substation device having a gas bus bar, wherein the gas bus bar of the gas insulated switchgear arranged farther from the transformer has a portion corresponding to the inspection space buried in the ground. .