JP3146348B2 - Combined switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compound switchgear.

[0002]

2. Description of the Related Art For example, in a substation facility, when a drop-in line that is drawn in from the outside is branched into two lead-out lines via a breaker, and a disconnector or the like is connected to each lead-out line, each breaker and disconnection Device as one composite device,
Unitization has been performed.

In such a configuration, a circuit breaker mounted on a gantry is mainly used, and a conductor connected to one of fixed and movable electrodes arranged in the longitudinal direction of the circuit breaker is connected via a first bushing. And a conductor connected to the other electrode is branched, one branch conductor is connected to the first lead-out line via a disconnector and a second bushing, and the other branch conductor is disconnected. And a second lead-out line via the container and the third bushing.

However, according to the conventional structure, the first to third bushings are arranged in a straight line along the longitudinal direction of the circuit breaker. Therefore, the distance between the connection terminals at the upper end of each bushing is sufficiently long. To do so, the distance between each bushing must be sufficiently long. However, with such a configuration, the length of the circuit breaker in the longitudinal direction is increased, so that it is inevitable that the overall configuration becomes larger. The first to third bushings are arranged in parallel with three phases of a U-phase, a V-phase and a W-phase. In order to connect at least the second bushing to the lead-out line, a bus bar and a structure for supporting the bus bar are provided at the top. Is required.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a compound switchgear which requires one draw-in part and two draw-out parts,
Even if the distance between each of the lead-in portions and the bushings serving as the draw-out portions is sufficiently long, it is possible to avoid an increase in the overall configuration and to omit the bus and the structure in the line connection of the two draw-out portions. It is a problem to be solved.

[0006]

According to the present invention, there is provided a circuit breaker chamber accommodating a circuit breaker, and a fixed member connected to one end of the circuit breaker chamber and arranged in a longitudinal direction of the circuit breaker chamber. A first bushing for connecting one of the movable electrodes to the service line, and a first disconnect connected to the other end of the circuit breaker chamber and connected to the other electrode of the circuit breaker. A first disconnector chamber for accommodating the circuit breaker, a first connecting pipe connected to an upper portion of the first disconnector chamber and extending in a direction intersecting a longitudinal direction of the circuit breaker chamber; And a second disconnection pipe for connecting the first disconnector to the first lead-out line.
And the bushing is connected to the first disconnector chamber,
A second disconnector chamber for accommodating a second disconnector connected to the other electrode of the circuit breaker; and a second disconnector chamber connected to an upper portion of the second disconnector chamber, wherein A second connecting pipe extending in a direction intersecting with the first connecting pipe in a direction opposite to the first connecting pipe; and a second disconnecting switch provided at a tip of the second connecting pipe to connect the second disconnector to the second lead-out line. A third bushing is provided.

[0007]

1 to 6 show an embodiment of the present invention.
Shown in FIG. 6 is a circuit diagram shown by a single line connection, and FIGS. 1 to 5 show a composite switchgear for three phases of U phase, V phase and W phase. In FIG. 6, reference numeral 1 denotes a first bushing to which a drop-in line is connected, and reference numerals 2 and 3 denote a second bushing to which first and second pull-out lines are connected.
And a third bushing, 4 is a circuit breaker, and 5, 6 are first and second disconnectors. A conductor connected to one electrode of the circuit breaker 4 is connected to the bushing 1. Reference numeral 7 denotes an electric grounding device.

[0008] The circuit connected to the other electrode of the circuit breaker 4 is branched. One of the branch circuits is connected to the bushing 2 via the disconnector 5. 8 is a manual grounding device, and 9 is a current transformer. The other branch circuit is connected to the bushing 3 via the disconnector 6. 10 is a current transformer.

FIGS. 1 to 5 show configurations in which the circuit of FIG. 6 is embodied for U-phase to W-phase. First, the configuration of the U phase will be described. Reference numeral 11 denotes a circuit breaker room accommodating the circuit breaker 4.
This is arranged on the gantry 12 so that its longitudinal direction is along the lateral direction in the front view shown in FIG.

A grounding device chamber 13 for housing the grounding device 7 therein is connected to one end of the circuit breaker room 11 along the longitudinal direction, and a first bushing 1U is connected to an upper portion thereof. A first disconnector chamber 15 is connected to the other end of the circuit breaker chamber 11, and the first disconnector 5 is housed therein.

An L-shaped connecting pipe 1 is provided on the lateral side of the disconnector chamber 15.
6 is connected, and the connecting pipe 16 is connected to a connecting pipe 17.
However, a connecting pipe 18 is connected to the connecting pipe 17.
The connection pipe 18 extends forward as viewed from the front, in other words, toward the left in the plan view of FIG. The second bushing 2U is connected to the distal end of the connection pipe 18.

A second disconnector chamber 19 is connected to a lateral side of the disconnector chamber 15 along a direction perpendicular to the longitudinal direction of the circuit breaker chamber 11, and includes a second disconnector chamber. 6 and a grounding device 8 are housed. Connecting pipe 20 is provided in disconnector room 19.
However, a connecting pipe 21 is connected to the tip of the connecting pipe 20.

A connection pipe 22 extending from the connection pipe 21 to the rear as viewed from the front, in other words, to the right in the plan view of FIG. 1, is connected. The connection pipe 22 extends to the outside of the installation location of each of the V-phase and W-phase circuit breaker rooms. And this connecting pipe 22
A third bushing 3U is connected to the tip of the third bushing.

As will be understood from the above description, the first bushing 1U is connected to one end of the circuit breaker chamber 11, and the other end of the circuit breaker chamber 11 is connected to the front and rear as viewed from the front. The second and third bushings 2U, 3U are connected to the connection pipes 17, 22, respectively drawn out.
That is, the second and third bushings 2U and 3U are installed at locations where they are pulled out in a direction perpendicular to the left and right with respect to the longitudinal direction of the circuit breaker chamber 11.

The same applies to the V-phase and the W-phase. For the V-phase, at one end of the circuit breaker room 23, there is a grounding device chamber 24 for accommodating the grounding device 7, and the first bushing 1V Is installed. At the other end of the circuit breaker chamber 23, a first disconnector chamber 25 accommodating the disconnector 5, a disconnector 6,
A second disconnector room 26 for accommodating the grounding device 8 is provided, a second bushing 2V from the disconnector room 25 via a connection pipe 27, and a second bushing 2V from the disconnector room 26 via a connection pipe 28. And the third bushings 3V are connected to each other.

As for the W phase, there is a grounding device chamber 30 for accommodating the grounding device 7 at one end of the circuit breaker room 29.
Here, the first bushing 1W is provided. At the other end of the circuit breaker chamber 29, a first disconnector chamber 31 for storing the disconnector 5 and a second disconnector chamber 32 for storing the disconnector 6 and the grounding device 8 are installed. A second bushing 2W is connected from the device chamber 31 via a connection pipe 33, and a third bushing 3W is connected from the disconnector chamber 32 via a connection pipe. Reference numeral 35 denotes an operation box in which instruments for operating the circuit breaker, each disconnector, and the grounding device are stored. Reference numeral 36 denotes a support column for supporting the bushings 3U, 3V, and 3W with respect to the gantry 12.

That is, the circuit breaker chambers 11, 23, 29 of each phase
When the first bushings 1U to 1W are arranged side by side in the direction in which the circuit breaker chambers are arranged,
The 2W is led forward of one of the juxtaposed outermost circuit breaker rooms (thus leading out of the operation box 35).
The third bushings 3U to 3W are led out behind the other outermost circuit breaker chambers arranged side by side, and are arranged side by side. Therefore, each bushing of each phase is located at a place sufficiently far from each other. Therefore, even if the distance between the bushings is increased, it is not necessary to increase the size of the entire apparatus. Also, since one draw-in part and two draw-out parts are arranged in three directions, the line connection of the two draw-out parts can be directly connected. Therefore, a bus and a structure for supporting the bus are not required.

[0018]

As described above, according to the present invention, a circuit breaker, a disconnecting switch, and the like are combined, and in a combined switchgear having one drop-in portion and two pull-out portions, each of the drop-in portions and the pull-out portions is provided. The intervals between the bushings to be provided can be sufficiently widened without increasing the size of the device, and the line connection between the two drawers can be made directly, so that the bus bar and the structure can be omitted.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a front view in which a lower portion of an operation box and a gantry of FIG. 1 is omitted.

FIG. 5 is a rear view of FIG. 1;

FIG. 6 is a connection diagram for one phase in FIG. 1;

[Explanation of symbols]

 1U, 1V, 1W First bushing 2U, 2V, 2W Second bushing 3U, 3V, 3W Third bushing 11, 23, 29 Breaker room 13, 24, 30 Grounding device room 15, 25, 31 First Disconnector rooms 19, 26, 32 Second disconnector rooms 17, 27, 33 Connecting pipes 22, 28, 34 Connecting pipes

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tadao Shirai 18th repair ceremony at Teradocho, Mukoichi, Kyoto, Japan Inside Inoue Electric Works (72) Kenichiro Sasaki 18th repair ceremony at Teradocho, Mukoichi, Kyoto, Japan Stock Inoue Electric Works, Ltd. (72) Inventor Ikuo Tsubouchi, Kyoto 18-year repair ceremony at Terado-cho, Mukoichi, Kyoto Prefecture Inside Inoue Electric Works Co., Ltd. (56) References JP-A-8-33131 (JP, A) JP-A-11-41731 (JP, A) JP-A-11-41729 (JP, A) JP-A-10-271625 (JP, A A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02B 13/02 H02B 3/00

Claims (1)

(57) [Claims] 1. A circuit breaker chamber accommodating a circuit breaker, and one of fixed and movable electrodes connected to one end of the circuit breaker chamber and arranged in a longitudinal direction of the circuit breaker chamber. A first bushing for connecting to a service line, and a first disconnector connected to the other end of the circuit breaker chamber and connected to the other electrode of the circuit breaker. A first disconnector chamber, a first connection pipe connected to an upper portion of the first disconnector chamber, and extending in a direction intersecting a longitudinal direction of the circuit breaker chamber; A second bushing, which is provided at a distal end of a connection pipe and connects the first disconnector to a first lead-out line, and which is connected to the first disconnector chamber, The second connected to the other electrode
And a second disconnector chamber for accommodating the disconnector, and connected to an upper portion of the second disconnector chamber, in a direction opposite to the first connection pipe with respect to a longitudinal direction of the circuit breaker chamber. A second connecting pipe extending in the crossing direction; and a third bushing provided at a tip of the second connecting pipe and connecting the second disconnector to a second lead-out line. Composite switchgear.