JP3106354B2 - 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, disconnection, etc. 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 configuration, the first to third bushings are arranged in a straight line along the longitudinal direction of the circuit breaker, so that 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. In addition, the first to third bushings are arranged so that three phases of U-phase, V-phase and W-phase are parallel to each other. Structure 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 and movable arrangement connected to one end of the circuit breaker chamber and arranged in the longitudinal direction of the circuit breaker. A first bushing for connecting one of the electrodes to the 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 for housing the first disconnector, the first disconnector chamber being connected to the first disconnector;
And a second bushing connected to the lead-out line of the circuit breaker, the second bushing being connected to the first disconnector chamber, being outside the circuit breaker chamber along the longitudinal direction, and connected to the other electrode of the circuit breaker. A second disconnector chamber for accommodating the second disconnector; a second disconnector chamber provided above the second disconnector chamber and connected to the second disconnector and connected to a second lead-out line; A third bushing, a connection pipe extending in a direction intersecting the longitudinal direction of the circuit breaker chamber is connected to an upper portion of the first disconnector chamber, and a second bushing is provided at a tip of the connection pipe. It is characterized by the following.

[0007]

FIG. 1 shows a first embodiment of the present invention.
6 to FIG. 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 line to which a drop-in line is connected.
Bushings 2, 3 are second and third bushings to which the first and second outgoing lines are connected, 4 is a circuit breaker, 5, 6
Denotes 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 an electric grounding device, and 9 is a lightning arrester. The other branch circuit is freely grounded by a manual grounding device 10 and is connected to the bushing 3 via a disconnector 6. 11 is an electric grounding device, and 12 is a lightning arrester.

FIGS. 1 to 5 show configurations in which the circuit of FIG. 6 is embodied for U-phase to W-phase. Reference numeral 13 denotes a circuit breaker chamber that houses the circuit breaker 4, which is arranged on the gantry 14 so that its longitudinal direction extends along the lateral direction in the front view shown in FIG. A grounding device chamber 15 that houses the grounding device 7 therein is connected to one end of the circuit breaker room 13 along the longitudinal direction, and the bushing 1 is mounted on an upper portion of the grounding device room 15.

The other end of the circuit breaker chamber 13 has a disconnector 5
And a disconnecting switch room 16 for accommodating the grounding device 8. 17A is an arrester room in which the arrester 9 is stored, and is connected to the disconnector room 16. A grounding device chamber 18 that houses the grounding device 10 is connected to the outside of the circuit breaker room 13 along the longitudinal direction, and a grounding device 11 and a disconnector room 19 that stores the disconnector 6 are connected to the outside. Disconnector room 19
The bushing 3 is mounted on the upper part of. 17B is a lightning arrester room in which the lightning arrester 12 is housed, which is connected to the disconnector room 19.

The bushings 2, 3 are provided with current transformers 20, 21, respectively. Reference numeral 23 denotes an operation box in which instruments for driving and operating each circuit breaker, disconnector, and electric grounding device are stored. In addition, each circuit breaker room, disconnector room, and grounding device room are filled with an insulating gas.

In the first embodiment, a connection pipe 24 extending in a direction intersecting the longitudinal direction of the circuit breaker chamber 13 is connected to an upper portion of the disconnector chamber 16 of each phase. Is provided with a bushing 2. Bushing for each phase 2
As is clear from the plan view of FIG. 1, they are derived so as to be arranged outside (the right side) of the bushings 1 and 3 of the outermost phase (the U phase in the example of the figure). 25 is bushing 2
Is a supporting column for supporting the tip of the base on the gantry 14.

As will be understood from these descriptions, in the present invention, when the drawers are installed at three places along the longitudinal direction of the circuit breaker chamber 13, the bushings 1, 3 are installed at the drawers at both ends thereof. However, the middle drawer is orthogonal to the direction intersecting with the longitudinal direction of the circuit breaker chamber 13, in the example of the figure, backward (to the right in the plan view of FIG. 1) as viewed from the front. In this configuration, the bushing 2 is installed at the leading end.

According to this configuration, the distance between the bushings 1 and 3 can be sufficiently set, and furthermore, each bushing 1 and 3 can be provided.
The distance between 3 and bushing 2 can likewise be sufficient. 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 drawers can be directly connected. Therefore, a bus and a structure for supporting the bus are not required.

In the above-described first embodiment, the bushing 2 is drawn to the right in the plan view of FIG. 1, but may be drawn to the left. 7 to 11 show the embodiment, and FIG. 12 shows a single-line diagram corresponding to the arrangement. In this case, since the bushing 2 is located above the operation box 23, the length in the front-rear direction is shorter than that in the first embodiment.

[0016]

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 made sufficiently wide 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 a first 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 of FIG. 1;

FIG. 7 is a plan view showing a second embodiment of the present invention.

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a front view of FIG. 7;

FIG. 10 is a front view in which the lower part of the operation box and the gantry of FIG. 7 is omitted.

FIG. 11 is a rear view of FIG. 7;

FIG. 12 is a connection diagram for one phase of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st bushing 2 2nd bushing 3 3rd bushing 13 Circuit breaker room 16 1st disconnector room 19 2nd disconnector room 24 Connecting pipe

──────────────────────────────────────────────────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-11-41730 (JP, A) JP-A-11-41729 (JP, A) JP-A-8-33131 (JP, A) JP-A-10-271625 (JP, A A) Patent 2576739 (JP, B2) (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 the longitudinal direction of the circuit breaker. A first bushing for connecting to a service line, and a first bushing connected to the other end of the circuit breaker chamber for receiving a first disconnector connected to the other electrode of the circuit breaker. A first disconnector chamber, a second bushing connected to the first disconnector, connected to a first lead-out line, and a second bushing connected to the first disconnector chamber, A second disconnector chamber, which is located outside of the disconnection chamber along the longitudinal direction thereof and accommodates a second disconnector connected to the other electrode of the circuit breaker, and is provided above the second disconnector chamber; A third bushing connected to the second disconnector and connected to a second outgoing line. And a connecting pipe extending in a direction crossing a longitudinal direction of the circuit breaker chamber is connected to an upper portion of the first disconnector chamber, and the second bushing is provided at a tip of the connecting pipe. Switchgear.