JPH0734603B2 - Gas insulated switchgear - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a gas insulated switchgear of a 1-1 / 2 circuit breaker system used in power plants and substations.

[Prior Art] As a conventional gas-insulated switchgear of the 1-1 / 2 circuit breaker system shown by the skeleton in FIG. 10, it is disclosed in Japanese Utility Model Laid-Open No. 58-166212, and the present application There are some that will be applied earlier by people. FIG. 13 and FIG. 14 show one example of them, and according to this example, the circuit breakers (3), (4), (5) and the corresponding disconnecting switches (6) to (13) are arranged on the ground. And disconnecting the first and second main busbars (1) and (2) and the connecting busbars (16) and (17) connecting the circuit breakers by forming the disconnectors in the longitudinal direction of the circuit breaker. The external pull-out busbars (18) and (19), which are arranged at the same level on the upper side and are connected to the bushings (15) and (14), are configured to be connected from between the connecting busbars via a disconnector. .

Further, according to the conventional example shown in FIGS. 15 and 16, each of the disconnecting switches (6) to (1) is provided above the circuit breakers (3), (4) and (5).
1) is arranged, and the circuit breaker and the first and second main buses (1),
(2) A disconnecting switch and a circuit breaker arranged between them and a connecting bus bar (1
6) and (17) are arranged such that the longitudinal center line of the disconnector is perpendicular to the longitudinal center line of the circuit breaker, and the first and second main busbars (1), (2) is located above the connecting busbars (16) and (17), and the connecting busbars (16) and (17) are the first and second main busbars (1),
It is placed in a position sandwiched between (2). Further, the external lead-out busbars (18) and (19) are arranged at positions facing the connecting busbars via the disconnectors (12) and (13) located between the circuit breaker and the connecting busbars. .

[Problems to be Solved by the Invention] In the conventional gas-insulated switchgear described above, FIG.
As shown in the skeleton of Fig. 12, if two outer drawing busbars are to be arranged in the opposite direction to that of Fig. 10 or two external drawing busbars are arranged in the same direction as each other,
In the example shown in Fig. 14, the circuit breakers must be wide enough to accommodate a drawer busbar between them, or they must be drawn out in the opposite direction through the tops of the first and second main buses and the connecting busbar. I have to. Also, in the examples of FIGS. 15 and 16, the external drawing busbar must be configured to pass above the first and second main busbars, and the device configuration is complicated and the gas-insulated device is also provided. A larger site and height was needed to make up the.

The present invention has been made to solve the above problems, and an object thereof is to obtain an inexpensive gas-insulated switchgear that does not complicate the equipment and does not affect the site or height at all.

[Means for Solving the Problems] In the gas-insulated switchgear according to the present invention, the first and second main busbars and the connecting busbars parallel to the first and second main busbars are arranged such that their longitudinal center lines are orthogonal to the main busbars and the connecting busbars. Make up a circuit breaker,
The disconnector placed between the main busbar and connecting busbar and the circuit breaker is placed above the circuit breaker, and the longitudinal centerline of the disconnector placed between the main busbar and the circuit breaker is parallel to that of the circuit breaker. , The longitudinal center line of the disconnector arranged between the connecting busbar and the circuit breaker is perpendicular to that of the circuit breaker, and the connecting busbar is arranged above the first and second main busbars. The external lead-out busbars are arranged so as to pass above the first and second main busbars.

[Operation] In the present invention, the connecting busbars are arranged above the first and second main busbars, and the external drawing busbars are drawn out between the main busbars and the connecting busbars. Without this, the skeleton arrangement shown in FIGS. 11 and 12 can be obtained, and the skeleton that does not affect the site or height can be obtained.

[Embodiment] FIGS. 1 to 4 show an embodiment of the present invention based on the skeleton of FIG. 10, and in FIGS.
Main busbars (1) and (2) are arranged substantially parallel to each other, and the first and second main busbars (1) and (2) are orthogonal to the longitudinal centerlines of the first and second main busbars (1) and (2). A third circuit breaker (3),
(4) and (5) are arranged parallel to each other between the first and second main buses (1) and (2). In addition, the connection bus (1
6) and (17) are arranged parallel to each other inside the first and second main buses (1) and (2). As shown in FIGS. 2 to 4, the first, second and third circuit breakers (3), (4),
On the upper part of (5), disconnectors (6), (7), (8),
(9), (10), and (11) are arranged. The disconnectors (6) and (11) are respectively the first and second main busbars (1),
Located between (2) and the circuit breakers (3), (5), they are arranged such that the longitudinal centerline of the disconnector is parallel to the longitudinal centerline of the circuit breaker. Further, the disconnectors (7), (8), (9), (10) are connected to the connecting busbar (17),
Located between (16) and breakers (3), (4), (5),
They are arranged such that the longitudinal centerline of the disconnector is orthogonal to the longitudinal centerline of the circuit breaker. Therefore, first,
The second main buses (1) and (2) are connection buses (16) and (17)
The structure can be arranged at a lower position than that. Also, an external drawer bus bar (18) for connecting to an external circuit,
(19) is the disconnector (8), via the disconnector (12), (13)
It is connected with (10). At this time, disconnector (12),
(13) and externally drawn busbars (18) and (19) are arranged above the main busbars (1) and (2).

In the above embodiment, the disconnectors (12) and (13) are connected to the disconnectors (8) and (10), respectively.
The same configuration is obtained even when connected to (9).

When the skeleton of FIG. 10 is arranged and configured as shown in FIGS. 1 to 4 as described above, the skeletons of FIGS. 11 and 12 have the following device configurations. That is,
In the skeleton of Fig. 11, the external drawing busbars (18), (1
9) is arranged by pulling it out in the opposite direction to that in FIG. FIG. 5 is a plan view of the embodiment in this case.

Furthermore, in the skeleton in Fig. 12, the external drawing busbar (1
8) and (19) are drawn out in the same direction, and a plan view of the embodiment is FIG. 9.

If the equipment is arranged as described above and the skeleton of FIG. 11 is to be constructed, as can be seen from the side views of FIGS. 6 to 8, the external drawing busbars (18), (19) and the disconnection lines are formed. The containers (12) and (13) can be pulled out in the opposite directions by passing over the first and second main buses (1) and (2), respectively.

Furthermore, if the skeleton of FIG.
9 by combining the device arrangements of FIGS.
The configuration shown in the figure is possible.

In the above embodiment, the busbar portion is shown as a three-phase batch type, but it goes without saying that the same effect can be obtained even if this is configured with a single-phase busbar. A similar effect can be obtained with a three-phase all-in-one type.

[Effects of the Invention] As is clear from the above description, the present invention provides a disconnector,
The main bus bar, the connecting bus bar are arranged on the upper part of the circuit breaker, and the connecting bus bar is provided on the upper part of the main bus bar, and the longitudinal center line of the disconnector arranged between the main bus bar and the circuit breaker is parallel to that of the circuit breaker. In addition, by arranging the longitudinal center line of the disconnector arranged between the connecting busbar and the circuit breaker so as to be orthogonal to that of the circuit breaker, and by arranging the external drawer busbar so as to pass above the main busbar, However, there is an effect that an inexpensive thing that does not have any influence on the site and height can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, and FIGS. 2, 3, and 4 are plane views taken along lines II-II, III-III, and IV-IV of FIG. 1, respectively. A sectional view, FIG. 5 is a plan view of another embodiment, and FIGS. 6, 7, and 8 are planes taken along lines VI-VI, VII-VII, and VIII-VIII of FIG. 5, respectively. FIG. 9 is a plan view of another embodiment, FIG. 10 to FIG. 12 are wiring diagrams of a conventional gas insulated switchgear, and FIGS. 13 and 14 are conventional gas insulated switchgear. And FIG. 15 is a plan view of another conventional gas-insulated switchgear, and FIG. 16 is a sectional view taken along the line XVI-XVI in FIG. (1), (2) ... First and second main buses, (3),
(4), (5) ... First, second, and third circuit breakers, (6)
~ (13) ... disconnector, (16), (17) ... connection busbar,
(18), (19) …… Drawer busbar. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A double busbar is a 1-1 / 2 circuit breaker system, and a first and a second main busbars are arranged in parallel with each other at intervals.
A series connection body of three first, second, and third circuit breakers electrically connected in series by a connection bus bar between the main bus lines, and a series connection body of an associated disconnector is installed, and the circuit breaker and the circuit breaker are connected to each other. The disconnector installed between the connecting busbar and the circuit breaker is provided with an external circuit connecting portion with the drawer busbar that draws out from the circuit breaker to an external circuit, and the disconnector is arranged between the external circuit connecting portion and the drawer busbar. In the gas-insulated switchgear configured as described above, a connection portion for connecting to the disconnector is provided above the three circuit breakers, and connection between the first and second main busbars and the circuit breaker is
Through a disconnector arranged so that the longitudinal centerline of the disconnector is parallel to the centerline of the circuit breaker, and
The connection busbar and the circuit breaker are arranged so that the centerline in the longitudinal direction of the disconnector is connected via a disconnector arranged so as to be at right angles to the longitudinal centerline of the circuit breaker, The connecting busbar is located above the first and second main busbars, and the disconnector disposed between the external circuit connecting portion and the drawout busbar is located above the first and second main busbars. A gas-insulated switchgear characterized in that