JP2542761B2 - Gas insulated 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 gas-insulated switchgear capable of reducing the installation space.

[0002]

2. Description of the Related Art As a conventional gas-insulated switchgear, for example, one in which constituent devices such as a disconnector and a circuit breaker are arranged as shown in FIGS. 1 in each figure
1 power receiving breakers, 12 transformer breaker, 13 disconnector, 14 trading transformer interposed between the power receiving circuit breaker 11 and the transformer breaker 12, this transaction for transformer The device 14 is connected to the busbars 16 and 17 via the disconnecting switches 15 and 15. The power receiving breaker 11 is connected to the power receiving cable connecting apparatus 18 via the disconnectors 13, shielding transformer <br/> cross 12 is connected to the transformer 20 through the transformer connection device 19 There is. Further, 21 is a transaction transformer bypass breaker interposed between the other power receiving breaker 11 and the transformer breaker 12.

Thus, in the connection structure of the above gas insulated switchgear, the power receiving cable connecting device 18 is the disconnector 13, the power receiving circuit breaker 11, the disconnector 13, the switchgear 15 and the busbar 16.
The is via sequentially connected to the transaction transformer 14, further, the transaction transformer 14 is opened and closed for disconnecting switch 15, bus 17, disconnector 13 and through the transformer breaker 12 transformer connection device The transaction transformer bypass disconnector 21 is connected to the transaction transformer 19 and has a structure conforming to the connection structure of the corresponding transaction transformer 14 side. FIG. 8 shows the electrical configuration of this connection structure.

[0004]

However, in the conventional gas-insulated switchgear, the two-row connection structure in which the busbars 16 and 17 are sandwiched between the power receiving circuit breakers 11 and the transformer circuit breakers 12 is provided. That is, a plurality of power receiving circuit breakers 11 are arranged in a line outside the bus bar 16, a plurality of transformer circuit breakers 12 are arranged in a line outside the bus bar 17, and the respective rows are opposed to each other. because of the positional relationship, the installation space of the gas insulated switchgear is increased, these points had become <br/> challenge on space.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a gas-insulated switchgear which saves the installation space.

[0006]

A gas-insulated switchgear of the present invention comprises a plurality of types of gas-insulated switchgear equipped with components such as a circuit breaker and a disconnector installed in a substation with a single busbar. The circuit breakers are arranged in a line, and bus bars are arranged on the front and rear surfaces of each circuit breaker.

[0007]

According to the present invention, a plurality of types of circuit breakers constituting the gas insulated switchgear are arranged in a line, and busbars are arranged in front of and behind these circuit breakers. Can be reduced to save space.

[0008]

EXAMPLES Hereinafter, the present invention will be denoted by the same reference numerals in the conventional same or corresponding parts with reference to the embodiments shown in FIGS. In each drawing, FIG. 1 is a plan view showing an embodiment of the gas insulated switchgear of the present invention, FIG. 2 is a side view showing a power receiving unit of the gas insulated switchgear shown in FIG. 1, and FIG. FIG. 4 is a side view showing a transformer unit of the gas insulated switchgear shown in FIG. 4, and FIG. 4 is a single line connection diagram showing an electrical configuration of the gas insulated switchgear shown in FIG.

As shown in FIGS. 1 to 3, the gas-insulated switchgear according to the present embodiment has a plurality of circuit breakers, that is, power receiving circuit breakers 1.
1 transformer breaker 12 and are arranged in a row, each breaker 1
The busbars 16 and 17 are arranged on the front and rear surfaces of 1 and 12, respectively. That is, as shown in FIG. 1, the power receiving cable connecting device 18 in the present embodiment is arranged on the same side as the transformer 20, and the power receiving breaker 11 is connected to the power receiving cable connecting device 18 via the disconnector 13. Connected. Further, the power receiving circuit breaker 11 is provided with a shift circuit breaker 12 and a transaction transformer 14 which are sequentially adjacent to each other in a line, and bus bars 16 and 17 are arranged in front of and behind them. Also, transaction transformer connected to the bypass disconnector 21 side a powered breaker 11 and a transformer breaker 12
Also the circuit breakers 11 and 12 connected to the transaction transformer 14 side
The circuit breakers 11 and 12 and the circuit-breaking transformers 14 and the circuit breakers 11 and 12 on the side are arranged in a line. Other connection structures are configured according to the conventional one.

[0010] Then, the power receiving unit and the bus bars 16 and 17 having a power receiving circuit breaker 11 is variable is in the relationship shown in FIG. 2
A transformer unit with a voltage breaker 12 and a busbar 16,
17 has the relationship shown in FIG.

Thus, in the connection structure of the gas-insulated switchgear of this embodiment, the power receiving cable connecting device 18 is arranged on the rear surface of the disconnector 13, the power receiving breaker 11, the disconnector 13, and the respective breakers 11, 12. Is connected to the transaction transformer 14 via the busbar 16 and the switching disconnector 15 which are connected to each other, and the transaction transformer 14 is arranged in front of the switching disconnector 15 and each of the circuit breakers 11 and 12. busbar 17 is connected to the transformer connection device 19 via a disconnector 13 and a transformer circuit breaker 12, also traded transformer bypass breaker 21 side corresponding to the transaction transformer 14 side The structure conforms to the connection structure. FIG. 4 shows the electrical configuration of this connection structure.

According to this embodiment as described above, arranged in the power receiving breaker 11 having different types and transformer breaker 12 is a row, each front and rear surfaces of the circuit breaker 11, 12 Since the busbars 16 and 17 are arranged in the, the space saving can be realized without impairing the opening / closing function in the conventional connection structure in which the circuit breakers 11 and 12 of different types are arranged in two rows. An example of a gas-insulated switchgear that saves space is disclosed in Japanese Patent Laid-Open No. 59-41.
No. 105, or Japanese Utility Model Laid-Open No. 58-92
Although there is one disclosed in Japanese Patent No. 814, the gas-insulated switchgear disclosed in these publications is the one in which circuit breakers of the same type are arranged in a line.

In the above embodiment, each of the circuit breakers 11 and 12 is
It goes without saying that the positional relationship between the busbars 16 and 17 arranged on the front and rear surfaces may be reversed.

[0014]

As described above, according to the present invention, it is possible to provide a gas-insulated switchgear which saves the installation space.

[Brief description of drawings]

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

FIG. 2 is a side view showing a power receiving unit of the gas insulated switchgear shown in FIG.

FIG. 3 is a side view showing a transformer unit of the gas insulated switchgear shown in FIG. 1.

FIG. 4 is a single wire connection diagram showing the electrical configuration of the gas insulated switchgear shown in FIG.

FIG. 5 is a plan view showing a conventional gas-insulated switchgear.

6 is a side view showing a power receiving unit of the gas insulated switchgear shown in FIG.

FIG. 7 is a side view showing a transformer unit of the gas insulated switchgear shown in FIG.

8 is a single wire connection diagram showing the electrical configuration of the gas insulated switchgear shown in FIG.

[Explanation of symbols]

11 power receiving breaker 12 transformer breaker 13 disconnector 16 bus 17 bus

Claims (1)

(57) [Claims] 1. A gas-insulated switchgear installed in a substation with a single busbar, which comprises components such as a circuit breaker and a disconnector, and a plurality of types of circuit breakers are arranged in a line, and the front surface of each circuit breaker is arranged. And a gas-insulated switchgear characterized in that a bus bar is arranged on the rear surface.