JPS61273108A - Gas insulated switchgear - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a gas-insulated switchgear, and particularly to the arrangement of a container in which equipment and the like constituting the switchgear are housed.

[Background of the invention]

Generally, in electrical systems at substations, etc., a multi-bus system with dual bus bars as shown in Figure 2 is often used to facilitate maintenance and inspection, and to shorten power outage time in the event of an accident.

As a switchgear having such a circuit configuration to which a gas insulation method is applied, the configuration shown in FIG. 3 is conventionally known. That is, the bus line 1a.

1b are housed in bus bar containers 11a and 11bvc, respectively, and disconnectors 2a and 2b are housed in containers 12a, respectively.

12b, and the containers 12a and 12b are respectively connected to the corresponding busbar containers 11a and llb via partition plates. Further, the containers 12a and 12b are communicated with each other, and the container 12a is connected to the circuit breaker container 13 in which the circuit breaker 5 is housed via a partition plate.

Further, the container 12b houses a disconnector, a common electric line 3 connected to the disconnectors 2a and 2b, and a grounding switch 4 that grounds the common electric line 3. One end of the common electric line 3 is connected to one end of the breaker 5. On the upper side wall of the circuit breaker container 13, there is a container 1 in which a secondary disconnector 6 and a grounding switch 7 are housed.
5 and a container 16 in which the load drawer connection part 8 is housed are coupled in series.

As described above, the arrangement of the containers between one end of the circuit breaker 5 and the bus bars 1a, 1bK is complicated and large. This means that if one bus a1a or a1b becomes unusable due to an accident, the other bus a1b or a1b becomes unusable.
aVc is switched so that power can be received, and even if the busbar container 11a or 11b is removed, the other busbar container 11b or 11aVc
In order to avoid any hindrance, first remove the containers 12a and 1.
It is connected to the circuit breaker container 13 via 2b.

For example, in order to simply reduce the number of containers and simplify the configuration, if the busbar container 11a is directly connected to the circuit breaker container 13, and the busbar container 11bFi is connected to the circuit breaker container 13 via the busbar container 11a. Although there is no problem with the circuit configuration, there is a drawback that the bus bar container 11a cannot be removed during maintenance and inspection in the event of a failure, and the effect of duplication is lost.

[Purpose of the invention]

An object of the present invention is to simplify and downsize the configuration of a gas insulated switchgear connected to multiple busbars.

[Summary of the invention]

The present invention provides independent busbar containers for storing each busbar, stores a disconnector connected to the bus in each busbar, and has one end connected to one end of the circuit breaker in the circuit breaker container. , and is provided so as to extend in the longitudinal direction of the circuit breaker container, that is, in the direction in which the other end of the circuit breaker is disposed, and to fold back a common circuit to which the circuit breaker is connected, and the direction in which this common circuit extends This is intended to simplify and downsize the configuration by arranging the busbar containers in sequence and connecting them directly to the circuit breaker container.

[Embodiments of the invention]

Hereinafter, the present invention will be explained based on examples.

FIG. 1 shows a configuration diagram of an embodiment to which the present invention is applied.

Note that this embodiment has the circuit configuration shown in FIG. The busbar containers 218 and 21bvc house busbars 1a and lb and disconnectors 2a and 2b, respectively. Circuit breaker container 22
The bus bar containers 21A and 21b are arranged vertically in two stages and are directly connected to the side wall of the circuit breaker container 22 via a partition plate. The common electrical circuit 3 connecting one end of the circuit breaker 5 and the other ends of the circuit breakers 2a and 2b extends in the longitudinal direction of the circuit breaker case 22, that is, the circuit breaker 5
The disconnectors 2a and 2bvc are bent or bent at corresponding positions and connected to the respective disconnectors.

According to this embodiment, the container 12a in FIG.

Even if 12b is deleted, the independence of busbar containers 21a and 21b is ensured, and the number of containers can be reduced without impairing the effect of the double busbar. This simplifies the device configuration and downsizes the device, reducing the installation area and reducing manufacturing and assembly man-hours. In addition, 9 is a current transformer.

〔Effect of the invention〕

According to the present invention, the device configuration can be simplified and downsized.

[Brief explanation of the drawing]

FIG. 1 is a device configuration diagram of an embodiment of the present invention, FIG. 2 is a circuit configuration diagram showing an example of a switchgear to which the present invention can be applied, and FIG.
The figure is a diagram showing the configuration of a conventional device. la, lb... Bus bar, 2a, 2b... Disconnector, 3.
...Common circuit, 5...Breaker, 21a, 21b...
Bus bar container, 22... circuit breaker container.

Claims (1)

[Claims] 1. A plurality of busbars, a plurality of disconnectors each having one end connected to each of the busbars and the other end commonly connected, and a circuit breaker connected to the other end of the disconnector. In a gas insulated switchgear housed in a container filled with insulating gas, the container is provided for each of the busbars, and a plurality of busbar containers that house the disconnectors connected to the busbars;
and a circuit breaker container housing the circuit breaker, and
Each of the busbar containers is directly coupled to the circuit breaker container, and has one end connected to one end of the circuit breaker within the circuit breaker container, and extends in the longitudinal direction of the circuit breaker container. A gas insulated switchgear, characterized in that a common electrical circuit to which the other end is connected is provided in parallel with the circuit breaker, and the connecting portions of the busbar container are arranged in the extending direction of the common electrical circuit.