JPH09322337A - Gas insulated switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with the addition of apparatuses merely by widening the lateral width, as regards the installation of a device, at the time of addition of the apparatus not to be connected with a bus, by accommodating individual units separately in square-shaped containers of the same height and depth dimensions, and coupling them with one another, and installing the container of the unit not to be coupled with a bus, next to the container of the unit to be coupled with this. SOLUTION: Each power receiving unit 51 and 52, a transformer unit 6, and a transformer unit 3 for transaction are accommodated in each square- shaped container of the same height and depth dimensions, and are coupled with one another by connecting the bus arranged on each container to them. On the other hand, a unit consisting of an apparatus not to be connected with bus, here a potential transformer unit 53 and a potential transformer unit 54 on bus side are accommodated each in containers of the same height and depth dimensions, and they are installed next to each container of units to connect these, that is, each power receiving unit 51 and 52. Hereby, also in the case of adding an apparatus not to be connected with a bus, for the installation space of a device, it can cope with this merely by widening the lateral width.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a gas-insulated switchgear in which a switchgear is housed in a rectangular container.

[0002]

2. Description of the Related Art A gas-insulated switchgear to which the present invention is applied is intended for power receiving and transforming facilities of general consumers, and a general circuit configuration is shown in FIG.
With this configuration, power receiving units 1, 2 and 2 that receive power by two lines
It is composed of transformer units 5 and 6 which are supplied to the transformer of the system, a transformer unit 3 for transaction for measuring the amount of electric power transaction, and a transformer unit 4 for instrument for detecting the bus voltage. Further, there is a configuration shown in FIG. 6 as a configuration for measuring the received voltage. The configuration of FIG. 6 is a configuration of the power receiving units 7 and 8 in which a voltage transformer is added to the power receiving unit of FIG. 5, and the configuration of the other units is the same as the configuration of FIG.

FIG. 7 is a side sectional view showing an example in which the power receiving unit 1 of FIG. 5 is housed in a rectangular container. Figure 7
, 11 is a power receiving cable head, 12 is a lightning arrester,
Reference numeral 13 is a line side disconnector, 14 is a ground switch, 15 is a circuit breaker, 16 is a connecting conductor, 17 is a busbar side disconnector, 18 is a power receiving side busbar, and 19 is a load side busbar. Reference numeral 20 denotes a device storage container, in which each device is housed in each part of the power receiving cable head part 20a, the line side disconnecting switch part 20b, and the breaker part 20c, and each part is gas tightly coupled. Reference numeral 21 is a container accommodating the bus bar 18 arranged between the units. Reference numeral 50 is a protective enclosure that surrounds the outer circumference of the container of each unit.

In this structure, the container is divided into accommodation parts for each device, and each device is assembled and accommodated for each division, and then assembled at predetermined positions by joining. It is manufactured according to the equipment to be housed, and the subassemblies of the respective parts are assembled in parallel at locations suitable for the respective parts and finally assembled and finished.

FIG. 8 shows a side sectional view of an example of the circuit of FIG. 6 in which a transformer 24 for measuring the voltage on the line side is added to the configuration of FIG. 7 and housed in a rectangular container. In this configuration, an instrument transformer 24 is housed between the power receiving cable head 11, the line-side disconnector 13 and the circuit breaker 15, and the container 25 is an instrument transformer more than the container 20a in the case of FIG. It is increased by the increase B in the depth dimension of the space accommodating 24.

The square shown by the dotted line in FIG. 6 is an image of the relative size of the container of each unit. When a transformer for measuring the voltage on the line side is added, the power receiving units 7 and 8 are It shows that the depth increases. If the depth dimension is partially increased in this way, it is necessary to secure a space that matches the depth dimension of the power receiving unit over the entire width, and the installation space becomes large.

[0007]

As described above, in the case where a transformer for an instrument is added in the system in which the containers corresponding to the storage capacities of the respective devices to be stored in the related art are joined after partial assembly, the unit for storing the parts is attached. Since the container has a long depth with a storage space secured, there is a problem in that it is necessary to secure an installation space having a depth dimension corresponding to the dimension as a whole, and a large installation space is required for the entire apparatus. In addition, a unit with a large depth of the power receiving unit will be transported separately, which will limit the transport of multiple units at once, which will increase transport costs and local assembly costs, and will also lengthen the local installation time. There is also a problem that the cost of the equipment becomes high.

The present invention has been made in order to solve the above-mentioned problems, and has a configuration in which the width and depth dimensions of the container of each unit are matched even if the transformer for the line side instrument is required. The purpose is to obtain a gas-insulated switchgear that does not increase the depth of the entire installation space.

[0009]

In a gas insulated switchgear according to claim 1 of the present invention, each unit such as a power receiving unit, a transformer unit, a transaction transformer unit, and an instrument transformer unit is a unit. Stored in a container with the same height and depth dimensions and connected, place a bus bar housed in the container over the entire width of the container at the top of the connected container, and connect each unit to the bus bar. , The container for equipment not connected to the bus bar is adjacent to the unit to be connected, and the height and depth of each unit are the same, and the unit is installed adjacent to the unit to be connected. The connection conductor is branched and connected from the unit.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. FIG. 1 is a single-line connection diagram of a gas-insulated switchgear to which the present invention is applied, and each unit is surrounded by a dotted line. In the figure, reference numerals 3, 5 and 6 denote a transformer unit for transformer and a transformer unit, which are the same as those shown in FIGS. Reference numerals 51 and 52 denote power receiving units, and conductors connected to devices that are not connected to the busbar are led out to adjacent containers. 53 is a transformer unit for meters which is connected to the power transmission line side of one of the power receiving units and accommodates a transformer for meters for detecting the line side voltage, and 54 is for a meter which is connected to the power transmission line of the other power receiving unit. This is an instrument transformer unit that houses a transformer and an instrument transformer for a bus.

FIG. 2 shows the arrangement of the power receiving unit 51 shown in FIG. 1, FIG. 3 shows the instrument transformer unit 53 shown in FIG. 1, and FIG. 4 shows the instrument transformer unit 54 shown in FIG. FIG.

In FIG. 2, 11 is a power receiving cable head, 12 is a lightning arrester, 13 is a line side disconnector, 14 is a ground switch, 15 is a circuit breaker, 16 is a connecting conductor, 17 is a busbar side disconnector, and 18 is a line. A side busbar, 19 is a load side busbar, and 20 is a container. Each device of the power receiving cable head portion 20a, the disconnecting switch portion 20b, and the circuit breaker portion 20c is accommodated in a gastight manner. Reference numeral 21 is a container for accommodating the track-side bus bar 18, and 22 is a container for the load-side bus bar. Reference numeral 31 is a connection conductor branched from the terminal portion of the power receiving cable head 11 to an adjacent container and led out. In FIG. 3, 32 is a transformer for the track side instrument, and 35 is a container for housing the transformer for the track side instrument. In FIG. 4, 34 is a bus side instrument transformer, and 36 is a container for accommodating the bus side instrument transformer. The outer circumference of each container is surrounded by a protective enclosure 50.

1 to 4, each unit is stored in a container having the same height and depth as described above, and if there is an additional device, it is placed adjacent to the unit to be connected. Install another container with the same height and depth,
A branch conductor for connecting to the device is led out into another container, and an additional device is arranged in the other container.

With this configuration, the conventional structure shown in FIGS.
Even if the depth is partially increased as described above, it is not necessary to widen the depth over the entire width, and the installation space as the device can be installed by slightly widening the width. Further, since the container is divided for each device, and the device arrangement of the container is configured to be partially assembled and connected for each division, it can be configured without increasing the types of containers, etc. Productivity will not be alienated even when adding an instrument transformer for detection. Also,
The height and depth of the container of each unit are the same, and since the depth of only the power receiving unit is not long, it can be transported while connecting for a certain length, and the number of divisions for transportation is reduced, avoiding an increase in transportation cost. There is also a merit that can be done.

[0015]

The gas-insulated switchgear according to the first aspect of the present invention has an additional device which is housed and connected in a container having the same height and depth for each unit and is not connected to the busbar. At this time, since the container to be housed has the same height and depth as the container of each unit, the container is installed adjacent to the unit to be connected, and the connection conductor is introduced from the unit to be connected, so that the conventional Even if the depth is partially increased like this, it is not necessary to extend the depth over the entire width, and the installation space as a device can be installed by just expanding the width a little. It is possible to divide the container into two parts, and to make a partial assembly for each division and to connect them, without changing the arrangement of the equipment and without increasing the types of members such as containers. Also, it is not necessary to productivity is alienated. In addition, the height and depth of the container of each unit are the same size, it is possible to transport with a certain length connected, and the number of divisions for transportation can be reduced, which also has the advantage of avoiding an increase in transportation cost. .

[Brief description of drawings]

FIG. 1 is a connection diagram showing a configuration of a power receiving substation for general consumers of the present invention.

2 is a cross-sectional view showing a configuration of an actual device of the power receiving unit of FIG.

FIG. 3 is a cross-sectional view showing an arrangement of a transformer for a measuring instrument on the line side configured according to the present invention.

FIG. 4 is a cross-sectional view showing the arrangement of the transformers for measuring instruments on the line side and the bus side constructed according to the present invention.

FIG. 5 is a connection diagram showing a configuration of a conventional power receiving substation for general consumers.

FIG. 6 is a wiring diagram in which a transformer for a measuring instrument on the line side is added to the configuration of FIG.

FIG. 7 is a cross-sectional view showing a configuration of an actual device of the power receiving unit of FIG.

FIG. 8 is a cross-sectional view showing a configuration of a device having a configuration in which a transformer for a meter on the line side is added to the power receiving unit of the power receiving unit of FIG.

[Explanation of symbols]

3 transformer units for trading, 5 transformer units, 6
Transformer unit, 11 power receiving cable head, 12 lightning arrester, 13 line side disconnector, 14 ground switch, 15
Circuit breaker, 16 connecting conductor, 17 bus-side disconnector, 18
Line side bus bar, 19 load side bus bar, 20 container, 21 line side bus bar container, 22 load side bus bar container, 31 branch conductor, 32 line side instrument transformer, 34 bus side instrument transformer, 35 bus line instrument transformer Vessel container, 36 bus side instrument transformer, 50 protective enclosure, 51 power receiving unit, 5
2 Power receiving unit, 53 Line side instrument transformer unit, 54 Bus side instrument transformer unit.

Claims (1)

[Claims] 1. A power receiving unit, a transformer unit, a trading instrument transformer unit, and an instrument transformer unit, each unit being housed in a container formed to have the same height and depth dimension. A gas-insulated switchgear in which a busbar housed in a container is arranged over the entire width of the connected and connected containers, and each unit described above is a gas-insulated switchgear that accommodates equipment that is not connected to the busbar. The container to be installed is adjacent to the container of the unit to be connected with the same height and depth as the other container, and the branch connection conductor is introduced from the unit to be connected into this container and connected. Characteristic gas-insulated switchgear.