JPH0691686B2 - Gas insulated switchgear - Google Patents

Description

The present invention relates to a gas-insulated switchgear (hereinafter referred to as GIS), and particularly to a configuration of a GIS suitable for power receiving equipment.

[Conventional technology]

A conventional GIS for power reception with a two-line pull-in, two-bank configuration is introduced on page 16 of "Electrical Railway" Vol.39, No.9, and is shown in Fig. 7.

In Fig. 7, power receiving side units A and E configured by arranging the equipment on the service line side for each line in one box-shaped container and the equipment on the connection side with the transformer in one box-shaped container. MOF unit C that is configured by housing the drawer side units B and D that are housed and the power consumption meter (hereinafter referred to as MOF) housed in one box-shaped container
This is a method that uses a row board configuration using and.

In the conventional GIS based on this circuit configuration, the power receiving side units A and E are arranged on the outermost side, the drawing side units B and D are arranged on the inner side, and the central MOF unit C is arranged.

[Problems to be solved by the invention]

However, in the conventional configuration, since the power receiving side units A and E are located on both sides of the whole, it is necessary to draw the bus bar that connects them and the bus bar that connects them and MOF1. The volume of the vessel was increasing.

An object of the present invention is to provide a GIS that has a small installation area and is easy to expand and respond to accidents.

[Means for solving problems]

According to the present invention, in the two-line lead-in two-bank configuration, the power receiving side unit is arranged on one side of the MOF unit, and the pull-out side units of the two banks are collectively configured on the other side. By using a plug-in type connection device for the electrical connection of the charged parts in each box-shaped container, the installation area is small and it is easy to add or to respond to an accident. GIS can be provided.

The MOF is housed in the MOF box in the air insulation system, and the electrical connection with each unit is facilitated by connecting the cable with a stop-on cable head.

[Action]

Generally, in this type of row board configuration, each unit is configured by housing each device in a box-shaped container having almost the same height and depth, but the power receiving side unit has a circuit breaker, while the unit is connected to a drawer. Side units do not have this. According to this structure, since the power receiving side units are adjacent to each other, the bus bar connecting the two units becomes simple, and therefore the structure inside the box-shaped container of the drawing side unit is simplified, and there are two drawing side units. The unit can be stored, and the installation area required for the drawer side unit can be halved from the conventional one.

Also, since a plug-in type connection device is used for electrical connection between each unit, it is easy to connect each box-shaped container unit.
Since they can be separated, they have the effects of shortening installation time, facilitating expansion, and facilitating replacement of the accident unit in the event of an accident.

Since MOFs are connected by a slip-on cable, there is an effect that conversion of MOF units becomes easy.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of the GIS, and FIG. 2 is a single line connection diagram corresponding to FIG.

In both figures, the unit A on the power receiving side is composed of a bushing 10 and a circuit breaker 2 having disconnectors 3 and 7 connected on both sides, and its transformer side end is connected to one end of MOF1. The power-reception-side unit E is guided to the bushing 10 by a cable via the cable head 4, and the other configuration is the same as that of the power-reception-side unit A.

At the other end of MOF1, a pull-out unit B connected to two transformers,
There is a D, each with a disconnector 5 and a cable head 6. In particular, as can be seen from FIG. 1, MOF unit C
Power receiving side units A and E are placed together on one side of the
Place the drawer side units B and D on the other side of the unit C, and
The drawer side units B and D are configured in two stages in the upper and lower directions, and the upper side is the drawer side unit B.

Also, the electrical connection between each structural unit is a plug-in connection device.
Since it is performed by 60, the connection between each unit becomes easy. Also, the MOF unit can be connected to M-type by connecting with stop-on cables 61,62 which is a type of plug-in type.
Only OF1 can be exchanged. By connecting a cable between 61a and 61b, it is possible to temporarily restore without MOF in case of MOF1 accident.

Therefore, as a whole, as shown in the front view of FIG.
Each unit A to E having four box-shaped containers constitutes a row board, and five box-shaped containers are arranged side by side in the conventional configuration, whereas an installation area where one of the box-shaped containers is omitted It is composed of.

Next, the configuration of each unit will be described.

FIG. 4 is a cross-sectional view of the power receiving side unit A along line IV-IV in FIG. The box-shaped container 40 is divided into a door 41 side and a back side by a partition wall 42, and a pair of bushings 43 are attached to the partition wall 42. The circuit breaker 2 is connected to the bushing 43. A bus bar 8 and a bushing 10 are connected to the opposite end of the bushing 43 via disconnecting switches 3 and 7, respectively. The bus bar 8 is a MOF 1 shown in FIGS. 1 and 2.
On the other hand, it is connected to the transmission line side via the bushing 10. FIG. 5 is a cross-sectional view of the power receiving side unit E along the line VV in FIG. The box-shaped container 40 is divided into a door 41 side and a back side by a partition wall 42, and a pair of bushings 43 are attached to the partition wall 42. The circuit breaker 2 is connected to the bushing 43. Further, the bus bar 8 and the cable head 4 are connected to the opposite ends of the bushings 43 via the disconnectors 3 and 7, respectively, and the bus bar 8 reaches the MOF 1 shown in FIG. 1 and FIG. The cable head 4 is connected to the power transmission line side via a cable 9 and a bushing 10 shown in FIG.

The space indicated by a dot in the figure is filled with SF ₆ gas.

FIG. 6 is a sectional view of the drawer side units B and D taken along line VI-VI in FIG. The box-shaped container 50 is composed of upper and lower two stages by the partition walls 51, 52, etc., and the disconnector 5a and the cable head 6a are arranged in the upper space to constitute the drawer side unit B. A disconnector 5b and a cable head 6b are arranged in the space to form a drawer side unit D. Both of these disconnectors 5a, 5b
Is connected by a bushing 54 attached to the partition wall 51,
After that, the busbar connected to MOF1 shown in Figs. 1 and 2
Connected to 53. Cables 55 and 56 are connected to the cable heads 6a and 6b, respectively, and reach a transformer or the like (not shown). Further, on the inner side of the partition wall 57, the cable 9 of FIG. 5 rises, and is connected to the power transmission line via the cable head 4 and the gas insulated conductor via the bushing 10.

In this way, by arranging the power receiving side units A and E together on one side of the MOF unit C, the bus bar for connection between both power receiving units or between the MOF unit and the power receiving unit becomes B, D
Since the inside of the box-shaped container 50 is not passed, the inside of the box-shaped container 50 forming the drawer side units B and D is simplified, and the two drawer side units B and D are divided into two as shown in FIG. It can be stored as a stacked structure.

Although the upper and lower spaces are defined by the partition walls 51 and 52 in the embodiment shown in FIG. 5, both spaces may be gas-communicated.

〔The invention's effect〕

According to the present invention, between the power receiving unit and the power receiving unit and the MOF.
By simplifying the bus bar that connects the units, reducing the installation area required for the unit on the extraction side, and connecting at least one of the units on the power receiving side via a cable, the efficiency of utilization of the substation site can be improved. In addition, since each unit can be easily connected, installation time, extension time can be shortened, and defective units can be easily converted.

[Brief description of drawings]

1 is a plan view of a gas-insulated switchgear according to an embodiment of the present invention, FIG. 2 is a single line connection diagram showing a circuit configuration corresponding to FIG. 1, FIG. 3 is a front view of FIG. 1, and FIG. FIGS. 5, 5 and 6 are sectional views taken along lines IV-IV, VV, and V1-V1 of FIG. 3, respectively, and FIG. 7 shows a conventional gas-insulated switchgear. It is a single line connection diagram shown. 1 ... MOF, 2 ... Breaker, 4,6 ... Cable head, 5a, 5b ...
Disconnector.

Claims (6)

[Claims] 1. A gas-insulated switchgear comprising a power receiving unit, a unit of power consumption measuring device, and a unit of drawer side, wherein one of the units of power consumption measuring device constitutes a unit on the power receiving side, A gas-insulated switchgear characterized in that the unit on the pull-out side is formed on the other side of the measuring instrument unit, and the units are connected by a plug-in type connecting device. 2. A gas-insulated switchgear according to claim 1, wherein the box-shaped container has two drawer-side units, and the units are arranged in a stack in a vertical stack. 3. The gas insulated switchgear according to claim 1, wherein the unit of measuring the amount of electric power used is electrically connected by a slip-on cable. 4. The power receiving side unit according to claim 1, wherein each of the power receiving side units includes a circuit breaker arranged in a vertical direction on a front side of the box-shaped container and an upper side of a back side of the box-shaped container. A circuit breaker arranged and connected to the busbar side of the circuit breaker;
A gas-insulated switchgear, comprising: a disconnector disposed above the inner side of the box-shaped container and connected to a power receiving side of the circuit breaker. 5. The claim 1 according to claim 1, wherein each of the drawer side units includes a disconnector horizontally arranged in the front-rear direction, and the front end of each disconnector is connected to a different cable head. A gas-insulated switchgear characterized in that the back end of each disconnector is connected together with a bus bar located above the back. 6. The box-shaped container according to claim 1, wherein the box-shaped container is divided into upper and lower spaces by partition walls, and the two drawer-side units are separately arranged in these divided spaces. A gas insulated switchgear characterized by the above.