KR200271011Y1 - structure for one body type each unit of gas insulated switchgear - Google Patents

Abstract

The present invention relates to a gas insulated switchgear, and more specifically, a PT bus unit, which is a constituent unit of a gas insulated switchgear, and a straight ES unit are combined in one-piece to reduce the occupied area when installing the device and to facilitate management. An integrated structure of each unit of a gas insulated switchgear.

The present invention for this purpose is to install a PT bus unit (2) and a straight ES unit (3), which was previously a separate component in one tank (14), the upper part of the tank 14, the two units are combined The PT unit (4) is installed to achieve a concise structure.

Description

Structure for one body type each unit of gas insulated switchgear}

The present invention relates to a gas insulated switchgear, and more specifically, a PT bus unit, which is a constituent unit of a gas insulated switchgear, and a straight ES unit are combined in one-piece to reduce the occupied area when installing the device and to facilitate management. An integrated structure of each unit of a gas insulated switchgear.

In general, a gas insulated switchgear (GIS) reduces a conventional substation into a single device to perform the function of the substation, thereby reducing the footprint of the device during installation.

In other words, the gas insulated switchgear uses the SF ₆ gas having excellent insulation performance and arc extinguishing function (function to suppress the occurrence of arc) in a sealed container of a metal material as an insulating medium to accommodate the conductors and various protective devices. As a water substation facility with improved design, the whole system is constructed by uniting and combining various devices and connecting pipes.

Such a gas insulated switchgear is connected to a transformer scope 1 as shown in FIG. 1, and the current transmitted from the gas insulated switchgear is rated at a voltage suitable for a load by the transformer scope 1. It is transformed and sent to the current source.

On the other hand, the gas insulated switchgear is largely composed of a PT bus unit 2, a straight ES unit 3, and a PT unit 4, each of which is a separate unit having various components in each tank. After fabrication, each unit is electrically connected by a conductor (PT: potential transfermer, ES: earthing switch).

FIG. 2 shows such a conventional gas insulated switchgear. In the PT bus unit 2, a plurality of conductors 6 are fixed by a spacer 7 in a cylindrical tank 5 constituting an outer shape. It is installed.

In addition, the straight ES unit 3 is provided with an ES assembly 9 in the tank 8, and the plurality of conductors 10 are evacuated in an appropriate shape so as not to interfere with the ES assembly 9. Is fixed by the spacer 11.

The PT unit 4 also has a form substantially similar to the unit in which the conductor 13 is connected to the tank 12 by a spacer (not shown).

In this way, each unit forms a flange on one side thereof and is mutually combined by fastening means such as bolts, and each unit is connected to each other by connecting the conductors 6, 10, 13 embedded therein by connecting ports. The connected state is maintained.

In the above, the PT bus unit (2) serves as a connection tube so that the straight ES unit (3) and the PT unit (4) can be energized by conducting a conductor, and the straight ES unit (3) generates abnormal voltages and accidents. It serves to ground the main circuit by the ES assembly 9 for safety during inspection.

The PT unit 4 is used for preventing accident voltages, checking bus voltages, and power supply voltages for electricity meters.

However, the conventional gas insulated switchgear as described above is configured to separate the PT bus unit 2 and the straight ES unit 3 into separate units, and are mutually coupled to each other. In the maintenance and inspection of the equipment, the two units had to be inspected separately, so the management of the equipment occurred a lot, and the production cost of the equipment had various problems.

The present invention has been made to solve the conventional problems as described above, the purpose is to unite the unit constituting the gas insulated switchgear.

The present invention for achieving the above object is a PT bus unit that acts as a connection tube so that the electricity is connected by connecting the straight ES unit and the PT unit with a conductor, and the ES assembly for safety in case of abnormal voltage occurrence and accidents and other maintenance In the gas insulated switchgear equipped with a linear ES unit which serves to ground the main circuit, and a PT unit used for preventing accident voltages, checking bus voltages, and power supply of a wattmeter.

The PT bus unit and the straight ES unit are installed in one tank, and a PT unit is installed on an upper portion of the tank in which the two units are combined.

1 is a layout (lay-out) configuration of the gas insulated switchgear

2 is a main configuration diagram of a conventional gas insulated switchgear

3 is a main configuration diagram of the gas insulated switchgear of the present invention

4 is a layout diagram of a gas insulated switchgear of the present invention

Explanation of symbols for main parts of the drawings

3: straight ES unit 4: PT unit

14 tank 15 spacer

16: conductor

FIG. 3 is a diagram showing the main parts of the gas insulated switchgear of the present invention, and FIG. 4 is a layout diagram of the gas insulated switchgear of the present invention, with reference to the accompanying drawings. The explanation is as follows.

In the present invention, the PT bus unit 2 and the straight ES unit 3, which were previously separate parts as shown in FIG. 3, are installed in one tank 14, and the two units are combined with the tank 14 PT unit (4) is installed on the upper part to achieve a concise structure.

In order to integrate the PT busbar unit 2 and the straight ES unit 3, a plurality of conductors 16 are provided in a single tank 14 in a horizontal state by spacers 15, and the conductor 16 In the lower part of the structure, the PT bus unit 2 and the linear ES unit 3 are integrated as the ES assembly 9, which is previously installed in the linear ES unit 3, is connected to the conductor 16. .

As such, by installing the PT busbar unit 2 and the straight ES unit 3 in the single tank 14, the assembly process is possible without the installation of additional equipment, thereby greatly reducing the production terminal.

In addition, since the volume can be reduced by the volume in which the conventional straight ES unit 3 is installed, as shown in the layout configuration of FIG. 4, the installation space occupancy of the device can be reduced.

That is, the layout configuration can be simplified.

According to the present invention, the PT bus unit and the straight ES unit can be installed in a single tank to integrate the device, and the volume of the device can be greatly reduced. have.

Claims (1)

PT bus unit that acts as a conduit to connect the straight ES unit and PT unit with electricity, and the ES that grounds the main circuit by the ES assembly for safety during abnormal voltage occurrence and accidents In the gas insulated switchgear equipped with a linear ES unit having an assembly, and a PT unit used for preventing accident voltages, checking bus voltages, and power supply voltage of an electricity meter, The PT busbar unit and the straight ES unit are installed in one tank, and a plurality of conductors connected in the one tank are horizontally installed by a spacer, and an ES assembly is installed below the conductor to connect the conductors. Each unit integrated structure of the gas insulated switchgear, characterized in that the PT unit is installed on the upper portion of the tank in which the two units are combined.