JPH01248507A - Gas insulation electrical equipment - Google Patents

Abstract

PURPOSE:To reduce installation area by setting the gas insulation reactor tank to be in vertically round shape, by making the installation to be in triangular layout, and by pulling connection duct to a switching device from each single- phase equipment. CONSTITUTION:With the entire configuration of all-gas insulation substation, a high-pressure gas insulation switching device 3 and a low-pressure gas insulation switching device 4 are laid at one side of building, a single-phase gas insulation main transformer 1 is laid at the opposite side, and a gas insulation reactor 2 with a vertically round tank is laid next to it. Then, each switcher is connected to each transformer 1 and a reactor 2 through a gas insulation bus 6. The gas insulation reactor 2 is installed in 2-phase horizontal layout due to the vertically round tank characteristics and the remaining one phase is laid at a space 8 produced by the curvature of two tanks. A connecting duct 5 with the switcher is pulled form each single-phase tank and is connected to a gas bus 6. This kind of configuration allows the length of gas bus to be reduced and construction cost to be reduced.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a gas-insulated gas-insulated device that is divided into single-phase devices and assembled into a three-phase device on site. It relates to electrical equipment, and in particular to reactors that can be transported in parts.

(Conventional technology) Due to the recent increase in power demand, transformers and reactors installed in power generation and substations have been replaced with single-phase transformers by combining multiple unit transformers due to various transportation restrictions and increased transformer capacity. constitutes,
Furthermore, a three-phase converter, which is a three-sum combination, has also been adopted.

FIG. 3 shows an installation example of such a separate transport type transformer and reactor. In FIG. 3, main transformer 1. The reactors 7 are each divided single-phase reactors, and are arranged in a horizontal row. In addition, a high-voltage gas-insulated switchgear 3 and a low-voltage gas-insulated switchgear 4 are arranged on the symmetrical side, and each transformer 1° reactor 7 is gas-insulated for the sake of compacting the installation space and aesthetically pleasing appearance. The method is to connect using a bus bar 6.

(Problem to be solved by the invention) However, when it comes to transformers and reactors that are transported in parts,
Each single-phase unit has an independent tank shape and reinforcement structure, so when multiple units are installed side by side and assembled together, extra space is created due to the reinforcement between each tank, and the total installation area is In addition, if there is a strong demand for downsizing of the building, such as installation in an underground substation, a large amount of cost will be spent on building construction, which is undesirable.

It is an object of the present invention to provide gas-insulated electrical equipment that eliminates the above-mentioned drawbacks, reduces the installation area, and improves the layout of power generation and substations.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, in the present invention, two phases of single-phase gas insulated reactors of vertical round tanks are arranged side by side, and a curvature space of the round tank is created between them. Place the third phase in . Another feature is that the ducts connected to the gas insulated busbars are drawn out from each single-phase tank to compress the reactor installation space.

(Function) By making the tank vertically round, the installation area is reduced,
We aim to construct economical power generation and substations.

(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2. For example, the overall configuration of an all-gas insulated substation is such that high-voltage gas-insulated switchgear 3 and low-voltage gas-insulated switchgear 4 are placed on one side of the building, and a single-phase gas-insulated main transformer 1 is placed on the symmetrical side. A gas insulated reactor 2 having a vertical round tank is arranged horizontally. Each of the switches and each of the transformers 1. The reactor 2 is connected via a gas insulated bus 6.

The gas insulated reactor 2 is installed in two phases side by side due to the characteristics of vertical round tanks, and the remaining one phase is placed in the space 8 created by the curvature of the two tanks. The connection duct 5 with the switch is drawn out from each single-phase tank and connected to the gas bus 6.

With this configuration, the space for installing the reactor was compressed, and the dimension between the ducts was shortened, so the length of the gas bus bar was reduced, and overall construction costs were reduced.

〔Effect of the invention〕

As described above, according to the present invention, three single-phase transformers including a gas insulated transformer and a gas insulated reactor are arranged side by side,
In a gas-insulated electric device that constitutes a three-phase transformer and connects the gas-insulated transformer, gas-insulated reactor, and gas-insulated switchgear, the tank of the gas-insulated reactor is vertically round and its installation is arranged in a triangle; Since the connection ducts to the device are each drawn out from the single-phase equipment, it is possible to obtain a gas-insulated electric device in which the reactor installation space is compressed and the length of the connecting gas bus bar is reduced.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a gas reactor installation structure for gas insulated equipment according to the present invention, Fig. 2 is a plan view showing another embodiment according to the present invention, and Fig. 3 is a plan view showing a conventional reactor installation structure. FIG. 1... Gas insulated transformer 2... Gas insulated reactor 3... High pressure gas insulated switchgear 4... Low pressure gas insulated switchgear 5... Connection duct 6.
...Gas insulated bus bar 7...Reactor 8
...Spatial Space Agent Patent Attorney Nori Ken Yudo Chika Ken Daishimaru Figure 1 Otsu 5

Claims (1)

[Claims] 3 single phase transformers with gas insulated transformers and gas insulated reactors
In a gas insulated electric device in which the gas insulated transformer, the reactor, and the gas insulated switchgear are connected together to form a three-phase transformer, the tank of the gas insulated reactor is vertically round and its installation is in a triangular arrangement, and Gas-insulated electrical equipment characterized by a connection duct with a switchgear drawn out from each single-phase unit.