JPS58190208A - Gas insulated bus connecting device - 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 [Technical Field of the Invention] The present invention relates to a device for connecting a connected part such as an external outlet of a gas insulated switchgear and a transformer via a gas insulated bus bar. The present invention relates to a lance insulating bus connection device with an improved support structure for the connection end on the vessel side.

[Technical background of the invention and its problems]

In substations installed around large cities or in coastal areas, gas insulation is used where electrical equipment is housed in individual containers filled with insulating gas for reasons such as land availability and the need for salt-damaged sealing wax. It is desirable to construct 11 reduced-sized (four-conductor) substations with switchgear.

By the way, in this type of connected substation, in order to improve safety, reduce the site area, and simplify maintenance, the transformer and the gas-insulated switchgear are sometimes connected by a gas-insulated bus bar. It's getting more and more. In addition, since this gas-insulated busbar can be exposed to hundreds of winds in some cases, a lightning arrester is often installed near the transformer to protect the gas-insulated busbar and the switchgear connected to it from surnos.

On the other hand, in ultra-supervoltage substations where the power transmission voltage is 220KV to 500KVfa degrees O, the equipment is large and heavy.
The overall height of the transformer and switchgear 1i11 will be increased. Therefore, the center of gravity becomes higher and its earthquake resistance decreases.

For this reason! Gas insulation I#-
In particular, the connection points on the transformer side are likely to be destroyed, and the F space section or insulators, insulators, etc. used to support the conductors are likely to be damaged, and if such breakage or damage occurs, it will become impossible to send the seal. However, since ultra-high voltage substation equipment is used on the main power line, short-term power outages cannot be tolerated.

Therefore, in order to take such measures, it is possible to support the gas-insulated busbars placed at high places, especially the connecting ends on the transformer side, with strong frames, but this requires many materials, resulting in large size and high cost. There are some inconveniences such as confusion.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and its purpose is to provide the vicinity of the transformer-side connection part, which is located at a high place of the gas-insulated bus bar connected to the transformer and is easily affected by external vibrations. The purpose of the present invention is to provide a gas insulated bus bar connection location that can support the gas insulated bus bar without using a dedicated support frame and that can reliably prevent damage to the gas insulated bus connection and other parts caused by external IS disconnection. .

[Summary of the invention]

In order to achieve this object, the present invention provides support by a lightning arrester disposed near and below the transformer side connection portion of the gas insulated bus bar.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to an illustrated embodiment. In the figure, 1 is 4 whose interior is divided into three layers by partition plates 2 and 2.
111, and each phase is transformed in each chamber in this valve 1! ! 3
...is now contained. These transformers 6s
... has the same configuration.

That is, the inner space 4 is a transformer body, and a primary side outlet 11 is provided at one end of the upper surface of the transformer body 4, and a secondary side outlet 1g is protruded from the other end 11 of the upper surface of the transformer body 4, respectively.

Further, a gas insulated bus bar connecting portion 1 is provided on the secondary side solar panel s6 in a horizontal manner and extends along the longitudinal direction of the transformer main body 4. Another 1 this gas #! ! A horizontal portion #a of a T-shaped connection @1 is connected to the edge WI connection portion 1 via a Plexidel joint 1 in a tall manner.

The upper end of the straight portion of the 5-shaped fx insulated bus 11 is connected to the lower end side of the vertical portion 9b of the -1 trx gas insulated bus bar through a flexible joint 1#.

The lower end of the temporary portion IIm of this second gas insulated bus 11 is supported and fixed by the upper end of the lightning arrester s11 placed directly below it.
It is in a state of being Also, @2 gas insulated bus 1
At this time, the horizontal portion 11b of No. 1 extends along the transverse direction of the transformer body 4, and is connected to the horizontal portion 13m of the horizontal T-shaped gas insulated bus bar 13 of @3.

Further, the lower end of the straight portion xxb of the third gas insulated bus bar 11 is connected to the gas insulated bus bar 15 of @4 via a flexible joint 14. The other end of this fourth gas insulating base 1g111 extends outside the building 1 and is connected to a connected part (not shown) such as a shutoff device or an external outlet.
It is connected to the main d x @edge bus 1-.

In the figure, 1r is a primary side neutral point switch, 18 is a secondary side neutral point switch, and 11.1- is a tag switch.

Therefore, in the configuration of the present invention described above, the flexible joint 1. II1.14 and gas insulated busbar #, 11, 11.
11 of the connecting IS clamping bus system 21 from the gas insulated bus connection part 1 of the transformer 3 to the main gas insulated bus 16, the vicinity of the connection part 1 to the gas insulated bus NP, part 1 of the gas insulated bus 11 is shown below. Because it is supported by the shield placed in the 116z z, it is possible to prevent the influence of external vibrations such as earthquakes as much as possible, and prevent damage to the connection points of the gas insulated bus system 2 and other gas compartments or insulating spacers and insulators for supporting conductors. Damage can be prevented.

Furthermore, if the lightning arrester 12 needs to be replaced due to some kind of failure, the #I2 gas insulated bus bar (1
If you support 1) with a temporary stand, then i! The device 12 can be easily stored and removed to reduce power outage time.

In addition, in the above-mentioned example, Ie! is an example of a phase-separated type. 1
The same method can be used for the three-tube-finger type.

Moreover, the gas-stressed busbar system 21 for III connection may be formed without using the flexible joints 11, 10, and 141f.

In addition, it goes without saying that the present invention can be implemented in various convenient forms without departing from the gist of the present invention.

〔Effect of the invention〕

As explained above, according to the present invention, the vicinity of the connection on the transformer side, which is located at a high place and is not affected by external vibrations on the gas-insulated bus bar connected to the transformer, can be moved without using a dedicated support assembly. It can support gas-insulated busbar connections and other damage caused by external vibration without increasing the size or cost.
(It has the effect of actually being able to prevent this.)

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic plan view, FIG. 2 is a front view taken along the line 1-1 in FIG. It is a diagram. 1... fEE device, d... secondary side sunrise part, 1... gas insulated bus bar connection part, ri... IIl gas insulated bus bar, 1
1...@2 gas insulating motherboard, 11... Arrestor, IJ
...1'! 3 gas insulated bus bar, 15...114 gas insulated bus bar, 1-... main gas insulated bus bar, 21...
For connection, insulating motherboard #IiJ system. Representative Patent Attorney Suzue Takehiko 1st WIA ■ Figure 3

Claims (1)

[Claims] In systems that connect connected parts such as gas-insulated switchgear, external outlet ports, etc. and transformers via gas-insulated busbars, the above is a lightning arrester placed near the 11m connecting end of the transformer and immediately below it. A gas-insulated busbar connection device characterized by supporting.