JPS5863012A - Gas insulated cubicle 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 The present invention relates to a gas insulated cubicle device configured by housing a plurality of electrical devices in a common metal container.

Gas insulated switchgear, which is currently in general use (double use), stores each electrical device, such as a disconnecting section and a breaker section, together with an insulating gas, such as SF gas, in each metal container. By the way, in the gas insulated switchgear with the above configuration, the 8Fs gas is sealed at high pressure, so the metal container must satisfy the conditions for a pressure container. Since they are connected in combination, they have the disadvantage that assembly is troublesome.

This (on the other hand, recently, multiple electric devices are housed and arranged in a metal container, and inside this metal container, atmospheric pressure S]r
・Gas insulated cubicle filled with gas (hereinafter referred to as G
ICs) are being developed. C'--Is it possible to put the electrical equipment that makes up the GIC in a metal container (=rational (-) or small size (:
It is impossible to avoid the problem of how to configure the GIC, and the application of GIC is being considered for power distribution and power reception, and its single-wire circuit is known, for example, as shown in Figure jS1. In this circuit (2), the code is led out from the mother @ 2 part connected to the bushing 1 led out from the primary side of the transformer to the cable head 5 via the breaker 3 and new circuit switch 4 for 2 circuits. The part indicated by 9 is constructed with GIC.The GIC includes a grounding device 6, a lightning arrester 7, and a current transformer 8.

The present invention has been made in view of the above points, and an object of the present invention is to obtain a gas-insulated cubicle device that can rationally arrange electrical equipment and achieve miniaturization.

Figures 2 and 113 (2 show structural diagrams of an embodiment of the present invention. Figure 2 is a plan view of GIC, Figure 3 is a cross section of Figure XX of WII2, Elements C; will be explained using the same reference numerals.In FIG. Reference numeral 11 uses an oil-gas bushing, and the surface opposite to the transformer connection side is connected to a metal case 12 filled with gas at approximately atmospheric pressure (=SF) as shown in FIG. 2C. Pushin of each phase: , gla, llb, li
e is on a straight line parallel to the installation surface (two devices are installed).

The metal case 12 is divided into two gas sections 1 by a partition plate 14 inside the metal case. The side opposite to the mounting surface of the bushing 11 of the metal case (the second side is each gas interrupter 13a where the gas interrupter 13 is arranged).

13be 13c's one-pole side outlet is on the extension of each bushing 11a, llb, 1ieO axis (= exists, and the bushing 11 and the gas interruption @13 are connected to the connection conductor 16a, respectively.
16b and 16e. Here, the connecting conductor 16 is as shown in Fig. 3 (2. Metal case 1
2. On the other hand, the opening on the other pole side of the gas breaker 13 is connected to the connection conductor 16 arranged at the upper part of the metal case ν as shown in Figure WL3 (; Main conductor 35m via connecting conductor n parallel to
35b and 35c, respectively. This main conductor 3
5m, 35b, 35c are connecting conductors 22m, 22b
, the part that connects with 22g (forms a T shape,
The bushing is pulled out on the left and right sides centering on the middle phase 11b of the bushing. The disconnectors 17 and 18 are equipped with a fixed contact 1B19 and a movable current collector installed below the fixed contact part 19, and are connected via a movable rod 4 that is in constant contact with the current collector I. The two liquid contact parts 19 and 20 are separated. The fixed contact portion 19 is connected to the other pole side C2 of the gas interrupter 13 through the main conductor A and the connecting conductor N, respectively. Note that the main conductor is supported by insulating spacers 2 at the locations where it passes through the partition plate 14. The movable rod 4 is an insulating support that supports the movable side collectors 9 of the disconnectors 17 and 18, and the movable rod 4 is attached to the partition plate 14 and the support plate 15 with an operating member 6 (
It seems to be operated from 2 (2).The song is disconnector 17
One end is connected to the collector 20 of ゜18, and the other end is a connecting conductor extending to the side opposite to the side where the bushing 11 is arranged.
Yu is located. That is, lightning arrester 27, metal case 12
The lower wall of the metal case 120 located at the axial extension of the evacuator (the cable head) The lightning arrester 4 and the couple head are electrically connected together with the connecting conductor. The part facing the side wall of the metal case 1
ll=tD9 by providing the fixed contact part 26a of the grounding device 9,
The side wall of the metal case (the two blades 26b on the J side come into contact with each other and separate from each other). Therefore, as shown in Figure 3 (2), the gas breaker school and the bushing 11 on the transformer side
0 (two new circuit devices 17, 18, lightning arrester n, cable head row, gas bushing 11 and both sides C perpendicular to the axis connecting the interrupter 13;
Inside C2 is placed. On the other hand, Figure 2 4 = Disconnector 1 as shown
7.18 and the grounding device 129, etc., are all housed in C2 of the operation panel (9). The equipment can be operated all at once. Reference numeral 31 is an operating device for converting the gas breaker into a gas breaker, and the lower part of the gas breaker 13 (2) is attached.The cable head row is connected to the cable support from the bottom of the metal case. This cable 32 (to which the current transformer part is attached. Also, the fixed contact part 19f of the disconnector 18
A new grounding device R34 may be provided, and the operation mechanism of the other device 34 can also be housed within the operation wall (equipment) and operated all at once.

As explained above (2) According to the present invention (2), one side of the box-shaped metal case (2) The bushings 11 of each phase are introduced side by side in the lateral force direction C2, and the gas of each phase C2 is introduced along the extension line of each bushing. The breaker 13 is arranged laterally (two side by side, and the metal case 12 is provided between the bushing 11 and the gas breaker 130,
Disconnectors 17 and 18 for each line are arranged on both sides as the middle phase center of the bushing 11 and the gas breaker 13. Place the remaining parts so that they are on the same line, and connect the connecting conductor A that connects the gas breaker 13, the new line switch 17, 18, and the lightning arrester with the single cable head Z.
26 is arranged and connected at right angles to the arrangement of each device, that is, in a horizontal direction (-extending direction), so that the length of the conductor connecting each device can be minimized.Also, the bushing By allocating each device around the middle phase of 11, the size of the GIC can be kept within the range of the transformer size, making it possible to make the GIC smaller overall. A gas breaker for each phase should be installed on the outside of the metal case 12 (two drawers should be made into independent gas compartments, and a GIC should be arranged; It has the advantage of being convenient as a breaker without breaking the gas tightness other than the container.Therefore, in the same GIC shape, the same parts and the same reference numerals as in Figures 2 and 1143 are shown in Figures 4 and 5.
As shown in the figure, even when the power receiving system uses two air bushings in the cable head row, the arrester is fixed on the metal case. (Although the lightning arrester 4 is fixed at the lower wall (2), it has a structure that allows the aerial bushing for power reception to be easily connected to the upper side of the metal case 12.As explained above, The overall shape is small (bifurcated and rational) and can provide a gas insulated cubicle in which the equipment is placed.

[Brief explanation of the drawing]

Figure 1s1 is a single-line diagram to which the present invention is applied, Figure 2 is a front view showing an embodiment of the present invention, and Figure 3 is a cross-sectional view of Figure 2.
- A plan view seen from the X-ray, `WJ4 is a plan view showing another embodiment of the present invention, and FIG. 5 is a plan view taken along the line Y--Y in FIG. 4. 11-...Oil-gas bushing 12...Metal case 13...Gas breaker 14...Partition plates 17, 18...New road device 16. u, 26.3
5-...Connecting conductor n...Surge arrester A...Cable head δ, 29.34...Grounding device A...
・Air bushing (7317) Agent: Patent attorney Noriyuki Chika (and 1 other person) Figure 1

Claims (2)

[Claims] (1) An outlet is led out from the side of the transformer, and a gas insulated switchgear is installed in conjunction with this transformer, and a breaker 4 is provided above the extension of the outlet of the transformer.
A gas insulated cubicle device characterized in that the gas insulated switchgear comprising a new circuit switch and a grounding device is arranged between a breaker and a transformer. (2) Connecting the breaker to the lI1 side exit of the transformer 411
The gas insulated cubicle device according to claim 1, wherein a power receiving device such as a bushing or a cable head is disposed on both sides of the 0M.