JPS6328205A - Gas insulated switchgear for sectioning bus bar of dual bus bar system - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a 2-small HJ line type gas insulated switchgear using a breaker unit having three lead terminal parts,
Especially the outlet terminal part and ten! The present invention relates to a gas insulated switchgear for two busbar sections having an economical configuration by improving the arrangement and connection method of one wire.

(Prior technology) In recent years, with the increase in demand for electricity in urban areas, insulated switchgears have become widely used for installation in narrow spaces near cities and for harmonization with the surrounding environment. J. It's become a sea urchin.

In addition, as the voltage and capacity of the insulated switchgear are increasing, there is a demand for miniaturization of the d3-layer, improvement of reliability, and simplification of maintenance.

Figure 0 is a general bus line system - a single line connection diagram for a line. It is connected to the connection part C1-1.

CI'1 is a current transformer.

In addition, the other pole side Ij of the breaker CB, the disconnector for the main bus Bus 1 []S1 and the 10R [the disconnector for the line BUS2 river]
S2 respectively to the main bus lines BUS1. It is 18 consecutive to BUS2.

Conventionally, this J, 33 typical equipment arrangement ri +! II + As an example -) 'Merica Patent No. 4
, No. 241, 379 is known.

That is, the bib disconnector C1B includes a container 30 filled with insulating gas arranged horizontally with respect to the installation, a breaker for each phase 32Jj housed inside the container 30, and both ends of the breaker 32. Each phase current-carrying conductor 33a respectively derived from
33b and -C. 1) The current-carrying conductor 33a led out from one end of the disconnector 32 is connected to the inside of the container 30.
2 and along the axis of this container 30.

31b to the inside of the container 30 (branched and led out to one side of the container 30).In other words, one current-carrying conductor 33a1 of the current-carrying conductor 33a is perpendicular to the axis of the container 3(). The other current-carrying conductor 3382 is parallel to the axis from the middle of the current-carrying conductor 33a1, and then perpendicular to the axis to lead out from the branch lead-out portion 31a.
Derived from b.

On the other hand, a current-carrying conductor 33b led out from the other side of the breaker 32
passes through the current transformer 20 of each phase corresponding to the CTI in FIG. They are led out to branch outlet portions 31d provided in the direction and the direction perpendicular to each other. A voltage transformer 40 is connected to the branch 1] outlet 31d, and a grounding switch 41 ("S" in FIG. 3) and a disconnector 4 are connected to the conductor led out from the branch outlet 31c.
2 (DS3) and cable head 43 (CI-1
) or connected. In addition, two wires arranged perpendicularly to the axial direction of the container 30 via a disconnector 45 (DSI, DS2) are connected to the front portion 111A and the outlet portions 31a and 31b.
one main busbar B U S 1 .

B LJ S2 is connected.

(Problems to be Solved by the Invention) As described above, although Figures 6 and 7 show (14 examples) of substation line circuits, in an actual substation, the main bus In some cases, a gas-insulated switchgear for the 111-line segment line is required to connect and disconnect between the lines.

FIG. 8 (This is an example of an Li line connection diagram of such a bus line division line.

By the way, from an economic point of view, if the line circuit line (RJ line and branch line) used in a substation are manufactured as completely separate insulated switchgears, It is desirable that the common components be shared and that the two be interchangeable with the minimum number of changes necessary.

Therefore, the present invention has been made in order to satisfy the above-mentioned needs, and in a case where a breaker, a current transformer, and a current-carrying conductor are arranged in a container, it is possible to significantly change the configuration when used for line circuits. It is an object of the present invention to provide a gas-insulated switchgear for busbar section circuits that can be applied without having to do so.

(Structure of the Invention) (Means for Solving the Problems) In order to achieve the above object, according to the present invention, a current transformer is housed in a breaker container, and a current transformer is housed in the breaker container. Three outlet terminals are installed in the direction (J, the main bus is connected to the two outlet terminals on the back of these outlet terminals, and the first energizing terminal drawn out from one side of the breaker is connected to one of the main busbars. The conductor is connected to the other -I] bus bar,
A second current-carrying conductor is drawn out from the other side of the breaker 1b and passed through the current transformer arranged in the axial direction of the breaker;
The lead terminal portion to which the main bus is not connected is closed with wire.

(Function) With this configuration, the main bus bar or disconnector can be connected to the lead terminal section blocked by the wire, and the first. Second
By changing the current-carrying conductor, it can be applied as a cass insulation switchgear for line circuits.

(Example) An example of a gas insulated switchgear according to the present invention will be specifically described below with reference to FIGS. 1, 2, 3, and 4. In FIG. 1, one breaker 11 is arranged with the axis of the container in the vertical direction, and the container [in this case, three outlet terminal portions 11a to 11C are arranged vertically in a row in the horizontal direction. .

Similarly, the other breaker 12 has three lead terminal parts 1.
2a to 12c are provided, and the two circuit breakers are installed with their respective lead terminal portions 11a to 11C and 12a to 12c facing in parallel and in the same direction.

The output terminal portion 11a of the breaker 11 is connected to the two busbars 1 via the disconnector 5, and the output terminal portion 11G
is connected to the main bus 2 or via a disconnector 6. After the main bus bar 2 passes near the lead terminal portion 12G of the ladder disconnector 12, it is lowered by the bus bar 9 of the mold 11 to approximately the same height as the lead terminal portions 11b and 12b.

The main bus 3 is connected to the other breaker 120 (output terminal section 121) via the disconnector 7, and the output terminal section 12
The main bus 4 is connected to the main bus 4 via a disconnector 8. Furthermore, the lead terminal part 11b of the breaker 1b and the breaker 1
The two outlet terminal portions 12c are each closed by the gain 1(). FIG. 2 shows a plan view of FIG. 1, and FIGS. 3 and 1 show cross-sectional views of the circuit breakers 11 and 12, respectively.

In FIG. 3, 43 is inside the breaker container 21.
First, the two-way conductor 24 pulled out from the lower part of the circuit breaker 220 is pulled out from the lower lead terminal part 11a. In addition, the current-carrying conductor 2 pulled out from above the breaker 22
3 is pulled out from the lead terminal portion 11G after passing through the current transformer 25. Output terminal portion 11a.

Current-carrying conductors 23 and 24 led out from the lead terminal portions 11a and 11G are respectively connected to the fixed side electrodes of the disconnectors 5 and 6 that are integrated with the main busbars] and 2 attached to the lead terminal portions 11a and 11G, respectively. Note that the container ends of the disconnectors 5 and 6 are closed a3.
Further, the movable side electrodes of the disconnectors 5 and 6 are connected to the main busbars 1 and 2, respectively. With the above configuration, the bus bar 1, the disconnector 5,
Current-carrying conductor 24, breaker 22, current-carrying conductor 23, disconnector 6
A gas insulated switchgear for the bus bar section having an electrical path for the main bus bar 2 is formed.

On the other hand, the gas insulated switchgear for busbar sections can be applied to a gas insulated switchgear for line circuits without significantly changing the overall configuration. In other words, Figure 5 shows
This is an embodiment in which the line circuit gas insulating device shown in FIG. 6 is constructed by making maximum use of the constituent members of the busbar section insulated switchgear of the present invention shown in FIGS. 3 and 4. The same parts as in FIGS. 3 and 4 are designated by the same reference numerals. Comparing Fig. 4 and Fig. 5, it is found that the output terminal portion 12c is
8 = Remove the lid 10 and insert the disconnector 51 here.

On the other hand, the current-carrying conductors 23.24 in the container 21 shown in FIG. 4 are changed to current-carrying conductors 53.5/l as shown in FIG. Connect to.

In this way, the gas insulated switchgear for the line circuit shown in FIG. Economical.

〔Effect of the invention〕

The above-described gas insulated switchgear for two small HJ line busbar divisions according to the present invention is applied to the gas insulated switchgear for line circuits by changing the shape of the container housing the breaker and current transformer. Therefore, it is possible to standardize the components of the device, and an economical device configuration is possible.

[Brief explanation of the drawing]

Figures 1 and 2 show a gas insulated switchgear for dividing two R1 wires and a substitute line according to the present invention;
3 and 4 [J, sectional views of the circuit breakers 11 and 12 shown in FIG. A diagram showing
FIG. 6 is a single-line connection diagram of the line, FIG. 7 is a configuration diagram of a conventional device, and FIG. 8 is a single-line connection diagram showing lines of sight for bus bar division. 1.2.3.4...Main bus 5.6.7.8...Disconnector 9.../High i (Main bus 10...Lid 11,
12... Breaker 11a, llb, 11c, 12a, 12b,
12 c...Output terminal part 21...Container
22... Breaker 23, 24... Current-carrying conductor 25... Current transformer 26... Post type insulating spacer Agent Patent attorney Noriyuki Chika Yudo Hirofumi Mitsumata Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 '

Claims (2)

[Claims] (1) A sheath breaker is housed in a container filled with an insulating medium in the axial direction of the container, and first and second current-carrying conductors led out from both ends of the sheath breaker are led out, and A current transformer is arranged around the first current-carrying conductor in the coaxial direction with the breaker, and the container is provided with three outlet terminals in the same direction and perpendicular to the axis of the breaker. When two or more disconnector units are arranged with their respective outlet terminals facing parallel and in the same direction, the first outlet terminal of one of the breaker units is placed at approximately the same height as the outlet terminal. The arranged first main bus bar is connected, the second outlet terminal part is closed with a lid, and the third outlet terminal part is connected to the second main bus bar arranged at approximately the same height as the outlet terminal part. At the same time, after the main bus passes near the third outlet terminal of the other shield breaker unit, the arrangement height is changed to approximately the same height as the second outlet terminal, and the height of the main bus is changed to approximately the same height as the second outlet terminal. Close the third outlet terminal part of the Noshiya disconnector unit with a lid,
A third main bus bar, which is arranged at approximately the same height as the output terminal part, is connected to the second output terminal part, and further, a third main bus bar is connected to the first output terminal part, which is arranged at approximately the same height as the output terminal part. 1. A gas insulated switchgear for dual bus type bus bar division, characterized in that a fourth main bus bar is connected to the gas insulated switchgear for double bus bar division. (2) A patent claim in which each main bus bar is formed integrally with a disconnector, and the first and second current-carrying conductors at both ends of the breaker are connected to each main bus bar via the disconnector. Gas insulated switchgear for double bus bar type bus bar division as described in item 1.