JPS58123303A - Gas insulated opening and closing 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 is a main component in gas insulated switchgear. I would like to place multiple units for transmission or transformer 4 on the right side of the center of the fM meeting.
Concerning improvements in switchgear.

Figure 1 shows an example of a single-line connection diagram that uses gas-insulated switchgear, which has been manufactured in large numbers in recent years, and has multiple overhead power transmission line connection circuits and transformer connection circuits at one place. In Figure 1, 1 is the first bus line, 2 is the second bus line, 3, 4, 11.12
5, 13 are bus-bar side disconnectors, 6, 7, 14 are circuit breakers.
15 is a current transformer for measuring instruments, 8 is a power transmission a-side disconnector, 9 and 16 are grounding devices, 10 is a gas insulated pipe terminal end for connecting a power transmission line, 1
7 is the terminal end of the gas insulated conduit for connecting the transformer, 18.19 is the gas insulated conduit, and 20.21 is the branch busbar.The left side of the figure is the overhead power line connection circuit, and the right side is the transformer connection circuit. be.

When configuring a gas insulated switchgear according to the single line connection diagram shown in FIG.
f.Sho 53-42100 or Published Patent Publication Sho 5
There is a method such as 5-32500. In these configurations, the breaker container is placed horizontally and the cough breaker is connected to the breaker on the mm extension. The main bus II is placed in a position substantially orthogonal to this axis at a position that is off to either the top or bottom of this axis.

Based on these configuration examples, a gas-insulated switching arrangement A is constructed according to the single-line fm connection diagram shown in Fig. 1, and nine cases are shown in Figs. 2 and 3. FIG. 2 is a plan view, and FIG. 3 is a side view. In the accompanying drawings below, component devices for the A phase are denoted by A, those for the B phase are denoted by Btl-, and those for the C phase are denoted by C. Second
In the figure, main bus lines IA, IB, IC, 2A, 2B, 2C
When looking at the center, the left side is the unit for connecting the overhead line, and the right side is the unit for connecting the Henta 4. Each phase has almost the same configuration. Insulated conduit end IOC, breaker 5C, bus disconnector 3
A gas insulated conduit end portion 17C for connecting the axis and the transformer is composed of C, 4C. The axes constituted by 'l,, disconnector 13C, busbar disconnector 12C, IIC' are parallel and perpendicular to the queen mother @IA, 1B, IC, 2A, 2B, 2C, and each of the left and right Regarding the relationship between each phase of the parts, both the left and right units are arranged at equal intervals with a dimension of 2l in the figure, and both the left and right units? Regarding the relationship between the units, both the left and right units have an axis including the above-mentioned breaker 5C, an axis including the breaker 13CQ, and a metal line.
It is constructed according to dimensions. Also, in Figure 3, the above-mentioned The extension axes of the IR devices 5C and 13C are horizontal and on the same plane, and the queen line i is shifted downward from this plane.
A, IB, IC, 2A, 2B, and 2C are arranged in parallel on the same plane. In addition, a gas insulated conduit 18C is vertically downward from the gas insulated conduit terminal end lOC for power transmission line connection.
A gas insulated conduit 19C extends vertically downward from the terminal end $17C of the gas insulated conduit for connecting the transformer.

Generally speaking, for one protection device D, for a circuit breaker,
Inspections are performed taking into account the number of times the fault current is cut off when the power transmission circuit fails, the number of times the load current is cut off during normal operation, and the period of commercial operation. In addition, in many cases, compatibility is required to allow for replacement of the breaker body in the event of failure. '@2~3
The conventional example shown in the figure has the disadvantage that the workability of inspecting the circuit breaker and replacing the main body of the circuit breaker is very poor as described above. In the conventional examples shown in Figures 2 and 3, when inspecting the breaker section of breaker 4, since both ends of the breaker are connected to other equipment, 1 is not installed on the island where the inside of the container is to be inspected. As shown in Figure 2E, it is necessary to provide an appropriate manhole on the side of the container. In addition, when carrying out detailed inspections including parts replacement at section VC with the cutoff section VC, it is advisable to take it outside and pull out the cutoff section. The process involves disassembling the breaker to a size that can be taken out from the manhole diameter and taking it outside, and then reassembling the breaker in the container after inspection. In order to efficiently perform this series of operations inside the breaker container, it is necessary to increase the diameter of the manhole and the diameter of the breaker container. However, the increase in the diameter of the manhole and single shelter vessel results in an increase in the manufacturing cost of the breaker. In addition, disassembling and reassembling a breaker having a complicated structure within a valley device with a limited caliber can lead to incorrect operations, which can impair the reliability of the breaker itself. Also, considering the work of replacing the breaker body, the younger brother 1 can be replaced as shown in the younger brother 2 figure D.
The first step is to remove the connecting part between the interrupter and the connector connected to it, and the second step is to create a gap in the equipment connected in V series using a flexible motherboard, etc.
Use t- to shift the breaker body in the horizontal direction, v14
The step is to pull out and move in the direction opposite to where the main bus bar is located. In addition, in the conventional example, as shown in Fig. 3, the plane where the main bus bar is placed is at the bottom and the plane passing through the fine details of the breaker container is provided at the top, so that the single center height h of the breaker container is , is relatively high, and in order to safely perform the above-mentioned breaker body replacement work, it is necessary to make part of the breaker blade part splittable and remove it, and to lower the center of gravity of the breaker container and move it. Other methods are required. As described above, in the conventional example, a great deal of time and effort is required to replace the interrupter body.The present invention improves the drawbacks of the arrangement of the gas-insulated switchgear holder according to the conventional method described above, and Gas-insulated switching system that makes it easy to inspect and replace the breaker body, and significantly reduces the time and effort required to carry out the work*
The aim is to provide W.

11 FIGS. 4 and 5 show an example of a gas insulated switchgear configured according to the single line connection diagram of FIG. 43 based on the present invention. The younger brother's figure 4 is a plan view, and the 5th figure is a side view.
When facing the main motherboard @IA, IB, IC'', 2A, 2B, 2C, the one on the left side is the unit for connecting one line of overhead feed, and the one on the right side is the unit for connecting the transformer.Each phase has almost the same configuration. For example, in the C phase, the first axis connected by the power transmission line connecting gas insulated conduit end 10C, the busbar circuit devices 3C and 4C, and the breaker whose connection part is U-shaped. 5C
The axis line of younger brother 2 is in line with Kama, and Shadanhiro 5C is a curved branch mother @
It is connected to the equipment on the first axis of the previous century at 22C'123C.

In addition, the gas insulated conduit terminal end 17C for connecting IE6, bus disconnector 12C, and disconnector 13 (' axes are parallel and branch busbar 24C is curved at the end of @3 axis line formed by IIC) , 25C, and the axis of the breaker 13C is connected to the third axis machine 4 at the same point as the extension of the axis of the younger brother 1 in the above-mentioned sending line connection unit. .Also, to extend the axis of the younger brother 2 of the above-mentioned circuit breaker 5C,
Voltage connection unit B phase bus bar side disconnect aIIB, 12
B and a gas insulated path termination portion 10B for connecting to a transformer are arranged. In addition, the axes of the younger brother 1, younger brother 2, and younger brother 3, which are parallel to each other, and the jade bus @IIA, lm, IC2A, 2#3, 2C are perpendicular to each other, and the right (/) - L unit with respect to the main bus line. }, for example, the above-mentioned 'I & 1 of phase C
And between the axes of @2 and the corresponding II1 and second axes of the adjacent phase B phase machine fiK, and between the second axis of C phase and the first axis of B phase are both in the $4 figure. of! They are arranged at equal intervals with the dimensions of The axes of the right-hand unit's circuit breaker are approximately the same on the extension of the axis of the equipment that does not include the breaker. Also, cut off at Figure 5! The respective axes on the extensions of 5C and 13C are horizontal and on the same plane) The main bus lines IA, IB, IC, 2A, 2B, 2C are shifted upward from this plane.
are arranged parallel to each other on the same plane. In the @*S diagram, the king bus is supported by the new circuit for the bus of each corresponding phase. With this configuration, the fine height h of the breaker is It has been made low ▲. In the configuration examples of the fourth diagram and the fifth diagram using the present invention, the inspection work of the breaker and the replacement work of the breaker main body are carried out as follows.

When inspecting the breaker 4, as shown in Figure 4G, seal the U-shaped breaker container with a lid that can be opened and closed on at least one 4R side of the 4R side of the U-shaped breaker container. During inspection, the lid can be opened to allow easy visual inspection of the shutoff section. In addition, when pulling out the breaker part, the main body part can be removed by removing only the part that fixes the breaker part to the container 4 and part of the operation connection link in the opposite direction to the side where the main bus bar is installed. It can be pulled out from the opening of the aforementioned lid without disassembling it.

In addition, to replace the PLRR unit, simply remove the connection between the breaker and the curved branch busbar, and then pull it out and move it in the direction opposite to where the main busbar is located, as shown in Figure 4. . Also, this work can be easily done because the height h from the axis of the breaker is 1, as shown in Figure 5. As described above, according to the present invention, the rising edge of the breaker is made into a U-shape and is led out horizontally, and the disconnector connected to the breaker and the branch busbar are connected to the rising part of the breaker in the U-shape. A space that can be used for inspection and replacement of circuit breakers in the opposite direction to the side where the main busbar is installed, with the axis of these devices parallel to the axis of the horizontal 4kL, -p 5$6. By holding the breaker, inspection and replacement work of the circuit breaker becomes easier.
A gas insulated switchgear can be constructed that saves time and labor. Further, in the present invention, it is not necessarily necessary to use the double bus system configuration shown in FIGS. 1 to 5, but a single bus system configuration can also have the same effect. Also, the same effect can be expected with a configuration in which only five busbars are used as three-phase collective busbars.

[Brief explanation of drawings]

＠Figure 1 is a wiring diagram of an embodiment to which the present invention is applied, ＠
2 and 3 are a plan view and a side view showing the configuration of an embodiment of a conventional gas insulated switchgear formed according to the single line diagram of FIG. These are a plane view and a four side view showing the configuration of an embodiment of an insulated switchgear. 1' 1, IA, IB, 1 (-'... Middle mother II 2, 2A, 2
B, 2C. ．． ．． ，! , bus j, 3A, 3B, 3C. ．． ．．
Disconnect @4.4A, 4B, 4C disconnector 5.5A, 5B, 5
C. ．． ．． L or Iyr device 6, ciC-instrument current transformer 7, 7
C...Measuring current transformer 8.8C disconnection 49.9C...Grounding ijt position 10, IOA, 10B, IOC gas insulated bus bar terminal part 11 for connecting the IOC wire, IIA, IIB, lIc disconnector 12. 12A, 12B, 12C-・Disconnect 413, 13A
, 13B, 13C-1, disconnector 14.14C/R for total a
Flow a15, 15 ('Meter current transformer 16.16C grounding device 17.17A, 17B, 17C transformer connection gas insulated bus/trench termination part 18.18C gas insulated bus 19, 19 (''・
・Gas insulated bus 20, 20C branch bus 21, 21C branch bus 22C ・Curved branch bus @23C' ・Curved branch bus 24
C curved branch bus 25C curved branch bus -15

Claims (1)

[Scope of Claims] (1) The main busbar is placed with the living cans arranged in a straight line in the center! A breaker connected to the branch bus line and the main bus line on a second plane different from the plane of l, orthogonal to the direction in which the main bus line is arranged, facing both sides of the main bus line, and on the same plane;
In a gas-insulated switchgear that has multiple units including a new line switch, a current transformer, a connection terminal part with a transmission line or a passenger pressure device, etc., the first axis of the main body of the breaker container is set horizontally. None The connection part with other equipment provided at the own end of the breaker is configured in a U-shape in plan view, and the connection part with other equipment provided at the own end of the breaker is drawn out in the horizontal direction, and the other equipment and branch bus bar connected to the breaker are I82 is arranged in a straight line across the breaker, and the axis of I82 is parallel to the axis of the younger brother l of the breaker container.
The axis of the younger brother 1 of the unit on one side and the axis of the younger brother 2 of the unit on the other side between the same or different valley phases with the main generatrix in the center are A gas insulated switchgear characterized in that the axis of the unit's first half 2 and the first axis of the enit on the yuzu side are almost the same. (2) In the gas-exhausted ll# switchgear according to claim 'younger 1 dC, the distance between the I8l axis and the -2 axis is set in the direction V opposite to the main generatrix line, and the I810 width line. A gas insulated switchgear characterized in that the breaker container having the axis line on the extension of the breaker container or the breaker part inside the breaker is spaced so that it can be pulled out. In the insulated switchgear described in 2 products, the plane of the younger brother 1 on which the main bus bar is arranged is at the top, and the second plane on which the equipment D attached to the main bus bar is disposed is at the bottom. Gas insulated switchgear with % mold.