WO2012081264A1 - ガス絶縁開閉装置 - Google Patents
ガス絶縁開閉装置 Download PDFInfo
- Publication number
- WO2012081264A1 WO2012081264A1 PCT/JP2011/051702 JP2011051702W WO2012081264A1 WO 2012081264 A1 WO2012081264 A1 WO 2012081264A1 JP 2011051702 W JP2011051702 W JP 2011051702W WO 2012081264 A1 WO2012081264 A1 WO 2012081264A1
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- WIPO (PCT)
- Prior art keywords
- current transformer
- main circuit
- movable
- fixed
- transformer mounting
- Prior art date
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/08—Arrangements to facilitate replacement of a switch, e.g. cartridge housing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Definitions
- the present invention relates to a gas-insulated switchgear used in, for example, power transmission / distribution and power reception facilities of power facilities.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-319515.
- a pressure tank containing a circuit breaker is provided in the interrupting part, a pressure tank is provided in the operation part, and both pressure tanks are filled with an insulating gas.
- the circuit breaker is supported in the tank via a support insulator.
- the circuit breaker is provided with a sealing electrode and sealed, and an insulating cylinder filled with an insulating gas and an inner end penetrating the sealing electrode hermetically.
- a fixed lead having a fixed electrode in the part and a movable lead having a movable electrode hermetically penetrating the sealing electrode through a bellows and having an inner end part.
- the outer end of the fixed lead is connected to the main circuit terminal via a conductor in the bushing.
- the movable lead is connected to the main circuit terminal via a conductor in the bushing.
- a sliding conductor that is slidable with respect to the movable lead is provided between the conductor and the movable lead.
- the conductors 13 and 17 are covered with epoxy resin.
- the electric field is relaxed by an epoxy resin coated on the conductors 13 and 17.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a gas insulated switchgear that can be miniaturized.
- a gas-insulated switchgear includes a grounding tank in which a circuit breaker is housed and an insulating gas is sealed, and a current transformer mounting cylinder in which one side is attached to an opening formed above the grounding tank.
- a gas-insulated switchgear comprising a main circuit conductor connected to a main circuit terminal provided on the other side of the bushing soot tube, the current transformer in a region located in the current transformer mounting cylinder of the main circuit conductor
- An insulator that extends downward from the lower end of the transformer mounting cylinder and extends upward from a connecting portion between the current transformer mounting cylinder and the bushing soot tube, and is disposed in the insulator.
- a grounding shield is provided which extends downward from the lower end of the current transformer mounting cylinder and extends upward from
- the gas insulated switchgear includes a grounded tank in which a circuit breaker is housed and an insulating gas is sealed, and a current transformer in which one side is attached to an opening formed above the grounded tank.
- the main circuit conductor is connected to the circuit breaker on the one side and on the other side
- gas-insulated switchgear According to the gas-insulated switchgear according to the present invention, a gas-insulated switchgear that can reduce the size of the device can be obtained.
- FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 showing the gas insulated switchgear according to Embodiment 1 of the present invention. It is a principal part expanded sectional view which shows the gas insulated switchgear concerning Embodiment 1 of this invention.
- FIG. 3 is an enlarged cross-sectional view of a main part taken along line BB of FIG.
- FIG. 3 is an enlarged cross-sectional view of a main part taken along the line CC of FIG.
- FIG. 1 is a side view showing a gas insulated switchgear according to Embodiment 1 of the present invention.
- 2 is a cross-sectional view taken along the line AA of FIG. 1, showing a gas insulated switchgear according to Embodiment 1 of the present invention.
- FIG. 3 is an enlarged cross-sectional view showing a main part of the gas insulated switchgear according to Embodiment 1 of the present invention.
- 4 is an enlarged cross-sectional view of an essential part taken along line BB of FIG.
- FIG. 2 showing a gas insulated switchgear according to Embodiment 1 of the present invention.
- 5 is an enlarged cross-sectional view of a main part taken along the line CC of FIG. 2 showing the gas insulated switchgear according to Embodiment 1 of the present invention.
- the ground tank 1 is electrically grounded, and an insulating gas is sealed inside.
- an insulating gas for example, as the insulating gas, dry air, nitrogen, carbon dioxide, etc., which has a warming coefficient of almost zero and is effective in preventing global warming. Insulating gas is enclosed.
- the circuit breaker 2 is composed of, for example, a vacuum circuit breaker housed in the ground tank 1.
- the movable side conductor portion 3 and the fixed side conductor portion 4 are provided.
- the operation unit 5 opens and closes the circuit breaker 2, and the operation rod 5 a is connected to the insulating rod 6 of the circuit breaker 2.
- Above the ground tank 1, a movable opening 1a and a fixed opening 1b are provided above the ground tank 1, a movable opening 1a and a fixed opening 1b are provided.
- the movable side current transformer mounting cylinder 7a is provided with a movable side current transformer unit 8a for measuring the current coaxially attached to the movable side opening 1a provided above the ground tank 1.
- the fixed-side current transformer mounting cylinder 7b is mounted with a fixed-side current transformer unit 8b for measuring the current coaxially attached to the fixed-side opening 1b provided above the ground tank 1.
- the movable side current transformer mounting cylinder 7a includes a movable side cylinder part 7a1, a movable side lower flange 7a2, and a movable side upper flange 7a3.
- the fixed-side current transformer mounting cylinder 7b includes a fixed-side cylinder part 7b1, a fixed-side lower flange 7b2, and a fixed-side upper flange 7b3.
- the movable-side current transformer unit 8a includes a movable-side current transformer 9a for measuring the current attached to the outer peripheral portion of the movable-side current transformer mounting cylinder 7a, and a movable that protects the movable-side current transformer 9a. It is comprised from the side protective cover 10a.
- the movable side bushing soot 11a has one side 11a1 attached to the upper flange 7a3 of the movable side current transformer mounting cylinder 7a by the movable side soot grounding flange 12a, and the movable side main circuit terminal 13a attached to the other side 11a2.
- This movable side soot tube grounding flange 12a shows a case made of an aluminum material.
- the fixed side soot tube grounding flange 12b is shown as being made of an aluminum material.
- the movable-side main circuit conductor 14a is inserted into the movable-side bushing bush 11a and the movable-side current transformer mounting cylinder 7a, one side is connected to the movable-side conductor portion 3 of the circuit breaker 2, and the other side is movable-side bushing 11a is connected to a movable main circuit terminal 13a provided on the other side 11a2.
- the movable-side main circuit conductor 14a is connected to the movable-side conductor portion 3 of the circuit breaker 2, and the other side is located within the one-side 11a1 of the movable-side bushing tube 11a.
- the circuit conductor 15a is constituted by the movable first main circuit conductor 15a and the movable second main circuit conductor 16a connected to the movable main circuit terminal 13a.
- the fixed-side main circuit conductor 14b is inserted into the fixed-side bushing soot 11b and the fixed-side current transformer mounting cylinder 7b, one side is connected to the fixed-side conductor 4 of the circuit breaker 2, and the other side is fixed-side bushing soot 11 b is connected to a fixed main circuit terminal 13 b provided on the other side 11 b 2.
- the fixed-side main circuit conductor 14b is connected to the fixed-side conductor portion 4 of the circuit breaker 2, and the other side is fixed to the fixed-side first main conductor 14b located in the one-side 11b1 of the fixed-side bushing tube 11b.
- the circuit conductor 15b is constituted by the fixed first main circuit conductor 15b and the fixed second main circuit conductor 16b connected to the fixed main circuit terminal 13b.
- the movable-side insulator 17a is located below the movable-side lower flange 7a2, which is the lower end of the movable-side current transformer mounting cylinder 7a, in the region located on the movable-side current transformer mounting cylinder 7a of the movable main circuit conductor 14a. While extending, it is provided to extend upward from the connecting portion between the movable-side current transformer mounting cylinder 7a and the movable-side bushing tube 11a.
- the lower side 17a1 of the movable-side insulator 17a is located in a region of the movable-side first main circuit conductor 15a located in the movable-side current transformer-attached cylinder 7a.
- the lower end of the movable side lower flange 7a2 that is the lower end extends in the vicinity of the movable side conductor 3 of the circuit breaker 2, and the upper side 17a2 of the movable side insulator 17a is movable with the movable side current transformer mounting cylinder 7a.
- the case where it is extended and provided in the vicinity of the connection part of the movable side 1st main circuit conductor 15a and the 2nd main circuit conductor 16a from the connection part with the side bushing pipe 11a is shown.
- the outer diameter dimension of the lower side 17a1 of the movable insulator 17a is configured to be larger than the outer diameter dimension of the central portion of the movable insulator 17a, and it is close to the movable conductor portion 3 of the circuit breaker 2. It is configured to have a smaller diameter.
- the outer side dimension of the upper side 17a2 of the movable side insulator 17a is larger than the outer diameter dimension of the central part of the movable side insulator 17a, and the movable side first main circuit conductor 15a and the movable side The smaller the diameter is, the closer to the connection portion with the second main circuit conductor 16a.
- the fixed-side insulator 17b is arranged in a region below the fixed-side lower flange 7b2, which is the lower end of the fixed-side current transformer mounting cylinder 7b, in a region located on the fixed-side current transformer mounting cylinder 7b of the fixed-side main circuit conductor 14b. While extending, it is provided to extend upward from the connecting portion between the fixed-side current transformer mounting cylinder 7b and the fixed-side bushing rod 11b.
- the lower side 17b1 of the fixed-side insulator 17b is located in the region of the fixed-side first main circuit conductor 15b located in the fixed-side current transformer-attaching cylinder 7b.
- the lower end of the fixed-side lower flange 7b2 that is the lower end extends in the vicinity of the fixed-side conductor portion 4 of the circuit breaker 2, and the upper side 17b2 of the fixed-side insulator 17b is fixed to the fixed-side current transformer mounting cylinder 7b.
- the case where it is extended and provided in the vicinity of the connection part of the fixed side 1st main circuit conductor 15b and the fixed side 2nd main circuit conductor 16b from the connection part with the side bushing soot pipe 11b is shown.
- the outer diameter dimension of the lower side 17b1 of the fixed insulator 17b is configured to be larger than the outer diameter dimension of the central portion of the fixed insulator 17b, and goes to the vicinity of the fixed conductor portion 4 of the circuit breaker 2. It is configured to have a smaller diameter. Further, the outer diameter dimension of the upper side 17b2 of the fixed-side insulator 17b is configured to be larger than the outer diameter dimension of the central portion of the fixed-side insulator 17b, and the fixed-side first main circuit conductor 15b and the fixed-side insulator are fixed. The smaller the diameter is, the closer to the connection portion with the second main circuit conductor 16b.
- the movable-side insulation support fitting 18a is attached to the movable-side upper flange 7a3 of the movable-side current transformer mounting cylinder 7a, and supports the movable-side insulator 17a.
- the fixed-side insulating support bracket 18b is attached to the fixed-side upper flange 7b3 of the fixed-side current transformer mounting cylinder 7b and supports the fixed-side insulator 17b.
- the movable-side ground shield 19a is disposed in the longitudinal direction in the movable-side insulator 17a, and the lower-side end 19a1 of the movable-side ground shield 19a is the lower end of the movable-side current transformer mounting cylinder 7a.
- the upper end 19a2 of the movable-side ground shield 19a extends upward from the connecting portion of the movable-side current transformer mounting cylinder 7a and the movable-side bushing soot 11a, for example, the movable-side soot tube grounding flange 12a. It is provided to extend.
- the lower end 19a1 of the movable-side ground shield 19a extends downward by t from the movable-side lower flange 7a2, which is the lower end of the movable-side current transformer mounting cylinder 7a, and the movable-side ground shield 19a.
- the upper side end portion 19a2 of FIG. 5A shows a case where the movable side current transformer mounting cylinder 7a and the movable side bushing soot tube 11a are extended upward by t from the connecting portion of the movable side bushing soot tube 11a, for example, the movable side soot tube grounding flange 12a.
- the dimension of t is set to 35 mm, for example, but is not limited thereto.
- the fixed-side ground shield 19b is disposed in the longitudinal direction in the fixed-side insulator 17b, and the lower-side end portion 19b1 of the fixed-side ground shield 19b is a fixed-side lower flange 7b2 that is the lower end of the fixed-side current transformer mounting cylinder 7b.
- the upper end 19b2 of the fixed-side ground shield 19b extends upward from the connecting portion of the fixed-side current transformer mounting cylinder 7b and the fixed-side bushing soot tube 11b, for example, the fixed-side soot tube grounding flange 12b. It is provided to extend.
- the lower end 19b1 of the fixed-side ground shield 19b is downward by t from the fixed-side lower flange 7b2, which is the lower end of the fixed-side current transformer mounting cylinder 7b, as with the movable-side ground shield 19a.
- the upper end 19b2 of the fixed-side ground shield 19b extends upward by t from the connecting portion between the fixed-side current transformer mounting cylinder 7b and the fixed-side bushing flange 11b, for example, the fixed-side flange grounding flange 12b. The case where it is extended is shown.
- the dimension of t is set to 35 mm, for example, but is not limited thereto.
- the movable-side ground shield support 20a grounds the movable-side insulation support bracket 18a and the movable-side ground shield 19a
- the fixed-side ground shield support 20b grounds the fixed-side insulation support bracket 18b and the fixed-side ground shield 19b. Yes.
- the movable-side electric field relaxation rings 21a and 22a are provided at the lower end 19a1 and the upper end 19a2 of the movable-side ground shield 19a, respectively.
- Fixed side electric field relaxation rings 21b and 22b are provided at the lower end 19b1 and the upper end 19b2 of the fixed ground shield 19b, respectively.
- a movable-side electric field relaxation ring 23a is provided in the vicinity of the movable-side conductor 3 of the circuit breaker 2 on the lower side 17a1 of the movable-side insulator 17a, and the movable-side first main on the upper side 17a2 of the movable-side insulator 17a.
- a movable-side electric field relaxation ring 24a is provided in the vicinity of the connection portion between the circuit conductor 15a and the movable-side second main circuit conductor 16a.
- a fixed-side electric field relaxation ring 23b is provided in the vicinity of the fixed-side conductor portion 4 of the circuit breaker 2 on the lower side 17b1 of the fixed-side insulator 17b, and the fixed-side first main circuit conductor on the upper side 17b2 of the fixed-side insulator 17b.
- a fixed-side electric field relaxation ring 24b is provided in the vicinity of the connecting portion between 15b and the fixed-side second main circuit conductor 16b.
- the fixed side insulator 17b In addition, between the movable side insulator 17a and the movable side cylindrical part 7a1 of the movable side current transformer mounting cylinder 7a, the fixed side insulator 17b and the fixed side cylindrical part 7b1 of the fixed side current transformer attached cylindrical body 7b. Between the movable side insulator 17a, the upper side 17a2 of the movable side insulator 17a, between the movable side second main circuit conductor 16a and the inside of the movable side bushing pipe 11a, the upper side 17b2 of the fixed side insulator 17b, the fixed side second The insulating gas in the ground tank 1 is filled between the main circuit conductor 16b and the inside of the fixed side pipe ground flange 12b.
- the lower side 17a1 extends downward from the lower flange 7a2, which is the lower end of the movable side current transformer mounting cylinder 7a, in the region of the movable side first main circuit conductor 15a located on the movable side current transformer mounting cylinder 7a.
- a movable-side insulator 17a is provided in which the upper side 17a2 extends upward from the connecting portion between the movable-side current transformer mounting cylinder 7a and the movable-side bushing soot 11a.
- the shield 19a is arranged in the longitudinal direction, and the lower end 19a1 of the movable side ground shield 19a extends downward from the movable side lower flange 7a2 which is the lower end of the movable side current transformer mounting cylinder 7a, and the movable side ground
- the upper end portion 19a2 of the shield 19a is extended upward from the connecting portion between the movable side current transformer mounting cylinder 7a and the movable side bushing soot 11a, for example, the movable side soot tube grounding flange 12a. So it is possible to significantly increase the movable insulation performance of the first main circuit conductor 15a, can be suppressed electric field of an intermediate portion of the movable side first main circuit conductor 15a.
- the lower side 17b1 of the fixed-side first main circuit conductor 15b is located below the lower flange 7b2 which is the lower end of the fixed-side current transformer mounting cylinder 7b.
- a fixed-side insulator 17b is provided which extends and extends upward from the connecting portion between the fixed-side current transformer mounting cylinder 7b and the fixed-side bushing soot 11b, and is fixed in the fixed-side insulator 17b.
- the side ground shield 19b is arranged in the longitudinal direction, and the lower side end 19b1 of the fixed side ground shield 19b is extended downward from the fixed side lower flange 7b2 which is the lower end of the fixed side current transformer mounting cylinder 7b and fixed.
- the upper end 19b2 of the side ground shield 19b extends upward from the connecting portion between the fixed side current transformer mounting cylinder 7b and the fixed side bushing pipe 11b, for example, the fixed side pipe ground flange 12b. Since the length is increased, the insulation performance of the fixed-side first main circuit conductor 15b can be remarkably improved, and the electric field at the intermediate portion of the fixed-side first main circuit conductor 15b can be suppressed.
- the insulation performance of the movable first main circuit conductor 15a and the fixed first main circuit conductor 15b can be remarkably enhanced, and the movable first main circuit conductor 15a and the fixed first main circuit conductor 15b can be significantly improved. Since the electric field at the intermediate part of the circuit conductor 15b can be suppressed, the movable side current transformer mounting cylinder 7a and the fixed side current transformer mounting cylinder 7b can be downsized. Further, since the insulation performance can be remarkably improved, the pressure of the insulating gas sealed at a high pressure in the ground tank 1 can be reduced, and the weight of the ground tank 1 can be reduced. As described above, since the insulating performance can be remarkably improved and the size and weight can be reduced, the cost can also be reduced.
- movable-side electric field relaxation rings 21a and 22a are provided at the lower end 19a1 and the upper end 19a2 of the movable-side ground shield 19a, respectively, and the lower-side end 19b1 and the upper-side end 19b2 of the fixed-side ground shield 19b are provided.
- the fixed-side electric field relaxation rings 21b and 22b By providing the fixed-side electric field relaxation rings 21b and 22b, the electric field concentrated on the edge portion of the movable-side lower flange 7a2 and the edge portion of the fixed-side lower flange 7b2, and the edge portion of the movable-side soot pipe ground flange 12a are fixed. It is possible to alleviate the electric field concentrated on the edge portion of the side flange grounding flange 12b.
- the outer diameter of the lower side 17a1 of the movable insulator 17a is configured to be larger than the outer diameter of the central portion of the movable insulator 17a, and the smaller the diameter is, the closer to the movable conductor 3 of the circuit breaker 2 is. By comprising in this way, the insulation performance of the movable side conductor part 3 vicinity of the circuit breaker 2 can be improved.
- the outer diameter dimension of the upper side 17a2 of the movable side insulator 17a is configured to be larger than the outer diameter dimension of the central portion of the movable side insulator 17a, and the movable side first main circuit conductor 15a and the movable side second dimension are set. In this way, the insulation performance near the connecting portion between the movable first main circuit conductor 15a and the movable second main circuit conductor 16a is reduced. Can be increased.
- the outer diameter dimension of the lower side 17b1 of the fixed-side insulator 17b is configured to be larger than the outer diameter dimension of the central portion of the fixed-side insulator 17b, and the smaller the diameter is, the closer to the fixed-side conductor portion 4 of the circuit breaker 2 is. By comprising in this way, the insulation performance of the stationary-side conductor part 4 vicinity of the circuit breaker 2 can be improved.
- the outer diameter dimension of the upper side 17b2 of the fixed-side insulator 17b is configured to be larger than the outer diameter dimension of the central portion of the fixed-side insulator 17b, and the fixed-side first main circuit conductor 15b and the fixed-side second line are fixed. In this way, the insulation performance in the vicinity of the connection portion between the fixed-side first main circuit conductor 15b and the fixed-side second main circuit conductor 16b is reduced. Can be increased.
- a movable-side electric field relaxation ring 23a is provided in the vicinity of the movable-side conductor 3 of the circuit breaker 2 on the lower side 17a1 of the movable-side insulator 17a, and the movable-side first main circuit on the upper side 17a2 of the movable-side insulator 17a.
- a movable-side electric field relaxation ring 24a in the vicinity of the connecting portion between the conductor 15a and the movable-side second main circuit conductor 16a, the movable-side first main circuit conductor 15a and the movable-side conductor portion 3 of the circuit breaker 2 are provided. And the electric field concentrated on the connecting portion between the movable first main circuit conductor 15a and the movable second main circuit conductor 16a can be suppressed.
- a fixed-side electric field relaxation ring 23b is provided in the vicinity of the fixed-side conductor portion 4 of the circuit breaker 2 on the lower side 17b1 of the fixed-side insulator 17b, and the fixed-side first main circuit conductor 15b on the upper side 17b2 of the fixed-side insulator 17b.
- the fixed-side second main circuit conductor 16b are provided in the vicinity of the connecting portion between the fixed-side first main circuit conductor 15b and the fixed-side conductor portion 4 of the circuit breaker 2 by providing a fixed-side electric field relaxation ring 24b. The electric field concentrated on the connecting portion and the electric field concentrated on the connecting portion between the fixed first main circuit conductor 15b and the fixed second main circuit conductor 16b can be suppressed.
- one side of the movable side main circuit conductor 14a is connected to the movable side conductor part 3 of the circuit breaker 2, and the other side is located in one side 11a1 of the movable side bushing tube 11a.
- the movable side first main circuit conductor 15a is composed of the movable side first main circuit conductor 15a and the movable side second main circuit conductor 16a connected to the movable side main circuit terminal 13a.
- the main circuit conductor 14b has one side connected to the fixed side conductor portion 4 of the circuit breaker 2 and the other side fixed to the fixed side first main circuit conductor 15b positioned in the one side 11b1 of the fixed side bushing tube 11b.
- main circuit conductor 15b, fixed-side current transformer mounting cylinder 7b, and fixed-side current transformer 9b can be commonly applied to various types of ground tank 1 as a general-purpose product, and the movable side according to various models
- the movable side second main circuit conductor 16a and the fixed side second main circuit conductor 16b may be selected corresponding to the lengths (heights) of the main circuit conductor 14a and the fixed side main circuit conductor 14b. Therefore, it is possible to obtain a gas insulated switchgear that can cope with the above-described circumstances and is economical.
- This invention is suitable for realizing a gas insulated switchgear that can be miniaturized.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Gas-Insulated Switchgears (AREA)
- Installation Of Bus-Bars (AREA)
Abstract
Description
以下、この発明の実施の形態1を図1~図5に基づいて説明するが、各図において、同一、または相当部材、部位については同一符号を付して説明する。図1はこの発明の実施の形態1に係わるガス絶縁開閉装置を示す側面図である。図2はこの発明の実施の形態1に係わるガス絶縁開閉装置を示す図1のA-A線における断面図である。図3はこの発明の実施の形態1に係わるガス絶縁開閉装置を示す要部拡大断面図である。図4はこの発明の実施の形態1に係わるガス絶縁開閉装置を示す図2のB-B線における要部拡大断面図である。図5はこの発明の実施の形態1に係わるガス絶縁開閉装置を示す図2のC-C線における要部拡大断面図である。
Claims (6)
- 遮断器が収納されるとともに絶縁性ガスが封入された接地タンクと、前記接地タンクの上方に形成された開口部に一方側が取り付けられた変流器取付筒体と、一方側が前記変流器取付筒体の他方側に取り付けられたブッシング碍管と、前記ブッシング碍管と前記変流器取付筒体内に挿通され、一方側が前記遮断器に接続されるとともに他方側が前記ブッシング碍管の他方側に設けられた主回路端子に接続された主回路導体とを備えたガス絶縁開閉装置において、前記主回路導体の前記変流器取付筒体に位置する領域に前記変流器取付筒体の下端より下方向に伸長するとともに前記変流器取付筒体と前記ブッシング碍管との連結部より上方向に伸長して設けられた絶縁物と、前記絶縁物内に配置され、前記変流器取付筒体の下端より下方向に伸長するとともに前記変流器取付筒体と前記ブッシング碍管との連結部より上方向に伸長して設けられた接地シールドとを設けたことを特徴とするガス絶縁開閉装置。
- 遮断器が収納されるとともに絶縁性ガスが封入された接地タンクと、前記接地タンクの上方に形成された開口部に一方側が取り付けられた変流器取付筒体と、一方側が前記変流器取付筒体の他方側に取り付けられたブッシング碍管と、前記ブッシング碍管と前記変流器取付筒体内に挿通され、一方側が前記遮断器に接続されるとともに他方側が前記ブッシング碍管の他方側に設けられた主回路端子に接続された主回路導体とを備えたガス絶縁開閉装置において、前記主回路導体は、一方側が前記遮断器に接続されるとともに他方側が前記ブッシング碍管の一方側内に位置する第1の主回路導体と、前記第1の主回路導体と前記主回路端子に接続される第2の主回路導体とにより構成され、前記第1の主回路導体の前記変流器取付筒体に位置する領域に前記変流器取付筒体の下端より下方向にかつ前記遮断器近傍に伸長するとともに前記第1の主回路導体と前記第2の主回路導体との接続部近傍に伸長して設けられた絶縁物と、前記絶縁物内に配置され、前記変流器取付筒体の下端より下方向に伸長するとともに前記変流器取付筒体と前記ブッシング碍管との連結部より上方向に伸長して設けられた接地シールドとを設けたことを特徴とするガス絶縁開閉装置。
- 前記接地シールドの下方側端部に電界緩和リングを設けたことを特徴とする請求項1または請求項2に記載のガス絶縁開閉装置。
- 前記接地シールドの上方側端部に電界緩和リングを設けたことを特徴とする請求項1または請求項2に記載のガス絶縁開閉装置。
- 前記絶縁物の前記遮断器近傍に電界緩和リングを設けたことを特徴とする請求項2に記載のガス絶縁開閉装置。
- 前記絶縁物の前記第1の主回路導体と前記第2の主回路導体との接続部近傍に電界緩和リングを設けたことを特徴とする請求項2に記載のガス絶縁開閉装置。
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JP2012535468A JP5116907B2 (ja) | 2010-12-17 | 2011-01-28 | ガス絶縁開閉装置 |
DE112011104424.0T DE112011104424B4 (de) | 2010-12-17 | 2011-01-28 | Gasisolierte Schaltanlage |
US13/819,297 US9215825B2 (en) | 2010-12-17 | 2011-01-28 | Gas insulated switchgear |
CN201180047451.5A CN103155316B (zh) | 2010-12-17 | 2011-01-28 | 气体绝缘开关装置 |
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DE112011103758B4 (de) * | 2010-11-12 | 2017-03-23 | Mitsubishi Electric Corp. | Gasisolierte Schalteinrichtung |
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DE112011104424T5 (de) | 2013-10-02 |
CN103155316A (zh) | 2013-06-12 |
US20130155640A1 (en) | 2013-06-20 |
JP5116907B2 (ja) | 2013-01-09 |
DE112011104424B4 (de) | 2019-03-28 |
US9215825B2 (en) | 2015-12-15 |
JPWO2012081264A1 (ja) | 2014-05-22 |
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