CN111048351A - Novel transmission and transformation station device - Google Patents
Novel transmission and transformation station device Download PDFInfo
- Publication number
- CN111048351A CN111048351A CN202010045585.4A CN202010045585A CN111048351A CN 111048351 A CN111048351 A CN 111048351A CN 202010045585 A CN202010045585 A CN 202010045585A CN 111048351 A CN111048351 A CN 111048351A
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- China
- Prior art keywords
- transformer
- vacuum interrupter
- bushing
- interrupter
- operating mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 18
- 230000009466 transformation Effects 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000009471 action Effects 0.000 claims abstract description 5
- 230000005684 electric field Effects 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract 1
- 238000004880 explosion Methods 0.000 description 7
- 239000004020 conductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 241000208199 Buxus sempervirens Species 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
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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
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- 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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
-
- 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
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
-
- 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
- H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
-
- 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
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/66223—Details relating to the sealing of vacuum switch housings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
本发明公开了一种新型输变电站装置，属于输变电设置技术领域，包括低压柜、变压器，低压柜挂靠在变压器一侧，变压器上连接有变压器套管，变压器套管内设有真空灭弧室，真空灭弧室与变压器套管之间填充用于固定真空灭弧室并将真空灭弧室与变压器油隔离的第一绝缘凝胶层；真空灭弧室下端与变压器直联，真空灭弧室上端的拉杆上连接有控制真空灭弧室分/合动作的操动机构。本发明将真空灭弧室设置在变压器套管内，真空灭弧室可频繁开/合高达一万次，解决了传统美式箱变的油箱中装置的油负荷开关不能频繁操作，管式熔断器每经过一次短路电流后都要更换、小电流开断困难的问题。
The invention discloses a novel power transmission and transformation substation device, belonging to the technical field of power transmission and transformation installation, comprising a low-voltage cabinet and a transformer. , the first insulating gel layer is filled between the vacuum interrupter and the transformer bushing for fixing the vacuum interrupter and isolating the vacuum interrupter from the transformer oil; the lower end of the vacuum interrupter is directly connected to the transformer, and the vacuum interrupter An operating mechanism for controlling the opening/closing action of the vacuum interrupter is connected to the pull rod at the upper end of the chamber. The invention sets the vacuum interrupter in the transformer bushing, and the vacuum interrupter can be opened/closed frequently up to 10,000 times, which solves the problem that the oil load switch installed in the oil tank of the traditional American box-type transformer cannot be operated frequently. After a short-circuit current, it must be replaced, and the small current is difficult to break.
Description
Technical Field
The invention belongs to the technical field of power transmission and transformation settings, and particularly relates to a novel power transmission and transformation station device.
Background
The common power transmission and transformation station devices comprise an European box transformer substation and an American box transformer substation, wherein a low-voltage cabinet, a transformer and a high-voltage cabinet are combined in mutually isolated boxes, and the boxes are large in size and large in occupied area.
The American box transformer is characterized in that a low-voltage cabinet is hung on one side of a transformer, an oil type load switch and a tubular fuse are installed in an oil tank of the transformer, line faults are protected, load dispatching is switched, and high-voltage cables directly lead out, so that the size of the American box transformer is greatly reduced compared with that of an European box transformer, the occupied area is reduced by about 30%, and the American box transformer is mostly used in photovoltaic power generation and wind power generation equipment in China. However, the oil load switch of the oil tank device of the American-style tank transformer cannot be frequently operated, the small current is difficult to cut off, the oil quality of the transformer is deteriorated when the transformer is cut off, the insulation level is reduced, the potential danger of explosion and ignition exists, and the tubular fuse in the oil tank needs to be replaced after short-circuit current is passed once, so that the replacement is difficult.
Disclosure of Invention
The invention aims to provide a novel transmission and transformation station device, which solves the problems that an oil load switch arranged in an oil tank of an American box-type transformer cannot be frequently operated, small current is difficult to cut off, the oil quality of a transformer is deteriorated when the transformer is cut off, the insulation level is reduced, more hidden dangers of explosion and ignition exist, and a tubular fuse in the oil tank needs to be replaced after short-circuit current every time, so that the replacement is difficult.
In order to achieve the purpose, the invention adopts the following technical scheme: a novel power transmission and transformation station device comprises a low-voltage cabinet and a transformer, wherein the low-voltage cabinet is hung on one side of the transformer, a transformer sleeve is connected onto the transformer, a vacuum arc-extinguishing chamber is arranged in the transformer sleeve, and a first insulating gel layer used for fixing the vacuum arc-extinguishing chamber and isolating the vacuum arc-extinguishing chamber from transformer oil is filled between the vacuum arc-extinguishing chamber and the transformer sleeve; the lower end of the vacuum arc extinguish chamber is directly connected with the transformer, and the pull rod at the upper end of the vacuum arc extinguish chamber is connected with an operating mechanism for controlling the opening/closing action of the vacuum arc extinguish chamber.
Preferably, vacuum interrupter sets up in the explosion chamber sleeve, and the explosion chamber sleeve pipe setting of installing vacuum interrupter is intraductal at the transformer sleeve, fills the second insulating gel layer that is used for fixed explosion chamber sleeve pipe and keeps apart vacuum interrupter and transformer oil between explosion chamber sleeve pipe and the transformer sleeve pipe.
Preferably, an electric field voltage-sharing device is arranged at the direct connection position of the vacuum arc-extinguishing chamber and the transformer.
Preferably, the lower end of the transformer bushing is provided with an electronic voltage/current transformer.
Preferably, the operating mechanism is a permanent magnet operating mechanism or a spring operating mechanism.
Preferably, the arc extinguish chamber sleeve is a capacitor sleeve wound by epoxy glass cloth or an epoxy resin sleeve cast by epoxy resin.
Compared with the prior art, the invention has the beneficial effects that:
1. the vacuum arc-extinguishing chamber is arranged in the transformer bushing, the short-circuit fault protection and load distribution transfer of the power transmission and distribution line are realized by the dividing/closing operation of the vacuum arc-extinguishing chamber by the operating mechanism, the vacuum arc-extinguishing chamber can be opened/closed frequently for ten thousand times, and the American box is changed for about 10 times, so that the problems that an oil load switch of the oil tank device of the traditional American box transformer cannot be operated frequently, a tubular fuse needs to be replaced after short-circuit current every time, and the small current is difficult to cut off are solved. In addition, the vacuum arc-extinguishing chamber is sealed in the insulating sleeve, is filled with insulating gel and is isolated from transformer oil, so that the opening/closing of the vacuum arc-extinguishing chamber does not influence the oil quality, and the vacuum arc-extinguishing chamber sleeve are sealed in the transformer sleeve as a whole, so that the vacuum arc-extinguishing chamber has the advantages of moisture resistance, fire resistance and explosion resistance, and the safety of a power system is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is an enlarged view of part A of FIG. 2;
FIG. 4 is a schematic structural diagram of an electric field voltage equalizing mechanism according to a second embodiment;
FIG. 5 is a schematic structural diagram of a third embodiment of the present invention;
in the figure: the low-voltage cabinet 100, the transformer 200, the transformer bushing 300, the vacuum arc-extinguishing chamber 400, the first insulating gel layer 500, the electronic voltage/current transformer 600, the permanent magnet operating mechanism 700, the controller 800, the guide rod 900, the spring operating mechanism 1000, the operating rod 1001, the crank arm 1002, the electric field voltage-sharing device 1100, the high-voltage conductor 1101, the zero screen 1102, the shielding layer 1103, the voltage dividing screen 1104 and the insulating cylinder 1105.
Detailed Description
In order that those skilled in the art will better understand the present invention, the invention will now be further described with reference to the following specific embodiments:
as shown in fig. 1, a novel power transmission and transformation station device comprises a low voltage cabinet 100 and a transformer 200, wherein the low voltage cabinet 100 is hung on one side of the transformer 200, the transformer 200 is connected with a transformer bushing 300, a vacuum arc-extinguishing chamber 400 is arranged in the transformer bushing 300, and a first insulating gel layer 500 for fixing the vacuum arc-extinguishing chamber 400 and isolating the vacuum arc-extinguishing chamber 400 from transformer oil is filled between the vacuum arc-extinguishing chamber 400 and the transformer bushing 300; the lower end of the vacuum arc extinguish chamber 400 is directly connected with the transformer 200, the lower end of the transformer bushing 300 is provided with the electronic voltage/current transformer 600, the pull rod at the upper end of the vacuum arc extinguish chamber 400 is connected with an operating mechanism for controlling the opening/closing action of the vacuum arc extinguish chamber 400, the operating mechanism is a permanent magnet operating mechanism or a spring operating mechanism, the operating mechanism in the embodiment is a permanent magnet operating mechanism 700 arranged at the top of the transformer bushing 300, the transformer 200 is provided with a controller 800 for controlling the permanent magnet operating mechanism, and the permanent magnet operating mechanism 700 is in the conventional design. The transformer bushing 300 is provided with a guide 900 for connecting a high voltage line, which can be directly connected to an overhead transmission line.
Example two
The second embodiment is basically the same as the first embodiment in technical solution, and the difference is that: as shown in fig. 2-4, an electric field voltage-sharing device 1100 is disposed at a direct connection between the vacuum interrupter 400 and the transformer 200, the electric field voltage-sharing device 1100 includes an insulating cylinder 1105, a high-voltage conductor 1101, a zero screen 1102, a shielding layer 1103 and a plurality of partial pressure screens 1104, the zero screen 1102, the shielding layer 1103 and the partial pressure screens 1104 are all made of conductive materials, the shielding layer 1103 is a conductive cylinder sleeved outside the high-voltage conductor 1101, the shielding layer 1103 is sleeved with a plurality of partial pressure screens 1104, the shielding layer 1103 and the plurality of partial pressure screens 1104 are coaxial, the length of the plurality of partial pressure screens 1104 decreases from inner to outer in sequence to form a date core shape, the shielding layer 1103 and the partial pressure screens 1104 are separated by insulating layers, the zero screen 1102 is sleeved outside the partial pressure screens 1104, the zero screen 1102 is cylindrical, the inner wall of the zero screen 1102 is connected with the outermost partial pressure screens 1104 by the insulating layers, the outer wall of, the middle part of the outer wall of the insulating cylinder 1105 is provided with a connecting flange 1200, the insulating cylinder 1105 is connected with the transformer 200 through the connecting flange 1200, and the bottom end of the transformer bushing 300 is connected with the flange of the insulating cylinder 1105.
In this embodiment, the multi-layer voltage dividing screen 1104 divides voltage layer by layer, the high voltage on the high-voltage conductor 1101 is gradually reduced, and the voltage is zero when reaching the zero screen 1102, the voltage dividing screens 1104 and the voltage dividing screens 1104 are connected with the zero screen 1102 or the shielding layer 1103 through insulating layers to bear the voltage between layers, when the vacuum interrupter 400 is in different static states or different action states, the electric field voltage equalizing mechanism 1100 can perform high voltage equalizing operation, thereby greatly improving the overall voltage withstand level of the transformer bushing 300, and solving the problem that the overall voltage withstand is not too high after the vacuum interrupter 400 is additionally arranged in the transformer bushing 300.
EXAMPLE III
The third embodiment is basically the same as the first embodiment in technical solution, and the difference is that: as shown in fig. 5, the operating mechanism in this embodiment is a spring operating mechanism 1000, the spring operating mechanism 1000 is connected to a connecting lever 1002 through an operating rod 1001, and the connecting lever is connected to a pull rod at the upper end of the vacuum interrupter 400. The spring operating mechanism is of conventional design.
Example four
The fourth embodiment is basically the same as the first embodiment in technical solution, and the difference is that: the vacuum interrupter 400 in this embodiment is disposed in an interrupter sleeve, the interrupter sleeve in which the vacuum interrupter 400 is installed is disposed in a transformer sleeve 300, and a second insulating gel layer for fixing the interrupter sleeve and isolating the vacuum interrupter 400 from transformer oil is filled between the interrupter sleeve and the transformer sleeve 300. The arc extinguish chamber sleeve is a capacitor sleeve wound by epoxy glass cloth or an epoxy resin sleeve cast by epoxy resin. The arc extinguish chamber sleeve in the embodiment is a capacitor sleeve wound by epoxy glass cloth.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010045585.4A CN111048351A (en) | 2020-01-16 | 2020-01-16 | Novel transmission and transformation station device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010045585.4A CN111048351A (en) | 2020-01-16 | 2020-01-16 | Novel transmission and transformation station device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111048351A true CN111048351A (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010045585.4A Pending CN111048351A (en) | 2020-01-16 | 2020-01-16 | Novel transmission and transformation station device |
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| CN (1) | CN111048351A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552428A (en) * | 2020-11-25 | 2022-05-27 | 安徽金瑞开关电气有限公司 | Mobile substation |
| CN114640070A (en) * | 2020-12-15 | 2022-06-17 | 北京瑞恒新源投资有限公司 | Closed Combination Sleeve |
| WO2023070779A1 (en) * | 2021-10-27 | 2023-05-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Vacuum arc-extinguishing chamber test system for transformer on-load tap-changer and method therefor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1113549A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
| WO2001091151A1 (en) * | 2000-05-23 | 2001-11-29 | Abb Power T & D Company Inc. | Combination of a vacuum interruption device and oil-filled transformer |
| CN102646546A (en) * | 2012-05-20 | 2012-08-22 | 西安兴汇电力科技有限公司 | Intelligent self-energy-obtaining vacuum breaker |
| CN204155709U (en) * | 2014-10-10 | 2015-02-11 | 云南耀邦达电力工程有限公司 | A kind of intelligent transformer with phase selection function circuit breaker |
| CN205752000U (en) * | 2016-06-22 | 2016-11-30 | 北京瑞恒新源投资有限公司 | Bushing type combined electrical apparatus |
| CN205752006U (en) * | 2016-06-22 | 2016-11-30 | 北京瑞恒新源投资有限公司 | The operating mechanism of bushing type combined electrical apparatus is arranged |
| WO2017148159A1 (en) * | 2016-02-29 | 2017-09-08 | 北京瑞恒新源投资有限公司 | Large-capacitance insulation core body, high-voltage electrical apparatus and multi-functional high-voltage bushing |
| CN211265344U (en) * | 2020-01-16 | 2020-08-14 | 安徽金瑞开关电气有限公司 | Novel transmission and transformation station device |
-
2020
- 2020-01-16 CN CN202010045585.4A patent/CN111048351A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1113549A1 (en) * | 1999-12-30 | 2001-07-04 | ABB T&D Technologies Ltd. | Electric substation |
| WO2001091151A1 (en) * | 2000-05-23 | 2001-11-29 | Abb Power T & D Company Inc. | Combination of a vacuum interruption device and oil-filled transformer |
| CN102646546A (en) * | 2012-05-20 | 2012-08-22 | 西安兴汇电力科技有限公司 | Intelligent self-energy-obtaining vacuum breaker |
| CN204155709U (en) * | 2014-10-10 | 2015-02-11 | 云南耀邦达电力工程有限公司 | A kind of intelligent transformer with phase selection function circuit breaker |
| WO2017148159A1 (en) * | 2016-02-29 | 2017-09-08 | 北京瑞恒新源投资有限公司 | Large-capacitance insulation core body, high-voltage electrical apparatus and multi-functional high-voltage bushing |
| CN205752000U (en) * | 2016-06-22 | 2016-11-30 | 北京瑞恒新源投资有限公司 | Bushing type combined electrical apparatus |
| CN205752006U (en) * | 2016-06-22 | 2016-11-30 | 北京瑞恒新源投资有限公司 | The operating mechanism of bushing type combined electrical apparatus is arranged |
| CN211265344U (en) * | 2020-01-16 | 2020-08-14 | 安徽金瑞开关电气有限公司 | Novel transmission and transformation station device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552428A (en) * | 2020-11-25 | 2022-05-27 | 安徽金瑞开关电气有限公司 | Mobile substation |
| CN114640070A (en) * | 2020-12-15 | 2022-06-17 | 北京瑞恒新源投资有限公司 | Closed Combination Sleeve |
| CN114640070B (en) * | 2020-12-15 | 2025-03-11 | 北京瑞恒新源投资有限公司 | Closed combination casing |
| WO2023070779A1 (en) * | 2021-10-27 | 2023-05-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Vacuum arc-extinguishing chamber test system for transformer on-load tap-changer and method therefor |
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