CN108493981B - Double-joint connecting structure between converter transformer and converter valve - Google Patents
Double-joint connecting structure between converter transformer and converter valve Download PDFInfo
- Publication number
- CN108493981B CN108493981B CN201810347395.0A CN201810347395A CN108493981B CN 108493981 B CN108493981 B CN 108493981B CN 201810347395 A CN201810347395 A CN 201810347395A CN 108493981 B CN108493981 B CN 108493981B
- Authority
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- China
- Prior art keywords
- converter
- rotary joint
- joint fitting
- converter valve
- transformer
- 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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Links
- 239000000725 suspension Substances 0.000 claims abstract description 45
- 239000012212 insulator Substances 0.000 claims abstract description 39
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 6
- 239000010931 gold Substances 0.000 description 6
- 229910052737 gold Inorganic materials 0.000 description 6
- 230000005684 electric field Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
The invention provides a double-joint connecting structure between converter transformers and converter valves, which comprises the converter transformers and the converter valves, wherein each converter transformer is respectively connected with an independent converter valve in a conductive manner, a first rotary joint fitting, a first suspension insulator, a second rotary joint fitting and a second suspension insulator are arranged between at least one converter transformer and the corresponding converter valve, opposite ends of the first suspension insulator are respectively connected with a suspension bracket and the first rotary joint fitting, opposite ends of the second suspension insulator are respectively connected with the suspension bracket and the second rotary joint fitting, and at least one converter transformer is sequentially connected with the corresponding first rotary joint fitting, the second rotary joint fitting and the converter valve in a conductive manner. According to the invention, a movable connection structure capable of rotating relatively is formed between the converter valve and the converter transformer through the first rotary joint fitting and the second rotary joint fitting, so that the earthquake displacement of the converter valve tower is reduced or even offset, and the earthquake resistance of the converter valve tower is improved.
Description
Technical Field
The invention relates to the field of connection structure design of converter transformers and converter valves, in particular to a double-joint connection structure between a converter transformer and a converter valve.
Background
The valve side sleeve of the converter transformer (abbreviated as 'converter transformer', the same applies below) is directly inserted into the valve hall, after star connection is completed at the end part of the valve side post insulator through a 6 split flexible conductor in the valve hall, the valve side post insulator is connected to the connecting terminal of the corresponding converter valve through a telescopic tube bus. For an extra-high voltage converter station in a conventional low-seismic-intensity area, due to small horizontal acceleration of an earthquake, the corresponding swing range of the converter valve under the earthquake working condition is small, and the earthquake displacement between the connecting terminal of the converter valve and the valve side post insulator is counteracted mainly by virtue of the movable range of the telescopic pipe nut.
However, for extra-high voltage converter stations in areas with high seismic intensity, such as areas with seismic intensity not lower than 8 degrees, the displacement of the converter valve under the seismic working condition is larger due to the high site seismic intensity. For example, through actual simulation analysis and calculation, for an 800kV extra-high voltage converter station in a high seismic intensity area, the seismic swing amplitude of a wiring terminal of a high-end 800kV converter valve of the extra-high voltage converter station may reach 1.5m, and obviously, the conventional telescopic pipe female connection scheme cannot meet the seismic requirements. In addition, because the body weight of the 800kV converter valve is 4-5t, if a conventional telescopic pipe female connection scheme is adopted, the seismic displacement of the converter valve is limited due to the movable quantity of the telescopic pipe female, and the connection terminal and the post insulator of the converter valve can be damaged due to the seismic stress of the converter valve.
Disclosure of Invention
The invention aims to solve the technical problems that: aiming at the problems existing in the prior art, the double-joint connecting structure between the converter transformer and the converter valve is provided, and the anti-seismic performance of the converter valve is improved.
The technical problems to be solved by the invention are realized by adopting the following technical scheme: the utility model provides a double-joint connection structure between converter transformer and converter valve, includes converter transformer and converter valve, forms electrically conductive connection between each converter transformer and the independent converter valve respectively, sets up first rotary joint gold utensil, first suspension insulator and second rotary joint gold utensil and second suspension insulator between at least one converter transformer and the corresponding converter valve, first suspension insulator opposite ends are connected with suspension frame, first rotary joint gold utensil respectively, second suspension insulator opposite ends are connected with suspension frame, second rotary joint gold utensil respectively, form electrically conductive connection in proper order between at least one converter transformer and corresponding first rotary joint gold utensil, second rotary joint gold utensil, the converter valve.
Preferably, the first rotary joint fitting and/or the second rotary joint fitting comprise a central shaft, opposite ends of the central shaft are respectively in movable connection with the upper adapter plate and the lower adapter plate in a relative rotation manner, and conductive connection is formed between the upper adapter plate and the lower adapter plate.
Preferably, the central shaft is connected with the connecting lugs.
Preferably, the upper adapter plate and the lower adapter plate are electrically connected through connecting wires with pre-arch structures.
Preferably, the lower adapter plate is connected with the lower pipe bus clamp.
Preferably, the upper adapter plate is connected with the upper pipe bus clamp.
Preferably, the first rotary joint fitting is connected with the first equalizing ring.
Preferably, the second revolute joint hardware fitting is connected with a second equalizing ring.
Compared with the prior art, the invention has the beneficial effects that: because the first rotary joint fitting, the first suspension insulator, the second rotary joint fitting and the second suspension insulator are arranged between the converter transformer and the corresponding converter valve, the converter transformer and the corresponding first rotary joint fitting, the second rotary joint fitting and the converter valve are sequentially connected in a conductive manner, so that a movable connection structure capable of rotating relatively can be formed between the converter valve and the converter transformer through the first rotary joint fitting and the second rotary joint fitting, and therefore, under an earthquake working condition, earthquake swinging of a converter valve tower in the converter valve in different directions can be converted into rotation actions of the first rotary joint fitting and the second rotary joint fitting, earthquake displacement of the converter valve tower can be well lightened and even offset, and the earthquake resistance of electric equipment such as the converter valve, the converter transformer and the like can be effectively improved.
Drawings
Fig. 1 is a front view of a double-joint connection structure between a converter transformer and a converter valve according to the present invention.
Fig. 2 is a top view of a double-joint connection structure between a converter transformer and a converter valve according to the present invention.
Fig. 3 is a schematic structural view of the first revolute joint hardware or the second revolute joint hardware.
Item label name in figure: 1-converter transformer, 2-upper valve side sleeve, 3-first equalizing ring, 4-first rotating joint fitting, 5-second rotating joint fitting, 6-first pipe nut, 7-second pipe nut, 8-first suspension insulator, 9-second suspension insulator, 10-second equalizing ring, 11-converter valve, 12-suspension bracket, 13-upper post insulator, 14-lower post insulator, 15-lower adapter plate, 16-lower pipe bus-bar clamp, 17-upper pipe bus-bar clamp, 18-connecting suspension lug, 19-upper adapter plate, 20-central shaft, 21-connecting wire, 22-six-split flexible wire, 23-third pipe nut and 24-fourth pipe nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The double-joint connection structure between the converter transformer and the converter valve shown in fig. 1 and 2 mainly comprises a converter transformer 1, a first rotary joint fitting 4, a first suspension insulator 8, a second rotary joint fitting 5, a second suspension insulator 9 and a converter valve 11, wherein each converter transformer 1 is respectively in conductive connection with the independent converter valve 11, and the first rotary joint fitting 4, the first suspension insulator 8, the second rotary joint fitting 5 and the second suspension insulator 9 are arranged between at least one converter transformer 1 and the corresponding converter valve 11. In general, an independent first rotary joint fitting 4, a first suspension insulator 8, and a second rotary joint fitting 5 and a second suspension insulator 9 are provided between each of the 3-phase converter transformers 1 and its corresponding converter valve 11. Opposite ends of the first suspension insulator 8 are respectively connected with the suspension bracket 12 and the first rotary joint fitting 4, and opposite ends of the second suspension insulator 9 are respectively connected with the suspension bracket 12 and the second rotary joint fitting 5. Correspondingly, each converter transformer 1 and the corresponding first rotary joint hardware fitting 4, second rotary joint hardware fitting 5 and converter valve 11 are sequentially connected in a conductive manner.
The first rotary joint fitting 4 and the second rotary joint fitting 5 preferably adopt a structure shown in fig. 3, and mainly comprise a central shaft 20, opposite ends of the central shaft 20 respectively form relative rotary movable connection with an upper adapter plate 19 and a lower adapter plate 15, and the upper adapter plate 19 and the lower adapter plate 15 form conductive connection. Further, the upper interposer 19 and the lower interposer 15 may be electrically connected by a plurality of connection wires 21 with a pre-arch structure. The connecting wires 21 of the pre-arch structure are preferably uniformly distributed around the central axis 20. In order to facilitate the external electrical connection of the first rotary joint hardware fitting 4 and the second rotary joint hardware fitting 5, the lower adapter plate 15 is connected with the lower pipe bus clamp 16, and the upper adapter plate 19 is connected with the upper pipe bus clamp 17. In order to facilitate the mechanical connection between the first revolute joint hardware 4 and the first suspension insulator 8 and between the second revolute joint hardware 5 and the second suspension insulator 9, the central shaft 20 thereof may be connected with the connection lugs 18.
In the above-mentioned double-joint connection structure between the converter transformer and the converter valve, specifically, the converter valve 11 is connected with the suspension bracket 12, one end of the first suspension insulator 8 is connected with the suspension bracket 12, the other end is connected with the connection suspension lug 18 on the first rotary joint fitting 4, one end of the second suspension insulator 9 is connected with the suspension bracket 12, and the other end is connected with the connection suspension lug 18 on the second rotary joint fitting 5. The connecting terminal in the middle of the converter valve 11 is connected with a lower pipe bus clamp 16 in the second rotary joint hardware fitting 5 through a second pipe bus 7, so that a conductive connection is formed between a lower adapter plate 15 in the second rotary joint hardware fitting 5 and the converter valve 11; the upper pipe bus-bar clamp 17 in the second revolute joint hardware fitting 5 is connected with the upper pipe bus-bar clamp 17 in the first revolute joint hardware fitting 4 through a fourth pipe bus-bar 24, the lower pipe bus-bar clamp 16 in the first revolute joint hardware fitting 4 is in conductive connection with a conductive core rod in the upper valve side sleeve 2 through a first pipe bus-bar 6, and the first pipe bus-bar 6 is supported through an upper support insulator 13. Preferably, the ends of the upper valve side sleeve 2 and the upper post insulator 13 are respectively provided with equalizing balls, and the first pipe nut 6 and the conductive core rod inside the upper valve side sleeve 2 are in conductive connection through six-split flexible wires 22, while the lower valve side sleeve in the 3-phase converter transformer 1 is respectively in short connection through a third pipe nut 23, and the third pipe nut 23 is supported through the lower post insulator 14, as shown in fig. 1 and 2.
In order to prevent corona discharge caused by non-uniformity of the electric fields where the first rotary joint fitting 4 and the second rotary joint fitting 5 are located, the upper adapter plate 19 and the lower adapter plate 15 in the first rotary joint fitting 4 may be respectively connected with the first equalizing ring 3, and the upper adapter plate 19 and the lower adapter plate 15 in the second rotary joint fitting 5 may be respectively connected with the second equalizing ring 10, as shown in fig. 1, 2 and 3. By arranging the first equalizing ring 3 and the second equalizing ring 10, the electric field can be uniform, and corona discharge caused by nonuniform electric field can be effectively prevented.
The invention adopts the first rotary joint fitting 4 and the second rotary joint fitting 5 at the same time, and according to the actual condition of the site, the horizontal movement range of +/-50 degrees can be realized through the rotation of the central shaft 20 outside the installation angle of the on-site inlet and outlet pipe bus, and the horizontal distance between the first suspension insulator 8 and the second suspension insulator 9 is preferably 2m. The horizontal double-joint connecting structure is formed by the first rotary joint fitting 4 and the second rotary joint fitting 5, under the earthquake working condition, earthquake swinging of the converter valve 11 in different directions is converted into rotation of the first rotary joint fitting 4 and the second rotary joint fitting 5, so that the horizontal double-joint connecting structure can be compressed or stretched to a certain extent, earthquake displacement of the converter valve 11 is relieved and even offset, the problem of safe and reliable electric connection of the converter valve 11, the converter 1 and other electric equipment in the high earthquake intensity area with overlarge earthquake swing is effectively solved, and the earthquake resistance of the converter valve 11, the converter 1 and other electric equipment is effectively improved.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The utility model provides a double-joint connection structure between converter transformer and converter valve, includes converter transformer (1) and converter valve (11), forms electrically conductive connection, its characterized in that between each converter transformer (1) and independent converter valve (11) respectively: a first rotary joint fitting (4), a first suspension insulator (8), a second rotary joint fitting (5) and a second suspension insulator (9) are arranged between at least one phase change transformer (1) and a corresponding converter valve (11), opposite ends of the first suspension insulator (8) are respectively connected with a suspension bracket (12) and the first rotary joint fitting (4), opposite ends of the second suspension insulator (9) are respectively connected with the suspension bracket (12) and the second rotary joint fitting (5), and conductive connection is formed between the at least one phase change transformer (1) and the corresponding first rotary joint fitting (4), the second rotary joint fitting (5) and the converter valve (11) in sequence;
the first rotary joint fitting (4) and/or the second rotary joint fitting (5) comprise a central shaft (20), opposite ends of the central shaft (20) are respectively in movable connection with an upper adapter plate (19) and a lower adapter plate (15) in a relative rotation mode, and the upper adapter plate (19) and the lower adapter plate (15) are in conductive connection through a connecting wire (21) with a pre-arch structure.
2. The double-joint connection structure between converter transformer and converter valve according to claim 1, characterized in that: the central shaft (20) is connected with the connecting lugs (18).
3. The double-joint connection structure between converter transformer and converter valve according to claim 1, characterized in that: the lower adapter plate (15) is connected with a lower pipe bus clamp (16).
4. The double-joint connection structure between converter transformer and converter valve according to claim 1, characterized in that: the upper adapter plate (19) is connected with the upper pipe bus clamp (17).
5. The double-joint connection structure between a converter transformer and a converter valve according to any one of claims 1 to 4, characterized in that: the first rotary joint fitting (4) is connected with the first equalizing ring (3).
6. The double-joint connection structure between a converter transformer and a converter valve according to any one of claims 1 to 4, characterized in that: the second rotary joint fitting (5) is connected with the second equalizing ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347395.0A CN108493981B (en) | 2018-04-18 | 2018-04-18 | Double-joint connecting structure between converter transformer and converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347395.0A CN108493981B (en) | 2018-04-18 | 2018-04-18 | Double-joint connecting structure between converter transformer and converter valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108493981A CN108493981A (en) | 2018-09-04 |
| CN108493981B true CN108493981B (en) | 2024-03-12 |
Family
ID=63313695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810347395.0A Active CN108493981B (en) | 2018-04-18 | 2018-04-18 | Double-joint connecting structure between converter transformer and converter valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108493981B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3842187A (en) * | 1973-11-28 | 1974-10-15 | Gen Electric | Electric bus with joint for accommodating earthquake-produced motion of parts |
| CN202373931U (en) * | 2011-07-27 | 2012-08-08 | 中国电力工程顾问集团西北电力设计院 | T-joint telescoping fitting capable of adapting to any angle of tubular bus |
| EP2555358A1 (en) * | 2011-08-05 | 2013-02-06 | Tyco Electronics Simel S.A.S. | Telescopic busbar systems |
| CN103296623A (en) * | 2013-05-31 | 2013-09-11 | 国家电网公司 | Tube busbar suspension fitting for converter station valve hall |
| CN203387132U (en) * | 2013-05-27 | 2014-01-08 | 国家电网公司 | Connecting structure of converter station valve hall wall bushing and tubular bus-bar and connecting fitting thereof |
| CN203774718U (en) * | 2014-04-02 | 2014-08-13 | 国家电网公司 | A 800kV direct current wall bushing and current transformer connection support fitting |
| CN206023124U (en) * | 2016-09-30 | 2017-03-15 | 中国南方电网有限责任公司超高压输电公司 | Anti-dizzy type multi-angle pipe mother's connection gold utensil |
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| CN107359573A (en) * | 2017-08-15 | 2017-11-17 | 南方电网科学研究院有限责任公司 | A kind of pipe mother connection gold utensil |
| CN107611890A (en) * | 2017-10-09 | 2018-01-19 | 南方电网科学研究院有限责任公司 | A kind of converter station valve hall has with pipe capital |
| CN107611889A (en) * | 2017-10-09 | 2018-01-19 | 南方电网科学研究院有限责任公司 | A kind of pipe mother corner support gold utensil |
| CN107834477A (en) * | 2017-10-09 | 2018-03-23 | 南方电网科学研究院有限责任公司 | A kind of converter station valve hall has with pipe capital |
| CN207251137U (en) * | 2017-10-09 | 2018-04-17 | 南方电网科学研究院有限责任公司 | A kind of converter station valve hall has with pipe capital |
| CN207251138U (en) * | 2017-10-09 | 2018-04-17 | 南方电网科学研究院有限责任公司 | A kind of converter station valve hall has with pipe capital |
| CN208015199U (en) * | 2018-04-18 | 2018-10-26 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of Converter Station Valve side star group change of current change and converter valve connection structure |
-
2018
- 2018-04-18 CN CN201810347395.0A patent/CN108493981B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3842187A (en) * | 1973-11-28 | 1974-10-15 | Gen Electric | Electric bus with joint for accommodating earthquake-produced motion of parts |
| CN202373931U (en) * | 2011-07-27 | 2012-08-08 | 中国电力工程顾问集团西北电力设计院 | T-joint telescoping fitting capable of adapting to any angle of tubular bus |
| EP2555358A1 (en) * | 2011-08-05 | 2013-02-06 | Tyco Electronics Simel S.A.S. | Telescopic busbar systems |
| CN203387132U (en) * | 2013-05-27 | 2014-01-08 | 国家电网公司 | Connecting structure of converter station valve hall wall bushing and tubular bus-bar and connecting fitting thereof |
| CN103296623A (en) * | 2013-05-31 | 2013-09-11 | 国家电网公司 | Tube busbar suspension fitting for converter station valve hall |
| CN203774718U (en) * | 2014-04-02 | 2014-08-13 | 国家电网公司 | A 800kV direct current wall bushing and current transformer connection support fitting |
| CN206023124U (en) * | 2016-09-30 | 2017-03-15 | 中国南方电网有限责任公司超高压输电公司 | Anti-dizzy type multi-angle pipe mother's connection gold utensil |
| CN206180531U (en) * | 2016-11-23 | 2017-05-17 | 中国电力工程顾问集团中南电力设计院有限公司 | Female T of pipe connects gold utensil with adjustable angle |
| CN107359573A (en) * | 2017-08-15 | 2017-11-17 | 南方电网科学研究院有限责任公司 | A kind of pipe mother connection gold utensil |
| CN107611890A (en) * | 2017-10-09 | 2018-01-19 | 南方电网科学研究院有限责任公司 | A kind of converter station valve hall has with pipe capital |
| CN107611889A (en) * | 2017-10-09 | 2018-01-19 | 南方电网科学研究院有限责任公司 | A kind of pipe mother corner support gold utensil |
| CN107834477A (en) * | 2017-10-09 | 2018-03-23 | 南方电网科学研究院有限责任公司 | A kind of converter station valve hall has with pipe capital |
| CN207251137U (en) * | 2017-10-09 | 2018-04-17 | 南方电网科学研究院有限责任公司 | A kind of converter station valve hall has with pipe capital |
| CN207251138U (en) * | 2017-10-09 | 2018-04-17 | 南方电网科学研究院有限责任公司 | A kind of converter station valve hall has with pipe capital |
| CN208015199U (en) * | 2018-04-18 | 2018-10-26 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of Converter Station Valve side star group change of current change and converter valve connection structure |
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| Publication number | Publication date |
|---|---|
| CN108493981A (en) | 2018-09-04 |
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