CN102543390A - AC (Alternating Current) 750kV end part outgoing line structure of ultrahigh-voltage converter transformer - Google Patents
AC (Alternating Current) 750kV end part outgoing line structure of ultrahigh-voltage converter transformer Download PDFInfo
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- CN102543390A CN102543390A CN201210046324XA CN201210046324A CN102543390A CN 102543390 A CN102543390 A CN 102543390A CN 201210046324X A CN201210046324X A CN 201210046324XA CN 201210046324 A CN201210046324 A CN 201210046324A CN 102543390 A CN102543390 A CN 102543390A
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Abstract
The invention provides an AC (Alternating Current) 750kV end part outgoing line structure of an ultrahigh-voltage converter transformer. The AC 750kV end part line outgoing structure is of a voltage equalizing tube structure, insulating wadding packs the voltage equalizing tube structure, the thickness of the insulating wadding is 30-50mm, 3-5 insulating forming pieces are arranged outside the insulating wadding, and an oil duct is filled between every two insulating forming pieces so that the voltage equalizing tube structure is surrounded layer by layer; and an insulating baffle and a clamp shield are arranged on one side of an outgoing line close to a clamp. The clamp shield is one of key parts of an end part outgoing line and is made of an insulating paper board, carbon paper, copper braided wires and the like, and the upper end of the clamp shield is turned over the clamp in a fitting manner and is fixed firmly with the clamp through an insulating screw rod. The AC 750kV end part line outgoing structure disclosed by the invention reinforces insulation and shield, thus the end part outgoing line meets requirements on field strength, the reliability of insulating strength is ensured, and a structure problem that the 750kV end part outgoing line is arranged on one side of the ultrahigh-voltage converter transformer is solved.
Description
Technical field
The invention belongs to converter transformer technical scheme field, relate to a kind of ultra high voltage converter transformer and exchange 750kV end outlet structure.
Background technology
Domestic existing converter transformer voltage on line side is up to 500kV; Along with the scope of electric power development and electric energy transfer increases day by day; Some regional DC transmission engineerings need insert the 750kV circuit in AC side, so the insulation level of extra-high voltage direct-current converter transformer net side need satisfy the requirement of 750kV.Because the raising of voltage on line side is had higher requirement to the insulation and the net side outlet structure of extra-high voltage direct-current converter transformer.
To voltage on line side is the extra-high voltage direct-current converter transformer of 750kV level; Through analysis of electric field to 500kV level net side outlet structure; Designed the brand-new end outlet structure that is applicable to 750kV on the basis of design being optimized; This structure can satisfy the insulating requirements of 750kV, adopts the design completion of the extra-high voltage direct-current converter transformer of 750kV that reliable assurance is provided for voltage on line side.
Summary of the invention
The invention provides a kind of ultra high voltage converter transformer and exchange 750kV end outlet structure; Be applicable to that voltage on line side is the extra-high voltage direct-current converter transformer of 750kV level; Can satisfy the insulating requirements of 750kV, reliable assurance is provided for voltage on line side adopts the design of the extra-high voltage direct-current converter transformer of 750kV.
The technical scheme that the present invention adopted is:
A kind of extra-high voltage converter power transformer exchanges 750kV end outlet structure; Comprise the balance pipe that is connected with transformer interior loop head end, be coated on transformer folder periphery and connect into the support and the clamp of an integral body with the fixing folder shielding of transformer folder and with folder shielding and balance pipe; Wherein, Said support comprises and is four independent supports that two rows are provided with, and arranges up and down between the support to be connected and fixed by connector to form entire bracket, is provided with through hole on each independent support; Be penetrated with insulation blanket stud in the through hole on last row's the independent support; The other end of this insulation blanket stud is fixedlyed connected with the folder shielding, is penetrated with clamp in the through hole of following row's independent support, and the other end of this clamp is fixedlyed connected with balance pipe; Like this, the folder shielding forms an integral body by insulation blanket stud, support and clamp and balance pipe; In addition, further be fixed with insulation barrier on the support, the bearing of trend of this insulation barrier is provided with the bearing of trend of insulation blanket stud is vertical.
As the preferred embodiments of the present invention, the pressing plate of said transformer and core insulation are provided with the slit of arc, at this slit internal fixation insulating board are arranged;
As the preferred embodiments of the present invention, said folder shielding is mainly processed by insulating board, carbon paper and copper litz wire material;
As the preferred embodiments of the present invention, the upper end of said folder shielding kept docile with folder after turning down folder;
As the preferred embodiments of the present invention, said balance pipe periphery is coated with insulation wadding and insulation molding part successively;
As the preferred embodiments of the present invention, the thickness of said insulation wadding is 30～50mm;
As the preferred embodiments of the present invention, said insulation molding part has the 3-5 layer, every forms oil duct between two-layer;
As the preferred embodiments of the present invention, said insulation molding part is formed by the insulating board that insulation paper pulp is processed, and the profile of its contour structures and balance pipe is consistent.
Ultra high voltage converter transformer of the present invention exchanges 750kV end outlet structure and has the following advantages at least: 750kV net side end outlet structure of the present invention is drawn outlet through balance pipe; In order to guarantee enough insulation margins; The folder shielding is installed on core clamping; Through insulation blanket stud folder shielding and insulation barrier etc. are fixed on the folder, features simple structure is prone to row, has solved the structure problem of ultra high voltage converter transformer net side employing 750kV end outlet.
Description of drawings
Fig. 1 is the sketch map that ultra high voltage converter transformer of the present invention exchanges 750kV end outlet structure.
Wherein, the corresponding relation of label and element is as shown in the table among the figure:
| 1 | The folder shielding | 2 | |
| 3 | Insulating |
4 | The |
| 5 | The insulation wadding | 6 | |
| 7 | |
8 | Insulation blanket stud |
| 9 | Support | ? | ? |
Embodiment
Below in conjunction with accompanying drawing ultra high voltage converter transformer of the present invention is exchanged 750kV end outlet structure and does detailed description:
See also shown in Figure 1; Ultra high voltage converter transformer of the present invention exchanges 750kV end outlet structure and comprises the balance pipe 6 that is connected with transformer interior loop head end; The periphery of this balance pipe 6 is coated with the insulation wadding 5 that thickness is 30～50mm, and the periphery of this insulation wadding 5 is coated with 3-5 layer insulation molding part 7 successively, forms oil duct between every two-layer insulation molding part 7; Said insulation molding part 7 is formed by the insulating board that insulation paper pulp is processed, and the profile of its contour structures and balance pipe 6 is consistent.In addition, this outlet structure further comprises folder shielding 1, insulation barrier 2, insulation blanket stud 8, support 9, folder hoop 4, and insulating board 3.Said folder shielding 1 is coated on transformer folder periphery and is fixedly connected with the transformer folder, and this folder shielding 1 is mainly processed by insulating board, carbon paper and copper litz wire material; The upper end of this folder shielding 1 kept docile with folder after turning down folder; Said support 9 comprises four independent supports 9 that are the two rows setting; Arrange up and down between the support 9 and form entire bracket, wherein, be provided with through hole on each independent support through the connector connection is fixing; Be penetrated with insulation blanket stud 8 in the through hole on last row's the independent support; The other end of this insulation blanket stud 8 is fixedly connected with folder shielding 1, is penetrated with folder hoop 4 in the through hole of following row's independent support, and the other end of this folder hoop 4 passes insulation molding part 7, insulation wadding 5 and balance pipe 6 successively; Like this, folder shielding 1 forms an integral body through insulation blanket stud 8, support 9 and folder hoop 4 with balance pipe.In addition, in order to increase the electric insulation distance of transformer, said insulation barrier 2 is inserted on the support vertically, and in other words, said insulation barrier 2 is fixedly mounted on the support 9, and vertical setting of bearing of trend of the bearing of trend of insulation barrier 2 and insulation blanket stud 8; The pressing plate of said transformer and core insulation are provided with the slit of arc, and said insulating board 3 is inserted in this slit, to increase the electric insulation distance of transformer.
750kV net side end outlet structure of the present invention adopts the balance pipe structure; Balance pipe outsourcing insulation wadding; The thickness of this insulation wadding is 30mm～50mm, places 3-5 road insulation molding part again, is filled by oil duct between the two-layer insulation molding part; In layer balance pipe is surrounded, be sidelong near folder in outlet and put insulation barrier and folder shielding.The folder shielding is one of critical component of end outlet, and it is processed by materials such as insulating board, carbon paper, copper litz wires, and the upper end turned down folder and kept docile with folder, and was fixed through insulation blanket stud and folder.For the stability that guarantees to lift one's head, lift one's head the place in the upper end and will lift one's head fixing with wire clamp.Through reinforced insulation and shielding, make the end outlet satisfy the requirement of field intensity, and guarantee the reliability of dielectric strength.This technology has solved the structure problem of ultra high voltage converter transformer net side employing 750kV end outlet.
750kV net side end outlet structure is drawn outlet through balance pipe; In order to guarantee enough insulation margins; The folder shielding is installed on core clamping; Through insulation blanket stud folder shielding and insulation barrier etc. are fixed on the folder, the folder shielding is distinctive in the 750kV net side end outlet structure, also is the parts of most critical in the outlet structure.In order to guarantee to lift one's head the stability of locating balance pipe, it is fixing to adopt wire clamp to lift one's head, and fixes through support and folder.
This 750kV net side end outlet structure is simple and easy to do, has solved the structure problem of ultra high voltage converter transformer net side employing 750kV end outlet.
The above is merely one embodiment of the present invention; It or not whole or unique execution mode; The conversion of any equivalence that those of ordinary skills take technical scheme of the present invention through reading specification of the present invention is claim of the present invention and contains.
Claims (8)
1. a ultra high voltage converter transformer exchanges 750kV end outlet structure; It is characterized in that: the support (9) that comprises the balance pipe (6) that is connected with transformer interior loop head end, is coated on transformer folder periphery and connects into an integral body with the fixing folder shielding (1) of transformer folder and with folder shielding (1) and balance pipe binds round (4) with folder; Wherein, Said support (9) comprises four the independent supports (9) that are the two rows setting, arranges up and down between the support (9) and forms entire bracket through the connector connection is fixing, is provided with through hole on each independent support; Be penetrated with insulation blanket stud (8) in the hole on last row's the independent support; The other end of this insulation blanket stud (8) is fixedly connected with folder shielding (1), is penetrated with folder hoop (4) in the through hole of following row's independent support, and the other end of this folder hoop (4) is fixedly connected with balance pipe (6); Like this, folder shielding (1) forms an integral body through insulation blanket stud (8), support (9) and folder hoop (4) and balance pipe (6); In addition, further be fixed with insulation barrier (2) on the support, the vertical setting of bearing of trend of the bearing of trend of this insulation barrier (2) and insulation blanket stud (8).
2. a kind of ultra high voltage converter transformer as claimed in claim 1 exchanges 750kV end outlet structure, and it is characterized in that: the pressing plate of said transformer and core insulation are provided with the slit of arc, at this slit internal fixation insulating board (3) are arranged.
3. according to claim 1 or claim 2 a kind of ultra high voltage converter transformer exchanges 750kV end outlet structure, and it is characterized in that: said folder shielding (1) is mainly processed by insulating board, carbon paper and copper litz wire material.
4. a kind of ultra high voltage converter transformer as claimed in claim 1 exchanges 750kV end outlet structure, it is characterized in that: the upper end of said folder shielding (1) kept docile with folder after turning down folder.
5. according to claim 1 or claim 2 a kind of ultra high voltage converter transformer exchanges 750kV end outlet structure, and it is characterized in that: said balance pipe (6) periphery is coated with insulation wadding (5) and insulation molding part (7) successively.
6. a kind of ultra high voltage converter transformer as claimed in claim 5 exchanges 750kV end outlet structure, and it is characterized in that: the thickness of said insulation wadding is 30～50mm.
7. exchange 750kV end outlet structures like claim 5 or 6 described a kind of ultra high voltage converter transformers, it is characterized in that: said insulation molding part have the 3-5 layer, forms oil duct between whenever two-layer.
8. a kind of ultra high voltage converter transformer as claimed in claim 7 exchanges 750kV end outlet structure; It is characterized in that: said insulation molding part (7) is formed by the insulating board that insulation paper pulp is processed, and the profile of its contour structures and balance pipe (6) is consistent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210046324.XA CN102543390B (en) | 2012-02-27 | 2012-02-27 | AC (Alternating Current) 750kV end part outgoing line structure of ultrahigh-voltage converter transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210046324.XA CN102543390B (en) | 2012-02-27 | 2012-02-27 | AC (Alternating Current) 750kV end part outgoing line structure of ultrahigh-voltage converter transformer |
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| CN102543390A true CN102543390A (en) | 2012-07-04 |
| CN102543390B CN102543390B (en) | 2014-06-04 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559987A (en) * | 2013-11-15 | 2014-02-05 | 山东电力设备有限公司 | Outgoing line device for extra-high voltage transformer |
| CN103996513A (en) * | 2014-05-14 | 2014-08-20 | 中国能源建设集团广东省电力设计研究院 | Drawing hole device of converter transformer |
| CN106098319A (en) * | 2016-08-04 | 2016-11-09 | 深圳供电局有限公司 | A kind of Axial-running Out wire type transformator |
| CN106531421A (en) * | 2015-09-14 | 2017-03-22 | 特变电工沈阳变压器集团有限公司 | Converter transformer for 750kV accessed to network side |
| CN106558404A (en) * | 2015-09-24 | 2017-04-05 | 特变电工衡阳变压器有限公司 | The outlet structure and high-impedance transformer of high-impedance transformer |
| CN108667060A (en) * | 2018-04-18 | 2018-10-16 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of method that current conversion station improves change of current valve tower operational reliability |
| CN109712790A (en) * | 2017-10-25 | 2019-05-03 | 特变电工沈阳变压器集团有限公司 | A kind of converter power transformer valve outgoing line device |
| CN110911132A (en) * | 2018-09-18 | 2020-03-24 | 特变电工沈阳变压器集团有限公司 | Valve side wire outlet device of extra-high voltage converter transformer |
| WO2020082930A1 (en) * | 2018-10-24 | 2020-04-30 | 山东电力设备有限公司 | High-voltage outlet structure of 750 kv shunt reactor |
| CN111145992A (en) * | 2020-01-02 | 2020-05-12 | 蔡燕旋 | Power transformer outgoing line lead insulation assembly |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115917679A (en) * | 2020-06-19 | 2023-04-04 | 日立能源瑞士股份公司 | Bushing shield system and use thereof in an outlet insulation system of a high-voltage transformer |
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| CN202034186U (en) * | 2010-12-30 | 2011-11-09 | 保定天威集团有限公司 | Magnetic shielding structure for iron core clamping member of transformer |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559987A (en) * | 2013-11-15 | 2014-02-05 | 山东电力设备有限公司 | Outgoing line device for extra-high voltage transformer |
| CN103559987B (en) * | 2013-11-15 | 2016-06-08 | 山东电力设备有限公司 | A kind of extra-high voltage transformer outgoing line device |
| CN103996513A (en) * | 2014-05-14 | 2014-08-20 | 中国能源建设集团广东省电力设计研究院 | Drawing hole device of converter transformer |
| CN103996513B (en) * | 2014-05-14 | 2016-08-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Converter power transformer towing pad device |
| CN106531421B (en) * | 2015-09-14 | 2018-05-11 | 特变电工沈阳变压器集团有限公司 | A kind of net side accesses 750kV converter power transformers |
| CN106531421A (en) * | 2015-09-14 | 2017-03-22 | 特变电工沈阳变压器集团有限公司 | Converter transformer for 750kV accessed to network side |
| CN106558404A (en) * | 2015-09-24 | 2017-04-05 | 特变电工衡阳变压器有限公司 | The outlet structure and high-impedance transformer of high-impedance transformer |
| CN106558404B (en) * | 2015-09-24 | 2018-11-20 | 特变电工衡阳变压器有限公司 | The outlet structure and high-impedance transformer of high-impedance transformer |
| CN106098319A (en) * | 2016-08-04 | 2016-11-09 | 深圳供电局有限公司 | A kind of Axial-running Out wire type transformator |
| CN109712790A (en) * | 2017-10-25 | 2019-05-03 | 特变电工沈阳变压器集团有限公司 | A kind of converter power transformer valve outgoing line device |
| CN108667060A (en) * | 2018-04-18 | 2018-10-16 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of method that current conversion station improves change of current valve tower operational reliability |
| CN110911132A (en) * | 2018-09-18 | 2020-03-24 | 特变电工沈阳变压器集团有限公司 | Valve side wire outlet device of extra-high voltage converter transformer |
| WO2020082930A1 (en) * | 2018-10-24 | 2020-04-30 | 山东电力设备有限公司 | High-voltage outlet structure of 750 kv shunt reactor |
| CN111145992A (en) * | 2020-01-02 | 2020-05-12 | 蔡燕旋 | Power transformer outgoing line lead insulation assembly |
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Inventor after: Fu Chuanlong Inventor after: Liu Yan Inventor after: Li Jinzhong Inventor after: Han Xiancai Inventor after: Shuai Yuanming Inventor after: Wang Xiaoning Inventor after: Zhao Yongjin Inventor after: Sun Gang Inventor after: Shi Yanying Inventor after: Sun Jiantao Inventor before: Fu Chuanlong Inventor before: Shuai Yuanming Inventor before: Zhao Yongjin Inventor before: Shi Yanying Inventor before: Liu Yan |
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Effective date of registration: 20170407 Address after: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee after: China XD Electronic Corporation Patentee after: China Electric Power Research Institute Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: China XD Electronic Corporation |