CN104485210A - Extra-high voltage converter transformer network side 750kV outgoing line matching structure - Google Patents
Extra-high voltage converter transformer network side 750kV outgoing line matching structure Download PDFInfo
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- CN104485210A CN104485210A CN201410777434.2A CN201410777434A CN104485210A CN 104485210 A CN104485210 A CN 104485210A CN 201410777434 A CN201410777434 A CN 201410777434A CN 104485210 A CN104485210 A CN 104485210A
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- dais
- case lid
- lead
- upper flange
- out wire
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Abstract
The invention provides an extra-high voltage converter transformer network side 750kV outgoing line matching structure which is simple in structure, good in insulating property and convenient to transparent. The extra-high voltage converter transformer network side 750kV outgoing line matching structure comprises a box cover higher than the edge of a converter transformer box, a flange on the box cover, and an inclined lifting seat and a straight lifting seat which are connected sequentially on the flange on the box cover; the edge of the box cover is inclined downwards and is connected to the edge of the converter transformer box; the flange on the box cover is arranged on the inclined part of the box cover; the top end of the inclined lifting seat is connected horizontally with the straight lifting seat, the bottom end of the inclined lifting seat is arranged obliquely and is connected to the flange on the box cover; the diameter of the straight lifting seat is smaller than that of the top end of the inclined lifting seat, and the diameter of the top end of the inclined lifting seat is larger than that of the bottom end; the side, close to the box cover, of the bottom end is higher than the side close to the edge of the converter transformer box; the side wall, close to the edge of the converter transformer box, of the inclined lifting seat is arranged obliquely outwards; the network side outgoing line is lead out vertically from the flange on the box cover, the end of the network side outgoing line is lower than a transportation outer limit outline; the network side outgoing line is connected to a network side sleeve or external lead by a voltage sharing device arranged in the inclined lifting seat.
Description
Technical field
The present invention relates to converter transformer technical scheme field, be specially a kind of UHV net side 750kV lead-out wire supporting structure.
Background technology
Along with the develop rapidly of HVDC Transmission Technology, China's electric energy transfer scope increases day by day, current domestic existing converter transformer voltage on line side is up to 500kV, and the DC transmission engineering in some areas needs to enter 750kV circuit at net side joint, therefore UHV net side insulation level need meet the requirement of 750kV, according to China's HVDC Converter Stations integral layout and converter transformer own structural characteristics, the mode that 750kV AC transformer lead-out wire is drawn from tank wall as compared with the past can not meet this actual requirement, the change of current need be become net side 750kV lead-out wire to draw from fuel tank case lid.And realize this lead-out mode, solve two aspect problems, on the one hand because its insulation level raises, insulation distance requires to increase, on the other hand, the change of current becomes overall dimension and limits by transportation condition, and fuel tank internal space increases limited, and the supporting structure of therefore inventing a kind of UHV net side 750kV lead-out wire is the effective way overcome the above problems.
Summary of the invention
For problems of the prior art, the invention provides a kind of structure simple, good insulating, be convenient to the UHV net side 750kV lead-out wire supporting structure of transporting.
The present invention is achieved through the following technical solutions:
A kind of UHV net side of the present invention 750kV lead-out wire supporting structure, comprises and exceeds the change of current and become case along the case lid arranged, case lid upper flange, and the oblique ascension dais be connected in turn on case lid upper flange and go straight up to dais; Case lid edge is downward-sloping becomes case along being connected with the change of current, and case lid upper flange is arranged on the sloping portion of case lid; The upper horizontal of oblique ascension dais with go straight up to dais and be connected, bottom is inclined to set and is connected with case lid upper flange; The diameter of going straight up to dais is less than oblique ascension dais top end diameter, and oblique ascension dais top end diameter is greater than the diameter of bottom, and bottom becomes the side on case edge higher than the close change of current near the side of case lid, and oblique ascension dais becomes the outward-dipping setting of sidewall on case edge near the change of current; Net side lead-out wire is vertically drawn from case lid upper flange, and its termination height limits profile lower than transport is outer; Net side lead-out wire is connected with net side sleeve pipe or external lead wire by the pressure-equalizing device be arranged in oblique ascension dais.
Preferably, lower shading ring is obliquely installed at case lid upper flange and oblique ascension dais connecting portion; Lower shading ring is fixedly installed on inside case lid upper flange by support, and it is outside is coatedly provided with insulating barrier.
Preferably, oblique ascension dais with go straight up to dais connecting portion shading ring be set; Upper shading ring is fixedly installed on oblique ascension dais top inner side, and it is outside is coatedly provided with insulating barrier.
Further, the top of oblique ascension dais with go straight up to dais, bottom and case lid upper flange are connected and fixed respectively by bolt.
Preferably, net side lead-out wire is coordinated to be provided with the transport cover that can dismantle from the termination of case lid upper flange; After transport cover is connected with case lid upper flange, its height limits profile lower than transport is outer, and net lead-out wire termination, side is placed in transport cover.
Preferably, the present invention also comprises the balance pipe being set in net lead-out wire outside, side; Coated insulation paper outside balance pipe.
Compared with prior art, the present invention has following useful technique effect:
The present invention becomes case along arranging by case lid being exceeded the change of current, it is made to be the arch that middle part exceeds, thus transport is outer limits its maximum width along being highly positioned over the change of current can be become case, and provide the gradient of increase for case lid outlet position, make on the one hand pressure-equalizing device away from part over the ground, on case lid, have enough case lid upper flange installing spaces to be connected with rising seat on the other hand.The oblique ascension dais be connected with case lid is obliquely installed, lower end is made to meet fuel tank case lid width requirement, upper end meets the electrical distance requirement of pressure-equalizing device, the vibrational power flow special due to oblique ascension dais is connected with position, its top end diameter is greater than bottom diameter, makes its barrel maximum diameter be greater than barrel diametric requirements in 750kV uniform electric field, oblique ascension dais is arranged barrel diameter relatively little and can meet 750kV insulation distance go straight up to dais, thus can reduce by oil mass, reduce its cost and deadweight; Can expand the insulation distance of lead-in wire under not changing the change of current to become the prerequisite of size originally, meet the requirement of electric field strength insulation margin in 750kV oil; And the termination of netting side lead-out wire balance pipe is arranged lower than transport outer limit profile, the restriction of movement requirement therefore can also be met; By netting the direct connection net side sleeve pipe of side lead-in wire or utilizing external lead wire, wire length is increased and connects net side sleeve pipe again, realize flexible connection and the layout of net side lead-in wire.
Further, by arranging with the connecting portion of going straight up to dais the shading ring being coated with insulating barrier at oblique ascension dais upper and lower side and case lid upper flange respectively, wedge angle position is shielded, can avoid in formation high field area, wedge angle position, improve the security reliability that it runs, meet the requirement of product insulation property.
Further, by oblique ascension dais upper and lower side and case lid upper flange with go straight up to the bolt adopted respectively between dais and be connected, while its efficiency of assembling of raising, quick-detachment when ensure that transport and reliable connection when using, improve the convenience of useful life and maintenance.
Further; utilize the transport cover increasing cooperation on case lid; by oblique ascension dais with go straight up to dais dismounting separately transport during transport, the movement requirement that the net side 750kV change of current becomes can be met, and the structural intergrity of catch net side lead-in wire and the reliability of follow-up connection.
Further, by the setting of the outside balance pipe that goes between to 750kV net side, uniform electric field, ensures its electric property and insulating requirements, and its structure is simple, safe and reliable to operation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of structure of the present invention.
Fig. 2 is the transport figure after removing supporting structure of the present invention
In figure: 1 is net side sleeve pipe or external lead wire, and 2 is pressure-equalizing device, and 3 is upper shading ring, 4 is oblique ascension dais, 5 is lower shading ring, and 6 is change of current change case edge, and 7 is lead-in wire balance pipe, 8 is core clamping, 9 is case lid upper flange, and 10 is case lid, and 11 limit profile for transport is outer, 12 is transport cover, and 13 for going straight up to dais.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, and the explanation of the invention is not limited.
A kind of UHV net side of the present invention 750kV lead-out wire supporting structure, as shown in Figure 1, it comprises and exceeds the change of current and become the case lid 10 that case arranges along 6, case lid upper flange 9, and the oblique ascension dais 4 be connected in turn on case lid upper flange 9 and go straight up to dais 13; Case lid 10 edge is downward-sloping to be become case with the change of current and is connected along 6, and case lid upper flange 9 is arranged on the sloping portion of case lid 10; The upper horizontal of oblique ascension dais 4 with go straight up to dais 13 and be connected, bottom is inclined to set and is connected with case lid upper flange 9; The diameter of going straight up to dais 13 is less than oblique ascension dais 4 top end diameter, oblique ascension dais 4 top end diameter is greater than the diameter of bottom, and bottom becomes the side of case along 6 near the side of case lid 10 higher than near the change of current, oblique ascension dais 4 becomes the sidewall outward-dipping setting of case along 6 near the change of current; Net side lead-out wire is vertically drawn from case lid upper flange 9, and its termination height is lower than transport outer limit profile 11; Net side lead-out wire is connected with net side sleeve pipe or external lead wire 1 by the pressure-equalizing device 2 be arranged in oblique ascension dais 4.
Wherein, as shown in Figure 1, lower shading ring 5 is obliquely installed at case lid upper flange 9 and oblique ascension dais 4 connecting portion; Lower shading ring 5 is fixedly installed on inside case lid upper flange 9 by support, and it is outside is coatedly provided with insulating barrier.Oblique ascension dais 4 with go straight up to dais 13 connecting portion shading ring 3 be set; Upper shading ring 3 is fixedly installed on oblique ascension dais 4 top inner side, and it is outside is coatedly provided with insulating barrier.In this preferred embodiment, the top of oblique ascension dais 4 with go straight up to dais 13, bottom and case lid upper flange 9 are connected and fixed respectively by bolt.
As shown in Figure 2, net side lead-out wire is coordinated to be provided with the transport cover 12 that can dismantle from the termination of case lid upper flange 9; After transport cover 12 is connected with case lid upper flange 9, its height is lower than transport outer limit profile 11, and net lead-out wire termination, side is placed in transport cover 12.In this preferred embodiment, at the outside sheathed balance pipe 7 of net side lead-out wire; Coated insulation paper outside balance pipe 7.
Concrete, as shown in Figure 1, change of current change case net side 750kV extra-high voltage converter being become fuel tank is underlying along 6, case lid 10 is made to be designed to arch, at net, lead-out wire place, side increases the case lid gradient, can weld enough large flange 9, case lid upper flange 9 does not interfere with core clamping 8; Net side lead-in wire adopts balance pipe 7 structure, outer attached insulating barrier, draws in the flange 9 that arch case lid gradient larger part is arranged; Not isometrical up big and down small biassed fabric is arranged to by oblique ascension dais 4 fixing on case lid 10, pressure-equalizing device 2 sets within it, pressure-equalizing device 2 can be made to avoid relative position narrow regions in oil on the one hand, reduce pressure-equalizing device 2 external electronic field, the flexible lead-in wire connected mode that the change of current becomes different internal structure can be met on the other hand; At case lid 10 and oblique ascension dais 4 connecting portion, lower shading ring 5 is set, lower shading ring 5 inclined design, outsourcing insulation, shape is special, and it is welded with support, be fixed on case lid flange 9, oblique ascension dais is arranged diameter relatively little go straight up to dais 13, upper shading ring 3 is placed at both coupling flange places, outer attached insulating barrier, inside the upper flange being fixed in oblique ascension dais 6, ensure the reliability of dielectric strength; 750kV lead-in wire increases length by net side sleeve pipe or external lead wire 1, and forming wire length increases part, realizes the flexible connection of lead-in wire.From case lid upper flange 9 by oblique ascension dais 4 and go straight up to dais 13 above and remove when the change of current becomes transport, as shown in Figure 2, load onto transport cover 12, within making it be in transport outer limit profile 11, to solve electric field Insulation Problems and the transportation problem of UHV net side 750kV product.
Claims (6)
1. a UHV net side 750kV lead-out wire supporting structure, it is characterized in that, comprise the case lid (10) exceeding change of current change case and arrange along (6), case lid upper flange (9), and the oblique ascension dais (4) be connected in turn on case lid upper flange (9) and go straight up to dais (13); The downward-sloping case that becomes with the change of current in case lid (10) edge is connected along (6), and case lid upper flange (9) is arranged on the sloping portion of case lid (10); The upper horizontal of oblique ascension dais (4) with go straight up to dais (13) and be connected, bottom is inclined to set and is connected with case lid upper flange (9); The diameter of going straight up to dais (13) is less than oblique ascension dais (4) top end diameter, oblique ascension dais (4) top end diameter is greater than the diameter of bottom, and bottom becomes the side of case along (6) near the side of case lid (10) higher than near the change of current, oblique ascension dais (4) becomes the sidewall outward-dipping setting of case along (6) near the change of current; Net side lead-out wire is vertically drawn from case lid upper flange (9), and its termination height limits profile (11) lower than transport is outer; Net side lead-out wire is connected with net side sleeve pipe or external lead wire (1) by the pressure-equalizing device (2) be arranged in oblique ascension dais (4).
2. a kind of UHV net side according to claim 1 750kV lead-out wire supporting structure, it is characterized in that, be obliquely installed lower shading ring (5) at case lid upper flange (9) and oblique ascension dais (4) connecting portion; Lower shading ring (5) is fixedly installed on case lid upper flange (9) inner side by support, and it is outside is coatedly provided with insulating barrier.
3. a kind of UHV net side according to claim 1 750kV lead-out wire supporting structure, is characterized in that, oblique ascension dais (4) with go straight up to dais (13) connecting portion shading ring (3) be set; Upper shading ring (3) is fixedly installed on oblique ascension dais (4) top inner side, and it is outside is coatedly provided with insulating barrier.
4. a kind of UHV net side 750kV lead-out wire supporting structure according to claim 1 or 3, it is characterized in that, the top of oblique ascension dais (4) with go straight up to dais (13), bottom and case lid upper flange (9) are connected and fixed respectively by bolt.
5. a kind of UHV net side according to claim 1 750kV lead-out wire supporting structure, is characterized in that, coordinates net side lead-out wire to be provided with the transport cover (12) that can dismantle from the termination of case lid upper flange (9); After transport cover (12) is connected with case lid upper flange (9), its height limits profile (11) lower than transport is outer, and net lead-out wire termination, side is placed in transport cover (12).
6. a kind of UHV net side according to claim 1 750kV lead-out wire supporting structure, is characterized in that, also comprises the balance pipe (7) being set in net lead-out wire outside, side; Balance pipe (7) outside coated insulation paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777434.2A CN104485210B (en) | 2014-12-15 | 2014-12-15 | A kind of UHV net side 750kV lead-out wire supporting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777434.2A CN104485210B (en) | 2014-12-15 | 2014-12-15 | A kind of UHV net side 750kV lead-out wire supporting structure |
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| Publication Number | Publication Date |
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| CN104485210A true CN104485210A (en) | 2015-04-01 |
| CN104485210B CN104485210B (en) | 2016-06-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107240478A (en) * | 2017-06-05 | 2017-10-10 | 国家电网公司 | A kind of extra-high voltage direct-current engineering converter transformer bushings support meanss and method for arranging |
| CN107644730A (en) * | 2016-07-21 | 2018-01-30 | 特变电工沈阳变压器集团有限公司 | A kind of 750kV converter power transformers net side outgoing line device |
| CN116682653A (en) * | 2023-06-12 | 2023-09-01 | 山东泰开变压器有限公司 | High-voltage wire outlet structure of 330kV power transformer |
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| CN202189649U (en) * | 2011-03-11 | 2012-04-11 | 中国西电电气股份有限公司 | Conversion current transformer device |
| CN202905403U (en) * | 2012-11-15 | 2013-04-24 | 常州市英中电气有限公司 | Outgoing line device on network side of extra-high voltage converter transformer |
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| JP2771505B2 (en) * | 1996-03-14 | 1998-07-02 | 株式会社日立製作所 | DC bushing |
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| CN201562549U (en) * | 2009-11-03 | 2010-08-25 | 保定天威集团有限公司 | Extra-high tension converter transformer three-column parallel-connection network side line-outgoing device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN107644730A (en) * | 2016-07-21 | 2018-01-30 | 特变电工沈阳变压器集团有限公司 | A kind of 750kV converter power transformers net side outgoing line device |
| CN107644730B (en) * | 2016-07-21 | 2019-03-29 | 特变电工沈阳变压器集团有限公司 | A kind of 750kV converter power transformer net side outgoing line device |
| CN107240478A (en) * | 2017-06-05 | 2017-10-10 | 国家电网公司 | A kind of extra-high voltage direct-current engineering converter transformer bushings support meanss and method for arranging |
| CN107240478B (en) * | 2017-06-05 | 2023-07-25 | 国家电网公司 | Bushing supporting device and arrangement method for extra-high voltage direct current engineering converter transformer |
| CN116682653A (en) * | 2023-06-12 | 2023-09-01 | 山东泰开变压器有限公司 | High-voltage wire outlet structure of 330kV power transformer |
| CN116682653B (en) * | 2023-06-12 | 2024-06-28 | 山东泰开变压器有限公司 | High-voltage wire outlet structure of 330kV power transformer |
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| Publication number | Publication date |
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| CN104485210B (en) | 2016-06-22 |
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Inventor after: Li Hongqiao Inventor after: Li Jinzhong Inventor after: Han Xiancai Inventor after: Wang Tao Inventor after: Zhang Shuqi Inventor after: Shi Yanying Inventor after: Sun Gang Inventor after: Liu Yan Inventor after: She Haizhi Inventor before: Li Hongqiao Inventor before: Wang Tao Inventor before: Shi Yanying Inventor before: Liu Yan Inventor before: She Haizhi |
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Effective date of registration: 20170406 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 |
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