CN109545522A - 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer - Google Patents
110kV high-power high voltage converter plant oil immersed type variable-frequency transformer Download PDFInfo
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- CN109545522A CN109545522A CN201910090799.0A CN201910090799A CN109545522A CN 109545522 A CN109545522 A CN 109545522A CN 201910090799 A CN201910090799 A CN 201910090799A CN 109545522 A CN109545522 A CN 109545522A
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- coil
- voltage
- transformer
- frequency transformer
- cushion block
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- 239000010773 plant oil Substances 0.000 title claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 43
- 230000033228 biological regulation Effects 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000010363 phase shift Effects 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 8
- 238000011161 development Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000004804 winding Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
Abstract
The present invention provides a kind of 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer, including iron core and and the coil that is wound on iron core；Primary side voltage is 110kV, and secondary side voltage is 1.55kV；The coil includes 110kV high pressure voltage regulation coil, 110kV high-tension coil and the low-voltage coil of successively coiling from the inside to the outside；110kV high-tension coil end is equipped with high-pressure electrostatic plate, and electrostatic sheild is arranged between 110kV high pressure voltage regulation coil and iron core.It further include the pressing device of transformer body, pressing device includes the cushion block of two truncated cone-shapeds, is separately fixed at the both ends of body pressing plate, and cushion block upper end is equipped with groove, the both ends of the folder web of transformer are inserted into respectively in the groove of two cushion blocks, and folder web is pressed on body pressing plate by cushion block.Can be directly from grid side by electric (110kV), the maintenance amount at the scene of not only also reducing the expenditure of construction for substantially reducing total system, this is also the direction of such transformer development.
Description
Technical field
The present invention relates to oil immersed type variable-frequency transformer technical field, in particular to a kind of 110kV high-power high voltage frequency conversion dress
It sets with oil immersed type variable-frequency transformer.
Background technique
An important technology in Medium Voltage Variable Frequency Speed Regulation Technology is multiple rectifying technology, it will be more using isolating transformer
A low-voltage module is superimposed (series connection) and forms High voltage output, is mainly made of multiple power cells and control unit, Mei Gegong
Rate unit is powered by a three-phase windings of multi-winding isolation transformer, its secondary coil of the isolating transformer of this Multiple coil is mutual
Mutually there are a phase difference, realize input multiplex, thus can eliminate pollution of the harmonic wave to power grid of each unit generation, this every
It is indispensable critical elements in high-voltage frequency converter from transformer, manufacturing technology is also this perfect harmony high-pressure frequency-conversion
One of the technological maheup of device speed regulation device.
China " West-east Gas engineering is an important content of the grand strategy of development of the West Regions, is China's western region
Natural gas is conveyed to eastern region, it connects the market of western resource and east, for pushing China's economic development,
Significant role especially is played in the development of Midwest, simultaneously for China's fuel structure is improved, environment is protected, carries out sustainable
Development has far reaching significance.Natural gas line conveying compressor set is extremely urgent with high power AC frequency conversion speed-adjusting system demand,
Demand-expected hundreds covers such compressor set high power AC frequency conversion speed-adjusting system, uses as high-power high voltage converter plant
Oil immersed type variable-frequency transformer, demand is equally urgent.
As shown in Figure 1, oil immersed type rectifier transformer used in the high power AC frequency conversion speed-adjusting system of country's operation at present
Device primary voltage is all 10kV voltage class, although relatively common using this voltage class, but user also needs in use site
10kV could be reduced to network voltage and carry out using this not only increases by configuring a step-down transformer and required corollary equipment
Expenditure of construction, also increases user to the maintenance workload of equipment, as shown in Fig. 2, if such transformer can be directly from electricity
The expenditure of construction for substantially reducing total system not only can also be reduced live maintenance amount by electric (110kV) by net side, this
It is the direction of such transformer development.
Transformer uses low-pressure side phase shift, and this kind of transformer pulse number is more, usually all in 36 pulse waves or more, therefore becomes
Depressor low-pressure side winding quantity is more, and generally all more than 6 windings, previous such high voltage side of transformer is mostly 10kV, but is used
Family net side primary voltage is mostly 110kV, and such user just needs to increase the step-down transformer of a 110kV voltage class, if
Operating voltage needed for 110kV voltage is directly reduced to user's frequency converter, in this way by substantially reduce user expenditure of construction and
Maintenance workload.
Summary of the invention
In order to solve the problems, such as described in background technique, the present invention provides a kind of 110kV high-power high voltage converter plant oil
Immersion variable-frequency transformer can will not only substantially reduce the expenditure of construction of total system directly from grid side by electric (110kV)
The maintenance amount at the scene of reducing, this is also the direction of such transformer development.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer, the variable-frequency transformer includes iron
Core and and the coil that is wound on iron core；The variable-frequency transformer further includes the pressing device of transformer body, transformer
Folder web is pressed on body pressing plate by pressing device.
The variable-frequency transformer primary side voltage is 110kV, and secondary side voltage is 1.55kV；The coil include by
It is interior to successively 110kV high pressure voltage regulation coil, 110kV high-tension coil and the low-voltage coil of coiling outside；110kV high-tension coil end is set
There is high-pressure electrostatic plate, electrostatic sheild is set between 110kV high pressure voltage regulation coil and iron core.
The pressing device includes the cushion block of two truncated cone-shapeds, is separately fixed at the both ends of body pressing plate, cushion block upper end
Portion is equipped with groove, and the both ends of the folder web of transformer are inserted into respectively in the groove of two cushion blocks, and folder web passes through cushion block pressure
On body pressing plate.
The low-voltage coil includes the low-voltage coil of multiple and different phase shift angles, the phase shift angle includes -20 ° ,+
10°、-10°、+20°、0°、30°。
Fixed plate and fixing glue are additionally provided on the cushion block of the pressing device, fixed plate is fixed on cushion block by fixing glue
On, folder web is fixed in the outside of folder web.
The 110kV high-tension coil uses and is entangled with continous way axial outlet wire mode.
The 110kV high pressure voltage regulation coil uses eight spiral way axial outlet wire modes.
Compared with prior art, the beneficial effects of the present invention are:
1, not only the expenditure of construction for substantially reducing total system can also be subtracted directly from grid side by electric (110kV)
The maintenance amount at few scene, this is also the direction of such transformer development；
2,110kV high-pressure frequency-conversion is at home and abroad belonged to oil immersed type rectifier transformer and being applied for the first time；110kV high-pressure frequency-conversion oil
Immersion rectifier transformer reduces the expenditure of construction of system, reduces occupation area of equipment；110kV high-pressure frequency-conversion is rectified with oil immersed type
Transformer can reduce transformer noload losses 19.6% in substation, load loss 28%；
3, since low-voltage coil quantity is more, wiring is complicated, in order to facilitate low-voltage coil wiring, transformer coil arrangement mode
It is from inside to outside 110kV voltage regulation coil, 110kV high-tension coil, low-voltage coil；
4,110kV electric field strength is larger, therefore high-tension coil (is entangled with continous way axial direction using continous way axial outlet wire is entangled with
Outlet is known in this field), end static electrification plate；
5, electrostatic sheild is placed between high pressure voltage regulation coil and iron core, high pressure voltage regulation coil uses eight spiral way axial outlet wires
(eight spiral way axial outlet wires are known in this field), enhances transformer station high-voltage side bus reliability；
6, the design of body compressing structure eliminates nail pressing bolt, nail pressing nut and nail pressing washer, by original area compared with
Small nail pressing bolt and nail pressing washer are changed to biggish cushion block, are compressed by folder web, are positioned with fixing glue；Body pressing force
It is adjusted without using nail pressing bolt, after the area increase from flexible to guarantee cushion block using adjustment cushion block and coil, active force
There is folder web to undertake, original to be converted into compression situation by curved situation, structural strength is sufficiently large, which is better than conventional junction
Structure.
Detailed description of the invention
Fig. 1 is the 110kV high-power high voltage converter plant voltage transformer system operation figure of background technique；
Fig. 2 is 110kV high-power high voltage converter plant voltage transformer system operation figure of the invention；
Fig. 3 is 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer body layout drawing of the invention；
Fig. 4 is 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer high-tension coil and low pressure of the invention
Winding wiring figure；
Fig. 5 is the body compressing structure main view of the prior art；
Fig. 6 is the body compressing structure side view of the prior art；
Fig. 7 is body compressing structure main view of the invention；
Fig. 8 is body compressing structure side view of the invention.
Wherein: 1- iron core 2-110kV high pressure voltage regulation coil 3-110kV high-tension coil 4- low-voltage coil 5- electrostatic sheild
6- high-pressure electrostatic plate 7- shields 8- body pressing plate 9- folder web 10- nail pressing washer 11- nail pressing 12- nail pressing nut 13-
Nail pressing supporting plate 14- compresses cushion block 15- fixing glue 16- fixed plate.
Specific embodiment
Specific embodiment provided by the invention is described in detail below.
As shown in Fig. 2, a kind of 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer, the frequency conversion becomes
Depressor primary side voltage is 110kV, and secondary side voltage is 1.55kV.
As shown in figure 3, the variable-frequency transformer includes iron core 1 and and the coil that is wound on iron core 1.The coil
Including successively 110kV high pressure voltage regulation coil 2,110kV high-tension coil 3 and the low-voltage coil 4 of coiling from the inside to the outside；110kV high pressure
3 end of coil is equipped with high-pressure electrostatic plate 6, and electrostatic sheild 5 is arranged between 110kV high pressure voltage regulation coil 2 and iron core 1.
As shown in figure 4, be 4 wiring diagram of 110kV high-tension coil 3 and low-voltage coil, the low-voltage coil 4 include it is multiple not
With the low-voltage coil of phase shift angle, the phase shift angle includes -20 ° ,+10 °, -10 ° ,+20 °, 0 °, 30 °.Low-voltage coil 4
The connection type of basic winding and Phase shift winding is set according to phase shift angle.The 110kV high-tension coil 3 uses and is entangled with continous way
Axial outlet wire mode.The 110kV high pressure voltage regulation coil 2 uses eight spiral way axial outlet wire modes.It is entangled with continous way axis
It is transformer technology field common knowledge to outlet method and eight spiral way axial outlet wire modes, no longer attached drawing indicates here.
Also, in multiple low-voltage coils being arranged above and below in Fig. 3, in order to make each winding impedance of multiple low-voltage coils
Close to equal, balancing transformer output loading, increase transformer station high-voltage side bus reliability；It can also distinguish between the upper and lower layer winding of adjustment to lead
Line line gauge from top to bottom successively successively decreases the conducting wire line gauge of multiple low-voltage coils 4 from top to bottom arranged 2-3%.
As viewed in figures 5-8, the variable-frequency transformer further includes the pressing device of transformer body.The folder abdomen of transformer
Plate 9 is pressed on body pressing plate 8 by pressing device.
As seen in figs. 5-6, it is the body compressing structure figure of the prior art, nail pressing supporting plate 13, dress is welded on folder web 9
Timing adjusts the size of body pressing force by tightening 11 bolt of nail pressing, locks after compression by nail pressing nut 12.The structure
The disadvantage is that weld seam is more, if control is bad when welding, it is likely to result in rosin joint.Since weld seam is sheared, this structural strength
It is poor, it is likely that biggish deformation occurs and even tears.11 lower end of nail pressing and 10 contact portion full-size of nail pressing washer are pressure
11 cross sections are followed closely, forced area is smaller, unstable, Lack of support.
As Figure 7-8, pressing device of the invention includes the cushion block 14 of two truncated cone-shapeds, is separately fixed at body pressing plate
8 both ends, 11 upper end of cushion block are equipped with groove, and the groove of two cushion blocks 11 is inserted at the both ends of the folder web 6 of transformer respectively
In, folder web 9 is pressed on body pressing plate 8 by cushion block 14.Fixed plate 16 is additionally provided on the cushion block 14 of the pressing device
With fixing glue 15, fixed plate 16 is fixed on cushion block 14 by fixing glue 15, consolidates folder web 9 in the outside of folder web 9
It is fixed.
Above embodiments are implemented under the premise of the technical scheme of the present invention, give detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
Not mentionleting alone bright is conventional method.
Claims (5)
1. a kind of 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer, the variable-frequency transformer includes iron core
And the and coil that is wound on iron core；The variable-frequency transformer further includes the pressing device of transformer body, the folder of transformer
Part web is pressed on body pressing plate by pressing device；
It is characterized in that, the variable-frequency transformer primary side voltage is 110kV, secondary side voltage is 1.55kV；The line
Circle includes successively 110kV high pressure voltage regulation coil, 110kV high-tension coil and the low-voltage coil of coiling from the inside to the outside；110kV high-voltage line
It encloses end and is equipped with high-pressure electrostatic plate, electrostatic sheild is set between 110kV high pressure voltage regulation coil and iron core；
The pressing device includes the cushion block of two truncated cone-shapeds, is separately fixed at the both ends of body pressing plate, and cushion block upper end is set
Fluted, the both ends of the folder web of transformer are inserted into respectively in the groove of two cushion blocks, and folder web is pressed in device by cushion block
On body pressing plate.
2. a kind of 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer according to claim 1, feature
It is, the low-voltage coil includes the low-voltage coil of multiple and different phase shift angles, the phase shift angle includes -20 ° ,+
10°、-10°、+20°、0°、30°。
3. a kind of 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer according to claim 1, feature
It is, fixed plate and fixing glue are additionally provided on the cushion block of the pressing device, and fixed plate is fixed on cushion block by fixing glue,
Folder web is fixed in the outside of folder web.
4. a kind of 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer according to claim 1, feature
It is, the 110kV high-tension coil uses and is entangled with continous way axial outlet wire mode.
5. a kind of 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer according to claim 1, feature
It is, the 110kV high pressure voltage regulation coil uses eight spiral way axial outlet wire modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090799.0A CN109545522B (en) | 2019-01-30 | 2019-01-30 | Oil-immersed variable-frequency transformer for 110kV high-power high-voltage variable-frequency device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090799.0A CN109545522B (en) | 2019-01-30 | 2019-01-30 | Oil-immersed variable-frequency transformer for 110kV high-power high-voltage variable-frequency device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109545522A true CN109545522A (en) | 2019-03-29 |
| CN109545522B CN109545522B (en) | 2024-03-29 |
Family
ID=65838800
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910090799.0A Active CN109545522B (en) | 2019-01-30 | 2019-01-30 | Oil-immersed variable-frequency transformer for 110kV high-power high-voltage variable-frequency device |
Country Status (1)
| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968993A (en) * | 2010-07-16 | 2011-02-09 | 江苏上能变压器有限公司 | 220 kilovolt grade low-voltage winding split on-load voltage-regulating wind power transformer |
| CN101968994A (en) * | 2010-07-16 | 2011-02-09 | 江苏上能变压器有限公司 | Double-ring on-load tap changer with ultrahigh impedance of 110 kV |
| CN102543400A (en) * | 2011-12-23 | 2012-07-04 | 中国西电电气股份有限公司 | Low-voltage regulation coil device of traction transformer |
| CN102664541A (en) * | 2012-05-09 | 2012-09-12 | 广西柳州特种变压器有限责任公司 | Energy-saving-type rectification system |
| CN202736664U (en) * | 2012-07-27 | 2013-02-13 | 中国西电电气股份有限公司 | High-current low-voltage coil for controlling temperature rise of hot point and transformer with same |
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| CN203799818U (en) * | 2014-04-30 | 2014-08-27 | 山东达驰电气有限公司 | Pressing block structure for body of large transformer |
| CN104779043A (en) * | 2015-04-14 | 2015-07-15 | 保定天威集团特变电气有限公司 | 220 kV de-icing rectifier transformer |
| CN209199746U (en) * | 2019-01-30 | 2019-08-02 | 中石化石油工程设计有限公司青岛分公司 | 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer |
-
2019
- 2019-01-30 CN CN201910090799.0A patent/CN109545522B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968993A (en) * | 2010-07-16 | 2011-02-09 | 江苏上能变压器有限公司 | 220 kilovolt grade low-voltage winding split on-load voltage-regulating wind power transformer |
| CN101968994A (en) * | 2010-07-16 | 2011-02-09 | 江苏上能变压器有限公司 | Double-ring on-load tap changer with ultrahigh impedance of 110 kV |
| CN102543400A (en) * | 2011-12-23 | 2012-07-04 | 中国西电电气股份有限公司 | Low-voltage regulation coil device of traction transformer |
| CN102664541A (en) * | 2012-05-09 | 2012-09-12 | 广西柳州特种变压器有限责任公司 | Energy-saving-type rectification system |
| CN202816595U (en) * | 2012-07-24 | 2013-03-20 | 江苏天翔变压器有限公司 | High-insulation transformer |
| CN202736664U (en) * | 2012-07-27 | 2013-02-13 | 中国西电电气股份有限公司 | High-current low-voltage coil for controlling temperature rise of hot point and transformer with same |
| CN103413665A (en) * | 2013-08-16 | 2013-11-27 | 辽宁华冶集团发展有限公司 | High-power high-voltage frequency conversion oil-immersed rectifier transformer |
| CN203799818U (en) * | 2014-04-30 | 2014-08-27 | 山东达驰电气有限公司 | Pressing block structure for body of large transformer |
| CN104779043A (en) * | 2015-04-14 | 2015-07-15 | 保定天威集团特变电气有限公司 | 220 kV de-icing rectifier transformer |
| CN209199746U (en) * | 2019-01-30 | 2019-08-02 | 中石化石油工程设计有限公司青岛分公司 | 110kV high-power high voltage converter plant oil immersed type variable-frequency transformer |
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| CN109545522B (en) | 2024-03-29 |
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