CN107946048A - 110kV resin casting dry-type transformers - Google Patents
110kV resin casting dry-type transformers Download PDFInfo
- Publication number
- CN107946048A CN107946048A CN201711494450.0A CN201711494450A CN107946048A CN 107946048 A CN107946048 A CN 107946048A CN 201711494450 A CN201711494450 A CN 201711494450A CN 107946048 A CN107946048 A CN 107946048A
- Authority
- CN
- China
- Prior art keywords
- winding
- low pressure
- air flue
- resin
- casting dry
- 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.)
- Pending
Links
- 238000010125 resin casting Methods 0.000 title claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 46
- 230000017525 heat dissipation Effects 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 4
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000003063 flame retardant Substances 0.000 abstract description 3
- 239000013067 intermediate product Substances 0.000 abstract description 3
- -1 while be oil-free Substances 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001429 stepping effect Effects 0.000 description 1
- 230000009466 transformation Effects 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
- H01F27/2823—Wires
-
- 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
- H01F27/2876—Cooling
-
- 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
- H01F27/288—Shielding
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
Abstract
The high-voltage winding and low pressure winding that are formed after sandwich construction through poured with epoxy resin are turned to the present invention relates to a kind of 110kV resin casting dry-type transformers, including by conducting wire；It is characterized in that：The high-voltage winding is using series connection sectional circular core structure, and axial in high-voltage winding sets heat dissipation air flue, and the periphery for the air flue that radiates sets shielded layer；The low pressure winding uses sectional circular core structure, and axial in low pressure winding sets heat dissipation air flue.Not only operational safety performance is high for product of the present invention, anti-short circuit capability is strong, good insulation preformance, impact resistance, will not produce any gas for being unfavorable for environment or other intermediate products, is not only good environment-friendly products, while be oil-free, fire-retardant safety product.With good popularizing application prospect.
Description
Technical field
The present invention relates to a kind of power transformer, especially a kind of 110kV resin casting dry-type transformers.
Background technology
With developing rapidly for electric power modernization, it is excellent as urban electricity supply that 110kV grades of power stations enter urban district
Select one of scheme.In order to ensure the safety of urban construction and resident, 110kV grades of power stations thoroughly realize that non-oil ultra high vacuum system has received much attention.
110kV resin casting dry-type transformers not only solve the fire safety problem of 110kV grades of transformers, but also can overcome power grid
Existing 110kV grades of product anti-short circuit capability poor weakness when short-circuit.Excellent fire protecting performance, and during use it is non-maintaining
Characteristic, from cost of construction, fire-fighting expense, the analysis of operation and maintenance expense is saved, 110kV resin casting dry-type transformers are good to be used and ties up
Guard strip part, a preferable important transformer equipment is provided to establish modern unattended intelligent substation.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided a kind of 110kV resin casting dry-types transformation
Device, simple for structure, anti-short circuit capability is strong, and impact resistance ability is strong, has excellent fire protecting performance.
According to technical solution provided by the invention, the 110kV resin casting dry-type transformers, including turned to by conducting wire
The high-voltage winding and low pressure winding formed after sandwich construction through poured with epoxy resin；It is characterized in that：The high-voltage winding is using string
Join sectional circular core structure, axial in high-voltage winding sets heat dissipation air flue, and the periphery for the air flue that radiates sets shielded layer；It is described low
Pressure winding uses sectional circular core structure, and axial in low pressure winding sets heat dissipation air flue.
Further, the conducting wire includes conductive body and the glass fibre being wound on conductive body outer circumferential surface.
Further, the rigid structure that the high-voltage winding and low pressure winding are conducting wire, resin and glass fibre are formed.
Not only operational safety performance is high for product of the present invention, anti-short circuit capability is strong, good insulation preformance, impact resistance, will not produce
Any gas for being unfavorable for environment or other intermediate products, are not only good environment-friendly products, while are oil-frees, fire-retardant safety
Product.With good popularizing application prospect.
Brief description of the drawings
Fig. 1 is the structure diagram of 110kV resin casting dry-type transformers of the present invention.
Fig. 2 is the A-A sectional views of Fig. 1.
Fig. 3 is combined arrangement schematic diagram with GIS for 110kV resin casting dry-type transformers of the present invention.
Description of reference numerals：1- glass fibres, 2- shielded layers, 3- heat dissipations air flue, 4- conducting wires.
Embodiment
With reference to specific attached drawing, the invention will be further described.
As shown in Figure 1 and Figure 2,110kV resin casting dry-type transformers of the present invention include turning to multilayer by conducting wire 4
The high-voltage winding and low pressure winding formed after structure through poured with epoxy resin；The conducting wire 4 includes conductive body and is wound on
Glass fibre 1 on conductive body outer circumferential surface, high-voltage winding and low pressure winding are the firm of conducting wire 4, resin and the composition of glass fibre 1
Body structure；For the high-voltage winding using series connection sectional circular core structure, axial in high-voltage winding sets heat dissipation air flue 3, heat dissipation
The periphery of air flue 3 sets shielded layer 2；The low pressure winding uses sectional circular core structure, is dissipated in axial set of low pressure winding
Hot gas road 3, the unshielded structure in periphery for the air flue 3 that radiates.
110kV grade resins casting dry type transformer of the present invention aims at modern city 110kV Power Plant Designs, is divided into
Two major class of on-load voltage regulation and non-excitation pressure adjustment, noise can be controlled in below 60dB, and the security performance run is high, anti-short circuit capability
By force, good insulation preformance, impact resistance, pollution-free, fire-proof and explosion-proof, non-maintaining.Although shortcoming is 2.5 that cost is oil-immersed transformer
Times, but 110kV grade resins casting dry type transformers are highly greatly lowered, excellent fire protecting performance, and exempt from during use
Maintenance characteristics, cost is integrated from cost of construction, fire-fighting expense, operation and maintenance expense analysis 110kV grade resins casting dry type transformer is saved
It is advantageous.
The high-voltage winding of 110kV series plastics casting dry type transformers employs air flue shielding sectional circular core structure, leads to
Crossing the setting of air flue shielding makes the voltage at air flue inner air gap both ends be reduced to zero, and the air gap in air flue no longer undertakes transformer
The function of layer insulation, voltage between layers are converted into the voltage between the shielded layer of air flue and winding conductor.Its dielectric is resin
The single solid insulation formed with glass fibre.The insulator is as the insulator at other positions inside winding.It is in vacuum
Cured under state with resin-cast and formed.Resin, glass fibre, shielded layer, copper conductor are intimately associated, and therefore, shield sectional circular
Cartridge type winding is resistant to higher voltage between layers.
Anti-short circuit capability is strong, and for line is around sectional circular cartridge type product structure, for vacuum pouring magnetic force, its size is determined
Due to uneven amplitude on two winding respective regions, since the winding is line around sectional circular cartridge type, the outermost layer of winding is tapped at
Can be achieved, therefore ampere-turn imbalance amplitude is small, generally 0.8% ~ 1.5%, therefore axial electromagnetic force is little, its action effect and
Speech, due to the cast integral features of winding, axial electromagnetic force only has the possibility for making winding integral shift.Solve the position of winding
Move, therefore short-circuit electromotive force can not destroy the winding of such transformer.At the same time be also 110kV resin casting dry-type transformers outside
The reason for will not causing transformer damage under portion's short trouble.
In normal conditions of use, the capacity of 110kV resin casting dry-type transformers can improve 50%, protect to greatest extent
Card is to customer power supply, to reduce loss of outage.The capacity of transformer and spare number of units selected by saving at the same time, to reduce primary throw
Money, improves utilization rate of equipment and installations.
Low noise, the core structure of 110kV resin casting dry-type transformers is using monolithic, five steppings, longitudinal ladder lamination
Mode, noise are decreased obviously.Global optimization in core design, reduces the density of magnetic flux, and magnitude of magnetostriction is reduced, inherently kept away
Magnetostriction frequency has been opened, has reduced the noise of transformer, cooling system uses domestic silent ventilator.
Impact resistance ability is strong, in the distribution of surge voltage, due to shielding sectional circular cartridge type longitudinal direction capacitance much larger than pair
Ground capacitance, therefore distribution of the surge voltage on such winding is ideal.Sectional circular cartridge type longitudinal direction capacitance is shielded, generally
6 ~ 8 times of direct-to-ground capacitance value.In addition, the impact that shielding sectional circular cartridge type winding belongs to " non-homogeneous winding " on shock characteristic is special
Sign.Reach the optimal compensation state by adjusting the configuration of every section of capacitance, every layer of number of turn after segmentation on winding physical segment is carried out
Adjustment, makes capacitance profile more they tend to perfect condition, so that when winding is impacted, voltage is more evenly distributed, and more they tends to steady
Determine state.
With excellent fire protecting performance, its dielectric is a kind of fire retardant, self-extinguishing material of performance brilliance, is transported in transformer
In row environment, physicochemical properties are extremely stable, and 110kV grade resins casting dry type transformer will not produce any be unfavorable for
The gas of environment or other intermediate products, there is the good feature of environmental protection.
110kV grade resins casting dry type transformers are more succinct in overall structure, its agent structure for iron core, around
Group, upper and lower iron pound yoke cushion block, and wherein iron core and cushion block is most safe in transformer body, most stable of component, need not to this component
Safeguarded, the winding of resin casting dry-type transformer is the rigid structure that glass fibre, resin and copper conductor are formed, and is had
Stress equalization effect, mechanical strength is higher.Since oil seepage phenomenon is not present in 110kV grade resins casting dry type transformer, together
When need not refuel, change oil, oil strain, greatly reduce the workload of maintenance.
Claims (3)
1. a kind of 110kV resin casting dry-type transformers, including by conducting wire（4）Turn to after sandwich construction through poured with epoxy resin
The high-voltage winding and low pressure winding formed；It is characterized in that：The high-voltage winding is using series connection sectional circular core structure, in high voltage winding
The axial of group sets heat dissipation air flue（3）, radiate air flue（3）Periphery set shielded layer（2）；The low pressure winding uses sectional circular
Core structure, axial in low pressure winding set heat dissipation air flue（3）.
2. 110kV resin casting dry-type transformers as claimed in claim 1, it is characterized in that：The conducting wire（4）Including conduction originally
Body and the glass fibre being wound on conductive body outer circumferential surface（1）.
3. 110kV resin casting dry-type transformers as claimed in claim 1, it is characterized in that：The high-voltage winding and low pressure around
Group is conducting wire（4）, resin and glass fibre（1）The rigid structure of composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711494450.0A CN107946048A (en) | 2017-12-31 | 2017-12-31 | 110kV resin casting dry-type transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711494450.0A CN107946048A (en) | 2017-12-31 | 2017-12-31 | 110kV resin casting dry-type transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107946048A true CN107946048A (en) | 2018-04-20 |
Family
ID=61938146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711494450.0A Pending CN107946048A (en) | 2017-12-31 | 2017-12-31 | 110kV resin casting dry-type transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107946048A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847331A (en) * | 2018-07-02 | 2018-11-20 | 河南森源电气股份有限公司 | A kind of transformer and coil block |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2359788Y (en) * | 1998-07-17 | 2000-01-19 | 山东省金曼克电气集团股份有限公司 | Resin pouring winding air flue shielding structure of power transformer |
| US6160464A (en) * | 1998-02-06 | 2000-12-12 | Dynapower Corporation | Solid cast resin coil for high voltage transformer, high voltage transformer using same, and method of producing same |
| CN101308721A (en) * | 2007-05-14 | 2008-11-19 | 沈阳昊诚电气有限公司 | Epoxy cast dry transformer |
| CN101409143A (en) * | 2008-08-05 | 2009-04-15 | 无锡市普天铁心有限公司 | Method for locating and overlapping center of transformer core |
| CN201594454U (en) * | 2010-02-09 | 2010-09-29 | 卧龙电气集团股份有限公司 | Epoxy resin casting exicitation/rectification dry type transformer |
| CN102360833A (en) * | 2011-05-19 | 2012-02-22 | 云南通变电器有限公司 | Cellular epoxy resin insulation body for dry transformer |
| CN202258699U (en) * | 2011-10-24 | 2012-05-30 | 浙江凯能实业有限公司 | Iron core structure of rectifier transformer for dry-type variable-frequency speed regulation |
| CN103035398A (en) * | 2013-01-16 | 2013-04-10 | 昆明维峰电气技术开发有限公司 | Method for manufacturing resin insulation dry type energy-saving power transformer |
| CN204215865U (en) * | 2014-11-27 | 2015-03-18 | 山东泰开特变有限公司 | A kind of 20kV dry-type earth transformer |
-
2017
- 2017-12-31 CN CN201711494450.0A patent/CN107946048A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6160464A (en) * | 1998-02-06 | 2000-12-12 | Dynapower Corporation | Solid cast resin coil for high voltage transformer, high voltage transformer using same, and method of producing same |
| CN2359788Y (en) * | 1998-07-17 | 2000-01-19 | 山东省金曼克电气集团股份有限公司 | Resin pouring winding air flue shielding structure of power transformer |
| CN101308721A (en) * | 2007-05-14 | 2008-11-19 | 沈阳昊诚电气有限公司 | Epoxy cast dry transformer |
| CN101409143A (en) * | 2008-08-05 | 2009-04-15 | 无锡市普天铁心有限公司 | Method for locating and overlapping center of transformer core |
| CN201594454U (en) * | 2010-02-09 | 2010-09-29 | 卧龙电气集团股份有限公司 | Epoxy resin casting exicitation/rectification dry type transformer |
| CN102360833A (en) * | 2011-05-19 | 2012-02-22 | 云南通变电器有限公司 | Cellular epoxy resin insulation body for dry transformer |
| CN202258699U (en) * | 2011-10-24 | 2012-05-30 | 浙江凯能实业有限公司 | Iron core structure of rectifier transformer for dry-type variable-frequency speed regulation |
| CN103035398A (en) * | 2013-01-16 | 2013-04-10 | 昆明维峰电气技术开发有限公司 | Method for manufacturing resin insulation dry type energy-saving power transformer |
| CN204215865U (en) * | 2014-11-27 | 2015-03-18 | 山东泰开特变有限公司 | A kind of 20kV dry-type earth transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847331A (en) * | 2018-07-02 | 2018-11-20 | 河南森源电气股份有限公司 | A kind of transformer and coil block |
| CN108847331B (en) * | 2018-07-02 | 2024-01-19 | 河南森源电气股份有限公司 | Transformer and coil assembly |
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