CN108735482A - Inverse Scott dry type transformer - Google Patents
Inverse Scott dry type transformer Download PDFInfo
- Publication number
- CN108735482A CN108735482A CN201710274305.5A CN201710274305A CN108735482A CN 108735482 A CN108735482 A CN 108735482A CN 201710274305 A CN201710274305 A CN 201710274305A CN 108735482 A CN108735482 A CN 108735482A
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- CN
- China
- Prior art keywords
- transformer
- sovereign
- status
- voltage winding
- voltage
- 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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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
- H01F27/2828—Construction of conductive connections, of leads
-
- 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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- 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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F2038/006—Adaptations of transformers or inductances for specific applications or functions matrix transformer consisting of several interconnected individual transformers working as a whole
Abstract
Inverse Scott dry type transformer, is related to a kind of transformer.Currently, the low-voltage equipment power supply generally using accumulator to balance traction substation, troublesome maintenance, cost are higher.The present invention includes that T connects transformer and status of a sovereign transformer, it includes that T connects transformer stem that the T, which connects transformer, T connects transformer yoke column, T connects transformer high-voltage winding and T connects transformer low voltage winding, the status of a sovereign transformer includes status of a sovereign transformer stem, status of a sovereign transformer yoke column, status of a sovereign transformer high-voltage winding and status of a sovereign transformer low voltage winding, it is independent with status of a sovereign transformer high-voltage winding that the T connects transformer high-voltage winding, the T connects the extraction neutral point at the number of turns 2/3 of transformer low voltage winding, its end connect to form three symmetrical low-voltage outputs and a neutral end with the midpoint of status of a sovereign transformer low voltage winding.The low tension that the present invention exports is supplied to the low-voltage equipment of balance traction substation, at low cost, easy to maintain.
Description
Technical field
The present invention relates to a kind of transformers.
Background technology
Currently, according to the planning of State Grid Corporation of China, intelligent grid, which is built, took a three-stage approach in 2010 to during the year two thousand twenty,
It is related to seven power generation, transmission of electricity, power transformation, distribution, electricity consumption, scheduling and the communication information links.Actively development intelligent grid adapts to future
Sustainable development.One of major technique applied in intelligent grid --- balanced feeding technology.
Invention content
The technical problem to be solved in the present invention and the technical assignment of proposition are that prior art is improved and improved,
A kind of inverse Scott dry type transformer is provided, with achieve the purpose that can be low-voltage equipment power supply and it is at low cost, easy to maintain.For
This, the present invention takes following technical scheme.
Inverse Scott dry type transformer, it is characterised in that：Transformer and status of a sovereign transformer are connect including T, the T connects transformation
Device includes that T connects transformer stem, connection T meets the T of transformer stem and connects transformer yoke column, is coated at the use that T connects transformer stem
Transformer high-voltage winding is connect in the T of connection single-phase high voltage electricity and meets transformer low voltage winding, institute for exporting the T of low voltage three-phase electricity
The status of a sovereign transformer stated includes status of a sovereign transformer stem, the status of a sovereign transformer yoke column for connecting status of a sovereign transformer stem, is coated at master
The status of a sovereign transformer high-voltage winding for connecting single-phase high voltage electricity of position transformer stem and the master for exporting low voltage three-phase electricity
Position transformer low voltage winding, the T connect transformer high-voltage winding and status of a sovereign transformer high-voltage winding independence, and the T connects change
Depressor low pressure winding draws neutral point at the number of turns 2/3, and end connect to be formed with the midpoint of status of a sovereign transformer low voltage winding
Three symmetrical low-voltage outputs and a neutral end are can export three-phase line voltage and three-phase phase voltage.T connects transformer height
Pressure winding and status of a sovereign transformer high-voltage winding are connected on two-phase each other on the high-voltage electricity of 90 ° of phase differences, by the three of low pressure winding output
Phase low tension is still symmetrical, achievees the purpose that two-phase high-voltage electricity becomes three-phase low-voltage alternating current, the low tension offer of output balances
The illumination of traction substation, computer control system and other need low-voltage equipment, it is at low cost, it is easy to maintain.
As further improving and supplementing to above-mentioned technical proposal, the invention also includes following additional technical features.
The T connects transformer stem and the double core constructions of status of a sovereign transformer stem composition, and T connects transformer stem, the status of a sovereign
It is identical that transformer stem, T connect transformer yoke column, the section of status of a sovereign transformer yoke column.The magnetic flux distribution of seam crossing is improved, is reduced
Iron core no-load loss, while reducing iron core noise.
The T connects transformer high-voltage winding, status of a sovereign transformer high-voltage winding is multilayer sectional circular core structure.Rationally choosing
Interlayer and intersegmental operating voltage are taken, increases winding longitudinal direction capacitance, improves the distribution of surge voltage.
T meets transformer high-voltage winding, status of a sovereign transformer high-voltage winding, T and connects transformer low voltage winding, status of a sovereign transformer low voltage
Winding is equipped with insulating strength layer using enamel covered wire coiling and upper and lower end and outer layer, and is cured integrally by resin-cast
Structure.Polyester-imide enamel covered wire coiling can be used in winding, and the insulation of upper/lower terminal portion is reinforced insulating with nonwoven polyester fabric,
Insulation is reinforced using glass cloth bag to the outermost layer conductor of head and end, length is wrapped up using glass fiber to the insulated part of air flue both sides
Glass glass fiber continuous felt is filled, and external insulation is reinforced using glass wool cloth band, with mixtures such as epoxy resin, curing agent
It is integrated after vacuum pouring cures.Dry-type transformer is pollution-free, voltage distortion rate is small, mechanical strength is good, anti-short circuit capability is strong.
T connects transformer high-voltage winding and T connects between transformer low voltage winding and status of a sovereign transformer high-voltage winding and the status of a sovereign become
It is equipped with insulating cylinder between depressor low pressure winding.The insulating cylinder added improves lightning impulse resistant ability.
Advantageous effect：T connects transformer high-voltage winding and status of a sovereign transformer high-voltage winding is connected on two-phase 90 ° of phase differences each other
On high-voltage electricity, the three-phase low-voltage electricity exported by low pressure winding is still symmetrical, reaches two-phase high-voltage electricity and becomes three-phase low-voltage alternating current
Purpose, the low tension of output be supplied to the illumination of balance traction substation, computer control system and other need low-voltage equipment,
It is at low cost, it is easy to maintain.Insulation resin is used simultaneously, it is pollution-free, voltage distortion rate is small, mechanical strength is good, anti-short circuit capability is strong.
Description of the drawings
Fig. 1 is transformer core assembling schematic diagram.
Fig. 2 (a) is transformer assembling positive structure diagram.
Fig. 2 (b) is transformer assembling overlooking structure diagram.
Fig. 3 is transformer connection principle schematic.
In figure：1-T connects transformer stem, 2- status of a sovereign transformer stems, and 3-T meets transformer high-voltage winding, 4- insulating cylinders, 5-
Neutral point, the midpoints 6-, 7- status of a sovereign transformer high-voltage windings, 8-T connect transformer low voltage winding, 9- status of a sovereign transformer low voltage windings.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with Figure of description.
As shown in Figs. 1-3, the present invention includes that T connects transformer and status of a sovereign transformer, and it includes that T connects change that the T, which connects transformer,
Depressor stem 1, connection T connect transformer stem 1 T connect transformer yoke column, be coated at T connect transformer stem 1 for connecting list
The T of phase high-voltage electricity connects transformer high-voltage winding 3 and meets transformer low voltage winding 8, the master for exporting the T of low voltage three-phase electricity
Position transformer includes status of a sovereign transformer stem 2, the status of a sovereign transformer yoke column for connecting status of a sovereign transformer stem 2, is coated at status of a sovereign change
The status of a sovereign transformer high-voltage winding 7 for connecting single-phase high voltage electricity of depressor stem 2 and the status of a sovereign for exporting low voltage three-phase electricity
Transformer low voltage winding 9, the T connects transformer high-voltage winding 3 and status of a sovereign transformer high-voltage winding 7 is independent, and the T connects change
Depressor low pressure winding 8 draws neutral point 5 at the number of turns 2/3, and end is connect with the midpoint 6 of status of a sovereign transformer low voltage winding 9
Three symmetrical low-voltage outputs and a neutral end are formed so that three-phase line voltage, three-phase phase voltage can be exported.The T connects
2 groups of core constructions in pairs of transformer stem 1 and status of a sovereign transformer stem, T meet transformer stem 1, status of a sovereign transformer stem 2, T and connect
Transformer yoke column, the section of status of a sovereign transformer yoke column are identical.The T connect transformer high-voltage winding 3, status of a sovereign transformer high-voltage around
Group 7 is multilayer sectional circular core structure.T meets transformer high-voltage winding 3, status of a sovereign transformer high-voltage winding 7, T and connects transformer low voltage
Winding 8, status of a sovereign transformer low voltage winding 9 are equipped with insulating strength layer using enamel covered wire coiling and upper and lower end and outer layer, and lead to
It is into a single integrated structure to cross resin-cast solidification.T connects transformer high-voltage winding 3 and T connects between transformer low voltage winding 8 and status of a sovereign transformation
It is equipped with insulating cylinder 4 between device high-voltage winding 7 and status of a sovereign transformer low voltage winding 9.
Claims (4)
1. against Scott dry type transformer, it is characterised in that：Transformer and status of a sovereign transformer are connect including T, the T connects transformer
Transformer stem (1) is connect including T, connection T meets the T of transformer stem (1) and connects transformer yoke column, is coated at T and connects transformer stem
(1) the T for connecting single-phase high voltage electricity connects transformer high-voltage winding (3) and the T for exporting low voltage three-phase electricity connects transformer
Low pressure winding (8), the status of a sovereign transformer include the status of a sovereign of status of a sovereign transformer stem (2), connection status of a sovereign transformer stem (2)
Transformer yoke column, the status of a sovereign transformer high-voltage winding (7) for connecting single-phase high voltage electricity for being coated at status of a sovereign transformer stem (2)
And the status of a sovereign transformer low voltage winding (9) for exporting low voltage three-phase electricity, the T connect transformer high-voltage winding (3) and the status of a sovereign
Transformer high-voltage winding (7) is independent, and the T connects the extraction neutral point (5) at the number of turns 2/3 of transformer low voltage winding (8),
End is connect with the midpoint (6) of status of a sovereign transformer low voltage winding (9) forms three symmetrical low-voltage outputs and a neutral point
End is can export three-phase line voltage and three-phase phase voltage；Low-voltage output is supplied to the illumination of balance traction substation, computer
Control system and other need low-voltage equipment；The T connects transformer high-voltage winding (3), status of a sovereign transformer high-voltage winding (7) is
Multilayer sectional circular core structure.
2. inverse Scott dry type transformer according to claim 1, it is characterised in that：The T connects transformer stem (1)
Core construction in pairs is organized with status of a sovereign transformer stem (2), T meets transformer stem (1), status of a sovereign transformer stem (2), T and connects transformation
Device yoke column, the section of status of a sovereign transformer yoke column are identical.
3. inverse Scott dry type transformer according to claim 2, it is characterised in that：T connect transformer high-voltage winding (3),
Status of a sovereign transformer high-voltage winding (7), T connect transformer low voltage winding (8), status of a sovereign transformer low voltage winding (9) uses enamel covered wire
Coiling and upper and lower end and outer layer are equipped with insulating strength layer, and are cured by resin-cast into a single integrated structure, and winding uses polyester
Imines enamel covered wire coiling, the insulation of upper/lower terminal portion is reinforced insulating with nonwoven polyester fabric, to the outermost layer conductor of head and end
Reinforce insulating using glass cloth bag, the insulated part of air flue both sides is filled out using glass fiber package long glass fibres continuous felt
It fills, external insulation is reinforced using glass wool cloth band, is integrated after vacuum pouring cures with epoxy resin, curing agent mixture.
4. inverse Scott dry type transformer according to claim 3, it is characterised in that：T connect transformer high-voltage winding (3) and
T connect between transformer low voltage winding (8) and between status of a sovereign transformer high-voltage winding (7) and status of a sovereign transformer low voltage winding (9)
Equipped with insulating cylinder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710274305.5A CN108735482A (en) | 2017-04-17 | 2017-04-17 | Inverse Scott dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710274305.5A CN108735482A (en) | 2017-04-17 | 2017-04-17 | Inverse Scott dry type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108735482A true CN108735482A (en) | 2018-11-02 |
Family
ID=63934173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710274305.5A Pending CN108735482A (en) | 2017-04-17 | 2017-04-17 | Inverse Scott dry type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108735482A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110911164A (en) * | 2019-12-04 | 2020-03-24 | 江苏大航有能输配电有限公司 | 3-fold redundant high-voltage insulation system, design method thereof and dry-type transformer |
-
2017
- 2017-04-17 CN CN201710274305.5A patent/CN108735482A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110911164A (en) * | 2019-12-04 | 2020-03-24 | 江苏大航有能输配电有限公司 | 3-fold redundant high-voltage insulation system, design method thereof and dry-type transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181102 |
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| WD01 | Invention patent application deemed withdrawn after publication |