CN106158334A - A kind of 35kV cast-type combination transformer - Google Patents
A kind of 35kV cast-type combination transformer Download PDFInfo
- Publication number
- CN106158334A CN106158334A CN201610764695.XA CN201610764695A CN106158334A CN 106158334 A CN106158334 A CN 106158334A CN 201610764695 A CN201610764695 A CN 201610764695A CN 106158334 A CN106158334 A CN 106158334A
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- Prior art keywords
- voltage
- electric current
- transformer
- secondary coil
- cast
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Classifications
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- 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
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/34—Combined voltage and current transformers
- H01F38/36—Constructions
-
- 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
- H01F27/288—Shielding
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides a kind of 35kV cast-type combination transformer, including pour mass, Current Transformer Assembly, voltage transformer assembly；Being provided with the electric current chamber accommodating Current Transformer Assembly and the voltage chamber accommodating voltage transformer assembly in pour mass, electric current chamber is positioned at above voltage chamber, and is connected by a linear cavity between electric current chamber with voltage chamber；Current Transformer Assembly includes current ferric core, the electric current primary winding being set around on current ferric core and electric current secondary coil, and electric current primary winding is connected with line bank by a connection piece；Voltage transformer assembly includes voltage iron core, the voltage primary winding being set around on voltage iron core and voltage secondary coil, and voltage primary winding is connected with electric current primary winding by a high-voltage line, and high-voltage line is located in linear cavity.The combination transformer of the present invention is be applicable to 35kV and above outdoor mutual inductor, and volume is little, job stability is strong.
Description
Technical field
The present invention relates to transformer technical field, particularly relate to a kind of 35kV cast-type combination transformer.
Background technology
In prior art, 35kV and above voltage transformer summation current transformer all use split to arrange, and need independence
Installing, cause the cost of raw material high, processing time consuming is laborious, increases processing cost, and installs loaded down with trivial details, takes up room big.And
Generally specializing in measuring low voltage transformer is cast-type, and high pressure or superhigh pressure sealing formula gas-insulated (such as sulfur hexafluoride) are mutual
Sensor is also cast-type.Cast-type is applicable to the voltage transformer of below 35kV, 35kV and above product and is oil immersed type, right
In oil immersed type voltage transformer or current transformer, owing to its prolonged placement is in open air, unavoidably can be by rainfall, snowfall, mist air
Impact, its body can be caused to make moist, cause mulual inductor malfunction；And oil immersion type mutual-inductor there is also overheated, internal discharge, oozes
The most common failure such as leakage of oil, ferromagnetic resonance, needs often to safeguard.Therefore, one how is provided to be applicable to 35kV and above, volume
The potential and current transformers that little, job stability is strong is the problem that those skilled in the art need solution badly.
Summary of the invention
It is an object of the invention to provide a kind of be applicable to 35kV and the cast-type above, volume is little, job stability is strong electricity
Pressure and the combination transformer of electric current.
For achieving the above object, the invention provides a kind of 35kV cast-type combination transformer, mutual including pour mass, electric current
Sensor assembly, voltage transformer assembly；
It is provided with in described pour mass and accommodates the electric current chamber of described Current Transformer Assembly and accommodate described voltage transformer group
The voltage chamber of part, described electric current chamber is positioned at above described voltage chamber, and by a line between described electric current chamber and described voltage chamber
Shape chamber connects；
Described Current Transformer Assembly includes current ferric core, the electric current primary winding being set around on described current ferric core and electricity
Stream secondary coil, described electric current primary winding is connected with line bank by a connection piece；
Described voltage transformer assembly includes voltage iron core, is set around the voltage primary winding on described voltage iron core and electricity
Pressure secondary coil, described voltage primary winding is connected with described electric current primary winding by a high-voltage line, and described high-voltage line sets
In described linear cavity.
Optionally, described electric current primary winding and voltage primary winding outer surface are respectively equipped with the first screen layer；Described electricity
The electric current secondary coil assembly that stream secondary coil is integrally formed with described current ferric core, described electric current secondary coil module outer surface
It is provided with secondary shielding layer；The voltage secondary coil assembly that described voltage secondary coil is integrally formed with described voltage iron core, described
Voltage secondary coil module outer surface is provided with the 3rd screen layer.
Optionally, current ferric core is annular core, or rectangle iron core, or R shaped iron core, the material that described current ferric core uses
For ultramicro-crystal alloy.
Optionally, described voltage iron core is R shaped iron core, or notch cuttype iron core, and the material that described voltage iron core uses is
30ZH105 stalloy.
Optionally, the material of described pour mass is mixture of epoxy resins.
Optionally, described electric current secondary coil includes the first electric current secondary coil and the second electric current secondary coil, described
The number of turn of one electric current secondary coil is different from the number of turn of described second electric current secondary coil.
Optionally, described Current Transformer Assembly and described voltage transformer assembly are respectively a set of, and described line bank is 2
Individual.
Optionally, described pour mass, described Current Transformer Assembly are cast integral piece with described voltage transformer assembly.
The specific embodiment provided according to the present invention, the invention discloses techniques below effect: the 35kV that the present invention provides
Cast-type combination transformer constitutes electric current and voltage group together with being cast in voltage transformer assembly by Current Transformer Assembly
Close transformer, save raw material, facilitate processing, and ratio original volume-diminished more than 50%, save installation and account for
Space.The present invention is the mode using pour mass to combine with Current Transformer Assembly and voltage transformer assembly, constitutes
The cast-type combination transformer of 35kV, and this cast-type combination transformer also can apply to the voltage higher than 35kV grade
Conversion, with measurement, is compared oil immersion type mutual-inductor, is improve the working stability of the combination transformer of 35kV and above
Property.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these accompanying drawings
Obtain other accompanying drawing.
The forward sectional view of the 35kV cast-type combination transformer that Fig. 1 provides for the present invention；
The side sectional view of the 35kV cast-type combination transformer that Fig. 2 provides for the present invention；
The front view of the 35kV cast-type combination transformer that Fig. 3 provides for the present invention；
The side view of the 35kV cast-type combination transformer that Fig. 4 provides for the present invention；
The top view of the 35kV cast-type combination transformer that Fig. 5 provides for the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
It is an object of the invention to provide a kind of be applicable to 35kV and the cast-type above, volume is little, job stability is strong electricity
Pressure and the combination transformer of electric current.
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, real with concrete below in conjunction with the accompanying drawings
The present invention is further detailed explanation to execute mode.
The forward sectional view of the 35kV cast-type combination transformer that Fig. 1 provides for the present invention；Fig. 2 provides for the present invention
The side sectional view of 35kV cast-type combination transformer；Facing of the 35kV cast-type combination transformer that Fig. 3 provides for the present invention
Figure；The side view of the 35kV cast-type combination transformer that Fig. 4 provides for the present invention；The 35kV cast-type that Fig. 5 provides for the present invention
The top view of combination transformer.
As Figure 1-5, the 35kV cast-type combination transformer that the present invention provides, including pour mass 1, current transformer group
Part 2, voltage transformer assembly 3；It is provided with in pour mass 1 and accommodates the electric current chamber 11 of Current Transformer Assembly 2 and accommodate mutual induction of voltage
The voltage chamber 12 of device assembly 3, electric current chamber 11 is positioned at above voltage chamber 12, and linear by one between electric current chamber 11 and voltage chamber 12
Chamber 13 connects；
Current Transformer Assembly 2 includes current ferric core 21, the electric current primary winding 22 being set around on current ferric core 21 and electricity
Stream secondary coil 23, electric current primary winding 22 is connected with line bank 4 by a connection piece 24；
Voltage transformer assembly 3 includes voltage iron core 31, the voltage primary winding 32 being set around on voltage iron core 31 and electricity
Pressure secondary coil 33, voltage primary winding 32 is connected with electric current primary winding 22 by a high-voltage line 5, and line is located at by high-voltage line 5
In shape chamber 13.
Current Transformer Assembly 2 and voltage transformer assembly 3 are respectively a set of in the particular embodiment, and line bank 4 is 2
Individual.Current Transformer Assembly and voltage transformer assembly are cast in one by the 35kV cast-type combination transformer that the present embodiment provides
Rise, constitute electric current and voltage combination transformer, save raw material, facilitate processing, and than original volume-diminished
More than 50%, save and the space taken is installed.The present invention is to use pour mass and Current Transformer Assembly and voltage transformer
The mode that assembly combines, constitutes the cast-type combination transformer of 35kV, and can also the answering of this cast-type combination transformer
With with higher than 35kV grade voltage transformation with measure in, compare oil immersion type mutual-inductor, improve 35kV and above
The job stability of combination transformer, and pollution-free, non-maintaining, improve.
Further, the present embodiment unlike other embodiments, electric current primary winding 22 and voltage primary winding 32
Outer surface is respectively equipped with the first screen layer 61, and the material of this first screen layer 61 is semiconductive material；Electric current secondary coil 23 with
The electric current secondary coil assembly that current ferric core 21 is integrally formed, electric current secondary coil module outer surface is provided with secondary shielding layer 62；
The voltage secondary coil assembly that voltage secondary coil 33 is integrally formed with voltage iron core 31, voltage secondary coil module outer surface sets
Having the 3rd screen layer 63, its first screen layer 61, secondary shielding layer 62 and the 3rd screen layer 63 all pass through ground wire grounded, and the
One screen layer 61, secondary shielding layer 62 and the 3rd screen layer 63 are all shielding paper, use shielding paper parcel to need the structure of shielding.
Which reducing the partial discharge quantity of this combination transformer, the shielding process of the present invention is compared the local of existing shielding process and is put
Electricity reduces 60%, it is ensured that the stable performance of combination transformer, reliable.
Further, the current ferric core 21 in the present invention is annular core, or rectangle iron core, or R shaped iron core, described electric current
The material that iron core uses is ultramicro-crystal alloy, and ultramicro-crystal alloy has more excellent comprehensive mechanical performance than other similar alloys
With mechanical property, superpower stability and dimensional stability, fabulous antifriction quality and good wearability, therefore, this surpasses
The current ferric core of microcrystallizing alloy can have more preferable mechanical performance, mechanical property, antifriction performance and anti-wear performance.Potential winding
31 is R shaped iron core, or notch cuttype iron core, and the material that described voltage iron core uses is 30ZH105 stalloy, 30ZH105 stalloy
For the material of high saturation magnetic flux density, and owing to the net sectional area of notch cuttype iron core is big, which enhance leading of voltage iron core
Magnetic rate, and then improve the anti-saturation of combination transformer, make the anti-saturation multiple of the combination transformer of the present invention can reach 2.5
Times, i.e. test voltage is 145V, and electric current is less than 1A；Test voltage 110V of comparison with standard, electric current is less than 1A, it more difficult to reach full
With, improve the anti-saturation of combination transformer.
Further, the material of pour mass 1 is mixture of epoxy resins, and pour mass, Current Transformer Assembly are mutual with voltage
Sensor assembly is cast integral piece, and the casting process of Current Transformer Assembly 2 and voltage transformer assembly 3 is at vacuum state
Lower casting epoxy resin compound, it is to avoid pour mass exists bubble, it is achieved that high electric strength, low local discharging level, make
This combination transformer is long for service life, and compares the oil immersion type mutual-inductor of existing 35kV, the 35kV cast-type combination of the present invention
Transformer is without Leakage, environmental protection and non-maintaining.
Further, the present embodiment is unlike other embodiments, and electric current secondary coil 23 includes the first electric current secondary
Coil and the second electric current secondary coil, the number of turn of the first electric current secondary coil is different from the number of turn of the second electric current secondary coil, makes
The Current Transformer Assembly of this combination transformer has no-load voltage ratio translation function, can switch between two kinds of no-load voltage ratios, and the first electricity
Stream secondary coil and the second electric current secondary coil all meet required precision.
In the above-described embodiments, structured material is H level heat proof material, with meet fire department fire prevention want
Ask.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment, identical similar portion sees mutually.
Principle and the embodiment of the present invention are set forth by specific case used herein, saying of above example
Bright method and the core concept thereof being only intended to help to understand the present invention；Simultaneously for one of ordinary skill in the art, foundation
The thought of the present invention, the most all will change.In sum, this specification content is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a 35kV cast-type combination transformer, it is characterised in that include pour mass, Current Transformer Assembly, mutual induction of voltage
Device assembly；
It is provided with in described pour mass and accommodates the electric current chamber of described Current Transformer Assembly and accommodate described voltage transformer assembly
Voltage chamber, described electric current chamber is positioned at above described voltage chamber, and by a linear cavity between described electric current chamber and described voltage chamber
Connection；
Described Current Transformer Assembly includes current ferric core, the electric current primary winding being set around on described current ferric core and electric current two
Secondary coil, described electric current primary winding is connected with line bank by a connection piece；
Described voltage transformer assembly includes voltage iron core, is set around the voltage primary winding on described voltage iron core and voltage two
Secondary coil, described voltage primary winding is connected with described electric current primary winding by a high-voltage line, and institute is located at by described high-voltage line
State in linear cavity.
35kV cast-type combination transformer the most according to claim 1, it is characterised in that described electric current primary winding and electricity
Pressure primary winding outer surface is respectively equipped with the first screen layer；The electricity that described electric current secondary coil is integrally formed with described current ferric core
Stream secondary coil assembly, described electric current secondary coil module outer surface is provided with secondary shielding layer；Described voltage secondary coil and institute
Stating the voltage secondary coil assembly that voltage iron core is integrally formed, described voltage secondary coil module outer surface is provided with the 3rd shielding
Layer.
35kV cast-type combination transformer the most according to claim 1, it is characterised in that described current ferric core is annular ferrum
Core, or rectangle iron core, or R shaped iron core, the material that described current ferric core uses is ultramicro-crystal alloy.
35kV cast-type combination transformer the most according to claim 1, it is characterised in that described voltage iron core is R sections
Core, the material that described R shaped iron core uses is 30ZH105 stalloy.
35kV cast-type combination transformer the most according to claim 1, it is characterised in that the material of described pour mass is ring
Epoxy resins compound.
35kV cast-type combination transformer the most according to claim 1, it is characterised in that described electric current secondary coil includes
First electric current secondary coil and the second electric current secondary coil, the number of turn of described first electric current secondary coil and described second electric current two
The number of turn of secondary coil is different.
35kV cast-type combination transformer the most according to claim 1, it is characterised in that described Current Transformer Assembly and
Described voltage transformer assembly is respectively a set of, and described line bank is 2.
35kV cast-type combination transformer the most according to claim 1, it is characterised in that described pour mass, described electric current
Transformer component and described voltage transformer assembly are cast integral piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764695.XA CN106158334B (en) | 2016-08-30 | 2016-08-30 | A kind of 35kV cast-types combination transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764695.XA CN106158334B (en) | 2016-08-30 | 2016-08-30 | A kind of 35kV cast-types combination transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106158334A true CN106158334A (en) | 2016-11-23 |
| CN106158334B CN106158334B (en) | 2018-07-06 |
Family
ID=57344777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610764695.XA Ceased CN106158334B (en) | 2016-08-30 | 2016-08-30 | A kind of 35kV cast-types combination transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106158334B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342152A (en) * | 2017-08-25 | 2017-11-10 | 河南卓达电气有限公司 | A kind of full cast-type combination transformer of phase three-wire three |
| CN109585148A (en) * | 2018-12-05 | 2019-04-05 | 山东天健电气有限公司 | A kind of combined instrument transformer |
| CN110828112A (en) * | 2019-11-28 | 2020-02-21 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed composite insulation three-phase combined transformer |
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| JPH0680623B2 (en) * | 1991-09-25 | 1994-10-12 | 北海道電力株式会社 | Power transformers for power supply and demand |
| KR100761008B1 (en) * | 2007-06-01 | 2007-09-21 | 영화산업전기 주식회사 | molding method of Voltage/current transformer for metering and power supply |
| KR101024729B1 (en) * | 2008-10-17 | 2011-03-24 | 엘에스산전 주식회사 | Metering out fit |
| CN201829339U (en) * | 2010-08-12 | 2011-05-11 | 浙江天际互感器有限公司 | Single-phase dry type combined mutual inductor |
| CN202695114U (en) * | 2012-08-03 | 2013-01-23 | 大连金业电力设备有限公司 | 35kV outdoor composite dry type voltage transformer |
| CN102906577A (en) * | 2010-05-17 | 2013-01-30 | Abb技术有限公司 | Line-powered instrument transformer |
| CN104240929A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | Single-phase pouring type combination measuring dry transformer |
| CN205092142U (en) * | 2015-10-14 | 2016-03-16 | 江苏嘉盈电器集团有限公司 | Crowning die mould combination formula electronics mutual -inductor |
| CN205959761U (en) * | 2016-08-30 | 2017-02-15 | 大连和源电器有限公司 | 35kV pouring type combined mutual inductor |
-
2016
- 2016-08-30 CN CN201610764695.XA patent/CN106158334B/en not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0680623B2 (en) * | 1991-09-25 | 1994-10-12 | 北海道電力株式会社 | Power transformers for power supply and demand |
| KR100761008B1 (en) * | 2007-06-01 | 2007-09-21 | 영화산업전기 주식회사 | molding method of Voltage/current transformer for metering and power supply |
| KR101024729B1 (en) * | 2008-10-17 | 2011-03-24 | 엘에스산전 주식회사 | Metering out fit |
| CN102906577A (en) * | 2010-05-17 | 2013-01-30 | Abb技术有限公司 | Line-powered instrument transformer |
| CN201829339U (en) * | 2010-08-12 | 2011-05-11 | 浙江天际互感器有限公司 | Single-phase dry type combined mutual inductor |
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| CN104240929A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | Single-phase pouring type combination measuring dry transformer |
| CN205092142U (en) * | 2015-10-14 | 2016-03-16 | 江苏嘉盈电器集团有限公司 | Crowning die mould combination formula electronics mutual -inductor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342152A (en) * | 2017-08-25 | 2017-11-10 | 河南卓达电气有限公司 | A kind of full cast-type combination transformer of phase three-wire three |
| CN109585148A (en) * | 2018-12-05 | 2019-04-05 | 山东天健电气有限公司 | A kind of combined instrument transformer |
| CN110828112A (en) * | 2019-11-28 | 2020-02-21 | 湖南大北互互感器有限公司 | Outdoor totally-enclosed composite insulation three-phase combined transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106158334B (en) | 2018-07-06 |
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