CN106098322A - A kind of multivoltage output intermediate transformer - Google Patents
A kind of multivoltage output intermediate transformer Download PDFInfo
- Publication number
- CN106098322A CN106098322A CN201610367229.8A CN201610367229A CN106098322A CN 106098322 A CN106098322 A CN 106098322A CN 201610367229 A CN201610367229 A CN 201610367229A CN 106098322 A CN106098322 A CN 106098322A
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- China
- Prior art keywords
- voltage
- low
- coil
- multivoltage
- transformer
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- 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
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
-
- 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
- H01F27/2885—Shielding with shields or electrodes
-
- 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
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses a kind of multivoltage output intermediate transformer, including low-voltage coil, intermediate voltage winding, high-tension coil, described low-voltage coil uses delta connection, the outlet of low-pressure side upper end, medium pressure coil uses wye connection, the outlet of low-pressure side lower end, and described high-tension coil uses wye connection, the outlet of upper end, high-pressure side also increases by a tap, adds one group of voltage output.This intermediate transformer possesses middle and high voltage multi-level output, coordinates electronic off circuit tap changer to regulate, and can meet the requirement carrying out transformer test under different voltage levels.
Description
Technical field
The present invention relates to a kind of multivoltage output transformator, specifically a kind of test middle transformation of multivoltage output
Device.
Background technology
At present in transformer test, need transformator is carried out the Multitests such as zero load, load, temperature rise, due to different quilts
The high pressure of testing transformer, low pressure can not all as, it is desirable to different electric pressures meet the requirement of transformer test.
Generally use pressure regulator to power, but the output area of pressure regulator is mostly at below 0.8kV, for voltage levels
20kV, 35kV, 110kV and above existing pressure regulator cannot meet test requirements document, there is limitation.Ye You producer uses phase
Become in the middle of interim with the transformator of voltage ratio, identical electric pressure, replace testing transformer to use, but this kind of method discomfort
Have been fixed in the experimental station layout in a space for pressure regulator, intermediate transformer, the transformer cabinet of detection, often move
Becoming in the middle of interim, can increase workload, increase floor space, relevant device needs reconnect, debugging, has the efficiency of test
The biggest impact.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the invention discloses the middle change of a kind of multivoltage output
Depressor, can meet the transformer testing requirement of different electric pressure.
Technical scheme: the invention discloses a kind of multivoltage output intermediate transformer, including low-voltage coil, intermediate voltage winding,
High-tension coil；Described low-voltage coil uses delta connection, the outlet of low-pressure side upper end；Medium pressure coil uses wye connection,
The outlet of low-pressure side lower end；Described high-tension coil uses wye connection, and the outlet of upper end, high-pressure side also increases by a tap, adds one group
Voltage exports.
Due to oil-filled transformer self, office puts higher, can affect the local discharge test of tested transformator, it is preferable that described
Intermediate transformer is dry-type transformer.
Preferred as another kind, above-mentioned dry-type transformer uses poured with epoxy resin technique, and described low-voltage coil uses end
Envelope cured；Medium pressure coil uses poured with epoxy resin to process；Described high-tension coil uses poured with epoxy resin to process.
Use poured with epoxy resin technique that transformer coil can be made to have excellent electrical property and mechanical property.
Preferred as another kind, above-mentioned dry-type transformer mesolow coil use multi-layer cylindrical paper tinsel around structure, line layer it
Between place classification layer insulation and air flue；Medium pressure coil uses multi-layer cylindrical winding structure, places classification between line layer
Layer insulation and air flue；Described high-tension coil uses one or more snippets multi-layer cylindrical winding structure.This winding structure is used to fill
Point make use of low voltage foil winding coil to have air flue and arrange flexibly, greatly, electric potential gradient is little, shock resistance voltage capability for winding inter-turn electric capacity
Strong advantage, overcomes high-tension coil according to paper tinsel around the problem then having complex process.Meanwhile, high-tension coil uses segmentation many
Layer cylinder mode can reduce voltage between layers.
As another kind preferably, the additional screen layer of low-voltage coil, to ensure that output voltage, not by signal disturbing, is similar to
Standard sine wave.
Beneficial effect: compared with prior art, multivoltage disclosed by the invention output intermediate transformer has the advantage that
1, possess middle and high voltage multi-level output, coordinate electronic off circuit tap changer to regulate, it is possible to meet the transformation of different electric pressure
Device test requirements document, makes an intermediate transformer disclosed by the invention can replace multiple stage intermediate transformer, reaches maximal efficiency, saves
Test input cost and floor space；2, the gage system that intermediate transformer disclosed by the invention is used ensure that enough
Electrical distance, reduces floor space, facilitates test operation；3, low-voltage coil increases screen layer, can effectively eliminate signal disturbing,
Improve the reliability of electrical equipment work；4, intermediate transformer disclosed by the invention is epoxy cast dry transformer, structure letter
Singly, office lowers, screening arrangement is arranged conveniently, assembly work intensity is low, the convenient feature of test connection.
Accompanying drawing explanation
Fig. 1 is the low-voltage coil connection diagram of the present invention；
Fig. 2 is the middle pressure/high-tension coil connection diagram of the present invention；
Fig. 3 is the front view of the embodiment of the present invention；
Fig. 4 is the rearview of the embodiment of the present invention；
Fig. 5 is the left view of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, it is further elucidated with the present invention.
In figure, 1-high-voltage connection, 2-low-voltage lead, voltage lead wires in 3-, 4-coil, 5-upper clamping piece, 6-lower clamping piece, 7-presses
Block, 8-base.
As depicted in figs. 1 and 2, the present invention uses YN yn11d11 to connect group pattern, is divided into low-voltage coil, middle line ball
Circle, high-tension coil three winding pattern, low-voltage coil uses delta connection, the outlet of low-pressure side upper end；Intermediate voltage winding uses star
Connection, the outlet of low-pressure side lower end；High-tension coil uses star connection, the outlet of upper end, high-pressure side, and takes out in high-tension coil
Head, increases by one group of voltage range.Each lead-in wire can be connected with electronic off circuit tap changer, carries out voltage-regulation, uses this kind
Gage system, simple to operate in later stage transformer test, it is possible to ensure enough electrical distances, reduce floor space, effectively carry
High test efficiency.
Intermediate transformer in the present embodiment uses dry-type transformer, such as Fig. 3, shown in Fig. 4, Fig. 5.Wherein low-voltage coil is adopted
With multi-layer cylindrical paper tinsel around structure, specially Copper Foil coiling.Input 0 0.8kV, end seal cured, delta connection type
Formula, the outlet of low-pressure side upper end, place classification layer insulation between line layer, with air flue, it is ensured that certain cooling requirements, low pressure
The additional one layer of Copper Foil of coil, and lead-out wire reliable ground, as screen layer, return common-mode signal in low-voltage coil to the earth, have
Decrease to effect the reliability interfering, improve electrical equipment work between equipment.
Intermediate voltage winding uses multi-layer cylindrical winding structure, specially copper wire winding.Outfan 0 3.3kV, under low-pressure side
Bringing out line, poured with epoxy resin processes, and places classification layer insulation between line layer, and band air flue, it is ensured that temperature increase requirement, star connects
Method, the outlet of coil lower end.
High-tension coil uses 6 sections of multi-layer cylindrical winding structures, outfan 0 18kV, outfan 0 24kV, asphalt mixtures modified by epoxy resin
Fat cast processes, and coil high pressure increases by one group of tap, coil high-pressure side upper end outlet, it is ensured that the order of output voltage 0-A-B-C,
Facilitate wiring.
Claims (5)
1. a multivoltage output intermediate transformer, it is characterised in that: include low-voltage coil, intermediate voltage winding, high-tension coil；Described
Low-voltage coil uses delta connection, the outlet of low-pressure side upper end；Medium pressure coil uses wye connection, brings out under low-pressure side
Line；Described high-tension coil uses wye connection, and the outlet of upper end, high-pressure side also increases by one group of tap.
Multivoltage the most according to claim 1 output intermediate transformer, it is characterised in that: become in the middle of the output of described multivoltage
Depressor is dry-type transformer.
Multivoltage the most according to claim 2 output intermediate transformer, it is characterised in that: described low-voltage coil uses end seal
Cured；Medium pressure coil uses poured with epoxy resin to process；Described high-tension coil uses poured with epoxy resin to process.
Multivoltage the most according to claim 2 output intermediate transformer, it is characterised in that: described low-voltage coil uses multilamellar
Drum type brake paper tinsel is around placing classification layer insulation and air flue between structure, line layer；Medium pressure coil use multi-layer cylindrical line around
Structure, places classification layer insulation and air flue between line layer；Described high-tension coil use one or more snippets multi-layer cylindrical line around
Structure.
Multivoltage the most according to claim 2 output intermediate transformer, it is characterised in that: the additional shielding of described low-voltage coil
Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610367229.8A CN106098322A (en) | 2016-05-27 | 2016-05-27 | A kind of multivoltage output intermediate transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610367229.8A CN106098322A (en) | 2016-05-27 | 2016-05-27 | A kind of multivoltage output intermediate transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106098322A true CN106098322A (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610367229.8A Pending CN106098322A (en) | 2016-05-27 | 2016-05-27 | A kind of multivoltage output intermediate transformer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316910A (en) * | 1988-06-17 | 1989-12-21 | Hitachi Ltd | Shell-type transformer coil |
| CN101471175A (en) * | 2007-12-26 | 2009-07-01 | 上海置信电气股份有限公司 | Wind power transformer and manufacturing method thereof |
| CN201307485Y (en) * | 2008-11-13 | 2009-09-09 | 马黎明 | Trisected dry-type rectiformer of epoxy resin insulating variable frequency drive |
| CN202352498U (en) * | 2011-11-25 | 2012-07-25 | 保定天威集团有限公司 | Three-winding on-load voltage-regulating step-down transformer with taps at high, medium and low voltage |
| CN202585074U (en) * | 2011-12-29 | 2012-12-05 | 保定天威集团(江苏)五洲变压器有限公司 | Changeable type test intermediate transformer device |
| CN105336483A (en) * | 2015-11-21 | 2016-02-17 | 河南铜牛变压器有限公司 | Maintenance-free three-phase efficient and energy-saving rectification dry type transformer |
-
2016
- 2016-05-27 CN CN201610367229.8A patent/CN106098322A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316910A (en) * | 1988-06-17 | 1989-12-21 | Hitachi Ltd | Shell-type transformer coil |
| CN101471175A (en) * | 2007-12-26 | 2009-07-01 | 上海置信电气股份有限公司 | Wind power transformer and manufacturing method thereof |
| CN201307485Y (en) * | 2008-11-13 | 2009-09-09 | 马黎明 | Trisected dry-type rectiformer of epoxy resin insulating variable frequency drive |
| CN202352498U (en) * | 2011-11-25 | 2012-07-25 | 保定天威集团有限公司 | Three-winding on-load voltage-regulating step-down transformer with taps at high, medium and low voltage |
| CN202585074U (en) * | 2011-12-29 | 2012-12-05 | 保定天威集团(江苏)五洲变压器有限公司 | Changeable type test intermediate transformer device |
| CN105336483A (en) * | 2015-11-21 | 2016-02-17 | 河南铜牛变压器有限公司 | Maintenance-free three-phase efficient and energy-saving rectification dry type transformer |
Non-Patent Citations (1)
| Title |
|---|
| 邵宗良: "变压器试验用中间变压器的简介", 《变压器》 * |
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Application publication date: 20161109 |