CN106373756A - Anti-short circuit transformer and preparation technology thereof - Google Patents
Anti-short circuit transformer and preparation technology thereof Download PDFInfo
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- CN106373756A CN106373756A CN201610967590.4A CN201610967590A CN106373756A CN 106373756 A CN106373756 A CN 106373756A CN 201610967590 A CN201610967590 A CN 201610967590A CN 106373756 A CN106373756 A CN 106373756A
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- 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
- H01F27/323—Insulation between winding turns, between winding layers
-
- 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
- H01F27/2866—Combination of wires and sheets
-
- 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
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/122—Insulating between turns or between winding layers
-
- 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
- H01F27/2847—Sheets; Strips
- H01F2027/2857—Coil formed from wound foil conductor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Induction Heating (AREA)
- Insulating Of Coils (AREA)
Abstract
The invention particularly relates to an anti-short circuit transformer and a preparation technology thereof. The anti-short circuit transformer comprises an A-phase coil, a B-phase coil, a C-phase coil. Each of the A-phase coil, the B-phase coil and the C-phase coil comprises an iron core, a low-voltage coil and a high-voltage coil. Each low-voltage coil and each high-voltage coli are sleeved out of each iron core. An inner insulation paper board, a low-voltage coil lead, interlayer insulation and an end coil of each low-voltage coil form an integrated structure. A lead, the interlayer insulation and the end coil of each high-voltage coil form an integrated structure. Cushion blocks and clamp elements are arranged out of the end coils of the low-voltage coils and the high-voltage coils in sequence. The low-voltage coils, the high-voltage coils and the iron cores are braced through round rods. Clearances among the A-phase coil, the B-phase coil and the C-phase coil are braced through bracing boards. The A-phase coil and the C-phase coil at two ends are equipped with insulation boards. The insulation boards are connected with the lamp elements through thimbles. According to the transformer and the technology, under the condition that raw material costs are not increased, the distribution transformer has an anti-short circuit capability, a winding is effectively prevented from losing stability and deforming when the transformer is in a short circuit, and more profit margins are provided for a producer/manufacturer.
Description
(1) technical field
The present invention relates to transformator, particularly to a kind of resistance to shorting transformator and its preparation technology.
(2) background technology
At this stage, the requirement more and more higher to electrical network distribution transforming transformator quality with Guo Wang company, will meet anti-short circuit capability,
Traditional structure is to have formed glass steel cylinder inside round structure, and low pressure winding for Transformer Winding, and also has 20mm thick
Pressing plate, short circuit could be passed through, cost more high than conventional common ellipsoid distribution transforming transformator (typically will high 15%), significantly
Occupy profit margin.
It is known that acting on mechanical force holding between current-carrying parallel wire, if the power direction phase in wire
With secondary power makes two wires attract each other, if current in wire is in opposite direction, the mechanical force between wire is mutually exclusive.In both
In the case of, the active force in each wire unit length (cm) is equal to: in (kg/cm) formulaFor the electric current in wire
(instantaneous value), and d is the distance between wire.Winding whole wire turn power with same current is mutually close to, in the effect of this power
Under, winding seems to try hard to reduce the girth in section itself.In rated current power next time and less, but when transformator happens suddenly
When short-circuit, this power will be increased dramatically, and it presses the square law change of short circuit current and rated current ratio.
Active force between transformator first winding and Secondary Winding excludes each other；Because the electricity in two windings
Stream phase contrast is close to 180 degree, therefore always contrary in their electric current of each moment.Act on total composite force on winding etc.
In acting on the power sum in each wire.Under rated current state, the repulsive force between winding is little, but in short circuit, this
Power will increase toTimes.If do not taken appropriate measures, this power is possible to cause winding unstability, causes winding
Destroy.
In double winding, the sense of current is contrary, if the low pressure winding sense of current is outwards, the high pressure winding sense of current inwards, root
According to the right-hand rule, their leakage magnetic flux (in figure is represented by dashed line) between two windings inevitable upwards, as shown in Figure 1.
For convenience, leakage magnetic flux can be divided into two components: axial leakage magnetic flux and radial leakage magnetic flux.Axial leakage magnetic flux is
Vertically upward, radial leakage magnetic flux is because winding upper end leakage magnetic flux outwards dissipates, and lower end is drawn in inside winding and said generation
Horizontal component.From the right-hand rule: axial leakage magnetic flux produces radial electromagnetic force, radial leakage field produces axial electromagnetic force, such as
Shown in Fig. 2.Axial leakage magnetic flux makes outside high pressure winding produce outside radial tension force, and that is, high pressure winding external diameter will become big, around
Direction Tensile stress, winding conducting wire must endure as this power；Conversely, axial leakage magnetic flux makes inner side low pressure winding inwardly produce
Radial pressure, that is, low pressure winding internal diameter direction compressed, design with to prevent when manufacturing this winding in short circuit unstability and become
Shape.
(3) content of the invention
The present invention is in order to make up the deficiencies in the prior art, there is provided a kind of resistance to shorting transformator and its preparation technology, and the present invention is led to
Cross special process and structure makes three-phase coil become " steel body " structure；Cardboard and round log rod support is used between coil and iron core
Tightly, low-voltage coil is stoped to be subject to shrink inward, so as to sustain the impact of short-circuit force during short-circuit force.
The present invention is achieved through the following technical solutions:
A kind of resistance to shorting transformator, including a phase coil, b phase coil, c phase coil, it is characterized in that a phase coil, b phase line
Circle, c phase coil all include iron core, low-voltage coil, high-tension coil, and low-voltage coil, high-tension coil are enclosed within outside iron core, low-voltage coil
The conductive contact of interior insulation cardboard side brush coating layer, this side of interior insulation cardboard and low-voltage coil, between low-voltage coil conductor layer
Layer insulation, end are enclosed all using full glue cable paper, and interior insulation cardboard, low-voltage coil wire, layer insulation, end circle are an overall knot
Structure, the layer insulation between the conductor layer of high-tension coil adopts full glue cable paper or big Pedicellus et Pericarpium Trapae lattice point gummed paper, the end circle of high-tension coil
Both sides brush coating layer, the wire of high-tension coil, layer insulation, end circle are an overall structure, outside low-voltage coil, the end circle of high-tension coil
Set gradually cushion block, folder, low-voltage coil, high-tension coil and iron core are by round log rod stretching, a phase coil, b phase coil, c phase line
Gap fagging stretching between circle, arranges insulation board outside a phase coil at two ends, c phase coil, and insulation board passes through top nail and folder phase
Even.
High-tension coil first layer conductor after complete, brush coating layer with no latitude band winding.
High-tension coil outermost is wound around no latitude band.
Insulation board is arc, by pet steel band by tired to insulation board and a phase coil, b phase coil, c phase coil tie up into one whole
Body.
Low-voltage coil wire is Copper Foil.
Glue-line is 1411 glue-lines.
The first head of high-tension coil and merogenesis lead are tight with wood strip folder clamping.
The lead two ends copper bar of low-voltage coil with insulated terminal connect, and with folder be connected to a fixed firm.
A kind of preparation technology of resistance to shorting transformator, comprises the following steps: a phase coil, b phase coil, c phase coil low-voltage line
The layer insulation of circle and end circle, all using full glue cable paper, after the completion of coiling, by press-fiting, heating, make on full glue cable paper
Glue thawing is sticked together with the wire of low-voltage coil, forms an entirety；Layer insulation between the conductor layer of high-tension coil is adopted
With full glue cable paper or big Pedicellus et Pericarpium Trapae lattice point gummed paper, after the completion of coiling, the end circle both sides brush coating layer of high-tension coil, through press-fiting, heating admittedly
Change, so that end is enclosed and become an entirety；High-voltage coil and low-voltage coil is enclosed within iron core, with round log rod, coil and iron core stretching, every phase
Gap fagging stretching between coil, arranges insulation board outside a phase coil at two ends, c phase coil, insulation board is followed closely by top and folder
It is connected.
Wherein, heating is divided into intensification, insulation, 3 stages of cooling, and temperature is raised to 120 DEG C of holding 5-8 hours, then lowers the temperature
To 110 DEG C of holding 2-5 hours, then lower the temperature and come out of the stove.
The invention has the beneficial effects as follows: the present invention passes through special process method on the basis of existing oval conventional transformer,
Layer insulation adopts full glue cable paper, end turn brush coating, allows end circle become an entirety；Low-voltage coil adopts paper tinsel around coil
Use round log rod stretching and between iron core, the measure such as alternate stretching makes coil, iron core, folder become " steel body " structure, and small volume.Should
Scheme, in the case of not increasing the cost of raw material, makes distribution transforming transformator have the ability meeting resistance to shorting, effectively prevents change
Depressor winding buckling deformation in short circuit, creates more profit margins for producing manufacturing firm, makes product have more market competing
Strive power.
(4) brief description
The present invention is further illustrated below in conjunction with the accompanying drawings.
Accompanying drawing 1 is the front view of the present invention；
Accompanying drawing 2 is the right view of accompanying drawing 1；
Accompanying drawing 3 is the top view of accompanying drawing 1；
In figure, 1, folder；2nd, iron core；3rd, cushion block；4th, end circle；5th, high-tension coil；6th, low-voltage coil；7th, insulation board；8th, top nail；9、
Fagging；10th, round log rod.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment includes a phase coil, b phase coil, c phase coil, its special it
Place is: a phase coil, b phase coil, c phase coil all include iron core 2, low-voltage coil 6, high-tension coil 5, low-voltage coil 6, high pressure
Coil 5 is enclosed within outside iron core 2, the interior insulation cardboard side brush coating layer of low-voltage coil 6, this side of interior insulation cardboard and low-voltage coil 6
Conductive contact, the layer insulation between low-voltage coil 6 conductor layer, end enclose 4 all using full glue cable paper, interior insulation cardboard, low pressure
Coil 5 wire, layer insulation, end circle 4 are an overall structure, and the layer insulation between the conductor layer of high-tension coil 5 adopts full glue
Cable paper or big Pedicellus et Pericarpium Trapae lattice point gummed paper, the end circle both sides brush coating layer of high-tension coil 5, the wire of high-tension coil 5, layer insulation, end circle
For an overall structure, outside low-voltage coil 6, the end circle of high-tension coil 5, set gradually cushion block 3, folder 1, low-voltage coil 6, high-voltage line
Circle 5 and iron core 2 are by round log rod 10 stretchings, gap fagging 9 stretching, a at two ends between a phase coil, b phase coil, c phase coil
Insulation board 7 is set outside phase coil, c phase coil, and insulation board 7 is passed through top nail 8 and is connected with folder 1.
High-tension coil 5 first layer conductor, can be with brush coating layer and with no latitude band winding after complete.
High-tension coil 5 outermost can be wound around no latitude band.
Insulation board 7 is arc, is stranded insulation board 7 with a phase coil, b phase coil, c phase coil by pet steel band and ties up into one
Overall.
Low-voltage coil 6 wire is Copper Foil.
Glue-line is 1411 glue-lines.
The first head of high-tension coil 5 and merogenesis lead are tight with wood strip folder clamping.
The lead two ends copper bar of low-voltage coil 6 with insulated terminal connect, and with folder 1 be connected to a fixed firm.
Resistance to shorting transformator technique of the present invention particularly as follows:
1. coiling aspect
(1), low pressure winding adopts paper tinsel around by low pressure winding interior insulation cardboard one side brush 1411 glue, this side is contacted with Copper Foil, low
Pressure winding layer insulation and end insulation adopt full glue cable paper, purpose in the laggard stove heat of coil press mounting, the glue on full gummed paper
Fusing is blended with Copper Foil, and such interior insulation cardboard, Copper Foil, layer insulation, end insulation become an overall structure；(2), high
Line ball circle 5 consolidation to be wound around, prevents the wire movement in short circuit, causes winding buckling deformation, wherein, high-tension coil 5 ground floor
Wire after complete, can one layer of glue of brush and with no latitude band around one layer, increase intensity；(3), between high-voltage winding layer, insulation adopts big Pedicellus et Pericarpium Trapae
Lattice point gummed paper or full glue cable paper, big rib lattice point gummed paper goes out greatly many than the content of common rib lattice point gummed paper glue and coverage rate,
Preferably can blend and become an entirety with high-voltage conducting wires during heating；(4), high-pressure side circle two side brush 1411 glue, when winding pressure
After putting into stove heat solidification, high-pressure side circle becomes an entirety, is equivalent to one " pressing plate " compression wire；(5), in high voltage winding
Group outermost, around two layers of no latitude band, to limit high pressure winding outside diametral force during short circuit；(6), press-fit stove heat of going forward side by side, make line
Circle becomes an overall structure, and heating is divided into intensification, insulation, 3 stages of cooling, and temperature is raised to 120 DEG C of holding 5-8 hours, so
After cool to 110 DEG C holding 2-5 hours, then cooling come out of the stove, preferable temperature be raised to 120 degree keep 6 hours, then cool to
110 degree keep 4 hours, and then cooling is come out of the stove, and the glue on insulating part and wire fully bond, and make coil become an entirety " steel "
Structure.
2. assembling aspect
(1), use round log rod 10 and fagging 9 by the gap stretching between coil and iron core 2, iron core 2 is changed into the bone of low pressure winding
Frame, stops low pressure winding winding contraction distortion inward when by short-circuit force, thus it is inside in short circuit to solve low pressure winding
The destruction to winding for the diametral force.
(2) it is, to prevent high pressure winding tensile force when by short circuit outward, stop high-tension coil 6 external diameter from becoming big, use paper
Plate, alternate stretching, adds arc (insulation board) outside high pressure winding a, c phase, arc does using lamination is wooden, and uses pet steel
Arc and winding are stranded by band to be tied up into an entirety (other structures measure can also be taken to make three-phase coil be integrally formed) and works as height
Pressure winding, when by short-circuit force, can be subject to tensile force wire outward can stretch out, stretch high-voltage conducting wires outward
Space (alternate) stretching, use arc and pet steel band to bundle outside width, length direction has or not latitude band winding, therefore
The space that wire does not stretch out, therefore will not buckling deformation.
(3), because low pressure adopts paper tinsel around structure, axial force is not very big, and coil has had become as a steel body knot
Structure, using conventional cushion block structure, axial force when just can sustain short circuit.
3. lead aspect
(1), the first head of high pressure and merogenesis lead are tight with wood strip folder clamping, prevent power on wire during short circuit from acting on winding.
(2), low-voltage lead two ends copper bar is connected with insulated terminal, and it is firm to be connected to a fixed in folder.
4. Case Experiments On A number innings
It is that the transformator of the oval structure of s13-200/10 adopts this scheme below, the short circuit experiment data done is as follows:
Table 1: short-circuit test current data
Table 2: the test data of short-circuit test tap position 1
Table 3: the test data of short-circuit test tap position 3
Table 4: the test data of short-circuit test tap position 5
Claims (10)
1. a kind of resistance to shorting transformator, including a phase coil, b phase coil, c phase coil it is characterised in that: a phase coil, b phase line
Circle, c phase coil all include iron core, low-voltage coil, high-tension coil, and low-voltage coil, high-tension coil are enclosed within outside iron core, low-voltage coil
The conductive contact of interior insulation cardboard side brush coating layer, this side of interior insulation cardboard and low-voltage coil, between low-voltage coil conductor layer
Layer insulation, end are enclosed all using full glue cable paper, and interior insulation cardboard, low-voltage coil wire, layer insulation, end circle are an overall knot
Structure, the layer insulation between the conductor layer of high-tension coil adopts full glue cable paper or big Pedicellus et Pericarpium Trapae lattice point gummed paper, the end circle of high-tension coil
Both sides brush coating layer, the wire of high-tension coil, layer insulation, end circle are an overall structure, outside low-voltage coil, the end circle of high-tension coil
Set gradually cushion block, folder, low-voltage coil, high-tension coil and iron core are by round log rod stretching, a phase coil, b phase coil, c phase line
Gap fagging stretching between circle, arranges insulation board outside a phase coil at two ends, c phase coil, and insulation board passes through top nail and folder phase
Even.
2. resistance to shorting transformator according to claim 1 it is characterised in that: high-tension coil first layer conductor after complete, brush
Glue-line with no latitude band winding.
3. resistance to shorting transformator according to claim 1 and 2 it is characterised in that: high-tension coil outermost is wound around no latitude band.
4. resistance to shorting transformator according to claim 3 it is characterised in that: insulation board is arc, will absolutely by pet steel band
Listrium is stranded with a phase coil, b phase coil, c phase coil ties up into an entirety.
5. resistance to shorting transformator according to claim 4 it is characterised in that: low-voltage coil wire be Copper Foil.
6. resistance to shorting transformator according to claim 5 it is characterised in that: glue-line be 1411 glue-lines.
7. resistance to shorting transformator according to claim 6 it is characterised in that: the first head of high-tension coil and merogenesis lead wood
Wire clamp clamping is tight.
8. resistance to shorting transformator according to claim 7 it is characterised in that: the lead two ends copper bar of low-voltage coil is with absolutely
Acies connect, and with folder be connected to a fixed firm.
9. a kind of preparation technology of resistance to shorting transformator according to claim 1 it is characterised in that: comprise the following steps: a
Phase coil, b phase coil, the layer insulation of c phase coil low-voltage coil and end circle, all using full glue cable paper, after the completion of coiling, lead to
Cross and press-fit, heat, so that the thawing of the glue on full glue cable paper and the wire of low-voltage coil is sticked together, form an entirety；High pressure
Layer insulation between the conductor layer of coil adopts full glue cable paper or big Pedicellus et Pericarpium Trapae lattice point gummed paper, after the completion of coiling, high-tension coil
End circle both sides brush coating layer, through press-fiting, being heating and curing, makes end enclose and becomes an entirety；High-voltage coil and low-voltage coil is enclosed within iron core, uses
Round log rod, coil and iron core stretching, gap fagging stretching between every phase coil, a phase coil at two ends, c phase coil peripheral hardware
Put insulation board, insulation board is passed through top nail and is connected with folder.
10. resistance to shorting transformator according to claim 9 preparation technology it is characterised in that: heating be divided into intensifications, guarantor
Temperature, 3 stages of cooling, temperature is raised to 120 DEG C of holding 5-8 hours, then cools to 110 DEG C of holding 2-5 hours, then lowers the temperature
Stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967590.4A CN106373756B (en) | 2016-10-31 | 2016-10-31 | A kind of resistance to shorting transformer and its preparation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967590.4A CN106373756B (en) | 2016-10-31 | 2016-10-31 | A kind of resistance to shorting transformer and its preparation technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106373756A true CN106373756A (en) | 2017-02-01 |
| CN106373756B CN106373756B (en) | 2018-01-26 |
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| CN201610967590.4A Active CN106373756B (en) | 2016-10-31 | 2016-10-31 | A kind of resistance to shorting transformer and its preparation technology |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863247A (en) * | 2017-11-13 | 2018-03-30 | 江苏宏源电气有限责任公司 | A kind of preparation method for the high-tension coil for improving anti-sudden short circuit ability |
| CN110186775A (en) * | 2019-06-26 | 2019-08-30 | 哈尔滨理工大学 | Winding insulation radial force simulation method and device when a kind of transformer short-circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5485327A (en) * | 1977-12-21 | 1979-07-06 | Fuji Electric Co Ltd | Winding for electric apparatus |
| CN105097234A (en) * | 2015-08-13 | 2015-11-25 | 王永法 | Anti-short-circuit amorphous-alloy oil-immersed transformer and preparation method thereof |
| CN106057441A (en) * | 2016-08-18 | 2016-10-26 | 吴江变压器有限公司 | Oil-immersed transformer body reinforcement structure capable of enhancing short-circuit withstand ability |
| CN206163284U (en) * | 2016-10-31 | 2017-05-10 | 山东华驰变压器股份有限公司 | Anti short circuit transformer |
-
2016
- 2016-10-31 CN CN201610967590.4A patent/CN106373756B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5485327A (en) * | 1977-12-21 | 1979-07-06 | Fuji Electric Co Ltd | Winding for electric apparatus |
| CN105097234A (en) * | 2015-08-13 | 2015-11-25 | 王永法 | Anti-short-circuit amorphous-alloy oil-immersed transformer and preparation method thereof |
| CN106057441A (en) * | 2016-08-18 | 2016-10-26 | 吴江变压器有限公司 | Oil-immersed transformer body reinforcement structure capable of enhancing short-circuit withstand ability |
| CN206163284U (en) * | 2016-10-31 | 2017-05-10 | 山东华驰变压器股份有限公司 | Anti short circuit transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863247A (en) * | 2017-11-13 | 2018-03-30 | 江苏宏源电气有限责任公司 | A kind of preparation method for the high-tension coil for improving anti-sudden short circuit ability |
| CN110186775A (en) * | 2019-06-26 | 2019-08-30 | 哈尔滨理工大学 | Winding insulation radial force simulation method and device when a kind of transformer short-circuit |
| CN110186775B (en) * | 2019-06-26 | 2022-05-27 | 哈尔滨理工大学 | Method and device for simulating radial stress of winding insulation during short circuit of transformer |
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| Publication number | Publication date |
|---|---|
| CN106373756B (en) | 2018-01-26 |
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