CN110459388A - A kind of the continous way dry type transformer winding and its processing method of radial free arrangement - Google Patents
A kind of the continous way dry type transformer winding and its processing method of radial free arrangement Download PDFInfo
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- CN110459388A CN110459388A CN201910825680.3A CN201910825680A CN110459388A CN 110459388 A CN110459388 A CN 110459388A CN 201910825680 A CN201910825680 A CN 201910825680A CN 110459388 A CN110459388 A CN 110459388A
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- 238000004804 winding Methods 0.000 title claims abstract description 198
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- 238000000034 method Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 6
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- 239000011810 insulating material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
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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
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- 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
- H01F41/06—Coil winding
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Abstract
The present invention relates to field transformers, the continous way dry type transformer winding and its processing method of a kind of radial free arrangement are provided, including electromagnetic wire and insulation inner cylinder, electromagnetic wire is wound on insulation inner cylinder, winding is electromagnetic wire along radial free arrangement, its axial direction is the overall structure continuously wound, electromagnetic wire and insulation inner cylinder resin-cast one；The winding method be electromagnetic wire since coiling starting point to other side coiling, axial totality continuous coiling, electromagnetic wire is on winding former by being freely stacked into winding width to highly, without placing layer insulation or turn-to-turn insulation.The present invention substantially increases production efficiency, saves material；The space occupancy of conducting wire in the windings is increased simultaneously, structure is simple, and coiling side is easy, and good mechanical property, and impact resistance is strong, and axial voltage gradient is evenly distributed, and turn-to-turn potential difference is small, and partial discharge quantity is small, substantially increases electric property.
Description
Technical field
The present invention relates to field transformer, especially a kind of dry-type transformer high-voltage winding and its winding method.
Background technique
The dry winding that becomes usually has two kinds of winding methods of sectional circular cartridge type and continous way.
Resin casting dry-type transformer high-tension coil, the structure of general manufacturing firm are all multistage cylindrical layer windings, according to
The height of voltage, general 10kV~35kV high-tension coil are divided into 4 sections to 12 sections, reduce every layer of the number of turns of coil, reduce coil interlayer
Voltage.When carrying out coiling, every section is all equivalent to an independent multi-layer cylindrical coil, and conducting wire voltage between layers Gao Yaoyong interlayer is exhausted
Edge material.As shown in Figure 1, when sectional circular core structure coiling upper layer the number of turns as lower layer's the number of turns or less than lower layer's the number of turns, around
It needs to beat S curved liter layer when making upper layer line section, then places layer insulation.The winding of Continuous winding winding method such as Fig. 2 institute
Show, continuous winding start mostly from the outer diameter of line segment draw, be coiled into an interim line segment, then fallen with hand push, by hand by wire turn into
Row turns over folded, finally to start as one by outer diameter extraction formal line segment.In addition, replacing all sections by even numbers to singular line segment
On line segment outer diameter, therefore all singular line segments are all " anti-section " and all even numbers sections are all positive sections, and positive section is exactly
Coiling is accomplished without the line segment for turning over superimposing thread circle.
It is more complicated when above two structure coiling, spend working hour more, it is higher to the technical requirements of operator.And
For the requirement for meeting insulation distance and electrical strength, distance between distance or cake is needed to increase between section.However voltage is higher, spacing is total
Also bigger, this whole height for resulting in dry-type transformer coil increases, and volume increases, and material consumption increases, product at
This raising.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of continous way dry type transformer windings of radial free arrangement
And its processing method, good electric property is at low cost, and has many advantages, such as high production efficiency.
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of continous way dry type transformer winding of radial free arrangement, including electromagnetic wire and insulation inner cylinder, electromagnetic wire around
On insulation inner cylinder, it is characterised in that: winding is electromagnetic wire along radial free arrangement, and axial direction is the overall knot continuously wound
Structure, electromagnetic wire and insulation inner cylinder resin-cast one.
When it is implemented, winding is equipped with the pressure regulation section of upper and lower basic segment and middle part, pressure regulation section is extracted out from the electromagnetic wire of winding
The binding molding of Shi Junyong Kapton Tape is drawn in tap wire, tap lead bending, after tap lead is inserted in fiber glass coating
Pipe reinforced insulation.
Radial free arrangement, axial overall continuous winding be electromagnetic wire since coiling starting point to other side coiling,
Due to electromagnetic wire itself have height, cannot the winding wire turn as disk-type winding formed along its radial continuous coiling, be
Guarantee that the optimum tight between electromagnetic wire combines, electromagnetic wire coiling has gradient with when arranging, and then gradually fills up winding
Width reaches the width of design to height, very due to the line-spacing between the electromagnetic wire of the structural arrangement to position, radial free arrangement
Small, axial voltage gradient is evenly distributed, and potential difference is very small, therefore there is no need to other insulating materials to be isolated.
For the continous way dry type transformer winding for realizing above-mentioned radial free arrangement, the present invention provides a kind of radial freedom
The continous way dry type transformer winding and its processing method of arrangement, it is characterised in that:
The winding former of horizontal coil winding machine is mounted on coil winding machine main shaft, and the electromagnetic wire with drum is set on the rack, is ready to absolutely
Edge inner cylinder and left and right postive stop baffle equipped with perforation, width at the baffle of postive stop baffle are higher than the design width of winding to ruler to size
Very little, the internal diameter of insulation inner cylinder and left and right postive stop baffle is adapted with the winding former outer diameter of horizontal coil winding machine respectively；
Insulation inner cylinder and left and right postive stop baffle are inserted in winding former, left and right postive stop baffle is located at the left and right of insulation inner cylinder
Side, insulation inner cylinder and left and right postive stop baffle are fixed on winding former；
The coiling starting point of electromagnetic wire is the left or right side of insulation inner cylinder, and electromagnetic wire is since coiling starting point to another
Side coiling, the width that the winding width that electromagnetic wire stacks is pre-designed to height is to size, and electromagnetic wire is along radial free arrangement；
Axial totality continuous coiling, electromagnetic wire, by above-mentioned winding width is freely stacked into height, are not necessarily on winding former
Interlayer and turn-to-turn insulation are placed,
Limit stop ring is equipped with the laser limiter of control coil winding machine start and stop, when electromagnetic wire stack height exceeds design size
When, laser limiter output signal, coil winding machine stops working, and coiling work adjusts the width of electromagnetic wire to height, then proceedes to start
Coil winding machine work；
In electromagnetic wire coiling, the number of turns of the counter metering electromagnetic wire coiling of coil winding machine carries out shaping, completes winding
Coiling.
When it is implemented, the periphery of left and right postive stop baffle is respectively corresponded equipped with regulating tank, left and right can be passed through by being equipped with locating rod
The corresponding regulating tank of postive stop baffle；Servo motor, servo motor energy band are coaxially housed on the coil winding machine main shaft of winding former side
The spacing of dynamic arrangement advanced in unison of the locating rod with electromagnetic wire, the radial size of control winding, locating rod and insulation inner cylinder be around
Group width is to height, and when electromagnetic wire coiling, locating rod plays the role of the width of electromagnetic wire to altitude location.
The structure that servo motor drives locating rod mobile, it is very more in the prior art, such as gear drive, screw rod transmission
Deng.When it is implemented, locating rod be worm screw, be connected on coil winding machine main shaft with support rod, servo motor output shaft be connected with
The compatible turbine of worm screw, servo motor work, by turbine and worm structure, can drive the movement of locating rod.
When it is implemented, being equipped with automatic electric magnet-wire organiser, automatic electric magnet-wire organiser includes arrangement bar and arrangement pillar,
Arrangement bar can move up and down on arrangement pillar, and arrangement bar is parallel to each other with winding former, be located at around line side；Rack is equipped with automatic
Drum guide rail, drum can move left and right on automatic drum guide rail, and unwrapping wire ring is cased on electromagnetic wire, and electromagnetic wire is located under arrangement bar
Face, unwrapping wire ring are located at the upper surface of arrangement bar.
When it is implemented, the upper end and left and right end of left and right postive stop baffle are connected with raised line, above-mentioned regulating tank is located at limit
At the raised line of position baffle.
It is freely stacked when it is implemented, being pressed on winding former when electromagnetic wire, coiling work strikes plate with electromagnetic wire and protects electromagnetic wire
Trend, by the width of locating rod to positioning action, strike plate cooperation adjustment winding around linear dimension.
When it is implemented, when winding be equipped with tap wire when, winding be equipped with upper and lower basic segment and middle part tap section, by around
The counter of line machine measures the number of turns at electromagnetic wire coiling tap, when the design that the number of turns at tap reaches winding taps the number of turns,
Basic segment coiling in completion, electromagnetic wire bending are drawn, and then proceed to coiling, other tap positions of the tap section coiling at middle part are same
Sample measures the number of turns that electromagnetic wire coiling needs the place of tap position by the counter of coil winding machine, and magnet-wire bending is drawn, in completion
After the tap section in portion, continue basic segment under coiling.Tap lead bending draw Shi Junyong Kapton Tape binding molding, after will
Tap lead is inserted in glass fibre sleeve reinforced insulation.
The coiling starting point of electromagnetic wire is the left or right side of insulation inner cylinder, and electromagnetic wire is since coiling starting point to another
Side coiling, locating rod follow electromagnetic wire to move together by the Serve Motor Control by mold.The winding width that electromagnetic wire stacks is to height
The width to be pre-designed is spent to size, and electromagnetic wire is coaxially equipped with servo along the coil winding machine main shaft by radial free arrangement, line mould
Motor, the locating rod installed on servo motor control front and back trend by turbine and worm, with the arrangement advanced in unison of electromagnetic wire, control
The radial size of winding processed.Limit stop ring is equipped with the laser limiter of control coil winding machine start and stop, when electromagnetic wire stack height is super
Out when design size, laser limiter output signal, the servo motor of coil winding machine stops working, drum and the arrangement of automatic electric magnet-wire
Device, which synchronizes, to stop working.Axial totality continuous coiling, electromagnetic wire is on winding former by being freely stacked into above-mentioned winding width to height
Degree, without placing layer insulation, in electromagnetic wire coiling, the number of turns of the counter metering electromagnetic wire coiling of coil winding machine works as the number of turns
Extract tap lead when reaching design the number of turns of winding out, the binding molding of Shi Junyong Kapton Tape is drawn in tap lead bending,
Tap lead is inserted in glass fibre sleeve afterwards, shaping is carried out, completes the coiling of winding.
The invention has the following advantages:
1, winding construction and method of winding that the present invention program provides, put since the more conventional winding construction of worker operation has lacked
It setting layer insulation, plays the requirement of the techniques such as the curved liter layer of S, trapezoidal arrangement, close coiling, worker only needs pilot coiling direction,
Do not make the gradient excessive, substantially increases production efficiency.
2, winding construction and method of winding that the present invention program provides, the turn-to-turn voltage after electromagnetic wire is freely arranged are much low
In the voltage between layers of traditional winding, partial discharge quantity is far smaller than traditional winding, substantially increases electric property.
3, winding construction and method of winding that the present invention program provides cancel the layer insulation of every layer of conducting wire, save material
Material；The space occupancy of conducting wire in the windings is increased simultaneously, same sectional area of wire can be such that winding volume reduces, and save
Cost.
4, winding construction and method of winding that the present invention program provides, structure is simple, and coiling side is easy, and mechanical performance
Good, impact resistance is strong, and axial voltage gradient is evenly distributed, and turn-to-turn potential difference is small, and partial discharge quantity is small, improves power supply matter
Amount, increases the service life of transformer.
Detailed description of the invention
Fig. 1 is the schematic diagram of prior-art fragmentation cylindrical structure winding.
Fig. 2 is the schematic diagram of prior art continuous structure winding.
Fig. 3 is the structural schematic diagram of winding of the embodiment of the present invention.
Fig. 4 is the wiring schematic diagram after winding of embodiment of the present invention casting complete.
Fig. 5 is the number of turns schematic illustration of winding of the embodiment of the present invention.
Schematic diagram when Fig. 6 is winding technique of the embodiment of the present invention.
Fig. 7 is the schematic diagram of postive stop baffle of the embodiment of the present invention.
In figure: 1 drum, 2 postive stop baffles, 3 winding formers, 4 electromagnetic wires, 5 insulation inner cylinders, 6 locating rods, 7 laser limiters, 8
Automatic drum guide rail, 9 automatic electric magnet-wire organisers, 10, servo motor, 11 coil winding machine main shafts, 12 unwrapping wire rings, 13 turbines, 21 are adjusted
Save connector lug, a basic segment, b tap under slot, 22 raised lines, 23 epoxy resin, 91 arrangement bars, 92 arrangement pillars, the upper connector lug of X, A
Section.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in fig. 3 to 7, the embodiment of the present invention has selected model SCB12-400/10-0.4 dry-type transformer, provides one
The continous way dry type transformer winding of the radial free arrangement of kind, including electromagnetic wire 4 and insulation inner cylinder 5, electromagnetic wire 4 are wound in insulation
On cylinder 5, winding upper end is the upper connector lug X of 4 starting point of winding magnetic wire connection, and winding lower end is 4 end of winding magnetic wire company
The lower connector lug A connect, the tap section b equipped with upper and lower basic segment a and middle part are tapped in section b and are extracted tap out from the electromagnetic wire 4 of winding
Line, there are six tap wires for the present embodiment.Winding is electromagnetic wire 4 along radial free arrangement, and axial direction is the overall knot continuously wound
Structure, electromagnetic wire 4 and insulation inner cylinder 5 are poured one with epoxy resin 23.
Radial free arrangement, axial overall continuous winding be electromagnetic wire 4 since coiling starting point to other side coiling,
Since electromagnetic wire 4 has height in itself, and the winding wire turn as disk-type winding is not needed along its radial positive and negative cake of coiling, to protect
The optimum tight demonstrate,proved between electromagnetic wire 4 combines, and 4 coiling of electromagnetic wire has gradient with when arranging, and then gradually fills up winding
Width reaches the width of design to height, very due to the line-spacing between the electromagnetic wire 4 of the structural arrangement to position, radial free arrangement
Small, axial voltage gradient is evenly distributed, therefore turn-to-turn potential difference is small, and there is no need to the insulating materials such as other insulating papers to be isolated
Deng.
As Fig. 6 and Fig. 7 provide a kind of continous way dry type transformation of radial free arrangement in conjunction with shown in Fig. 3, Fig. 4 and Fig. 5
Device winding and its processing method:
The winding former of horizontal coil winding machine is mounted on coil winding machine main shaft, and the electromagnetic wire with drum is set on the rack, is ready to absolutely
Edge inner cylinder 5 and left and right postive stop baffle 2 equipped with perforation, the width at the baffle of postive stop baffle 2 are slightly above the design of winding to size
To size, the internal diameter of insulate inner cylinder 5 and left and right postive stop baffle 2 is adapted with 3 outer diameter of the winding former of horizontal coil winding machine width respectively；It is left
The upper end and left and right end of right limit baffle 2 are connected with raised line 22, and regulating tank 21 is located at the raised line 22 of postive stop baffle 2.
Insulation inner cylinder 5 and left and right postive stop baffle 2 are inserted in winding former 3, and left and right postive stop baffle 2 is located at the left and right sides of insulation inner cylinder 5, absolutely
Edge inner cylinder 5 and left and right postive stop baffle 2 are fixed on winding former 3；Automatic electric magnet-wire organiser 9 includes arrangement bar 91 and arrangement pillar
92, arrangement bar 91 can move up and down on arrangement pillar 92, and arrangement bar 91 is parallel to each other with winding former 3, be located at around line side；Rack
It is equipped with automatic drum guide rail 8, drum 1 can move left and right on automatic drum guide rail 8, unwrapping wire ring 12 is cased on electromagnetic wire, electricity
Magnet-wire is located at arrangement bar in the following, unwrapping wire ring 12 is located at the upper surface of arrangement bar 91.
Servo motor is coaxially housed, servo motor can drive locating rod 6 with electromagnetism on the coil winding machine main shaft of winding former side
The spacing of the arrangement advanced in unison of line, the radial size of control winding, locating rod 6 and insulation inner cylinder is winding width to height, electric
When magnet-wire coiling, locating rod 6 plays the role of the width of electromagnetic wire to altitude location.The left and right end of locating rod 6 is equipped with external screw thread.
In the embodiment of the present invention, locating rod 6 is worm screw, is connected on coil winding machine main shaft with support rod, servo motor output
Axis connection has turbine 13 compatible with worm screw, and servo motor work by turbine and worm structure, can drive the shifting of locating rod 6
It is dynamic.
Coiling starting point is the left or right side of insulation inner cylinder 5, and 4 starting point of electromagnetic wire extracts upper connector lug X, electromagnetic wire 4 out
To other side coiling since coiling starting point, locating rod 6 is mounted on servo motor 10, between locating rod 6 and insulation inner cylinder 5
Away from being winding width to height, when 4 coiling of electromagnetic wire, locating rod 6 plays the role of the width of electromagnetic wire 4 to altitude location；Laser is limited
Position device 7 is mounted on by raised line 22, and limit height is set as the radial height of Winding Design.
The width that the winding width that electromagnetic wire 4 stacks is pre-designed to height is to size, and electromagnetic wire 4 is in automatic drum guide rail 8
With the radial free arrangement of co-operating lower edge of automatic electric magnet-wire organiser 9, axial totality continuous coiling, electromagnetic wire 4 is in coiling
On mould 3 by be freely stacked into above-mentioned winding width to height, without placing layer insulation, when electromagnetic wire 4 on winding former 3 by from
By stacking, coiling work protects the trend of electromagnetic wire 4 with plate is struck, and by the width of locating rod 6 to positioning action, strikes plate cooperation adjustment winding
Around linear dimension.
In the embodiment of the present invention, be equipped with tap wire when, winding be equipped with upper and lower basic segment a and middle part pressure regulation section b, by around
The counter of line machine measures the number of turns at 4 coiling tap of electromagnetic wire, when the design that the number of turns at tap reaches winding taps the number of turns,
Basic segment a coiling in completion, 4 bending of electromagnetic wire are drawn, and are bound and are formed with Kapton Tape, after tap lead is inserted in glass
Fiber sleeve, then proceedes to coiling, and other tap positions of the tap section b coiling at middle part equally pass through the counter counts of coil winding machine
Amount 4 coiling of electromagnetic wire needs the number of turns at the place of tap position, and magnet-wire bending is drawn.It completes after the tap section b at middle part it is necessary to taking out circle
The most tap VII and VIII of number reserves process length after conducting wire bending by drawing, by conducting wire between bending line top
It is disconnected, it is divided into 2 individual electromagnetic wires, tap VII and VIII point is opened, the conducting wire individually disconnected to two carries out lead wrapping, uses
Kapton Tape binding molding, after tap lead is inserted in glass fibre sleeve, then two are tapped with glass fiber tape
Lead tightens, and two leads is made to have enough insulation distances.It is further continued for the lower basic segment a of coiling, while the counter of coil winding machine
The number of turns for measuring 4 coiling of electromagnetic wire, when the number of turns reaches design the number of turns of winding, end extracts lower connector lug A out, carries out shaping, use
Insulation material backing strap expires the end of winding and the gap of postive stop baffle 2, guarantees the high consistency of winding
After the coiling for completing winding, laser limiter 7 of dismantling, locating rod 6 and is used according to the position for passing through regulating tank 21
Nut fastening, left and right postive stop baffle 2, locating rod 6 and it is winding integrated unload coil winding machine, after the assay was approved, load onto external mold, carry out ring
Oxygen resin-cast.
The present invention is using novel radial free arrangement, axial overall continuous winding, and winding uses horizontal coiling, coiling
When conducting wire freely stack, without the arrangement by the traditional structures pilot such as sectional circular cartridge type, continous way.winder installed mold
Tool and end postive stop baffle 2, when coiling, only need the radial size of pilot, do not exceed the external mold height of coil,
It without placing layer insulation, does not need to beat that S is curved to allow conducting wire to rise layer yet, does not need more to be satisfaction as traditional winding around to around complete
Winding former 3 is turned around another half-segment of coiling after one half-segment.Since the more conventional winding construction of worker operation has lacked placement interlayer
Insulation, beat the curved liter layer of S, trapezoidal arrangement, close coiling, mold turn around etc., and techniques require, worker only needs pilot coiling side
To not making the electromagnetic wire gradient excessive.The production time of each winding saves 50% or more than conventional structure, and experienced operator can
, one day can be with 8-9 winding of coiling to accomplish 1 hour high-tension coil, and traditional winding one day can only be coiling 3-4, it is raw
It produces efficiency and improves 2 times or more.
The structure that the present invention uses, since its axis of winding size is higher, heat dissipation area increase, due to radial size compared with
Small, the heat transfer performance of winding is preferable, and the structure of transformer tends to be tall and thin, reduces 3k- compared with conventional structure transformer in terms of temperature rise
5K or so.
Through overtesting and comparison, applicant selects the transformer of capacity 50kVA-1600kVA, for according to the present embodiment,
The dosage of the main raw material(s) of the various capacity dry-type transformers of production compares.Specifically it is shown in Table shown in 1- table 4.
Table 1: the embodiment of the present invention and conventional structure winding copper wire dosage contrast table
Table 2: the embodiment of the present invention and conventional structure silicon steel sheet dosage contrast table
Table 3: the embodiment of the present invention and conventional structure resin contrast table
Table 4: the embodiment of the present invention and conventional structure transformer weight contrast table
The winding of transformer of the invention eliminates between the section of traditional winding distance, the more traditional winding of axial height between cake
Reduce 50mm-70mm.Layer insulation is eliminated, radial thickness reduces 4mm-7mm compared with conventional sleeve group.Conducting wire arrangement is closeer
Collection, space utilization rate is bigger, therefore winding volume is smaller, improves the utilization rate of iron core barred window, and silicon steel material saves 3% or more.
The winding of transformer of the invention due to using innovation structure, the superiority that transformer possesses in terms of temperature rise,
So that selectable optimization route is more when design scheme.The new year-on-year traditional transformer of transformer overall volume reduces 5%-8%,
Amount of resin saves 3%-5%, and interlayer dielectic is saved completely, and conducting wire gross weight saves 3% or more, and winding totle drilling cost is saved
5% or more, transformer totle drilling cost saves 3%-6%.
The embodiment of the present invention has selected model SCB12-400/10-0.4 dry-type transformer to be tested, capacity 400
Kilovolt-ampere, Connection series number Dyn11,50 hertz of frequency, the number of phases be 3 phases, test data is as follows:
Voltage uses measuring instrument for JYT-A no-load voltage ratio tester than measuring and coupling deck label calibrating.Voltage than measurement and
Couple deck label and examine and determine conclusion: Error Absolute Value is not more than 0.4%, qualification.5 voltages are specifically shown in Table than measuring and coupling deck label
Certificate test table.
Table 5: voltage is than measuring and coupling deck label certificate test table
The measuring instrument that winding resistance measurement uses is JYR-10 double-channel transformer instrument for measuring DC resistance, environment temperature
Degree: 8.5 DEG C.Winding resistance measures conclusion: high and low pressure winding line resistance is not more than 2%, draws if any neutral point, measures respectively
Phase, line D.C. resistance, phase resistance are not more than 4%.It is qualified.Specifically it is shown in Table 6 winding resistances measurement test table.
Table 6: winding resistance measurement test table
Winding over the ground and D.C. isolation resistance measurement between winding, uses measuring instrument for Insulation Resistance Tester XD2905,
It by record environment temperature and humidity, is measured one by one by standard regulation, and test result is confirmed, then measured again
Next group, when measurement, application voltage is 2500V.D.C. isolation resistance measurement conclusion is qualification to winding over the ground and between winding.Specifically
It is shown in Table 7 windings D.C. isolation resistance measurement test table over the ground and between winding.
Table 7: winding over the ground and between winding D.C. isolation resistance measurement test table
It insulate customary (applying pressure test outside), conclusion: test voltage electric current is stablized in test period, is no different in transformer
Sound is qualified.Specifically it is shown in Table 8 insulation customary (applying pressure test outside) test table.
Table 8: insulate customary (applying pressure test outside) test table
It insulate customary (induced over voltage withstand test), is tested using NSW-TTCS power transformer test microcomputer control system, knot
By: it is qualified.Specifically it is shown in Table 9 insulation customary (induced over voltage withstand test) test table.
Table 9: insulate customary (induced over voltage withstand test) test table
No-load loss and no-load current measurement, are tested, knot using NSW-TTCS power transformer test microcomputer control system
By: it is qualified.Specifically it is shown in Table 10 no-load loss and no-load current measurement test table.
Table 10: no-load loss and no-load current measurement test table
| Project | Measured value | Standard value | Design value |
| No-load loss (W) | 762 | 785 | 767 |
| No-load current (%) | 0.36 | 1.2+0% | 0.59 |
| Conclusion | It is qualified | It is qualified | It is qualified |
Short-circuit impedance and load loss measurement, are tested, knot using NSW-TTCS power transformer test microcomputer control system
By: apply and be not less than 50% rated current, measures its load loss and impedance voltage is qualified.It is specifically shown in Table 11 short-circuit impedances and bears
Load-loss measurement test table.
Table 11: short-circuit impedance and load loss measurement test table
| Project | Measured value | Standard value | Design value |
| Load loss (W) | 3821 | 3990 | 3867 |
| Impedance voltage (%) | 4.01 | 4.0+10% | 4.15 |
| Conclusion | It is qualified | It is qualified | It is qualified |
Measurement of partial discharge, conclusion are qualification.Specifically it is shown in Table 12 measurement of partial discharge test tables.
Table 12: measurement of partial discharge tests table
Conventional dry becomes high-voltage winding and generally uses sectional circular core structure, and voltage between layers is between 600V-1400V, interlayer
Insulation thickness 0.2-0.6mm, every millimeter of field strength voltage 1500V or more.Casting process slightly mistake shelf depreciation will be higher than state
10PC as defined in family's standard.The height of transformer winding of the present invention axially used is higher, and radial size is smaller, and interlayer is not present
Concept, conducting wire freely arrange after turn-to-turn voltage well below traditional winding voltage between layers, partial discharge quantity far smaller than pass
System winding.Test result shows that new structural partial discharge of transformer amount can accomplish 5pC hereinafter, and to casting process
It is low compared with the requirement of change is routinely done with worker operation level requirement, related personnel is trained convenient for company.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of continous way dry type transformer winding of radial free arrangement, including electromagnetic wire and insulation inner cylinder, electromagnetic wire are wound on
It insulating on inner cylinder, it is characterised in that: winding is electromagnetic wire along radial free arrangement, and axial direction is the overall structure continuously wound,
Electromagnetic wire and insulation inner cylinder resin-cast one.
2. a kind of continous way dry type transformer winding of radial free arrangement according to claim 1, it is characterised in that: around
Group is equipped with the pressure regulation section of upper and lower basic segment and middle part, and pressure regulation section extracts tap wire out from the electromagnetic wire of winding, and tap lead bending is drawn
Shi Junyong Kapton Tape binding molding out, after tap lead is inserted in glass fibre sleeve reinforced insulation.
3. the continous way dry type transformer winding and its processing method of a kind of radial free arrangement, it is characterised in that:
The winding former of horizontal coil winding machine is mounted on coil winding machine main shaft, and the electromagnetic wire with drum is set on the rack, is ready in insulation
Cylinder and the left and right postive stop baffle equipped with perforation, width at the baffle of postive stop baffle are higher than the design width of winding to size to size,
The internal diameter of insulation inner cylinder and left and right postive stop baffle is adapted with the winding former outer diameter of horizontal coil winding machine respectively；
Insulation inner cylinder and left and right postive stop baffle are inserted in winding former, left and right postive stop baffle is located at the left and right sides of insulation inner cylinder,
Insulation inner cylinder and left and right postive stop baffle are fixed on winding former；
The coiling starting point of electromagnetic wire be insulate inner cylinder left or right side, electromagnetic wire since coiling starting point to the other side around
System, the width that the winding width that electromagnetic wire stacks is pre-designed to height is to size, and electromagnetic wire is along radial free arrangement；
Axial totality continuous coiling, electromagnetic wire, by above-mentioned winding width is freely stacked into height, are not necessarily to place on winding former
Interlayer and turn-to-turn insulation,
Limit stop ring is equipped with the laser limiter of control coil winding machine start and stop, when electromagnetic wire stack height exceeds design size,
Laser limiter output signal, coil winding machine stop working, and coiling work adjusts the width of electromagnetic wire to height, then proceed to starting coiling
Machine work；
In electromagnetic wire coiling, the number of turns of the counter of coil winding machine metering electromagnetic wire coiling carries out shaping, complete winding around
System.
4. the continous way dry type transformer winding and its processing method of a kind of radial free arrangement according to claim 3,
It is characterized by: the periphery of left and right postive stop baffle is respectively corresponded equipped with regulating tank, left and right postive stop baffle can be passed through by being equipped with locating rod
Corresponding regulating tank；Servo motor is coaxially housed, servo motor can drive locating rod on the coil winding machine main shaft of winding former side
With the arrangement advanced in unison of electromagnetic wire, the radial size of control winding, the spacing of locating rod and insulation inner cylinder is winding width to height
Degree, when electromagnetic wire coiling, locating rod plays the role of the width of electromagnetic wire to altitude location.
5. the continous way dry type transformer winding and its processing method of a kind of radial free arrangement according to claim 4,
It is characterized by: locating rod is worm screw, it is connected on coil winding machine main shaft with support rod, servo motor output shaft is connected with and worm screw
Compatible turbine, servo motor work, by turbine and worm structure, can drive the movement of locating rod.
6. the continous way dry type transformer winding and its processing method of a kind of radial free arrangement according to claim 3,
It is characterized by: being equipped with automatic electric magnet-wire organiser, automatic electric magnet-wire organiser includes arrangement bar and arrangement pillar, bar energy of arranging
It is moved up and down on arrangement pillar, arrangement bar is parallel to each other with winding former, is located at around line side；Rack is equipped with automatic drum and leads
Rail, drum can move left and right on automatic drum guide rail, and unwrapping wire ring is cased on electromagnetic wire, and electromagnetic wire is located at arrangement bar in the following, putting
Wire loop is located at the upper surface of arrangement bar.
7. the continous way dry type transformer winding and its processing method of a kind of radial free arrangement according to claim 3,
It is characterized by: the upper end and left and right end of left and right postive stop baffle are connected with raised line, above-mentioned regulating tank is located at postive stop baffle
At raised line.
8. the continous way dry type transformer winding and its processing method of a kind of radial free arrangement according to claim 3,
It is freely stacked it is characterized by: being pressed on winding former when electromagnetic wire, coiling work strikes plate with electromagnetic wire and protects electromagnetic wire trend, passes through
The width of locating rod to positioning action, strike plate cooperation adjustment winding around linear dimension.
9. the continous way dry type transformer winding and its processing method of a kind of radial free arrangement according to claim 3,
It is characterized by: winding is equipped with the tap section of upper and lower basic segment and middle part when winding is equipped with tap wire, pass through the meter of coil winding machine
Number device measures the number of turns at electromagnetic wire coiling tap, when the design that the number of turns at tap reaches winding taps the number of turns, base in completion
This section of coiling, electromagnetic wire bending are drawn, and then proceed to coiling, other tap positions of the tap section coiling at middle part equally by around
The counter metering electromagnetic wire coiling of line machine needs the number of turns at the place of tap position, and magnet-wire bending is drawn, and completes the tap at middle part
Duan Hou continues basic segment under coiling；The binding molding of Shi Junyong Kapton Tape is drawn in tap lead bending, after by tap lead
It is inserted in glass fibre sleeve reinforced insulation.
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| CN110459388B (en) | 2024-04-09 |
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