CN109616296A - A kind of capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection - Google Patents
A kind of capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection Download PDFInfo
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- CN109616296A CN109616296A CN201910026803.7A CN201910026803A CN109616296A CN 109616296 A CN109616296 A CN 109616296A CN 201910026803 A CN201910026803 A CN 201910026803A CN 109616296 A CN109616296 A CN 109616296A
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- 238000004804 winding Methods 0.000 claims abstract description 167
- 239000011888 foil Substances 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 238000009826 distribution Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000008033 biological extinction Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004520 electroporation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
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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
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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
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
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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
- H01F27/2847—Sheets; Strips
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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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
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- 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
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- 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
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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
- H01F27/2847—Sheets; Strips
- H01F2027/2857—Coil formed from wound foil conductor
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Abstract
The invention belongs to electroporation fields, disclose a kind of capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection, including iron core, three-phase capacity transfer winding, three capacitance switchs；Every phase capacity transfer winding includes II section of I section of coil of high-voltage winding of axial alignment, high-voltage winding coil；II section of I section of coil of low pressure winding, low pressure winding coil of radial arrangement.The foil coiling of low-voltage coil conduction.II section of coil of I section of coil of low pressure winding and low pressure winding forms width to spiral stepped construction, and the two is along axle center 180 degree rotational symmetry；The high-voltage connection terminal and low-voltage wiring terminal of each capacitance switch are placed in two sides, I section of coil of high-voltage winding, I section of coil of II section of coil of high-voltage winding and low pressure winding the lead-out wire of II section of coil of lead-out wire and low pressure winding connect upwards with capacitance switch from two sides.Capacitance-adjustable transformer outlet of the invention is all in top, and for the connection with capacitance switch apart from short and similar length, three-phase resistance balance is compact-sized small in size, is simple to manufacture.
Description
Technical field
The invention belongs to electroporation fields, are related to capacitance-adjustable transformer, more particularly, to capacitance-adjustable transformer low-voltage side coil
Coiling outlet method and capacitance switch modes of emplacement.
Background technique
Capacitance-adjustable transformer is a kind of distribution transformer of multicapacity, it mainly utilizes the capacity transfer installed on the transformer
Switch changes simultaneously the bind mode of high and low pressure winding when load is lighter, reduces the magnetic flux density in the minds of transformer fe, from
And achieve the purpose that reduce transformer in the no-load loss of light hours.
Dyn11 is designated as to high capacity joint group, low capacity joint group is designated as the capacitance-adjustable transformer of Dyn11 (labeled as Dy
(Dy), principle are as follows: each phase low pressure winding of transformer is made of I and II two sections of coils, and I and II section of coil turn is equal simultaneously
And size is identical；High-voltage winding is also made of equal turn numbers and size identical I and II two sections of coils.Transformer is in high capacity
When, I section and II section of coils from parallel connection of coils of every phase high-voltage winding, then three-phase is connected into D connection again；I section of coil of every phase low pressure winding
With II section of coils from parallel connection of coils, then three-phase is connected into yn connection again；When transformer is in low capacity, I section and II of every phase high-voltage winding
Section coil series connection, then three-phase is still connected into D connection；I section of coil of every phase low pressure winding and II section of coil are connected, then three-phase
Still it is connected into yn connection.
I section of coil of low pressure winding of existing capacitance-adjustable transformer, II section of coil distribution mode there are three types of, one is radial point
It splits, another kind is axial split, the third is that wire type is mixed around mode.The advantages of radial division is, the lead-out wire of two sections of coils
Length is suitable, and the disadvantage is that, two sections of coil radial positions are different, magnetic field environment is widely different, and the total length of two sections of coils is not
Together, cause the both end voltage of two coils different, in the two parallel connection, circulation loss can be generated.The advantages of axial split is,
The radial position of two sections of coils is identical, and two sections of coils can have identical overall circumference, conductive section, resistance, magnetic field environment；And
The disadvantage is that, the length of lead-out wire of one section of coil far from capacitance switch is noticeably greater than drawing for one section of coil close to capacitance switch
Line length out is unfavorable for the resistance balance of two sections of coils.In addition two sections of coils need separation distance in the axial direction.Wire type it is mixed around
Mode is that the conducting wire of two sections of coils is piled up respectively, then the adjacent axial direction of two folded conducting wires and is wound on iron core.This side
For method with the presence of transposition width and helical angle, window fill factor is low, and ampere-turn distribution is uneven, and anti-short circuit capability is poor.
Summary of the invention
In order to solve the volume of existing capacitance-adjustable transformer mesolow winding I section of coil and II section of coil using Dy(Dy) connection
Around structure there are the problem of, the present invention has selected a kind of foil is mixed to carry out coiling low pressure winding around scheme, in this scenario, I section of line
Circle and II section of coil are axially coincident, radial friendship stacking mixing, and the two is along axle center 180 degree rotational symmetry.
This foil is mixed to be around the characteristics of scheme: the lead-out wire of I section of coil of low pressure and II section of coil is not in the same of winding
Side has outlet of the lead-out wire of one section of coil with high-voltage winding coil ipsilateral.Using mixed around scheme based on this foil
The three-phase linear arranged type capacitance-adjustable transformer of capacity transfer winding, if using existing Integral three-phase capacitance switch, capacitance switch
Length direction is arranged along iron core upper yoke, since the high-voltage connection terminal and low voltage terminal of capacitance switch set up separately in width direction
Two sides, then since the lead-out wire of I section of coil of low pressure winding of capacity transfer winding of the present invention is located at the lead-out wire of high-voltage winding coil
Side, then the lead-out wire of I section of coil of low pressure winding need to from the top of iron core upper yoke from side through the other side again upwards and capacity transfer
Switch connection.On the one hand it needs to reserve enough cabling space between capacitance switch and iron core upper yoke, volume of transformer is caused to expand；
On the other hand the cabling manufacturing procedure and cabling difficulty of lead-out wire are increased；The third aspect needs the material of more lead-out wires
Cost；Fourth aspect, the lead-out wire of I section of coil of low pressure winding are considerably longer than the II section of line that can connect capacitance switch directly up
The lead-out wire of circle increases the resistance unbalance rate of two sections of coils.
In this regard, the invention proposes a kind of specifically for the mixed three-phase linear arranged type around capacity transfer Winding Design of above-mentioned foil
Capacitance-adjustable transformer, the capacitance-adjustable transformer using Dy (Dy) convert capacity transfer method, which is characterized in that including iron core, three-phase capacity transfer around
Group, three relatively independent capacitance switchs for being respectively used to control three-phase capacity transfer winding coil connection structure conversion, the iron core
Three-phase core limb be linearly arranged side by side, three-phase capacity transfer winding is set on three-phase core limb,
Every phase capacity transfer winding includes the high-voltage winding being made of equal turn numbers and size identical I and II two sections of coils, by circle
The low pressure winding composition of number equal and size identical I and II two sections of coil compositions；It is characterized in that, the high-voltage winding,
Both low pressure windings axial position is overlapped.II section of I section of coil of the low pressure winding, low pressure winding coil are by the identical metal of size
Foil coiling；I section of coil of the high-voltage winding and II section of coil are by the identical conducting wire coiling of size.High-voltage winding I section of coil, high pressure
II section of coil axial split distribution of winding；The lead-out wire of all coils is stretched out to same axial direction；I section of line of the low pressure winding
The lead-out wire of circle is located at the first side of winding, and the lead-out wire of II section of coil of low pressure winding is located at the opposite with the first side of winding
Second side, the high-voltage winding lead-out wires of coil can be located at the first side or second side；I section of coil of the low pressure winding and low pressure
II section of coil width of winding is to composition spiral stepped construction, and the two is along axle center 180 degree rotational symmetry；
Three capacitance switchs are separately positioned on the position that three-phase capacity transfer winding is respectively corresponded above iron core upper yoke, each capacitance switch
High-voltage connection terminal and low-voltage wiring terminal are placed in the two sides of its width direction, and the length direction of each capacitance switch is perpendicular to three
The orientation of phase capacity transfer winding；
First side of capacity transfer winding and second side respectively correspond the two sides of iron core upper yoke；Positioned at the first side of capacity transfer winding low pressure around
The lead-out wire for needing to connect with capacitance switch in I section of coil of group, needs and adjusts in II section of coil of low pressure winding of second side
Hold the lead-out wire of switch connection and needs what is connect with capacitance switch to draw in the high-voltage winding coil of the first side or second side
Outlet is connect with capacitance switch from the two sides of iron core upper yoke upwards respectively.
Further, II section of the high-voltage winding coil, I section of coil of low pressure winding, low pressure winding coil it is radial by outside to
Inside it is arranged successively.
Further, the lead-out wire of low pressure winding includes and the welding section of metal foil welding and the outlet stretched out from coil
Section.
Two lead-out wires of I section of coil of low pressure winding and two lead-out wires of II section of coil of low pressure winding are along winding axis
Heart 180 degree rotational symmetry.
First side of capacitance switch includes vacuum interrupter Kd1, vacuum interrupter Kdc, vacuum interrupter Kdg, vacuum
Arc-chutes Kd2 and the first wiring pin, the second wiring pin, third wiring pin；First wiring pin respectively with vacuum extinction
The first terminals of room Kd1, the first terminals of vacuum interrupter Kdc are connected, and the second wiring pin is with vacuum interrupter Kdg's
First terminals are connected, and third terminals are connected with the first terminals of vacuum interrupter Kd2.
First lead-out wire of further I section of coil of low pressure winding connects the first wiring pin, and the of I section of coil of low pressure winding
Two lead-out wires connect zero curve；First lead-out wire of II section of coil of low pressure winding connects capacitance-adjustable transformer low-voltage output, low pressure winding II
Second lead-out wire of section coil connects third wiring pin；The first terminals and vacuum interrupter Kdc first of vacuum interrupter Kd1
Terminals are connected, and the second wiring of vacuum interrupter Kd1 terminates capacitance-adjustable transformer low-voltage output；Vacuum interrupter Kdc second
Wiring terminates the second terminals of vacuum interrupter Kdg；The of the first wiring termination vacuum interrupter Kdg of vacuum interrupter Kd2
One terminals, vacuum interrupter Kd2 the second wiring terminal connecting zero line.
Described capacitance switch second side includes vacuum interrupter Kg1, vacuum interrupter Kgc, vacuum interrupter Kgg, vacuum
Arc-chutes Kg2 and the 4th wiring pin, the 5th wiring pin, the 6th wiring pin, the 4th wiring pin and vacuum interrupter Kg1
The first terminals be connected with the first terminals of vacuum interrupter Kgc, the 5th wiring pin connects the first of vacuum interrupter Kgg
Terminals, the 6th wiring pin connect the first terminals of vacuum interrupter Kg2.
Further, first lead-out wire of I section of coil of high-voltage winding connects the 4th wiring pin, I section of coil of high-voltage winding
Second lead-out wire connects the high-voltage output end of adjacent phase；It is defeated that first lead-out wire of II section of coil of high-voltage winding connects capacitance-adjustable transformer high pressure
Second lead-out wire of outlet, II section of coil of high-voltage winding connects the 6th wiring pin；The first terminals of vacuum interrupter Kg1 and true
Empty the first terminals of arc-chutes Kgc are connected, and the second wiring of vacuum interrupter Kd1 terminates capacitance-adjustable transformer high-voltage output end；Very
Empty the second wiring of arc-chutes Kgc terminates the second terminals of vacuum interrupter Kgg；The first wiring termination of vacuum interrupter Kg2 is true
The first terminals of empty arc-chutes Kgg, the second wiring of vacuum interrupter Kg2 terminate the high-voltage output end of adjacent phase；
Finally, by capacitance switch, every phase high-voltage winding I and II two sections of coils and low pressure winding I and II two sections of coils are realized
Series connection and conversion in parallel, and three-phase high-voltage winding forms D connection, and three-phase low-voltage winding forms yn connection.
The medicine have the advantages that one, by by II section of coil design of I section of coil of low pressure winding and low pressure winding be 180
The structure for spending rotational symmetry, is not only consistent the length of lead-out wire of two coils, but also guarantees the geometric parameters of two coils
Number is completely the same, and locating magnetic field environment is the same, compact-sized small in size, is simple to manufacture, and effectively improves the anti-of transformer
Short-circuit capacity, the circulation avoided in two coils generate, also effectively minimize three-phase resistance unbalance factor.Two, it adopts
With single-phase free-standing capacitance switch, it is aided with capacitance switch length direction perpendicular to the placement side in three-phase capacity transfer coils arrangement direction
Formula cooperates the structure of low-voltage copper bar wire outlet at two sides, and length and the extra bending for effectively reducing lead-out wire are tortuous, simplifies and draws
The processing technology of outlet saves lead-out wire material requested, saves production cost, reduces the volume of capacitance-adjustable transformer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a phase capacity transfer winding of capacitance-adjustable transformer of the present invention；
Fig. 2 is the structural schematic diagram of mesohigh winding coil axial split of the present invention；
Fig. 3 is the schematic diagram of capacitance switch set-up mode in the present invention；
Fig. 4 is the mode of connection schematic diagram of first group of vacuum interrupter in the present invention；
The circuit diagram of low-pressure side when Fig. 5 is capacitance-adjustable transformer low capacity；
The circuit diagram of low-pressure side when Fig. 6 is capacitance-adjustable transformer high capacity；
Fig. 7 is the mode of connection schematic diagram of second group of vacuum interrupter in the present invention
Fig. 8 on high-tension side circuit diagram when being capacitance-adjustable transformer low capacity；
Fig. 9 on high-tension side circuit diagram when being capacitance-adjustable transformer high capacity；
In figure: symbol " day " indicates that vacuum interrupter is in "on" position, and symbol " mesh " indicates that vacuum interrupter is in separating brake shape
State；Rd represents the transition resistance of low-pressure side, and Rg represents on high-tension side transition resistance.
Specific embodiment
Technical solution of the present invention is clearly and completely described below by specific embodiment and in conjunction with attached drawing.
In order to make those skilled in the art better understand the present invention program, below in conjunction in the embodiment of the present invention
Attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.Obviously, the embodiments described below are only
It is only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1, a phase capacity transfer winding construction of three-phase capacitance-adjustable transformer shown in this example, including it is radial from outside to inside according to
II section of the high-voltage winding coil of secondary arrangement, I section of coil of low pressure winding, low pressure winding coil；Wherein, I section of coil of low pressure winding, low
Pressure II section of coil of winding is formed by foil wound, and high-voltage winding coil is formed by plain conductor coiling.
Specifically, I coil, II section of coil constitute spiral stepped construction in low pressure winding, along the rotation pair of 180 ° of iron core center
Claim, which includes the first metal foil 2 for I section of coil of coiling, the first insulating layer 20, first extraction of I section of coil of low pressure
Line 21, I section of second lead-out wire of coil 22 of low pressure, for second metal foil 3 of II section of coil of coiling low pressure, second insulating layer 30,
II section of first lead-out wire of coil 31 of low pressure, II section of second lead-out wire of coil 32 of low pressure.
The specific winding method of low pressure winding is as follows:
Low pressure winding insulating board cylinder is sleeved on winding mould by the first step, will be used for first gold medal of I section of coil of coiling low pressure
The end of the end and the second metal foil for II section of coil of coiling low pressure that belong to foil is pulled to from opposite both direction respectively
Winding mould；I section of first lead-out wire of coil 21 of low pressure is welded in the end of first metal foil, and first is enclosed on the inside of the first metal foil absolutely
II section of first lead-out wire of coil 31 of low pressure is welded in edge layer 20, the end of the second metal foil, and second is enclosed on the inside of the second metal foil absolutely
Edge layer 30；The end of first metal foil is fixed on the first side of winding mould by I section of first lead-out wire of coil 21 of low pressure, and second
The end of metal foil is fixed on second side opposite with the first side of winding mould by II section of first lead-out wire of coil 31 of low pressure；
Second step, rotates winding mould, the first metal foil and the second metal foil it is isometric synchronize be wrapped on insulating board cylinder and formed
The I section of coil and II section of coil of spiral stepped construction each other, when reaching target the number of turns, respectively in the first side of winding mould and
The first metal foil and the second metal foil are cut in two sides, and low in the new end welding of the first metal foil and the second metal foil respectively
Press II section of second lead-out wire of coil 32 of I section of second lead-out wire of coil 22 and low pressure.It obtains by II section of line of I section of coil of low pressure and low pressure
The thread mixing coil combined is enclosed, capacitance-adjustable transformer low pressure winding is obtained.
The lead-out wire of I section of coil of low pressure winding is located at the first side of winding, the lead-out wire of II section of coil of low pressure winding
Positioned at second side opposite with the first side of winding.The high-voltage winding coil has I section of coil of high pressure by 200 coiling of metal wire
The first lead-out wire 201, I section of second lead-out wire of coil 203 of high pressure, first lead-out wire 202 of II section of coil of high pressure, II section of high pressure
The second lead-out wire of coil 204 and high-voltage insulation layer 205.The lead-out wire of high-voltage winding coil and drawing for I section of coil of low pressure winding
Outlet is located at the first side of winding.
As shown in Fig. 2, I section of coil 601 of high pressure and II section of coil 602 are distributed in axial split, be centered around whole low pressure around
The periphery of group coil 600.
The two sides of its width direction as shown in figure 3, the connecting terminal of capacitance switch is placed in, the length direction of capacitance switch
Perpendicular to the orientation of three-phase capacity transfer winding；
First group of vacuum interrupter mode of connection as shown in Figure 4, illustrates vacuum interrupter Kd1, and lower end is the first wiring pin
40 and first terminals 41, upper end be the second terminals 42；Vacuum interrupter Kdc, lower end are the first terminals 51, upper end the
Two terminals 52;Vacuum interrupter Kd1, lower end are the second wiring pin 60 and the first terminals 61, and upper end is the second terminals
62；Vacuum interrupter Kd2, lower end are third wiring pin 70 and the first terminals 71, and upper end is the second terminals 72.
Fig. 5, lower-voltage circuit figure shown in fig. 6, diagram upper left side are I section of winding of low pressure, upper right side be II section of low pressure around
Group.
The wiring of lead-out wire and the vacuum interrupter in capacitance switch is as follows:
As shown in Figure 5, Figure 6, first lead-out wire of I section of coil of low pressure winding connects the first wiring pin, I section of coil of low pressure winding
Second lead-out wire connects zero curve；First lead-out wire of II section of coil of low pressure winding connects capacitance-adjustable transformer low-voltage output, low pressure winding
Second lead-out wire of II section of coil connects third wiring pin；The first terminals of vacuum interrupter Kd1 and vacuum interrupter Kdc the
One terminals are connected, and the second wiring of vacuum interrupter Kd1 terminates capacitance-adjustable transformer low-voltage output；Vacuum interrupter Kdc
Two wiring terminate the second terminals of vacuum interrupter Kdg；The first wiring termination vacuum interrupter Kdg's of vacuum interrupter Kd2
First terminals, vacuum interrupter Kd2 the second wiring terminal connecting zero line.
Such as Fig. 7, second group of vacuum interrupter mode of connection illustrates vacuum interrupter Kg1, and lower end is the 4th wiring pin 80
With the first terminals 81, upper end is the second terminals 82；Vacuum interrupter Kgc, lower end are the first terminals 91, upper end second
Terminals 92；Vacuum interrupter Kgg, lower end are the 5th wiring pin 100 and the first terminals 101, and upper end is the second terminals
102；Vacuum interrupter Kg2, lower end are the 6th wiring pin and the first terminals, and upper end is the second terminals；
Such as Fig. 8, Fig. 9, first lead-out wire of I section of coil of high-voltage winding connects the 4th wiring pin, and the second of I section of coil of high-voltage winding
Lead-out wire connects the high-voltage output end of adjacent phase；First lead-out wire of II section of coil of high-voltage winding connects capacitance-adjustable transformer High voltage output
End, second lead-out wire of II section of coil of high-voltage winding connect the 6th wiring pin；The first terminals and vacuum of vacuum interrupter Kg1
The first terminals of arc-chutes Kgc are connected, and the second wiring of vacuum interrupter Kd1 terminates capacitance-adjustable transformer high-voltage output end；Vacuum
The second wiring of arc-chutes Kgc terminates the second terminals of vacuum interrupter Kgg；The first wiring of vacuum interrupter Kg2 terminates vacuum
The first terminals of arc-chutes Kgg, the second wiring of vacuum interrupter Kg2 terminate the high-voltage output end of adjacent phase.
For realize capacitance-adjustable transformer capacity transfer, as shown in figure 5, vacuum interrupter Kd1, Kd2 be separating brake, vacuum interrupter
Kdg, Kdc are to close a floodgate, and are at this time low capacity state；As shown in fig. 6, vacuum interrupter Kd1, Kd2 are become closing a floodgate from separating brake, vacuum
Arc-chutes Kdg, Kdc become separating brake from closing a floodgate, and at the same time, such as Fig. 8, shown in Fig. 9, series-parallel conversion is also completed in high-pressure side, this
Capacitance-adjustable transformer described in sample is just changed into high-capacity state by low capacity state.
Claims (8)
1. a kind of capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection, which is characterized in that including iron core, three-phase capacity transfer around
Group, three relatively independent capacitance switchs for being respectively used to control three-phase capacity transfer winding coil connection structure conversion, the iron core
Three-phase core limb be linearly arranged side by side, three-phase capacity transfer winding is set on three-phase core limb；
Every phase capacity transfer winding includes II section of I section of coil of high-voltage winding of radial arrangement, high-voltage winding coil, I section of line of low pressure winding
II section of circle, low pressure winding coil；It is characterized in that, I section of coil of the high-voltage winding, II section of coil of high-voltage winding, low pressure winding I
II section of section coil, low pressure winding coil axial position are overlapped, II section of I section of coil of high-voltage winding, high-voltage winding coil axial direction
Division distribution, II section of I section of coil of the low pressure winding, low pressure winding coil are by foil wound of same size；Each coil
Both ends are separately connected a lead-out wire, and the lead-out wire of all coils is stretched out to same axial direction；I section of coil of the low pressure winding
Lead-out wire is located at the first side of winding, and the lead-out wire of II section of coil of low pressure winding is located at opposite with the first side of winding
Two sides, I section of lead-out wires of coil of the high-voltage winding, II section of coil of high-voltage winding lead-out wire can be located at the first side or second side；
I section of coil of the low pressure winding and II section of coil turn of low pressure winding are equal, II section of line of I section of coil of low pressure winding and low pressure winding
Circle realizes that series connection and structure in parallel are converted by capacitance switch；I section of coil of the low pressure winding and II section of coil of low pressure winding
Spiral stepped construction is formed, and the two is along axle center 180 degree rotational symmetry；
Three capacitance switchs are separately positioned on the position that three-phase capacity transfer winding is respectively corresponded above iron core upper yoke, each capacitance switch
High-voltage connection terminal and low-voltage wiring terminal are placed in the two sides of its width direction, and the length direction of each capacitance switch is perpendicular to three
The orientation of phase capacity transfer winding；
First side of capacity transfer winding and second side respectively correspond the two sides of iron core upper yoke；Positioned at the first side of capacity transfer winding low pressure around
The lead-out wire connecting with capacitance switch is needed in I section of coil of group, needs and adjusts in II section of coil of low pressure winding of second side
Hold the lead-out wire of switch connection and the need of II section of I section of coil in the first side or second side high-voltage winding, high-voltage winding coil can be located at
The lead-out wire to connect with capacitance switch, connect with capacitance switch from the two sides of iron core upper yoke upwards respectively.
2. the capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection according to claim 1, which is characterized in that described
II section of I section of coil of high-voltage winding, II section of coil of high-voltage winding, I section of coil of low pressure winding, low pressure winding coil are radial from outside to inside
It is arranged successively, II section of I section of coil of high-voltage winding, high-voltage winding coil axial split distribution.
3. the capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection according to claim 1, which is characterized in that low pressure
The lead-out wire of winding includes going out line segment with the welding section of metal foil welding and from coil stretching.
4. the capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection according to claim 3, which is characterized in that described
Two lead-out wires of I section of coil of low pressure winding and two lead-out wires of II section of coil of low pressure winding are rotated along winding axle center 180 degree
Symmetrically.
5. the capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection according to claim 1, which is characterized in that described
The first side of capacitance switch includes vacuum interrupter Kd1, vacuum interrupter Kdc, vacuum interrupter Kdg, vacuum interrupter Kd2 and
One wiring pin, the second wiring pin, third wiring pin；The first terminals of first wiring pin and vacuum interrupter Kd1,
The first terminals of vacuum interrupter Kdc are connected, and the second wiring pin is connected with the first terminals of vacuum interrupter Kdg, the
Three terminals are connected with the first terminals of vacuum interrupter Kd2.
6. the capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection according to claim 5, which is characterized in that low pressure
First lead-out wire of I section of coil of winding connects the first wiring pin, and second lead-out wire of I section of coil of low pressure winding connects zero curve；Low pressure
First lead-out wire of II section of coil of winding connects capacitance-adjustable transformer low-voltage output, and second lead-out wire of II section of coil of low pressure winding connects
Third wiring pin；The first terminals of vacuum interrupter Kd1 are connected with the first terminals of vacuum interrupter Kdc, vacuum extinction
The second wiring of room Kd1 terminates capacitance-adjustable transformer low-voltage output；The second wiring of vacuum interrupter Kdc terminates vacuum interrupter
The second terminals of Kdg；The first terminals of the first wiring termination vacuum interrupter Kdg of vacuum interrupter Kd2, vacuum interrupter
Kd2 the second wiring terminal connecting zero line.
7. the capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection according to claim 1, which is characterized in that described
Capacitance switch second side includes vacuum interrupter Kg1, vacuum interrupter Kgc, vacuum interrupter Kgg, vacuum interrupter Kg2 and
Four wiring pins, the 5th wiring pin, the 6th wiring pin, the first terminals of the 4th wiring pin and vacuum interrupter Kg1
It is connected with the first terminals of vacuum interrupter Kgc, the 5th wiring pin connects the first terminals of vacuum interrupter Kgg, and the 6th
Wiring pin connects the first terminals of vacuum interrupter Kg2.
8. the capacitance-adjustable transformer of three-phase linear arranged type Dy (Dy) connection according to claim 7, which is characterized in that high pressure
First lead-out wire of I section of coil of winding connects the 4th wiring pin, and second lead-out wire of I section of coil of high-voltage winding connects the height of adjacent phase
Press output end；First lead-out wire of II section of coil of high-voltage winding connects capacitance-adjustable transformer high-voltage output end, II section of coil of high-voltage winding
The second lead-out wire connect the 6th wiring pin；The first terminals and the first terminals of vacuum interrupter Kgc of vacuum interrupter Kg1
It is connected, the second wiring of vacuum interrupter Kd1 terminates capacitance-adjustable transformer high-voltage output end；The second terminals of vacuum interrupter Kgc
Connect the second terminals of vacuum interrupter Kgg；The first wiring of the first wiring termination vacuum interrupter Kgg of vacuum interrupter Kg2
End, the second wiring of vacuum interrupter Kg2 terminate the high-voltage output end of adjacent phase.
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| US4874916A (en) * | 1986-01-17 | 1989-10-17 | Guthrie Canadian Investments Limited | Induction heating and melting systems having improved induction coils |
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