CN206210586U - A kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux - Google Patents
A kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux Download PDFInfo
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- CN206210586U CN206210586U CN201621305947.4U CN201621305947U CN206210586U CN 206210586 U CN206210586 U CN 206210586U CN 201621305947 U CN201621305947 U CN 201621305947U CN 206210586 U CN206210586 U CN 206210586U
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- magnetic flux
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- permanent
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Abstract
The utility model is related to a kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux, belongs to technical field of transformer manufacturing.Technical scheme is：Permanent magnetic flux core limb（23）Exciting Windings for Transverse Differential Protection is sequentially arranged from inside to outside（22）With high pressure winding（21）, become magnetic flux core limb（26）Low pressure winding is sequentially arranged from inside to outside（25）, tap-changing windings（24）, adjust string winding（27）With middle pressure winding（28）.The utility model is when high-pressure side carries out pressure regulation, in maintenance, low voltage it is constant, the dielectric level of loaded switch is effectively reduced by the way of Induction Regulation is combined using neutral point pressure regulation, the winding of not pressure regulation is placed on permanent magnetic flux core limb, to maintain its voltage constant, using the singlecore structure of double principal posts, an iron core is shared to realize permanent magnetic flux and become magnetic flux winding, reduces cost, voltage stabilization can be widely used in super, extra-high voltage electric transmission and transformation system.
Description
Technical field
The utility model is related to a kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux, belongs to transformer manufacturing skill
Art field.
Background technology
The terminal voltage of super, extra-high voltage electric transmission and transformation transformer is too high, and pressure regulation is difficult, generally uses neutral point variable flux voltage variation (VFVV),
To reduce the dielectric level requirement of tap changer, but, the problem for thus bringing low voltage to fluctuate；Asked to solve voltage pulsation
Topic, must generally give the winding of voltage pulsation, and a set of compensative winding is set on another iron core, there is complex structure, system
The problems such as making high cost, spread of voltage.
Utility model content
The utility model purpose is to provide a kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux, using neutral point
Pressure regulation is effectively reduced the dielectric level of loaded switch with the mode that Induction Regulation is combined, and the winding of not pressure regulation is placed in into permanent magnetic
It is common to realize permanent magnetic flux and change magnetic flux winding using the singlecore structure of double principal posts to maintain its voltage constant on logical core limb
With an iron core, reduces cost, voltage stabilization solves above mentioned problem present in background technology.
The technical solution of the utility model is：
A kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux, comprising high pressure winding, Exciting Windings for Transverse Differential Protection, becomes magnetic flux iron
Stem, tap-changing windings, low pressure winding, permanent magnetic flux core limb, tune string winding, middle pressure winding and fuel tank, fuel tank inner iron core is used double main
The singlecore structure of post, one of post is permanent magnetic flux core limb, another post to become magnetic flux core limb, permanent magnetic flux core limb by
Be sequentially arranged Exciting Windings for Transverse Differential Protection and high pressure winding from inside to outside, become magnetic flux core limb be sequentially arranged from inside to outside low pressure winding, pressure regulation around
Group, tune string winding and middle pressure winding；The middle pressure winding on high pressure winding and change magnetic flux core limb on permanent magnetic flux core limb is into certainly
Knot is coupled, becomes in parallel with Exciting Windings for Transverse Differential Protection after the tap-changing windings on magnetic flux core limb are concatenated with tune string winding, to permanent magnetic flux core limb
On high pressure winding excitation is provided, tap-changing windings connection shunting switch adjusts the number of turn of tap-changing windings changing by shunting switch
Become the terminal voltage of Exciting Windings for Transverse Differential Protection, so that the voltage of high pressure winding is adjusted；It is middle pressure winding, low in high pressure winding pressure regulation
Pressure winding is located at and becomes on magnetic flux core limb, and voltages keep constant is constant.
The shunting switch is single-phase tap changer, is arranged on transformer end.
The beneficial effects of the utility model are：The utility model when high-pressure side carries out pressure regulation, in maintenance, low voltage it is permanent
It is fixed, the dielectric level of loaded switch is effectively reduced by the way of Induction Regulation is combined using neutral point pressure regulation, will not pressure regulation
Winding be placed on permanent magnetic flux core limb, to maintain its voltage constant, using the singlecore structure of double principal posts, to realize permanent magnetic flux
And becoming the shared iron core of magnetic flux winding, reduces cost, voltage stabilization can be widely used in super, extra-high voltage electric transmission and transformation system.
Brief description of the drawings
Fig. 1 is the utility model embodiment device body coils arrangement figure；
Fig. 2 is the utility model embodiment electrical wiring schematic diagram；
In figure：High pressure winding 21, Exciting Windings for Transverse Differential Protection 22, permanent magnetic flux core limb 23, tap-changing windings 24, low pressure winding 25, change magnetic
Logical core limb 26, tune string winding 27, middle pressure winding 28, fuel tank 29, shunting switch 30.
Specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail.
A kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux, comprising high pressure winding 21, Exciting Windings for Transverse Differential Protection 22, becomes magnetic
Logical core limb 26, tap-changing windings 24, low pressure winding 25, permanent magnetic flux core limb 23, tune string winding 27, middle pressure winding 28 and fuel tank
29, the inner iron core of the fuel tank 29 singlecore structure of double principal posts, one of post is permanent magnetic flux core limb 23, and another post is change magnetic
Logical core limb 26, permanent magnetic flux core limb 23 is sequentially arranged Exciting Windings for Transverse Differential Protection 22 and high pressure winding 21 from inside to outside, becomes magnetic flux core limb
26 are sequentially arranged low pressure winding 25, tap-changing windings 24, adjust string winding 27 and middle pressure winding 28 from inside to outside；Permanent magnetic flux core limb 23
On high pressure winding 21 and the middle pressure winding 28 that becomes on magnetic flux core limb 26 be that self coupling is coupled, become the pressure regulation on magnetic flux core limb 26
Winding 24 is in parallel with Exciting Windings for Transverse Differential Protection 22 after being concatenated with tune string winding 27, is provided to the high pressure winding 21 on permanent magnetic flux core limb 23 and encouraged
Magnetic, the connection shunting switch 30 of tap-changing windings 24 adjusts the number of turn of tap-changing windings 24 to change Exciting Windings for Transverse Differential Protection by shunting switch 30
22 terminal voltage, so that the voltage of high pressure winding 21 is adjusted；In high pressure winding pressure regulation, middle pressure winding, low pressure winding
Positioned at becoming on magnetic flux core limb 26, voltages keep constant is constant.
The shunting switch 30 is single-phase tap changer, is arranged on transformer end.
Embodiment includes low pressure winding LV, middle pressure winding MV, high pressure winding HV, tap-changing windings TV, tune string winding BV, excitation
Winding EV, iron core, fuel tank.Wherein unshakable in one's determination is double main pole structures, and two windings are cased with one of principal post, and coils arrangement is suitable
Sequence is followed successively by from inside to outside：Permanent magnetic flux core limb-Exciting Windings for Transverse Differential Protection EV-high pressure winding HV；Be cased with another principal post four around
Group, coils arrangement order is followed successively by from inside to outside：Become magnetic flux core limb-low pressure winding LV-tap-changing windings TV-tune string winding
BV-middle pressure winding MV.Transformer end is provided with a single-phase shunting switch, and the change magnetic flux for high-pressure side or medium voltage side is adjusted
Pressure.
Claims (2)
1. a kind of permanent, change magnetic flux is total to self coupling three-winding transformer unshakable in one's determination, it is characterised in that comprising high pressure winding（21）, excitation around
Group（22）, become magnetic flux core limb（26）, tap-changing windings（24）, low pressure winding（25）, permanent magnetic flux core limb（23）, adjust string winding
（27）, middle pressure winding（28）And fuel tank（29）, fuel tank（29）The inner iron core singlecore structure of double principal posts, one of post is change
Magnetic flux core limb（26）, another post is permanent magnetic flux core limb（23）, permanent magnetic flux core limb（23）It is sequentially arranged from inside to outside and encourages
Magnetic winding（22）With high pressure winding（21）, become magnetic flux core limb（26）Low pressure winding is sequentially arranged from inside to outside（25）, pressure regulation around
Group（24）, adjust string winding（27）With middle pressure winding（28）；Permanent magnetic flux core limb（23）On high pressure winding（21）With change magnetic flux iron
Stem（26）On middle pressure winding（28）For self coupling is coupled, become magnetic flux core limb（26）On tap-changing windings（24）With tune string winding
（27）With Exciting Windings for Transverse Differential Protection after concatenation（22）Parallel connection, to permanent magnetic flux core limb（23）On high pressure winding（21）Excitation, pressure regulation are provided
Winding（24）Connection shunting switch（30）.
2. a kind of permanent, change magnetic flux according to claim 1 is total to self coupling three-winding transformer unshakable in one's determination, it is characterised in that：Institute
State shunting switch（30）It is single-phase tap changer, is arranged on transformer end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621305947.4U CN206210586U (en) | 2016-12-01 | 2016-12-01 | A kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621305947.4U CN206210586U (en) | 2016-12-01 | 2016-12-01 | A kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206210586U true CN206210586U (en) | 2017-05-31 |
Family
ID=58754567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621305947.4U Active CN206210586U (en) | 2016-12-01 | 2016-12-01 | A kind of self coupling three-winding transformer that is permanent, becoming the common iron core of magnetic flux |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206210586U (en) |
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2016
- 2016-12-01 CN CN201621305947.4U patent/CN206210586U/en active Active
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