CN105206408B - A kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking - Google Patents
A kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking Download PDFInfo
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- CN105206408B CN105206408B CN201510649180.0A CN201510649180A CN105206408B CN 105206408 B CN105206408 B CN 105206408B CN 201510649180 A CN201510649180 A CN 201510649180A CN 105206408 B CN105206408 B CN 105206408B
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- side winding
- wrecking
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Abstract
The invention discloses a kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking, it is characterised in that comprise the steps：The primary side winding being looped around on annular core is evenly arranged by step SS1；The vice-side winding being looped around on annular core is divided into two pieces by step SS2, and each piece of vice-side winding is reduced to 1 arrowband；Two pieces of vice-side windings are arranged symmetrically in the both sides of annular core, export after the line bag series connection of two pieces of vice-side windings；During step SS3 envelope shell, the centrage of the vice-side winding is directed at into the diagonal of the shell, and is packaged along 45 degree of angles.The present invention is symmetrical using vice-side winding, the manufacturing process of 45 degree of angle encapsulation, voltage transformer can be made successfully to resist power frequency magnetic field harassing and wrecking, by power frequency magnetic field EMC certifications.
Description
Technical field
The present invention relates to a kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking, belongs to electromagnetic compatibility
Technical field.
Background technology
Electromagnetic compatibility (Electromagnetic Compatibility EMC) its definition is：Equipment or system are in its institute
Energy normal work in the electromagnetic environment at place, and the ability of the electromagnetic disturbance that anything composition in the environment can not born.
EMC technical significances increasingly increase, and have both sides reason：First, electronic equipment is increasingly complicated, particularly analog circuit sum
The situation of word circuit mixing day by day increases, the operating frequency more and more higher of circuit, and the interference that result between circuit is more serious.
Second, in order to ensure that electronic equipment reliablely and stablely works, increasing country starts to enforce EMC standards.Electronics electricity
The Electro Magnetic Compatibility of device product is a very important technical specification, it be not only related to product itself safety, can
By property, also it is related to the protection problem of electromagnetic environment.
Where having electric current to flow through all can inductive magnetic field, power frequency magnetic field harassing and wrecking be the most commonly seen one kind of electromagnetic disturbance.
It is 50Hz in the frequency of China's power frequency magnetic field.The national standard of power frequency magnetic field noise immunity is GB/T17626.8, GB/T17626.8
In the case that standard is exactly in order to check that equipment or system nearby have power frequency magnetic field, the resistivity to magnetic field.
Under normal circumstances, the stabilizing magnetic field by produced by power current is relatively small, but under nonserviceabling, electric current companion
Raw magnetic field is just stronger.In the presence of power frequency magnetic field, electrical protection apparatus may generating routine it is disorderly, internal storage data is lost
Lose, or even misoperation occur, endanger the safe operation of electrical network.Transformer is to arrive the information transmission of electrical network high voltage, high current
Low-voltage, the metering of small current secondary device side, measuring instrumentss and relay protection, a kind of special transformer of automaton.Mutually
The quality of sensor performance, directly influences the reliability of power system measuring, the accuracy of metering and relay protection action
Property.So the immunity to interference performance of the power frequency magnetic field in order to ensure electrical protection apparatus, it is necessary to the transformer that the equipment of raising is used
Power frequency magnetic field noise immunity performance.
The sketch of two kinds of processing technology of voltage transformer is as shown in figure 1, there is two windings on its iron core.Primary side winding circle
Number is 5000～8000 circles, and vice-side winding is then primary side winding(i.e. 0.25%～2%), so vice-side winding exists
One piece that very little is only occupied on annular core is fan-shaped.
Processing technology in the market as shown in the left figure of Fig. 1, by 5000 circle line of former limit uniformly around in 360 degree of areas of iron core
On domain, in primary side winding after insulating barrier, screen layer, one piece " aliasing area " is selected to arrange Secondary Winding.Shown in Fig. 1 right figures,
Former limit occupies 300 region of iron core, and secondary occupies 10 regions, do not connect up in remaining 50 fan section, to strengthen the isolation of former secondary
Level.
If adopting both the above production technology, primary side winding is uniformly distributed, then, under the harassing and wrecking of power frequency magnetic field, former limit is not
Armature-reaction can be produced.The separate magnetic potential of two-way is flow through in iron core, wherein sensing will necessarily be produced through vice-side winding all the way disturbing
Disturb voltage.
To sum up, in iron core, magnetic potential has：Magnetic field F is harassed in space0, the magnetic field F that primary coil is produced1, the magnetic that secondary coil is produced
Field F2。F0+F1+F2=F∑For the total harassing and wrecking magnetic field summation of iron core.Cause F if as certain reason∑≠ 0, and the magnetic which produces
Logical just linkage Secondary Winding again, then transformer will export disturbance voltage, cause the malfunction of protective relaying device, harm electricity
The safe operation of net.
The content of the invention
The purpose of the present invention is the defect for overcoming prior art to exist, and proposes a kind of electricity for resisting power frequency magnetic field harassing and wrecking
The manufacture method of pressure transformer, solves voltage transformer and produces power frequency magnetic field harassing and wrecking.
The present invention is adopted the following technical scheme that：A kind of manufacturer for resisting the voltage transformer of power frequency magnetic field harassing and wrecking
Method, it is characterised in that comprise the steps：
The primary side winding being looped around on annular core is evenly arranged by step SS1；
The vice-side winding being looped around on annular core is divided into two pieces by step SS2, and each piece of vice-side winding is reduced to 1
Individual arrowband；Two pieces of vice-side windings are arranged symmetrically in the both sides of annular core, after the line bag series connection of two pieces of vice-side windings
Output；
During step SS3 envelope shell, the centrage of the vice-side winding is directed at into the diagonal of the shell, and along 45 degree
Angle is packaged.
Preferably, the harassing and wrecking magnetic field from positive X, positive Y-direction is divided into two-way into after annular core, can distinguish linkage former limit
Winding, symmetrical vice-side winding, the in opposite direction, amplitude of sensing is equal, phase place identical electromotive force, after cancelling out each other externally
Output electromotive force is zero.
Preferably, harass magnetic field to enter along the center of annular core, the in opposite direction, amplitude of sensing is equal, the identical electricity of phase place
Kinetic potential, after cancelling out each other, externally output electromotive force is zero.
Preferably, the magnetic field to space any direction, is decomposed into XYZ directions by carrying out space vector, senses direction phase
Instead, amplitude is equal, phase place identical electromotive force, and after cancelling out each other, externally output electromotive force is zero.
The beneficial effect reached by the present invention：Symmetrical using vice-side winding, the manufacturing process of 45 degree of angle encapsulation can make
Voltage transformer must successfully resist power frequency magnetic field harassing and wrecking, by power frequency magnetic field EMC certifications.
Description of the drawings
Fig. 1 is the sketch of two kinds of processing technology of existing voltage transformer.
Fig. 2 is a kind of technique letter for resisting the manufacture method of the voltage transformer of power frequency magnetic field harassing and wrecking of the present invention
Figure.
Fig. 3 be the present invention the positive X in edge, positive Y-direction harassing and wrecking magnetic field enter annular core a kind of embodiment.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
Fig. 2 is a kind of technique letter for resisting the manufacture method of the voltage transformer of power frequency magnetic field harassing and wrecking of the present invention
Figure, the present invention are adopted the following technical scheme that：A kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking, which is special
Levy and be, comprise the steps：
The primary side winding being looped around on annular core is evenly arranged by step SS1；Because the primary side winding number of turn is more, can
Uniform, the former limit of uniform coiling to be easily done, under external magnetic field harassing and wrecking, will not occur armature-reaction；
The vice-side winding being looped around on annular core is divided into two pieces by step SS2, and each piece of vice-side winding is reduced to 1
Individual arrowband；Two pieces of vice-side windings are arranged symmetrically in the both sides of annular core, after the line bag series connection of two pieces of vice-side windings
Output；Because the vice-side winding number of turn is within 200, therefore is reduced into two arrowbands, it is feasible；Be evenly arranged phase
Need not more wire winding than, this method, it is not required that increase the secondary number of turn, therefore operability is higher.
During step SS3 envelope shell, the centrage of the vice-side winding is directed at into the diagonal of the shell, and along 45 degree
Angle is packaged.
Fig. 3 be the present invention the positive X in edge, positive Y-direction harassing and wrecking magnetic field enter annular core a kind of embodiment, from positive X,
The harassing and wrecking magnetic field of positive Y-direction is divided into two-way into after annular core, can distinguish linkage primary side winding, symmetrical secondary around
Group, the in opposite direction, amplitude of sensing is equal, phase place identical electromotive force, and after cancelling out each other, externally output electromotive force is zero.
Preferably, harass magnetic field to enter along the center of annular core, the in opposite direction, amplitude of sensing is equal, the identical electricity of phase place
Kinetic potential, after cancelling out each other, externally output electromotive force is zero.
Preferably, the magnetic field to space any direction, is decomposed into XYZ directions by carrying out space vector, senses direction phase
Instead, amplitude is equal, phase place identical electromotive force, and after cancelling out each other, externally output electromotive force is zero.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of without departing from the technology of the present invention principle, some improvement and deformation can also be made, these improve and deform
Also should be regarded as protection scope of the present invention.
Claims (4)
1. it is a kind of for resist power frequency magnetic field harassing and wrecking voltage transformer manufacture method, it is characterised in that comprise the steps：
The primary side winding being looped around on annular core is evenly arranged by step SS1；
The vice-side winding being looped around on annular core is divided into two pieces by step SS2, each piece of vice-side winding be reduced to 1 it is narrow
Band；Two pieces of vice-side windings are arranged symmetrically in the both sides of annular core, export after the line bag series connection of two pieces of vice-side windings；
During step SS3 envelope shell, the centrage of the vice-side winding is directed at into the diagonal of the shell, and is entered along 45 degree of angles
Row encapsulation.
2. a kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking according to claim 1, which is special
Levy and be, the harassing and wrecking magnetic field from positive X, positive Y-direction is divided into two-way into after annular core, linkage primary side winding, right can be distinguished
Claim the vice-side winding of distribution, the in opposite direction, amplitude of sensing is equal, phase place identical electromotive force, after cancelling out each other, externally export electricity
Kinetic potential is zero.
3. a kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking according to claim 2, which is special
Levy and be, harass magnetic field and enter along the center of annular core, the in opposite direction, amplitude of sensing is equal, the identical electromotive force of phase place, mutually
After counteracting, externally output electromotive force is zero.
4. a kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking according to claim 3, which is special
Levy and be, the magnetic field to space any direction is decomposed into XYZ directions by carrying out space vector, senses in opposite direction, amplitude phase
Deng, phase place identical electromotive force, after cancelling out each other, externally output electromotive force is zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649180.0A CN105206408B (en) | 2015-10-09 | 2015-10-09 | A kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649180.0A CN105206408B (en) | 2015-10-09 | 2015-10-09 | A kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105206408A CN105206408A (en) | 2015-12-30 |
| CN105206408B true CN105206408B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510649180.0A Active CN105206408B (en) | 2015-10-09 | 2015-10-09 | A kind of manufacture method for resisting the voltage transformer of power frequency magnetic field harassing and wrecking |
Country Status (1)
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2124345C3 (en) * | 1971-05-17 | 1978-10-19 | Friedrich Dr.-Ing.E.H. 8600 Bamberg Raupach | Transformer for generating or measuring high and extremely high voltages or for measuring currents at high voltage potential in cascade connection |
| CN1025767C (en) * | 1992-09-08 | 1994-08-24 | 魏有辑 | AC current-voltage mutual inductor |
| US8072308B2 (en) * | 2007-02-26 | 2011-12-06 | General Electric Company | High voltage transformer and a novel arrangement/method for hid automotive headlamps |
| PL2565884T3 (en) * | 2011-08-31 | 2014-08-29 | Abb Technology Ag | High voltage coil |
| CN103545100B (en) * | 2013-10-22 | 2017-01-04 | 江苏靖江互感器厂有限公司 | A kind of voltage transformer |
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2015
- 2015-10-09 CN CN201510649180.0A patent/CN105206408B/en active Active
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| CN105206408A (en) | 2015-12-30 |
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