KR101764505B1 - Power transformer - Google Patents
Power transformer Download PDFInfo
- Publication number
- KR101764505B1 KR101764505B1 KR1020150180471A KR20150180471A KR101764505B1 KR 101764505 B1 KR101764505 B1 KR 101764505B1 KR 1020150180471 A KR1020150180471 A KR 1020150180471A KR 20150180471 A KR20150180471 A KR 20150180471A KR 101764505 B1 KR101764505 B1 KR 101764505B1
- Authority
- KR
- South Korea
- Prior art keywords
- winding
- wrought iron
- guide
- iron core
- magnetic flux
- Prior art date
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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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
-
- 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
- H01F27/24—Magnetic cores
-
- 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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention provides a power transformer. The power transformer includes an iron core portion having a winding support portion formed at a center thereof; A winding portion provided on the winding supporting portion; A support portion disposed along the rim of the iron core portion and supporting the iron core portion; And a flux path guide portion installed in the support portion and guiding a leakage magnetic flux path generated from the winding portion toward the iron core portion.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transformer, and more particularly, to a power transformer capable of preventing local overheating by reducing magnetic flux leaking inside a transformer.
Generally, a power transformer is a device that converts power supplied to a necessary power source and supplies the same.
During the operation of the transformer, a leakage magnetic flux is generated between the windings installed in the center of the transformer.
When the conventional power transformer is operated, a leakage magnetic flux is generated in the winding, and the leakage magnetic flux flows from the end portion of the winding to the iron core, clamp or wrought iron, tank wall, lead wire and the like.
However, there is a problem that the leakage magnetic flux generated in the above-described winding causes heat and loss while directly connecting or passing through the winding, and deteriorates the insulating oil and the insulating material.
Therefore, in order to control the leakage magnetic flux, shielding plates are conventionally provided on the tank wall of the power transformer, but a large effect can not be obtained.
FIG. 1 is a perspective view showing a structure of a conventional power transformer, and FIG. 2 is a front view showing a structure of a conventional power transformer.
1 and 2, a conventional power transformer includes an
The
The plate (30) connects both ends of the upper wrought iron (10) and the lower wrought iron (20).
The
The winding (50) is formed by being wound by a winding wire set in the winding guide (42).
Here, the upper wrought iron (10) and the lower wrought iron (20) serve to warn the iron core and the winding (50).
The plate (30) serves to support the iron core (40).
The
3 is a view showing a path of a leakage magnetic flux in a conventional transformer.
Referring to FIG. 3, it can be seen that in the conventional transformer, leakage flux is generated in the winding, and the path of the leakage magnetic flux extends to the upper and lower
In addition, the path of the leakage magnetic flux forms a path extending toward the tank wall side.
Accordingly, there is a problem in that a loss is generated in the structures of the upper and lower wrought iron (10, 20) and the plate (30) due to the leaked magnetic flux generated as described above, and local temperature rise occurs.
In addition, the temperature rise of the transformer due to the above structure causes a rise in the temperature of the insulating oil, and also has a problem of reducing the life of the transformer.
In addition, there is also a problem that the generation of deterioration of the insulator is increased to cause an electrical failure due to a decrease in the characteristics of the insulator.
A prior art related to the present invention is Korean Patent Laid-Open Publication No. 10-2004-0016555.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a transformer for electric power which can induce a path of a leakage magnetic flux generated in a winding of a transformer so as to flow through an iron core and prevent loss and local deterioration of a structure along the flow to the wrought iron and the tank .
In a preferred aspect, the present invention provides a power transformer.
The power transformer includes an iron core portion having a winding support portion formed at a center thereof; A winding portion provided on the winding supporting portion; A support portion disposed along the rim of the iron core portion and supporting the iron core portion; And a flux path guide portion installed in the support portion and guiding a leakage magnetic flux path generated from the winding portion toward the iron core portion.
It is preferable that the support portion includes a wrought iron member for supporting the upper and lower ends of the iron core portion and a plate for connecting both ends of the wrought iron member and supporting both ends of the iron core portion.
The flux path guide portion is preferably provided on the wrought iron member.
It is preferable that the wrought iron member is provided with an installation groove along the longitudinal direction of the wrought iron member.
Preferably, the magnetic flux path guide portion is fitted in the installation groove.
Preferably, the magnetic flux path guide portion includes an induction member that is installed in the installation groove and is bent so that the installation groove is covered from the winding portion.
It is preferable that the installation grooves are formed in a plurality of intervals along the longitudinal direction of the wrought iron member, and the guide member is installed in a plurality of the installation grooves formed in a plurality of the installation grooves.
It is preferable that the guide member includes the first guide member and a second guide member bent from the first guide member.
Wherein the first induction member is disposed on an outer surface of the wrought iron member so as to follow the same direction as the winding portion and the second induction member is disposed on an inner surface of the wrought iron member so as to face both end faces of the winding portion .
It is preferable that a curved portion is formed between the first guide member and the second guide member.
The upper end of the second guide member may be formed with an inclined surface that is inclined gradually toward the winding portion.
INDUSTRIAL APPLICABILITY The present invention has an effect of inducing a path of a leakage magnetic flux generated in a winding of a transformer to flow through an iron core, thereby preventing loss and local deterioration of the structure along the flow to the wrought iron and the tank.
Further, the present invention has the effect of maintaining the insulation distance between the pair of disconnecting members for supporting the upper and lower ends of the winding section and the winding section.
In addition, the present invention has an effect of facilitating the path of the leakage magnetic flux to the winding section more easily by forming an inclined surface that is gradually inclined toward the winding section at the upper end of the second induction member formed in each of the washer members .
Further, according to the present invention, a plurality of guide members are formed, installation grooves are formed in the respective wrought iron members, and the guide member is inserted into each of the installation grooves to improve the stiffness in supporting the winding portion And also has an effect of distributing the supporting force evenly and stably supporting the winding portion.
Further, by providing a plurality of guide members of the present invention in a plurality of installation grooves formed in the wrought iron member, it is possible to secure an insulation distance.
1 is a perspective view showing a structure of a conventional power transformer.
2 is a front view showing a structure of a conventional power transformer.
3 is a view showing a path of a leakage magnetic flux in a conventional transformer.
4 is a perspective view showing a state where the power transformer of the present invention is mounted on a tank portion.
5 is a front view showing the power transformer of the present invention.
6 is a perspective view showing the power transformer of the present invention.
FIG. 7 is a perspective view showing a coupling state of a magnetic path guide portion and a wrought iron member according to the present invention. FIG.
8A and 8B are views showing a leakage magnetic flux path according to the present invention.
FIG. 9 is a perspective view showing another example of the magnetic flux path guide portion according to the present invention. FIG.
10 is a perspective view showing still another example of the magnetic flux path guide portion according to the present invention.
11 is a cross-sectional view showing another example of the magnetic flux pathway induction portion according to the present invention.
Hereinafter, a power transformer of the present invention will be described with reference to the accompanying drawings.
FIG. 4 is a perspective view showing a state where the power transformer of the present invention is mounted on a tank portion, FIG. 5 is a front view showing the power transformer of the present invention, and FIG. 6 is a perspective view showing the power transformer of the present invention.
4 to 6, the power transformer of the present invention mainly includes a
The
The
The
The
Further, the supporting
The supporting
The
The upper
The
Each of the pair of
The pair of
Here, the upper and lower
Therefore, in the following description, the lower
The magnetic flux path guide
The
The
FIG. 7 is a perspective view showing a coupling state of a magnetic path guide portion and a wrought iron member according to the present invention. FIG.
Referring to FIG. 7, the magnetic flux path guide
The plurality of
The plurality of
Preferably, the plurality of guide members 510 '
'Shape.That is, each of the plurality of
As described above, the
Each of the
Each of the installation recesses 430 may be formed in the same shape as that of the
The mounting
The first installation groove 431 is formed on the outer surface of the
The second installation groove 432 is formed on the upper surface of the
Here, in the case of the upper
Accordingly, the first and second mounting grooves 431 and 432 are also formed in a shape corresponding to the shape of the
In particular, in the
In addition, reinforcing
The reinforcing
The
In addition, the
The
With reference to the above configuration, in the present invention, by inserting the shunt induction members between the reinforcing members, the induction members can be inserted while maintaining the insulation distance between the winding unit and the wrought iron members.
Therefore, the induction members can be inserted and inserted without increasing the height of the transformer.
Further, in the present invention, the upper surface of the second induction member in each of the induction members is cut so as to have the same height as the upper surface of the wrought iron member to form the installation groove, It is possible to disperse the force generated in the case of supporting.
Further, in the present invention,
'To form a large number of them, and they can be installed in close proximity to the respective installation grooves, thereby preventing deviation to the outside.The following describes the magnetic flux path derivation in the transformer having the above configuration.
8A and 8B are views showing a leakage magnetic flux path according to the present invention.
Referring to FIGS. 8A and 8B, a leakage magnetic flux is generated in the winding
The leakage magnetic flux generated as described above is guided to the upper end side of the
At the same time, the leakage flux path (a) incident on the second
The leakage magnetic flux path a in which the magnetic flux path is guided toward the
Therefore, in the present invention, a path is formed so that the leakage magnetic flux can be guided to the iron core portion, so that the leakage magnetic flux enters into the iron core portion having a relatively low loss so that the leaked magnetic flux generated in the winding portion is absorbed by the tank and the wrought iron member It is possible to effectively prevent the loss and the occurrence of local deterioration due to incidence.
FIG. 9 is a perspective view showing another example of the magnetic flux path guide portion according to the present invention. FIG.
Referring to FIG. 9, the guide members according to the present invention may be installed at intervals in the respective installation grooves with a predetermined number.
That is, in comparison with the above-described example, the present embodiment is characterized in that a plurality of
Therefore, the width of each of the shunt-type induction members 510 'is reduced to one or less, thereby preventing the formation of eddy currents, thereby reducing the temperature.
10 is a perspective view showing still another example of the magnetic flux path induction unit according to the present invention.
Referring to FIG. 10, the
The
The
In addition, although not shown in the drawing, the thickness of the first inducing member in each of the guide members may be formed so as to gradually become thicker along the lower end from the upper end.
That is, depending on the shape of the thickness, an upward inclined guide surface may be formed on the first guide member.
Therefore, when the magnetic flux path is formed along the first induction member, it can be prevented that the magnetic flux is guided upward along the induction slope and flows into the bottom surface of the structure such as a tank.
11 is a cross-sectional view showing another example of the magnetic flux pathway induction portion according to the present invention.
Referring to FIG. 11, an
Preferably, the
It is preferable that an inclined surface is formed so that the thickness of the
The
Is guided to the upper end side of the
At the same time, the leakage flux incident on the second guiding
That is, the leakage magnetic flux may be guided to the
Although not shown in the drawing, the overall inclined surface formed on the guide members may be formed to have a concave slope along the center from the outside of both ends, with the center of the wrought iron member as the center.
According to the structure and operation as described above, the embodiment of the present invention induces the path of the leakage magnetic flux generated in the winding of the transformer to flow through the iron core, thereby preventing loss and local deterioration of the structure along the flow to the wrought iron and the tank side can do.
As described above, the power transformer according to the present invention has been described in detail. However, it is apparent that various modifications are possible within the scope of the present invention.
Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.
It is to be understood that the foregoing embodiments are illustrative and not restrictive in all respects and that the scope of the present invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.
100: tank portion
200: iron core part
300:
400: Support
410:
420: plate
430: Installation home
431: First installation home
432: Second installation home
500: flux path guide section
510: guide member
Claims (9)
A winding part installed in the winding supporting part;
A support portion disposed along the rim of the iron core portion and supporting the iron core portion; And
And a magnetic flux path guide portion provided on the support portion and guiding a leakage magnetic flux path generated from the winding portion to the iron core portion side,
The support portion
An upper wrought iron member for supporting an upper end portion of the iron core portion, a lower wrought iron member for supporting a lower end portion of the iron core portion,
And a plate for supporting both ends of the upper wrought iron member and the lower wrought iron member,
Wherein the magnetic flux path guide portion includes guide members formed on the lower wrought iron member and bent,
The lower wrought iron member is provided with installation grooves,
Wherein each of the guide members is installed in each of the installation recesses,
The lower wrought iron member is provided with reinforcing members protruding forward from the mounting recesses,
Wherein a width of the induction members is formed to be narrower along both side portions at a central portion of the lower wrought iron member.
Wherein the guide member comprises:
A first guide member, and a second guide member,
The first induction member is disposed on an outer surface of the lower wrought iron member so as to follow the same direction as the winding portion,
The second induction member is disposed on an inner surface of the lower wrought iron member so as to face both end faces of the winding portion,
And the upper surface of the second induction member is formed to have the same height as the upper surface of the lower wrought iron member.
And a curved portion is formed between the first guide member and the second guide member.
And an upper end of the second guide member,
Wherein a slope is formed in which the thickness of the second induction member gradually decreases toward the winding portion.
Priority Applications (1)
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KR1020150180471A KR101764505B1 (en) | 2015-12-16 | 2015-12-16 | Power transformer |
Applications Claiming Priority (1)
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KR1020150180471A KR101764505B1 (en) | 2015-12-16 | 2015-12-16 | Power transformer |
Publications (2)
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KR20170072073A KR20170072073A (en) | 2017-06-26 |
KR101764505B1 true KR101764505B1 (en) | 2017-08-14 |
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KR1020150180471A KR101764505B1 (en) | 2015-12-16 | 2015-12-16 | Power transformer |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102015466B1 (en) | 2019-07-22 | 2019-08-28 | (주)알파앤오메가 | Transformer for electric power that prevents deterioration of insulation oil performance by improving heat dissipation performance |
KR102030336B1 (en) | 2019-08-19 | 2019-10-10 | (주)태화기전 | Improved safety power transformer with insulating oil checking and replacement |
KR102030334B1 (en) | 2019-07-22 | 2019-10-10 | (주)두산전력 | Power transformer with enhanced oil filtering function |
KR102015453B1 (en) | 2019-07-22 | 2019-10-23 | (주)동조전력 | Power transformer with enhanced conservator function |
KR102015457B1 (en) | 2019-07-22 | 2019-10-23 | 한국초고압 주식회사 | Power transformer simplifies respiratory structure |
KR102185288B1 (en) | 2020-10-14 | 2020-12-02 | 주식회사 천우 | Energy storage device using kinetic energy of cooler for power transformer |
KR102185310B1 (en) | 2020-10-14 | 2020-12-03 | 주식회사 천우 | Power transformer system that includes a complex neutral ground transformer reactor and has a protective function |
KR102185299B1 (en) | 2020-10-14 | 2020-12-03 | 주식회사 천우 | Multifunctional protection device for power transformer |
Families Citing this family (2)
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KR102677673B1 (en) * | 2024-02-01 | 2024-06-25 | 상기이엔지 주식회사 | Transformer impedance variable control device |
KR102677676B1 (en) * | 2024-02-01 | 2024-06-25 | 상기이엔지 주식회사 | Improved transformer impedance variable control device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003524894A (en) * | 2000-02-23 | 2003-08-19 | エービービー テクノロジィ アクチエンゲゼルシャフト | Magnetic flux leakage protection device for transformer clamp bar |
JP2006147716A (en) | 2004-11-17 | 2006-06-08 | Risho Kogyo Co Ltd | Three-winding mold transformer |
-
2015
- 2015-12-16 KR KR1020150180471A patent/KR101764505B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003524894A (en) * | 2000-02-23 | 2003-08-19 | エービービー テクノロジィ アクチエンゲゼルシャフト | Magnetic flux leakage protection device for transformer clamp bar |
JP2006147716A (en) | 2004-11-17 | 2006-06-08 | Risho Kogyo Co Ltd | Three-winding mold transformer |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102015466B1 (en) | 2019-07-22 | 2019-08-28 | (주)알파앤오메가 | Transformer for electric power that prevents deterioration of insulation oil performance by improving heat dissipation performance |
KR102030334B1 (en) | 2019-07-22 | 2019-10-10 | (주)두산전력 | Power transformer with enhanced oil filtering function |
KR102015453B1 (en) | 2019-07-22 | 2019-10-23 | (주)동조전력 | Power transformer with enhanced conservator function |
KR102015457B1 (en) | 2019-07-22 | 2019-10-23 | 한국초고압 주식회사 | Power transformer simplifies respiratory structure |
KR102030336B1 (en) | 2019-08-19 | 2019-10-10 | (주)태화기전 | Improved safety power transformer with insulating oil checking and replacement |
KR102185288B1 (en) | 2020-10-14 | 2020-12-02 | 주식회사 천우 | Energy storage device using kinetic energy of cooler for power transformer |
KR102185310B1 (en) | 2020-10-14 | 2020-12-03 | 주식회사 천우 | Power transformer system that includes a complex neutral ground transformer reactor and has a protective function |
KR102185299B1 (en) | 2020-10-14 | 2020-12-03 | 주식회사 천우 | Multifunctional protection device for power transformer |
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KR20170072073A (en) | 2017-06-26 |
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