KR20110126477A - Winding coil for oil insulated transformer - Google Patents

Winding coil for oil insulated transformer Download PDF

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Publication number
KR20110126477A
KR20110126477A KR1020100046168A KR20100046168A KR20110126477A KR 20110126477 A KR20110126477 A KR 20110126477A KR 1020100046168 A KR1020100046168 A KR 1020100046168A KR 20100046168 A KR20100046168 A KR 20100046168A KR 20110126477 A KR20110126477 A KR 20110126477A
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South Korea
Prior art keywords
winding
voltage winding
high voltage
transformer
winding coil
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KR1020100046168A
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Korean (ko)
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KR101453124B1 (en
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배병현
이종호
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엘에스산전 주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • 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
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F2027/329—Insulation with semiconducting layer, e.g. to reduce corona effect

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

PURPOSE: A winding coil for an oil insulated transformer is provided to evenly spread concentrated electric fields, thereby reducing concentration of electric fields. CONSTITUTION: A semi conductive material(500) spreads concentrated electric fields to weaken the electric fields. The semi conductive material is installed in a high voltage winding coil insertion end. The semi conductive material is installed by bonding or binding methods. The semi conductive material is bonded with the high voltage winding coil insertion end using an adhesive. An insulator(400) is arranged in the upper end of the high voltage winding coil insertion end. The insulator insulates the upper end of a high voltage winding coil insertion end from the semi conductive material.

Description

유입식 변압기의 권선{WINDING COIL FOR OIL INSULATED TRANSFORMER}Winding of an inrush transformer {WINDING COIL FOR OIL INSULATED TRANSFORMER}

본 발명은 절연 내력을 향상시킬 수 있고 작업공정을 단순화하여 생산성을 향상시킬 수 있는 유입식 변압기의 권선에 관한 것이다.
The present invention relates to a winding of an inrush transformer which can improve the dielectric strength and can improve the productivity by simplifying the work process.

유입식 변압기는 운전시 권선이 발열하게 되고, 발생된 열은 변압기 내부에 충진된 절연유를 매개체로 하여 방사, 대류 등에 의해서 외기 중에 방열되며, 발열량이 방열량보다도 큰 동안은 온도가 상승하지만 발열량이 방열량과 평형을 유지하게 되면 온도는 일정하게 유지된다.Inflow transformer generates heat during operation, and the generated heat is dissipated in the outside air by radiation, convection, etc., through the insulating oil filled in the transformer. In equilibrium, the temperature remains constant.

현재 초고압 변압기의 수요가 증가함에 변압기의 절연 성능을 향상시킬 수 있는 방향으로 변압기가 발전하고 있다.As the demand for ultra high voltage transformers increases, transformers are being developed in a way to improve the insulation performance of transformers.

도 1은 종래 기술에 따른 초고압 변압기의 권선 구조를 나타낸 사시도이고, 도 2는 종래 기술에 따른 초고압 변압기의 권선 구조를 나타낸의 일부 확대도이다.1 is a perspective view showing a winding structure of a high voltage transformer according to the prior art, and FIG. 2 is a partially enlarged view of the winding structure of a high voltage transformer according to the prior art.

종래 기술에 따른 변압기의 권선은 최외곽에 고압권선(10)이 배치되고, 고압 권선(20)의 내면에 고압권선(10)과 절연 가능하게 중압권선(20)이 배치되고, 중압권선(20)의 내측에 중압권선(20)과 절연 가능하게 저압권선(30)이 배치된다. In the winding of the transformer according to the prior art, the high voltage winding 10 is disposed at the outermost side, and the medium voltage winding 20 is disposed on the inner surface of the high voltage winding 20 so as to be insulated from the high voltage winding 10, and the medium voltage winding 20 The low pressure winding 30 is disposed inside the) so as to be insulated from the medium pressure winding 20.

그리고, 고압권선 단자의 인입부(12) 상단에는 고압권선(10)의 첫 턴과 동위상의 정전판(40)이 삽입된다. 이 정전판(40)은 뇌충격 전압인가에 따른 전계의 집중을 고르게 펴지게 함으로써, 고압권선(10)에서 인접하여 배치되는 권선인 중압권선 (20)및 저압권선(30)으로 향하는 좁은 전계 집중을 고르게 퍼지게 함으로써, 전계완화 효과를 가져오고 절연내력을 향상시킨다. Then, the electrostatic plate 40 in phase with the first turn of the high-voltage winding 10 is inserted into the lead 12 of the high-voltage winding terminal. The electrostatic plate 40 spreads the electric field evenly according to the application of the lightning shock voltage, thereby narrowing the electric field toward the medium voltage winding 20 and the low voltage winding 30 which are windings disposed adjacent to the high voltage winding 10. By spreading it evenly, it has a field relaxation effect and improves dielectric strength.

정전판(40)은 프레스 우드(Press Wood) 또는 프레스 보드(Press board)를 링 형태로 가공하고 그 외면에 동박(Copper sheet)으로 감고 그 동박에 리드선(Lead wire)을 용접하여 고압권선(10)의 첫 턴과 연결하고, 노출된 동박은 다시 절연지로 빈틈없이 감아서 제조된다.The electrostatic plate 40 processes a press wood or a press board into a ring shape, winds it with a copper sheet on its outer surface, and welds a lead wire to the copper foil to form a high-voltage winding 10 Connected to the first turn of), the exposed copper foil is again manufactured by winding tightly with insulating paper.

하지만, 종래의 정전판(40)은 그 구조가 복잡하여 제조가 어렵고 작업 시간이 길어지는 문제점이 있다. However, the conventional electrostatic plate 40 has a problem in that its structure is complicated and difficult to manufacture and the working time is long.

또한, 정전판(40) 및 정전판(40)을 고압권선(10)에 장착하는 구조물의 무게로 인하여 변압기 전체의 무게를 증가시키게 되고, 이에 따라 중량이 중요한 설계인가가 되는 설계 단계에 악영향을 미치게 되는 문제점이 있다.
In addition, due to the weight of the structure for mounting the electrostatic plate 40 and the electrostatic plate 40 to the high-voltage winding 10, the weight of the entire transformer is increased, thereby adversely affecting the design stage that the weight is important design approval There is a problem going crazy.

본 발명은 권선의 절연구조를 개선하여 전계 완화효과를 향상시키면서 작업 공정을 단순화하여 생산성을 향상시킬 수 있고 변압기의 중량 증가를 최소화할 수 있는 유입식 변압기의 권선을 제공하는 것이다. The present invention is to provide a winding of the inlet transformer to improve the insulation structure of the winding to improve the electric field relaxation effect while simplifying the work process to improve productivity and minimize the weight increase of the transformer.

본 발명이 이루고자 하는 기술적 과제는 이상에서 언급한 기술적 과제로 제한되지 않으며 언급되지 않은 또 다른 기술적 과제들은 아래의 기재로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명확하게 이해될 수 있을 것이다.The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

일실시예로서, 유입식 변압기의 권선은 최외측에 배치되는 고압권선과, 상기 고압권선의 내측에 절연 가능하게 배치되는 중압권선과, 상기 중압권선의 내측에 절연 가능하게 배치되는 저압권선과, 상기 고압권선 중 최대 전계가 집중되는 부분을 감싸도록 배치되어 집중된 전계를 완화시키는 반도전체를 포함한다.In one embodiment, the winding of the inflow transformer is a high voltage winding disposed on the outermost side, a medium voltage winding disposed to be insulated inside the high voltage winding, a low pressure winding disposed to be insulated inside the medium voltage winding, The semiconductor device includes a semiconductor conductor disposed to surround a portion of the high voltage winding in which the maximum electric field is concentrated, and to mitigate the concentrated electric field.

본 발명의 유입식 변압기의 권선은 최대 전계가 집중되는 고압권선 인입단에 반도전체를 감싸도록 구비하여 집중된 전계를 고르게 확산시켜 전계 집중을 완화시킬 수 있고, 반도전체를 고압권선 인입단에 부착하면 제조가 완료되므로 작업공정을 단순화할 수 있고, 변압기의 무게를 최소화할 수 있게 된다.
The winding of the inflow transformer of the present invention is provided to surround the semiconducting conductor in the high voltage winding inlet end where the maximum electric field is concentrated, thereby evenly spreading the concentrated electric field, and alleviating the electric field concentration. Since the manufacturing is completed, the work process can be simplified and the weight of the transformer can be minimized.

도 1은 종래 기술에 따른 유입식 변압기의 권선을 절개한 사시도이다.
도 2는 종래 기술에 따른 유입식 변압기의 권선 구조를 나타낸 일부 확대도이다.
도 3은 본 발명의 일 실시예에 따른 유입식 변압기의 권선을 절개한 사시도이다.
도 4는 본 발명의 일 실시예에 따른 유입식 변압기의 권선의 일부 확대도이다.Figure 1 is a perspective view of the winding of the inrush transformer according to the prior art.
Figure 2 is a partially enlarged view showing the winding structure of the inrush transformer according to the prior art.
Figure 3 is a perspective view of the winding of the inrush transformer according to an embodiment of the present invention.
4 is an enlarged view of a portion of a winding of an inrush transformer according to an embodiment of the present invention.

이하, 첨부된 도면들을 참조하여 본 발명에 따른 실시예를 상세히 설명한다. 이 과정에서 도면에 도시된 구성요소의 크기나 형상 등은 설명의 명료성과 편의상 과장되게 도시될 수 있다. 또한, 본 발명의 구성 및 작용을 고려하여 특별히 정의된 용어들은 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. Definitions of these terms should be made based on the contents throughout the specification.

도 3은 본 발명의 일 실시예에 따른 유입식 변압기의 권선을 나타낸 일부 절개 사시도이고, 도 4는 본 발명의 일 실시예에 따른 유입식 변압기의 권선을 나타낸 일부 확대도이다. 3 is a partially cutaway perspective view illustrating a winding of an inflow transformer according to an embodiment of the present invention, and FIG. 4 is an enlarged view of a portion of the winding of the inflow transformer according to an embodiment of the present invention.

도 3 및 도 4에 도시된 바와 같이, 본 발명의 일 실시예에 따른 유입식 변압기의 권선은 최외측에 감겨지는 고압권선(100)과, 고압권선(100)의 내측에 고압권선(100)과 절연 가능하게 감겨지는 중압권선(200)과, 중압권선(200)의 내측에 중압권선(200)과 절연 가능하게 감겨지는 저압권선(300)을 포함한다.As shown in Figure 3 and 4, the winding of the inlet transformer according to an embodiment of the present invention is the high-voltage winding (100) wound on the outermost side, and the high-voltage winding (100) inside the high-voltage winding (100) And a medium pressure winding 200 wound around the insulation medium and a low pressure winding 300 wound around the middle pressure winding 200 so as to be insulated from the inside of the middle pressure winding 200.

이러한 변압기에서 뇌충격 절연시험시 최대 전계가 인가되면, 절연 불량시 파괴되는 부분은 거의 일정한 패턴을 보인다. 즉, 뇌충격 전압이 인가되면 권선 도체 영역 중 일정 부위에 최대 전계가 집중되고, 이에 따라 주위 전계에 비해 높은 전계는 절연파괴 영역으로 들어가게 된다. If a maximum electric field is applied during the lightning shock insulation test in such a transformer, the part that is destroyed in case of poor insulation shows a substantially constant pattern. That is, when the lightning shock voltage is applied, the maximum electric field is concentrated in a certain portion of the winding conductor region, so that the electric field higher than the surrounding electric field enters the dielectric breakdown region.

따라서, 고압권선(100)의 최대 전계가 집중되는 부위에 집중된 전계를 넓게 확산시켜 전계를 완화시키기 위한 반도전체(500)가 설치된다.Therefore, a semiconductor 500 is provided to widen the electric field concentrated in the portion where the maximum electric field of the high voltage winding 100 is concentrated to alleviate the electric field.

고압권선(100) 중 최대전계가 집중되는 부위는 고압권선 인입단(120)이 거의 대부분이므로, 이 고압권선 인입단(120)에 반도전체(500)가 설치된다.Since the portion of the high voltage winding 100 where the maximum electric field is concentrated is almost the high voltage winding inlet end 120, the semiconductor conductor 500 is installed in the high voltage winding inlet end 120.

반도전체(500)는 고압권선 인입단(120)에 감싸지게 배치되며, 본딩 또는 묶는 방식으로 설치된다. 즉, 반도전체(500)의 한쪽 부분은 고압권선 인입단(120) 내면에 감싸지고, 그 다른쪽 부분은 고압권선 인입단(120)의 외면에 감싸지고 그 중앙측이 고압권선 인입단(120)의 상단에 감싸진다. Semi-conductor 500 is disposed to be wrapped in the high-voltage winding inlet 120, it is installed by bonding or tying. That is, one portion of the semiconducting material 500 is wrapped on the inner surface of the high-voltage winding lead-in end 120, the other part is wrapped on the outer surface of the high-voltage winding lead-in end 120, and the center side thereof is the high-voltage winding lead-in end 120. Wrapped on top of the).

그리고, 반도전체(500)는 접착제를 이용하여 고압권선 인입단(120)에 본딩될 수 있고, 본딩 이외에 묶는 방식 등 다른 어떤 고정방식도 적용이 가능하다.In addition, the semiconductor 500 may be bonded to the high-voltage winding lead end 120 using an adhesive, and any other fixing method may be applied, such as a method of binding other than the bonding.

그리고, 고압권선 인입단(120) 상단에는 고압권선(100)의 상단과 반도전체(500) 사이를 절연시키기 위한 절연체(400)가 배치된다.In addition, an insulator 400 is disposed at an upper end of the high voltage winding lead end 120 to insulate the upper end of the high voltage winding 100 from the semiconductor conductor 500.

이 절연체(400)는 고압권선(100)의 상단이 본딩에 의해 고정될 수 있고, 프레스 보드 또는 프레스 우드가 사용될 수 있다. 이외에 절연성능을 갖는 어떠한 재질도 적용이 가능하다. The insulator 400 may be fixed by bonding the upper end of the high-voltage winding 100, a press board or a press wood may be used. In addition, any material having insulation performance may be applied.

이와 같이, 구성되는 본 발명의 일 실시예에 따른 변압기 권선의 작용을 살펴보면, 고압권선 인입단(120)에 집중된 최대 전계는 고압권선 인입단(120)에 감싸지게 배치된 반도전체(500)를 통과한다. 이 반도전체(500)를 통과하는 전계는 반도전체(500)의 외측 표면을 따라 균일하게 분포하려는 성질을 가지게 된다. 따라서, 집중된 전계는 넓게 펴지면서 단위 길이당 전계의 크기가 저감되어 절연 내력을 향상시킬 수 있게 된다.Thus, looking at the action of the transformer winding according to an embodiment of the present invention, the maximum electric field concentrated in the high-voltage winding inlet 120 is a semiconductor 500 is wrapped around the high-voltage winding inlet 120 To pass. The electric field passing through the semiconductor 500 has a property of being uniformly distributed along the outer surface of the semiconductor 500. Therefore, the concentrated electric field is widened and the size of the electric field per unit length is reduced to improve the dielectric strength.

이러한 반도전체(500)는 무게가 가볍기 때문에 변압기의 중량 부담을 줄일 수 있게 되고 반도전체(500)를 고압권선의 인입단에 부착하기 하기만 하면 되므로 작업 공정이 쉽고 간단하여 생상선을 향상시킬 수 있다. Since the semiconductor 500 is light in weight, it is possible to reduce the weight burden of the transformer and to attach the semiconductor 500 to the inlet end of the high-voltage winding, so that the work process is easy and simple to improve the production line. have.

이상에서 본 발명에 따른 실시예들이 설명되었으나, 이는 예시적인 것에 불과하며, 당해 분야에서 통상적 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 범위의 실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 다음의 특허청구범위에 의해서 정해져야 할 것이다.
Although embodiments according to the present invention have been described above, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments of the present invention are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the following claims.

100: 고압권선 120: 고압권선 인입단
200: 중압권선 300: 저압권선
400: 절연체 500: 반도전체
100: high voltage winding 120: high voltage winding lead-in end
200: medium voltage winding 300: low pressure winding
400: insulator 500: semiconductor

Claims (5)

최외측에 배치되는 고압권선;
상기 고압권선의 내측에 절연 가능하게 배치되는 중압권선;
상기 중압권선의 내측에 절연 가능하게 배치되는 저압권선; 및
상기 고압권선 중 최대 전계가 집중되는 부분을 감싸도록 배치되어 집중된 전계를 완화시키는 반도전체를 포함하는 유입식 변압기의 권선. A high-voltage winding disposed on the outermost side;
A medium voltage winding disposed to be insulated inside the high voltage winding;
A low pressure winding disposed to be insulated inside the medium pressure winding; And
The winding of the inrush transformer including a semi-conductor is disposed so as to surround the portion of the high-voltage winding is concentrated the maximum electric field. 제1항에 있어서,
상기 고압권선 중 최대 전계가 집중되는 부분은 고압권선 인입단이고, 상기 고압권선 인입단에 반도체가 감싸지는 것을 특징으로 하는 유입식 변압기의 권선. The method of claim 1,
A portion of the high voltage winding in which the maximum electric field is concentrated is a high voltage winding inlet end, and a winding of the inflow transformer, characterized in that the semiconductor is wrapped in the high voltage winding inlet end. 제2항에 있어서,
상기 고압권선 인입단의 상단에는 절연체가 구비되는 것을 특징으로 하는 유입식 변압기의 권선.The method of claim 2,
The winding of the inlet transformer, characterized in that the insulator is provided on the upper end of the high-voltage winding inlet end. 제2항에 있어서,
상기 절연체는 프레스 보드 또는 프레스 우드로 구성되는 것을 특징으로 하는 유입식 변압기의 권선. The method of claim 2,
And said insulator is comprised of a press board or a press wood. 제2항에 있어서,
상기 반도전체는 그 일면이 고압권선의 인입단 내면에 부착되고, 그 타면이 고압권선 입입단의 외면에 부착되는 것을 특징으로 하는 유입식 변압기의 권선. The method of claim 2,
The semiconductor is the winding of the inrush transformer, characterized in that one side is attached to the inner surface of the inlet end of the high-voltage winding, the other side is attached to the outer surface of the high-voltage winding inlet end.
KR1020100046168A 2010-05-17 2010-05-17 Winding coil for oil insulated transformer KR101453124B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140005067A (en) * 2012-07-04 2014-01-14 엘에스산전 주식회사 Oil filled transformer with insulating means
KR20190011923A (en) 2017-07-26 2019-02-08 현대일렉트릭앤에너지시스템(주) Oil Immersed transformer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04348508A (en) * 1991-05-27 1992-12-03 Toshiba Corp Static induction electric device
JP3155921B2 (en) * 1996-04-01 2001-04-16 三菱電機株式会社 Oil-filled electrical equipment
JP3160889B2 (en) * 1996-05-28 2001-04-25 株式会社高岳製作所 Transformer
JP2003077736A (en) 2001-09-05 2003-03-14 Hitachi Ltd Oil-filled transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140005067A (en) * 2012-07-04 2014-01-14 엘에스산전 주식회사 Oil filled transformer with insulating means
KR20190011923A (en) 2017-07-26 2019-02-08 현대일렉트릭앤에너지시스템(주) Oil Immersed transformer

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