JPS615510A - Structure of transformer winding - Google Patents

Structure of transformer winding

Info

Publication number
JPS615510A
JPS615510A JP12527384A JP12527384A JPS615510A JP S615510 A JPS615510 A JP S615510A JP 12527384 A JP12527384 A JP 12527384A JP 12527384 A JP12527384 A JP 12527384A JP S615510 A JPS615510 A JP S615510A
Authority
JP
Japan
Prior art keywords
winding
insulator
shunt
line terminal
series
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12527384A
Other languages
Japanese (ja)
Inventor
Ryoji Nakatake
良二 中武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12527384A priority Critical patent/JPS615510A/en
Publication of JPS615510A publication Critical patent/JPS615510A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/324Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/288Shielding
    • H01F27/289Shielding with auxiliary windings

Landscapes

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

Abstract

PURPOSE:To miniaturize the titled structure by reducing the main insulation disttance between windings by a method wherein the opposed part to the tertiary winding in the neighborhood of the medium-tension line of a shunt winding, the opposed part to a series winding in the neighborhood of the high-tension line terminal of the shunt winding, and the opposed part to the series winding in the neighborhood of the medium neutral point terminal of the shunt winding are each provided with an insulator. CONSTITUTION:The tertiary winding 2, shunt winding 3, and series winding 4 are arranged outside an iron core 1. With respect to the shunt winding 3, an insulator 5 is as conventional loaded to the opposed part to the series winding 4 located at the center in the axial direction, i.e. in the neighborhood of a high-tension line terminal U, and an insulator 6 is loaded in a space formed by reducing the number of turns of the conductor in the opposed part to the tertiary winding 2 in the neighborhood of the medium- tension line terminal (u); further, an insulator 7 is loaded in a space formed by reducing the number of turns of the winding conductor in the opposed part to the series winding 4 in the neighborhood of the medium neutral point terminal Q. With respect to the series winding 4, an insulator 8 is loaded in a space formed by reducing the number of turns of the winding conductor located in the opposite part to the shunt winding 3 in the neighborhood of the high-tension line terminal U.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は変圧器巻線構造、特に、三次巻線、分路巻線お
よび直列巻線を有する単巻変圧器に好適な変圧器巻線構
造に関する。
Detailed Description of the Invention [Field of Application of the Invention] The present invention relates to a transformer winding structure, particularly a transformer winding structure suitable for an autotransformer having a tertiary winding, a shunt winding and a series winding. Regarding.

〔発明の背景〕[Background of the invention]

一般に、超高圧および超々高圧変圧器は、第2図(示す
ように鉄心1の外側に三次巻線2、分路4巻線3および
直列巻線4を同心的に配置した巻線構造を有する。分路
巻線3の両端から中圧線路端子Uと中圧中性点端子Qが
基中され、中圧線路端子Uは直列巻竺4の上下端子と電
気−に接続されている。また直列巻線4の軸方向中央部
から高圧線路端子Uが引き出されている。
In general, ultra-high voltage and ultra-super high voltage transformers have a winding structure in which a tertiary winding 2, a shunt 4 winding 3, and a series winding 4 are arranged concentrically on the outside of an iron core 1, as shown in FIG. A medium voltage line terminal U and a medium voltage neutral point terminal Q are connected from both ends of the shunt winding 3, and the medium voltage line terminal U is electrically connected to the upper and lower terminals of the series winding 4. A high voltage line terminal U is drawn out from the axial center of the series winding 4.

このような単巻変圧器における商用周波試験時の巻線内
電位分布の一例を第3図に示している。
FIG. 3 shows an example of the potential distribution within the winding during a commercial frequency test in such an autotransformer.

同図において、voは高圧線路端子Uの電位、vIは中
圧線路端子Uの電位、■3は低圧線路端子aの電位であ
る。
In the figure, vo is the potential of the high-voltage line terminal U, vI is the potential of the medium-voltage line terminal U, and 3 is the potential of the low-voltage line terminal a.

第2図に示すように、三次巻線2と分路巻線3との間の
主絶縁距離を61、分路巻線3と直列巻線4との間の主
絶縁距離をt2とすると、絶縁設計上の主絶縁距離t1
は中圧線路端子U付近での零位傾度EIの制約面から決
定され、主絶縁距離t!は高圧線路端子U付近での電位
傾度E2の制豹面から決定されている。ここで、El 
m 、Ezは、となり、このようにしぞ各巻線間の寸法
が決定されてしまう。
As shown in FIG. 2, if the main insulation distance between the tertiary winding 2 and the shunt winding 3 is 61, and the main insulation distance between the shunt winding 3 and the series winding 4 is t2, then Main insulation distance t1 in insulation design
is determined from the constraint surface of the zero slope EI near the medium voltage line terminal U, and the main insulation distance t! is determined based on the control of the potential gradient E2 near the high voltage line terminal U. Here, El
m and Ez become, and the dimensions between each winding are determined in this way.

この各巻線間の寸法を縮小するため、例えば特公昭58
−13015号公報で紹介された方法に従って、第2図
に示すように、分路巻線3における直列巻線4の対向部
で、かつ高圧線路端子Uと対向する巻線軸方向の中央部
付近に、巻線幅調整用絶縁物5を配置し、これによって
主絶縁距離t2を縮小して小形化を図っている。しかし
ながら、巻線1脚当りの大容量化がすすむにつれ、この
巻線構造では鉄道輸送限界を越えてしまう。
In order to reduce the dimensions between each winding, for example,
According to the method introduced in Publication No. 13015, as shown in FIG. , an insulator 5 for adjusting the winding width is arranged, thereby reducing the main insulation distance t2 and achieving miniaturization. However, as the capacity of each winding wire becomes larger, this winding structure exceeds the limit for rail transport.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、巻線間の主絶縁距離を縮小して小形化
した変圧器巻線構造を提供するにある。
An object of the present invention is to provide a compact transformer winding structure by reducing the main insulation distance between windings.

〔発明の概要〕 本発明は、分路巻線の中圧線路付近の三次巻線との対向
部と、分路巻線の高圧線路端子付近の直列巻線との対向
部と、分路巻線の中圧中性点端子付近の直列巻線との対
向部トノ、それぞれ絶縁物を設け、この絶縁物によって
巻線の電位傾度の上昇を抑えて主絶縁距離を縮小したこ
とを特徴とする。
[Summary of the Invention] The present invention provides a portion of a shunt winding facing a tertiary winding near a medium voltage line, a portion of the shunt winding facing a series winding near a high voltage line terminal, and a portion of a shunt winding facing a tertiary winding near a high voltage line terminal; The main insulation distance is reduced by providing an insulator in each of the tonneaus facing the series winding near the medium-voltage neutral point terminal of the line, and suppressing an increase in the potential gradient of the winding with this insulator. .

〔発明の実施例〕[Embodiments of the invention]

以下本発明を第1図に示す実施例によって説明する。 The present invention will be explained below with reference to an embodiment shown in FIG.

鉄心1の外側には、三次巻線2、分路巻線3および直列
巻線4が配置されている。分路巻線3について見ると、
その軸方向の′中央部、つま9高圧線路端子U付近の直
列巻線4との対向部には従来と同様に絶縁物5が装着さ
れ、また中圧線路端子Uの付近の三次巻線2との対向部
には、導体の巻回数を減らして形成したスペースに絶縁
物6が装着され、更に、中圧中性点端子Qの付近の直列
巻線4との対向部には、巻線導体の巻回数を減らし  
      央て形成したスペースに絶縁物7が装着さ
れでいる。
A tertiary winding 2, a shunt winding 3, and a series winding 4 are arranged outside the iron core 1. Looking at shunt winding 3,
An insulator 5 is attached to the central part of the shaft in the axial direction, a part facing the series winding 4 near the high-voltage line terminal U of the claw 9, as in the past, and a tertiary winding 2 near the medium-voltage line terminal U. An insulator 6 is installed in the space formed by reducing the number of turns of the conductor, and a winding is installed in the area facing the series winding 4 near the medium-voltage neutral terminal Q. Reduce the number of turns of the conductor
An insulator 7 is installed in the space formed at the center.

また直列巻線4について見ると、高圧線路端子U付近の
分路巻線3との対向部における巻線導体の巻回数を減ら
して形成したスペースに絶縁物8を装着している。
Further, regarding the series winding 4, an insulator 8 is installed in a space formed by reducing the number of turns of the winding conductor at a portion facing the shunt winding 3 near the high-voltage line terminal U.

このような構成とすることにより、三次巻線2と分路巻
線3との間の主絶縁の電位傾度E1は、絶縁物6の厚み
をδりとすると、 となり、従来と同一電位傾度Elのもとで、絶縁物6の
厚みδ2に応じて主絶縁距離t!を縮小することができ
る。
With this configuration, the potential gradient E1 of the main insulation between the tertiary winding 2 and the shunt winding 3 is as follows, when the thickness of the insulator 6 is δ, which is the same potential gradient El as in the conventional case. Under , the main insulation distance t! depends on the thickness δ2 of the insulator 6. can be reduced.

また分路巻線3と直列巻線4との間の高圧線路端子U付
近での主絶縁の電位傾度E2は、絶縁物5.8の厚みを
それぞれδ1.δ4とすると、となり、絶縁物5に加え
て絶縁物8の厚みδ4に応じて、従来と同じ電位傾度E
2のもとて主絶縁距離t!を縮小することができる。
Further, the potential gradient E2 of the main insulation near the high-voltage line terminal U between the shunt winding 3 and the series winding 4 is determined by the thickness of the insulator 5.8 as δ1. If δ4, then, depending on the thickness δ4 of the insulator 8 in addition to the insulator 5, the potential gradient E is the same as the conventional one.
Main insulation distance t! can be reduced.

また中圧中性点端子Q付近の主要絶縁電位傾度E3は、
絶縁物7の厚みをδ3とすれば、とな9、電位傾度E3
は主絶縁距離t2の縮小に伴う増加を絶縁物7の厚みδ
3により調整し、電位傾度E2より低い値にすることが
できる。
In addition, the main insulation potential gradient E3 near the medium voltage neutral point terminal Q is:
If the thickness of the insulator 7 is δ3, then 9, the potential gradient E3
is the thickness δ of the insulator 7 which increases with the reduction of the main insulation distance t2.
3, it can be adjusted to a value lower than the potential gradient E2.

このようにして、各絶縁物の厚みを適宜調整することに
より、巻線の軸方向に沿って電位傾度をほぼ均等にする
ことができ、これによって主絶縁寸法tl t tlを
縮小することができる。
In this way, by appropriately adjusting the thickness of each insulator, it is possible to make the potential gradient approximately equal along the axial direction of the winding, thereby reducing the main insulation dimension tl t tl. .

上記の実施例では直列巻線4にも絶縁物8を設けたが、
分路巻線3の絶縁物5の厚みδ1を調整することによっ
て絶縁物8を省略しても同様の効果が得られる。
In the above embodiment, the insulator 8 was also provided in the series winding 4, but
The same effect can be obtained even if the insulator 8 is omitted by adjusting the thickness δ1 of the insulator 5 of the shunt winding 3.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、分路巻線3の中圧線路端
子U付近の三次巻線2との対向部と、高圧線路端子U付
近の直列巻線4と対向する部分の分路巻線と、分路巻線
3の中圧中性点端子Q付近の直列巻線4との対向部に、
それぞれ絶縁物を設けたため、各部の電位傾度を補正し
て主絶縁距離を縮小し、これによって小型の変圧器巻線
構造が得られる。
As explained above, the present invention provides a shunt winding in the portion of the shunt winding 3 that faces the tertiary winding 2 near the medium-voltage line terminal U, and the portion of the shunt winding that faces the series winding 4 near the high-voltage line terminal U. In the opposite part between the wire and the series winding 4 near the intermediate voltage neutral point terminal Q of the shunt winding 3,
Since each insulator is provided, the potential gradient of each part is corrected and the main insulation distance is reduced, resulting in a compact transformer winding structure.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例による変圧器巻線構造の断面
図、第2図は従来の変圧器巻線構造の断面図、第3図は
第2図の構成における商用周波試験時の巻線内電位分布
図である。 1・・・鉄心、2・・・三次巻線、3・・・分路巻線、
4・・・直列巻線、5〜8・・・絶縁物、U・・・中圧
線路端子、Q・・・中正中性点端子、U・・・高圧線路
端子。
FIG. 1 is a sectional view of a transformer winding structure according to an embodiment of the present invention, FIG. 2 is a sectional view of a conventional transformer winding structure, and FIG. 3 is a sectional view of the structure shown in FIG. 2 during a commercial frequency test. It is a potential distribution diagram within a winding. 1... Iron core, 2... Tertiary winding, 3... Shunt winding,
4...Series winding, 5-8...Insulator, U...Medium voltage line terminal, Q...Medium neutral point terminal, U...High voltage line terminal.

Claims (1)

【特許請求の範囲】[Claims] 1、鉄心の外周に、三次巻線、分路巻線および直列巻線
の順に配置して成り、上記分路巻線は両端に中圧線路端
子と中圧中性点端子を有し、上記直列巻線は、その両端
を上記中圧線路端子に接続し、かつ軸方向中央部から導
出した高圧線路端子を有しており、上記高圧線路端子付
近の上記直列巻線と対向する部分の上記分路巻線に絶縁
物を設けた変圧器巻線構造において、上記分路巻線の上
記三次巻線に対向する上記中圧線路端子付近と、上記分
路巻線の上記直列巻線に対向する上記中圧中性点端子付
近とに、それぞれ絶縁物を設けたことを特徴とする変圧
器巻線構造。
1. A tertiary winding, a shunt winding, and a series winding are arranged in this order around the outer circumference of the iron core, and the shunt winding has a medium voltage line terminal and a medium voltage neutral point terminal at both ends, and the above The series winding has both ends connected to the medium-voltage line terminal and a high-voltage line terminal led out from the center in the axial direction, and the above-mentioned part of the series winding near the high-voltage line terminal facing the series winding. In a transformer winding structure in which an insulator is provided in a shunt winding, a portion near the medium voltage line terminal facing the tertiary winding of the shunt winding and a region facing the series winding of the shunt winding A transformer winding structure characterized in that an insulator is provided near the intermediate voltage neutral point terminal and the intermediate voltage neutral point terminal.
JP12527384A 1984-06-20 1984-06-20 Structure of transformer winding Pending JPS615510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12527384A JPS615510A (en) 1984-06-20 1984-06-20 Structure of transformer winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12527384A JPS615510A (en) 1984-06-20 1984-06-20 Structure of transformer winding

Publications (1)

Publication Number Publication Date
JPS615510A true JPS615510A (en) 1986-01-11

Family

ID=14905991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12527384A Pending JPS615510A (en) 1984-06-20 1984-06-20 Structure of transformer winding

Country Status (1)

Country Link
JP (1) JPS615510A (en)

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