EP0406555B1 - Mehrschariger Nebenschluss-Reaktortransformator - Google Patents

Mehrschariger Nebenschluss-Reaktortransformator Download PDF

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Publication number
EP0406555B1
EP0406555B1 EP90109760A EP90109760A EP0406555B1 EP 0406555 B1 EP0406555 B1 EP 0406555B1 EP 90109760 A EP90109760 A EP 90109760A EP 90109760 A EP90109760 A EP 90109760A EP 0406555 B1 EP0406555 B1 EP 0406555B1
Authority
EP
European Patent Office
Prior art keywords
transformer
shunt reactor
yoke
type
shared
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.)
Expired - Lifetime
Application number
EP90109760A
Other languages
English (en)
French (fr)
Other versions
EP0406555A1 (de
Inventor
Kentaro C/O Mitsubishi Denki K.K. Taninouchi
Katsuji C/O Mitsubishi Denki K.K. Sokai
Syoji C/O Mitsubishi Denki K.K. Nakatsuka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP0406555A1 publication Critical patent/EP0406555A1/de
Application granted granted Critical
Publication of EP0406555B1 publication Critical patent/EP0406555B1/de
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • H01F27/385—Auxiliary core members; Auxiliary coils or windings for reducing harmonics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/10—Single-phase transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00

Definitions

  • This invention relates to a shared shunt reactor type transformer used in a power transmission or distribution system.
  • FIGURE 1 There is known a shared shunt reactor type three-phase transformer, as disclosed in Japanese Patent Application laid open under No. 30112/1985. Its construction is schematically shown in FIGURE 1. It comprises a transformer 1, a shunt reactor 2, and a tank 3 in which the transformer and the shunt reactor are installed.
  • the transformer 1 has a limb core 1 a , an upper and a lower yoke 1 b and 1 c and a coil 1 d .
  • the excitation of the transformer 1 causes main magnetic flux to pass as shown at 1 e .
  • the shunt reactor 2 has an upper yoke 2 b a gap core 2 a , and a coil 2 d .
  • the excitation of the reactor 2 causes magnetic flux to pass as shown at 2 e .
  • the coils 1 d and 2 d are so wound respectively that the main magnetic flux passing through the limb core 1 a of the transformer 1 may be of the same polarity as that passing through the gap core 2 a of
  • FIGURE 2 shows a case that a transformer 1 and a shunt reactor 2 are separate from each other.
  • the transformer 1 is installed in a tank 4, and the shunt reactor 2 in another tank 5.
  • the reactor 2 includes a lower yoke 2 c .
  • the transformer 1 and the reactor 2 are otherwise of the same construction as those which have been described with reference to FIGURE 1. If the reactor 2 is connected to the top of the transformer 1 in a common tank 3 so that the upper yoke 1 b of the transformer 1 may serve as the lower yoke 2 c of the reactor 2, too, a shared shunt reactor type transformer as shown in FIGURE 1 is obtained.
  • the modes in which magnetic flux passes through the upper yoke 1 b of the transformer 1 consist of three cases, i.e.:
  • FIGURE 1 exhibits the same performance as the separate type shown in FIGURE 2, and yet calls for a smaller space for installation, if the upper yoke 1 b of the transformer 1 has so large a cross-sectional area that it may not be magnetically saturated in any of the three cases.
  • FIGURE 3 showing a shared shunt reactor type transformer of a single-phase shell-type.
  • the transformer 1 has a limb core 1 a , a yoke 1 c , and a coil 1 d .
  • the yoke 1 c has a diminished yoke X and a bypass yoke Y.
  • the apparatus also includes a shunt reactor 2.
  • the reactor 2 has a gap core 2 a , and a coil 2 d which is surrounded by the diminished yoke X of the transformer 1 and the bypass yoke Y.
  • the diminished yoke X and the bypass yoke Y form a yoke for the reactor 2, too.
  • the excitation of the transformer 1 causes a main magnetic flux to pass as shown at 1 e
  • the excitation of the shunt reactor 2 causes magnetic flux to pass as shown at 2 e
  • the coils 1 d and 2 d are wound in such a way that the magnetic flux 1 e and 2 e passing through the diminished yoke X may cancel each other.
  • FIGURE 4 showing a case that a shell type transformer 1 and a shell type shunt reactor 2 are so positioned that the respective yokes 1 c and 2 b thereof may stay apart from each other, but in a mutually closely adjacent relation.
  • the main magnetic flux 1 e and the magnetic flux 2 e are designed for passing in opposite directions through the yoke 1 c of the transformer 1 and the yoke 2 b of the reactor 2, respectively.
  • the apparatus shown in FIGURE 3 is obtained if the transformer 1 and the shunt reactor 2 which are shown in FIGURE 4 are so combined that the yoke 1 c of the transformer 1 may serve as the yoke 2 b of the reactor 2, too.
  • the magnetic fluxes 1 e and 2 e pass in the opposite directions, they cancel each other when passing through the diminished yoke X in the apparatus shown in FIGURE 3. It is, therefore, sufficient for the diminished yoke X to have a cross-sectional area which allows for the passage of the amount of magnetic flux equal to the difference between 1 e and 2 e , and which is smaller than the original cross-sectional area of the yoke 1 c .
  • FIGURE 5 showing the magnetic flux distribution which occurs when only the transformer 1 is excited.
  • the main magnetic flux of the transformer 1 is distributed through the diminished yoke X and the bypass yoke Y. Therefore, it is sufficient for the diminished yoke X and the bypass yoke Y to have a sum of cross-sectional areas of yokes X and Y which is equal to the original cross-sectional area of the yoke 1 c .
  • the apparatus shown in FIGURE 3 enables a reduction in the cross-sectional area of the yoke of the transformer 1 by an amount equal to the difference between that of 1 c as shown in FIGURE 4 or 5 and that of X, and thereby a smaller space for installation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Transformers For Measuring Instruments (AREA)

Claims (5)

  1. Transformator mit gemeinsam benutzter Nebenschlußspule, mit:
    einem Nebenschlußjoch (Y) eines Transformators (1), welches als Joch einer Nebenschlußspule sowie als Teil eines Joches des Transformators (1) dient;
    dadurch gekennzeichnet, daß
    das Joch des Transformators (1) teilweise in zwei Teile eines verkleinerten Joches (X) und des Nebenschlußjoches (Y) aufgeteilt ist;
    ein Spaltkern (2a) der Nebenschlußspule (2) in einem offenen Zwischenraum vorgesehen ist, der zwischen den verkleinerten und Nebenschlußjochs (X, Y) des Transformators (1) ausgebildet ist; und
    eine Wicklung (2d) der Nebenschlußspule (2) um den Spaltkern (2a) der Nebenschlußspule (2) gewunden ist, um einen Magnetfluß (2e) in einer Richtung zu erzeugen, die den Magnetfluß des Transformators reduziert, welcher im verkleinerten Joch (X) des Transformators (1) erzeugt wird.
  2. Transformator mit gemeinsam benutzter Nebenschlußspule nach Anspruch 1, bei welchem der Transformator (1) und die Nebenschlußspule (2) jeweils aus einem Mantel-Typ gebildet sind.
  3. Transformator mit gemeinsam benutzter Nebenschlußspule nach Anspruch 1, bei welchem der Transformator (1) und die Nebenschlußspule (2) jeweils als Kern-Typ ausgebildet sind.
  4. Transformator mit gemeinsam benutzter Nebenschlußspule nach Anspruch 1, 2 oder 3, bei welchem der Transformator (1) und die Nebenschlußspule (2) jeweils als Einphasen-Typ ausgebildet sind.
  5. Transformator mit gemeinsam benutzter Nebenschlußspule nach Anspruch 1, 2 oder 3, bei welchem der Transformator (1) und die Nebenschlußspule (2) jeweils als Dreiphasen-Typ ausgebildet sind.
EP90109760A 1989-07-06 1990-05-22 Mehrschariger Nebenschluss-Reaktortransformator Expired - Lifetime EP0406555B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP173037/89 1989-07-06
JP1173037A JPH0682582B2 (ja) 1989-07-06 1989-07-06 分路リアクトル共有形変圧器

Publications (2)

Publication Number Publication Date
EP0406555A1 EP0406555A1 (de) 1991-01-09
EP0406555B1 true EP0406555B1 (de) 1993-08-11

Family

ID=15953033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109760A Expired - Lifetime EP0406555B1 (de) 1989-07-06 1990-05-22 Mehrschariger Nebenschluss-Reaktortransformator

Country Status (5)

Country Link
EP (1) EP0406555B1 (de)
JP (1) JPH0682582B2 (de)
CN (1) CN1017846B (de)
DE (1) DE69002708T2 (de)
HK (1) HK1003811A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993014508A1 (en) * 1992-01-17 1993-07-22 Mitsubishi Denki Kabushiki Kaisha Transformer mounted on vehicle
TWI378478B (en) * 2007-01-09 2012-12-01 Mitsubishi Electric Corp Reactor-jointed transformer
US8274804B2 (en) 2008-03-04 2012-09-25 Mitsubishi Electric Corporation Voltage transforming apparatus
JP5081063B2 (ja) * 2008-05-22 2012-11-21 本田技研工業株式会社 複合型変圧器、および電力変換回路
CA2732352C (en) * 2008-07-30 2014-03-18 Toshiba Mitsubishi-Electric Industrial Systems Corporation Power conversion device
CN102867628A (zh) * 2012-09-29 2013-01-09 湖南大学 一种磁集成式集成滤波电感变压器
DE102016202797A1 (de) 2016-02-24 2017-08-24 Bayerische Motoren Werke Aktiengesellschaft Kombinierter Transformator und LLC Resonanzwandler
CN112530676B (zh) * 2020-11-17 2022-09-02 青岛中加特电气股份有限公司 双铁芯变压器
CN113012903A (zh) * 2021-02-04 2021-06-22 中车株洲电力机车研究所有限公司 一种适用于铁心磁路复用电气系统的控制架构

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0630112A (ja) * 1992-04-30 1994-02-04 American Teleph & Telegr Co <Att> ディジタルチャネル接続確立方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030112A (ja) * 1983-07-05 1985-02-15 Fuji Electric Co Ltd 分路リアクトル共有形変圧器
JPH0785653B2 (ja) * 1986-12-22 1995-09-13 三菱電機株式会社 サイクロコンバ−タ用三相変圧器

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0630112A (ja) * 1992-04-30 1994-02-04 American Teleph & Telegr Co <Att> ディジタルチャネル接続確立方法

Also Published As

Publication number Publication date
CN1017846B (zh) 1992-08-12
EP0406555A1 (de) 1991-01-09
HK1003811A1 (en) 1998-11-06
JPH0338807A (ja) 1991-02-19
CN1048626A (zh) 1991-01-16
JPH0682582B2 (ja) 1994-10-19
DE69002708T2 (de) 1993-11-25
DE69002708D1 (de) 1993-09-16

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