EP3685411B1 - Agencement d'enroulement - Google Patents

Agencement d'enroulement Download PDF

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Publication number
EP3685411B1
EP3685411B1 EP18829752.7A EP18829752A EP3685411B1 EP 3685411 B1 EP3685411 B1 EP 3685411B1 EP 18829752 A EP18829752 A EP 18829752A EP 3685411 B1 EP3685411 B1 EP 3685411B1
Authority
EP
European Patent Office
Prior art keywords
winding
connection
switching line
conductor
connecting element
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.)
Active
Application number
EP18829752.7A
Other languages
German (de)
English (en)
Other versions
EP3685411A1 (fr
Inventor
Hans Jürgen Wagner
Jürgen Gangel
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens Energy Global GmbH and Co KG
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 Siemens Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Priority to PL18829752T priority Critical patent/PL3685411T3/pl
Publication of EP3685411A1 publication Critical patent/EP3685411A1/fr
Application granted granted Critical
Publication of EP3685411B1 publication Critical patent/EP3685411B1/fr
Active legal-status Critical Current
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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • 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
    • H01F27/02—Casings
    • 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
    • H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
    • 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
    • H01F27/36—Electric or magnetic shields or screens
    • 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
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/10—Connecting leads to windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings

Definitions

  • the invention relates to a winding arrangement for a transformer, in particular with an operating voltage of Um ⁇ 72.5kV, the winding arrangement having at least one winding that ends in a winding conductor, the winding conductor being connected to a switching line which is used to interconnect the winding with others Windings is formed.
  • the winding arrangement according to the invention can be used in various types of transformers, in particular in distribution transformers, such as in liquid-filled distribution transformers.
  • the GB 800 992 A discloses a transformer and a field coil.
  • a connector is used to connect two partial windings inside a winding.
  • a winding arrangement according to claim 1.
  • the winding arrangement having at least one winding that is in a winding conductor ends, wherein the winding conductor is connected to a switching line which is designed to interconnect the winding with other windings, it is provided that the connection of the switching line to the winding conductor is arranged inside the winding.
  • connection of the winding conductor to the switching line which generally has a larger conductor cross-section than the winding conductor, inside the winding and the formation of the diversion line with the switching line significantly reduces the electrical field strength at the diversion line.
  • the winding is arranged around a winding axis, for example, relative to the winding axis, there is still a part of the winding radially outside the connection according to the invention and also a part of the winding axially before and after the connection.
  • the winding conductors of the winding thus insulate the connection largely, in particular completely, from the space outside the winding.
  • the invention is advantageously used for the high-voltage winding, that is to say the high-voltage winding, of a transformer.
  • connection between the switching line and the winding conductor is a crimp connection.
  • a crimp connection is created when two components are connected to one another by plastic deformation, for example by flanging, squeezing, crimping or folding.
  • a crimp connection is not in itself a detachable connection.
  • a crimp connection is form-fitting.
  • a connecting element is generally used, into which one or both conductors to be connected are inserted.
  • the connecting element can be designed as a sleeve or cable lug, for example.
  • crimping also creates a mechanical connection between the two conductors to be connected, here the winding conductor and the switching line.
  • Crimping pliers or stop presses are used as tools for crimping. The shape of the tool and the pressing force must each be adapted in such a way that a form-fitting connection is created, but none of the conductors is destroyed, in particular broken, in the process.
  • the two conductors can also be soldered or welded.
  • connection element which establishes the connection between the switching line and the winding conductor, is surrounded by an electrical shield. In this way, the electrical field of the winding is shielded from the switching line in a simple manner.
  • the electrical shield also surrounds the part of the winding conductor adjoining the connecting element and the part of the switching line adjoining the connecting element. As a result, good shielding of the connecting element is achieved in any case.
  • the electrical shield can most simply comprise a conductive layer which surrounds at least the connecting element. Conductive foils, braids or sheets are conceivable here.
  • the conductive layer can contain, for example, copper.
  • the electrical shielding, the part of the winding conductor adjoining the connecting element and the part of the switching line adjoining the connecting element can be surrounded by a common insulation. As a result, there can be no conductive connection or flashover from the rest of the winding to the switching line.
  • a part of the winding is still located both radially outside a connection between a switching line and a winding conductor and axially before and after this connection between the switching line and the winding conductor.
  • the connection in particular in the form of the connecting element, is therefore surrounded in the axial direction on both sides by winding conductors.
  • further winding conductors or further sections of the same winding conductor are present at least outside the connection, in particular outside the connecting element.
  • An insulation of the winding can be located radially within, for example.
  • This embodiment variant is therefore suitable for the beginning of the winding which, viewed in the radial direction of the winding, lies on the inside.
  • a part of the winding is still located both radially within a connection of a switching line to a winding conductor and axially before and after this connection of the switching line to the winding conductor.
  • the connection in particular in the form of the connecting element, is therefore surrounded in the axial direction on both sides by winding conductors. In the radial direction, further winding conductors or sections of the same winding conductor are present at least within the connection, in particular within the connecting element.
  • An insulation of the winding can be located radially outside, for example.
  • This embodiment variant is therefore suitable for the winding end which, viewed in the radial direction of the winding, is on the outside.
  • a part of the winding is still located radially inside, radially outside, axially before and axially after a connection of a switching line to a winding conductor.
  • the connection in particular in the form of the connecting element, is therefore surrounded on all sides by winding conductors.
  • This variant is suitable for taps which, viewed radially, lie between the start of the winding and the end of the winding.
  • connection according to the invention are provided per winding. This means that two or all three design variants can also be present on one winding. In particular, there can be several connections of the third variant embodiment.
  • the invention also comprises a transformer, in particular a power transformer, preferably an oil-filled distribution transformer, with a winding arrangement according to the invention.
  • Power transformers are transformers that are designed for high performance, for example for use in electrical energy networks. Power transformers are often designed as three-phase three-phase AC transformers. Power transformers in the range from a few 10 kVA to a few MVA are used in local transformer stations that serve to supply the low-voltage networks and are known as distribution transformers. They are often filled with liquid, usually oil-filled.
  • Fig. 1 shows the upper end of a winding arrangement according to the invention with a winding 1 which is arranged around a winding axis 5. Further windings can also be arranged radially inside and / or outside the winding 1.
  • the winding 1 is usually wound around a core leg, not shown here, of a transformer core and consists of one or more winding conductors 3.
  • the winding conductor 3 can be a winding wire, for example.
  • a so-called discharge is provided, i.e. a conductive connection, which connects the end of the winding conductor 3 of the winding 1 through the transformer housing with a line outside the transformer.
  • the diversion also includes so-called switching lines 2, by means of which the individual windings 1 of the transformer can be connected to one another while still inside the transformer housing. In this way, the three phases of a three-phase AC transformer can be interconnected.
  • the winding 1 ends in a winding conductor 3 and is connected by means of a connecting element 4 to a switching line 2, which is used to interconnect the winding 1 with other windings.
  • the connecting element 4 is arranged in the interior of the winding. This means, on the one hand, that part of the winding 1 is still located in the radial direction of the winding 1, i.e. normal to the winding axis 5, at least outside the connecting element 4, here the majority of the winding 1.
  • the end of the winding conductor 3 forms here the beginning of the winding of winding 1, which is designed here as a high-voltage winding.
  • the connecting element 4 lies here - viewed in the radial direction - on the inside on the insulation of the winding 1 from the main scattering gap, and this in turn lies between the high-voltage winding and the low-voltage winding.
  • connection element 4 corresponds to FIG Fig. 1 the previously described first variant for the beginning of the winding.
  • the connecting element 4 could, however, according to the second variant, also be used for the winding end that is on the outside in the radial direction of the winding 1, see the alternative position 9 of the connecting element 4 drawn as a vertical line.
  • the connecting element 4 would then be radially outside, for example Surrounded only by the insulation of the winding 1, on all other sides (radially inside, axially) by the winding conductors of the winding 1.
  • the connecting element 4 could, however, also be used for a tap in the radial direction of the winding 1 according to the third embodiment variant lies somewhere between the beginning of the winding and the end of the winding, see the exemplary alternative position 8 of the connecting element 4 drawn as a vertical line.
  • the connecting element 4 would then be surrounded on all sides by winding conductors of winding 1.
  • the switching line 2 has a larger conductor cross-section than the winding conductor 3, the electric field strength outside of the winding 2 is lower on the outside of the switching line 2 than in the winding conductor 3, if this instead of the switching line 2 from the winding 1 - in Fig. 1 up from winding 1 - would be led out.
  • FIG. 2 the connecting element and - partially in sectional view - its immediate surroundings are shown enlarged.
  • Both the switching line 2 and the winding conductor 3, which has a smaller cross section than the switching line 2 are routed into the connecting element 4 and are connected to one another in a mechanically and electrically conductive manner by means of a crimp connection.
  • An electrical shield 6 surrounds the connecting element 4, the part of the winding conductor 3 adjoining the connecting element 4 and the part of the switching line 2 adjoining the connecting element 4 Fig. 1 ) and beyond that, an insulation 7 is provided which surrounds the electrical shield 6, the part of the winding conductor 3 adjoining the connecting element 4 and the part of the switching line 2 adjoining the connecting element 4.

Landscapes

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

Claims (10)

  1. Agencement d'enroulement d'un transformateur, ayant notamment une tension moyenne de fonctionnement de Um ≥ à 72,5 kV, dans lequel l'agencement d'enroulement a au moins un enroulement (1) qui se termine en un conducteur (3) d'enroulement, dans lequel le conducteur (3) d'enroulement est relié à une ligne (2) de connexion, qui est constituée pour connecter l'enroulement (1) à d'autres enroulements, caractérisé en ce que la liaison de la ligne (2) de connexion au conducteur (3) de l'enroulement est disposé à l'intérieur de l'enroulement (1).
  2. Agencement d'enroulement suivant la revendication 1, caractérisé en ce que la liaison entre la ligne (2) de connexion et le conducteur (3) de l'enroulement est un sertissage.
  3. Agencement d'enroulement suivant la revendication 1 ou 2, caractérisé en ce qu'un élément (4) de liaison, qui ménage la liaison entre la ligne (2) de connexion et le conducteur (3) de l'enroulement, est entouré d'un blindage (6) électrique.
  4. Agencement d'enroulement suivant la revendication 3, caractérisé en ce que le blindage (6) électrique entoure également la partie, se raccordant à l'élément (4) de liaison, du conducteur (3) de l'enroulement et la partie, se raccordant à l'élément (4) de liaison, de la ligne (2) de connexion.
  5. Agencement d'enroulement suivant la revendication 3 ou 4, caractérisé en ce que le blindage (6) électrique comprend une couche conductrice, qui entoure au moins l'élément (4) de liaison.
  6. Agencement d'enroulement suivant la revendication 3, 4 ou 5, caractérisé en ce que le blindage (6) électrique, la partie, se raccordant à l'élément (4) de liaison, du conducteur (3) de l'enroulement et la partie, se raccordant à l'élément (4) de liaison, de la ligne (2) de connexion sont entourés d'un isolant (7) commun.
  7. Agencement suivant l'une des revendications précédentes, caractérisé en ce qu'encore une partie de l'enroulement (1) se trouve tant à l'extérieur radialement d'une liaison d'une ligne (2) de connexion à un conducteur (3) de l'enroulement qu'également axialement avant et après cette liaison de la ligne (2) de connexion au conducteur (3) de l'enroulement.
  8. Agencement suivant l'une des revendications précédentes, caractérisé en ce qu'encore une partie de l'enroulement (1) se trouve tant radialement à l'intérieur d'une liaison d'une ligne (2) de connexion à un conducteur (3) de l'enroulement qu'également axialement avant et après cette liaison de la ligne (2) de connexion au conducteur (3) de l'enroulement.
  9. Agencement suivant l'une des revendications précédentes, caractérisé en ce qu'encore une partie de l'enroulement se trouve radialement à l'intérieur, radialement à l'extérieur, axialement avant et axialement après, une liaison d'une ligne (2) de connexion à un conducteur (3) de l'enroulement (1).
  10. Transformateur, notamment transformateur de puissance, de préférence transformateur de distribution rempli d'huile, ayant un agencement d'enroulement suivant l'une des revendications 1 à 9.
EP18829752.7A 2017-12-20 2018-12-06 Agencement d'enroulement Active EP3685411B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18829752T PL3685411T3 (pl) 2017-12-20 2018-12-06 Układ uzwojenia

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017223316.8A DE102017223316A1 (de) 2017-12-20 2017-12-20 Wicklungsanordnung
PCT/EP2018/083865 WO2019121048A1 (fr) 2017-12-20 2018-12-06 Agencement d'enroulement

Publications (2)

Publication Number Publication Date
EP3685411A1 EP3685411A1 (fr) 2020-07-29
EP3685411B1 true EP3685411B1 (fr) 2021-08-11

Family

ID=64949222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18829752.7A Active EP3685411B1 (fr) 2017-12-20 2018-12-06 Agencement d'enroulement

Country Status (6)

Country Link
US (1) US11626242B2 (fr)
EP (1) EP3685411B1 (fr)
CN (1) CN111480209A (fr)
DE (1) DE102017223316A1 (fr)
PL (1) PL3685411T3 (fr)
WO (1) WO2019121048A1 (fr)

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB376387A (en) 1930-04-17 1932-07-14 Koch & Sterzel Ag High potential winding for transformers, testing transformers, choking coils and the like
DE663163C (de) * 1934-01-20 1938-07-30 Siemens Schuckertwerke Akt Ges Magnetspule, insbesondere Zaehlerspannungsspule
GB660668A (en) * 1949-03-11 1951-11-07 Dow Corning Ltd Improvements in or relating to electric transformers
US2728879A (en) * 1950-11-18 1955-12-27 Gen Electric Electrical coil
US2787769A (en) * 1953-07-14 1957-04-02 Gen Electric Tapped coil
GB800992A (en) * 1953-12-24 1958-09-03 Plessey Co Ltd Improvements in or relating to electrical apparatus
US4091349A (en) * 1975-12-29 1978-05-23 General Electric Company High voltage winding lead and terminal structure
WO1997045931A1 (fr) 1996-05-29 1997-12-04 Asea Brown Boveri Ab Conducteur isole pour enroulements a haute tension
SE520942C2 (sv) 2002-01-23 2003-09-16 Abb Ab Elektrisk maskin samt användning av sådan
JP5009046B2 (ja) * 2007-05-21 2012-08-22 株式会社鷺宮製作所 電磁コイルおよびその製造方法
EP2426680A1 (fr) * 2010-09-01 2012-03-07 ABB Technology AG Transformateur refroidie ayant au moins un enroulement de ruban
US8759683B2 (en) * 2011-07-15 2014-06-24 Hubbell Incorporated Spark-over prevention device for high-voltage bushing
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DE102011089251B4 (de) 2011-12-20 2014-05-22 Siemens Aktiengesellschaft Auslöseeinheit zum Betätigen einer mechanischen Schalteinheit einer Vorrichtung
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DE202014105168U1 (de) * 2013-11-26 2014-11-13 Wen-Hsiang Wu Li Planarwicklungsmodul und Planartransformator, der dieses verwendet
JP6678292B2 (ja) 2015-02-19 2020-04-08 パナソニックＩｐマネジメント株式会社 コモンモードノイズフィルタ
CN205140713U (zh) * 2015-11-12 2016-04-06 浙江正泰电器股份有限公司 带有绕埋式引线的线圈
CN206148718U (zh) 2016-11-10 2017-05-03 浙江春晖智能控制股份有限公司 一种防爆电磁阀线圈用引出电缆

Also Published As

Publication number Publication date
DE102017223316A1 (de) 2019-06-27
EP3685411A1 (fr) 2020-07-29
CN111480209A (zh) 2020-07-31
WO2019121048A1 (fr) 2019-06-27
US11626242B2 (en) 2023-04-11
PL3685411T3 (pl) 2022-01-10
US20200350112A1 (en) 2020-11-05

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