EP0848393A1 - Dispositif électrique statique - Google Patents

Dispositif électrique statique Download PDF

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Publication number
EP0848393A1
EP0848393A1 EP97810875A EP97810875A EP0848393A1 EP 0848393 A1 EP0848393 A1 EP 0848393A1 EP 97810875 A EP97810875 A EP 97810875A EP 97810875 A EP97810875 A EP 97810875A EP 0848393 A1 EP0848393 A1 EP 0848393A1
Authority
EP
European Patent Office
Prior art keywords
winding
radius
disk
disc
windings
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.)
Withdrawn
Application number
EP97810875A
Other languages
German (de)
English (en)
Inventor
Jean-François Ravot
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.)
ABB Asea Brown Boveri Ltd
ABB AB
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP0848393A1 publication Critical patent/EP0848393A1/fr
Withdrawn legal-status Critical Current

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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
    • H01F27/2871—Pancake coils
    • 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
    • H01F27/343—Preventing or reducing surge voltages; oscillations

Definitions

  • the invention relates to a static electrical device, in particular transformer, as described in the preamble of the first claim.
  • a transformer with these features is, for example, from DE-43 33 185 C2 known.
  • the electrostatic boundary field of windings in static electrical devices is generally three-dimensional (cylindrical spiral) and by the variable potential marked on the winding surface. So that the insulation distances between a winding and earthed components, such as an iron core or Eisenjoch, as well as to be minimized between adjacent windings, is one Homogenization of the electrostatic boundary field or a reduction in the edge field strength required. There was therefore no lack of proposals, measures to provide for targeted influencing of the peripheral field. The reduction The edge field strength of a winding arrangement has so far been among others achieved by rounding the winding edges. For that were special profiles used for the edge conductors, which are accordingly expensive and were therefore uneconomical.
  • electrodes were advanced on the edge course arranged the winding, these electrodes as so-called protective or shield rings were formed with the same winding input Potential.
  • protective or shield rings One application of such protective or shield rings is known from DE 32 43 595 C2. From GB 1 041 420 it is known to be electrostatic Arrange shields between adjacent windings. The stake such protective or shield rings is due to the material and in terms of cost assembly is also expensive.
  • DE 43 33 185 C2 proposes control or homogenization of the electrostatic boundary field, conductive inserts between adjacent windings and between earthed components and a winding in the area of the front Winding edges.
  • smaller insulation distances are used a transformer through the use of more expensive and therefore less economical Purchased materials for the lead inserts.
  • the object of the invention is, in the case of a static electrical device, in particular transformer, of the type mentioned a winding arrangement to create a homogenization with simple means of the electrostatic boundary field is possible, so that a significant reduction the insulation distances and thus the overall dimensions and the total weight is achieved.
  • Such a winding arrangement enables a reduction in the insulation distance between grounded components and windings and between neighboring ones Windings. As a result, smaller, more compact overall dimensions achieved with a correspondingly lower material expenditure and lower weight for Windings, insulation, the iron core and the iron yoke.
  • a preferred embodiment of the invention provides that the front Edge areas of the winding step-like in the manner of a pyramid outside decreasing radial winding width by means of three discs or Disc windings are limited, the winding and the discs or Disc windings have a common mean radius. Furthermore it is advantageous here if the undervoltage winding is the iron core surrounds and the high-voltage winding coaxially the undervoltage winding encased.
  • an embodiment of the invention is based on a winding arrangement shown in simplified form for a transformer.
  • Fig. 1 shows a winding arrangement in longitudinal section, in which an undervoltage winding 2 and a high-voltage winding 15 concentrically around one Iron core 1 are arranged. Only a section is shown. At such windings 2, 15 occur mainly in the front edge area 3, that is in the area of the windings 2, 15 facing an iron yoke 18 are to increase the strength of the electrostatic field. Here are the increases these so-called electrostatic fringe fields are particularly clear between front edge regions 3 of adjacent windings, that is between the undervoltage winding 2 and the high-voltage winding 15. So far, these electrostatic fringe fields have mainly been elaborate Isolation arrangements counteracted.
  • the present inventive solution is based on the electrostatic Edge fields by means of a special design of the front To control edge regions 3 of the windings 2, 15 in such a way that there are no field strength increases here of the electrostatic field are more noticeable.
  • the Homogenization of the field created in this way enables considerable Reduction of the insulation effort; especially on protective or shield rings or key inserts that are derived from the aforementioned documents of the prior art are known, can be completely dispensed with.
  • a first embodiment of the invention comprises the undervoltage winding 2, which is arranged concentrically around the iron core 1 with the high-voltage winding 15 is.
  • the undervoltage winding 2 has a core center 16 with one Spaced inner radius 4, and has between this inner radius 4 and one Outer radius 5 has a mean radius 6.
  • the cross section of the undervoltage winding 2 is thus limited between the outer radius 6 and the inner radius 4 to a winding width 7.
  • the disk winding 8 has between an outer radius 10 and an inner radius 9 a winding width 12 and their average radius 10 coincides with the average radius 6 of the undervoltage winding 2 together.
  • the winding width 12 of the disk winding 8 is smaller than the winding width 7 of the undervoltage winding 2, and that for Eisenjoch 18 arranged disc windings 8 adjacent disc windings 13, 14, each also have a smaller winding width than the disk winding adjacent to the undervoltage winding 2 towards the inside.
  • the arrangement of the disk windings 8, 13, 14 thus results in one pyramidal termination of the front edge regions 3 of the undervoltage winding 2nd
  • FIG. 2 shows a further embodiment, in which the disk windings 8, 13, 14 also to the Eisenjoch 18th have a smaller winding width in stages.
  • the inner radii fall, such as the inner radius 9 of the Disc winding 8, together with the inner radius 4 of the undervoltage winding 2, and the outer radii of the disk windings on the high-voltage winding 15 coincide with their outer radius.
  • the invention is not limited to the exemplary embodiments shown and described.
  • Another arrangement of the disk windings 8, 13, 14 is also conceivable, in which neither their inner radius nor their outer radius coincides with a geometric radius (inner radius, outer radius) of the associated undervoltage winding 2 or high-voltage winding 15.
  • the types of undervoltage winding 2 and high-voltage winding 15 itself remain unspecified by the invention. In this case, the winding types that are common in practice, such as cylinder windings or layer windings, can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP97810875A 1996-12-04 1997-11-18 Dispositif électrique statique Withdrawn EP0848393A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996150261 DE19650261A1 (de) 1996-12-04 1996-12-04 Statische elektrische Vorrichtung
DE19650261 1996-12-04

Publications (1)

Publication Number Publication Date
EP0848393A1 true EP0848393A1 (fr) 1998-06-17

Family

ID=7813606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810875A Withdrawn EP0848393A1 (fr) 1996-12-04 1997-11-18 Dispositif électrique statique

Country Status (4)

Country Link
EP (1) EP0848393A1 (fr)
BR (1) BR9706069A (fr)
CA (1) CA2216848A1 (fr)
DE (1) DE19650261A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4687156A1 (fr) * 2024-07-30 2026-02-04 Hitachi Energy Ltd Agencement d'enroulement, transformateur et procédé de fabrication d'un agencement d'enroulement d'un transformateur

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1713214A (en) * 1928-07-11 1929-05-14 Gen Electric Transformer
FR667334A (fr) * 1928-04-13 1929-10-15 Thomson Houston Comp Francaise Perfectionnements aux bobinages des transformateurs avec ou sans fer, des bobines deréaction avec ou sans fer et en général aux bobinages traversés par des courantsalternatifs
GB397312A (en) * 1931-10-06 1933-08-24 Westinghouse Electric & Mfg Co Improvements in or relating to electric transformers
DE950138C (de) * 1952-02-14 1956-10-04 Willem Smit U Co S Transformat Transformatorwicklung
US2829354A (en) * 1954-04-29 1958-04-01 Allis Chalmers Mfg Co Coil with end turn having increased insulation
CH377926A (de) * 1958-11-21 1964-05-31 Smit & Willem & Co Nv Transformatorwicklung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1060036B (de) * 1955-10-12 1959-06-25 Gen Electric Abgeschirmter Transformator oder Drosselspule
FR1377430A (fr) * 1963-09-19 1964-11-06 Materiel Electrique S W Le Autotransformateurs avec enroulements de réglage
DE3243595C2 (de) * 1982-11-25 1985-10-17 Smit Transformatoren B.V., Nijmegen Wicklungsanordnung für einen gasgekühlten Transformator
DE4333185C2 (de) * 1993-09-29 1996-06-13 Siemens Ag Wicklungsanordnung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR667334A (fr) * 1928-04-13 1929-10-15 Thomson Houston Comp Francaise Perfectionnements aux bobinages des transformateurs avec ou sans fer, des bobines deréaction avec ou sans fer et en général aux bobinages traversés par des courantsalternatifs
US1713214A (en) * 1928-07-11 1929-05-14 Gen Electric Transformer
GB397312A (en) * 1931-10-06 1933-08-24 Westinghouse Electric & Mfg Co Improvements in or relating to electric transformers
DE950138C (de) * 1952-02-14 1956-10-04 Willem Smit U Co S Transformat Transformatorwicklung
US2829354A (en) * 1954-04-29 1958-04-01 Allis Chalmers Mfg Co Coil with end turn having increased insulation
CH377926A (de) * 1958-11-21 1964-05-31 Smit & Willem & Co Nv Transformatorwicklung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4687156A1 (fr) * 2024-07-30 2026-02-04 Hitachi Energy Ltd Agencement d'enroulement, transformateur et procédé de fabrication d'un agencement d'enroulement d'un transformateur
WO2026027113A1 (fr) * 2024-07-30 2026-02-05 Hitachi Energy Ltd Agencement d'enroulement, transformateur et procédé de fabrication d'un agencement d'enroulement d'un transformateur

Also Published As

Publication number Publication date
BR9706069A (pt) 1999-03-02
DE19650261A1 (de) 1998-06-10
CA2216848A1 (fr) 1998-06-04

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