EP0088934A1 - Enroulement constitué de bobines en disque à bobines simples ou doubles intercalées - Google Patents

Enroulement constitué de bobines en disque à bobines simples ou doubles intercalées Download PDF

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Publication number
EP0088934A1
EP0088934A1 EP83101958A EP83101958A EP0088934A1 EP 0088934 A1 EP0088934 A1 EP 0088934A1 EP 83101958 A EP83101958 A EP 83101958A EP 83101958 A EP83101958 A EP 83101958A EP 0088934 A1 EP0088934 A1 EP 0088934A1
Authority
EP
European Patent Office
Prior art keywords
winding
additional insulation
insulation
coils
turns
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.)
Ceased
Application number
EP83101958A
Other languages
German (de)
English (en)
Inventor
Gottfried Broszat
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.)
Transformatoren Union AG
Original Assignee
Transformatoren Union AG
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 Transformatoren Union AG filed Critical Transformatoren Union AG
Publication of EP0088934A1 publication Critical patent/EP0088934A1/fr
Ceased 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
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • 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 inter-wound coils with reinforced, insulated outer surface in the entrance area, in which at least two turns on the inner and outer edge are additionally insulated from one another in such a way that one edge is angularly encompassed by this additional insulation and that the winding capacity between turns with normal insulation is higher than between turns with additional insulation.
  • the field strength in the most highly stressed oil gussets between edge and neighboring turns is shifted away from the conductor by means of cladding with solid insulation, and thereby reaches the order of magnitude of the field strength at the reinforced insulated edges on the outer surface.
  • the form rings used here for example with a U or L-shaped cross section, represent a relatively high outlay which is justified only for very high stresses. This also applies if the shaped rings are made by additional covering of the winding conductors with insulating paper and surround the edge conductors on all sides.
  • the load on the edge insulation on the outer surface of the winding can be lower than the load from the voltage between adjacent turns, even in high-voltage windings without reinforced insulated outer surfaces.
  • the additional insulation a great security against longitudinal arcing as well as against the security achieved by the normal insulation of the conductor against breakdowns between adjacent turns.
  • the construction of the additional insulation from shaped rings is relatively more complex than in the case of windings with reinforced, insulated jacket surfaces.
  • the invention is therefore based on the object of specifying an arrangement and design of disc coils for high-voltage windings from disc coils in transformers with and without reinforced insulation of the winding outer surfaces, in which the security of the insulation against longitudinal flashovers across several disc coils is approximately equal to the safety of the winding and the coil insulation against breakthroughs, without requiring any significant additional effort.
  • this object is achieved for a disk coil winding according to the type mentioned at the outset in that the additional insulation is reduced to a spacer which is approximately rectangular in cross section, which lies radially between the turns to be additionally insulated and whose width in the axial direction is equal to the corresponding width of that covered with normal insulation Winding conductor is.
  • the sum of the radial dimensions of the additional insulations per disk coil is equal to the radial thickness of the normally insulated winding conductor or an integral multiple thereof.
  • the metal spacing of the radially adjacent turns produced by the additional insulation in the disk coils remote from the high-voltage input of the winding decreases in accordance with the decreasing impact loads.
  • the additional insulation consists of insulating strips or cooling channel strips or a combination of these forms, a graduated insulation being produced on which the field strengths in the oil at the coil edges and between the turns are approximately the same in the event of surge voltage stresses.
  • the design of the winding according to the invention is very advantageous because, by simplification, it ensures economical design and use of the additional insulation required in special cases.
  • interwoven disc coils are wound from two simultaneously and spatially parallel winding conductors, the windings 1 through n of which the load current flows through in the order of the digits entered.
  • Additional insulations 71 to 73 serve to avoid the critical of these pre-discharges and to improve the dielectric strength of the high-voltage winding constructed from disc coils, the radial strength of which decreases with increasing reference symbols. By arranging these additional insulations, the safety of the insulations between adjacent turns, between adjacent disc coils, and the voltage Strength harmonized and optimized between disc coils that are further apart.
  • FIG. 7 shows a further exemplary embodiment with disk-shaped additional insulations 74, in which the corners facing the outer surfaces of the disk coils are also insulated by angles 75 and in which the disk-shaped additional insulations 74 simultaneously have the function of shims.
  • the additional insulations 71 to 74 arranged radially between adjacent turns reduce in particular the field strength of the electric field in oil gussets formed by adjacent winding conductor edges and thereby ensure that oil is in these Use possible pre-discharges only at significantly higher voltage loads and, due to the unchanged normal insulation of the winding conductors, nevertheless enable the same to be cooled practically unchanged.
  • the number of turns is increased in disk coils, which require fewer additional insulations 71 to 73 due to their distance from the high-voltage input and whose radial dimensions are smaller than in disk coils with very strong additional insulation 71 to 73.
  • the effect of the invention is based on the knowledge that corresponding points, where there are prerequisites for longitudinal rollover, are not shown on any of the coils wound into one another, in particular in the exemplary embodiments according to FIGS. 1 to 5 Job.
  • the winding cross section shown in FIG. 6 is a circumferential location of the arrangement according to FIG. 5, not shown, but is otherwise identical to the winding cross section shown in FIG. 5.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulating Of Coils (AREA)
EP83101958A 1982-03-15 1983-02-28 Enroulement constitué de bobines en disque à bobines simples ou doubles intercalées Ceased EP0088934A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3209350 1982-03-15
DE19823209350 DE3209350A1 (de) 1982-03-15 1982-03-15 Scheibenspulenwicklung aus ineinandergewickelten einzel- oder doppelspulen

Publications (1)

Publication Number Publication Date
EP0088934A1 true EP0088934A1 (fr) 1983-09-21

Family

ID=6158279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101958A Ceased EP0088934A1 (fr) 1982-03-15 1983-02-28 Enroulement constitué de bobines en disque à bobines simples ou doubles intercalées

Country Status (5)

Country Link
US (1) US4486730A (fr)
EP (1) EP0088934A1 (fr)
JP (1) JPS58166709A (fr)
KR (1) KR840002574A (fr)
DE (1) DE3209350A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7719397B2 (en) * 2006-07-27 2010-05-18 Abb Technology Ag Disc wound transformer with improved cooling and impulse voltage distribution

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL103934C (fr) * 1900-01-01
DE1038644B (de) * 1955-11-22 1958-09-11 Bbc Brown Boveri & Cie Anordnung zur Verhuetung von Gleitfunken-Entladungen laengs der aus Scheibenspulen aufgebauten Hochspannungswicklung eines Transformators mit konzentrischen Wicklungen
US2862195A (en) * 1954-07-22 1958-11-25 Siemens Ag Cylindrical windings composed of pancake coils for transformers, reactors and similar apparatus
DE1168557B (de) * 1961-01-16 1964-04-23 Licentia Gmbh Aus scheibenfoermigen Spulen, insbesondere aus Doppelspulen aufgebaute Wicklung fuer Transformatoren oder Drosselspulen
US3246270A (en) * 1962-09-10 1966-04-12 Westinghouse Electric Corp Graded insulation for interleaved windings
DE1244945B (de) * 1963-10-18 1967-07-20 Licentia Gmbh Aus zu Doppelspulen fortlaufend geschalteten Scheibenspulen gleicher Windungszahl, zwischen denen radiale OElkanaele liegen, aufgebaute Wicklung fuer Transformatoren undDrosselspulen
FR1523215A (fr) * 1967-01-31 1968-05-03 Skoda Np Enroulement pour machine électromagnétique non rotative en particulier transformateur à haute tension ainsi que machine pourvue dudit enroulement
DE1413549A1 (de) * 1963-09-10 1969-01-09 Licentia Gmbh Hochspannungslagenwicklung mit Inneneingang fuer Transformatoren und Drosselspulen
US3621428A (en) * 1970-09-24 1971-11-16 Westinghouse Electric Corp Electrical windings and method of constructing same
US3715696A (en) * 1972-05-22 1973-02-06 Gen Electric Disc winding with integral load current carrying rib shielding

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069279B (fr) * 1959-11-19
US2905911A (en) * 1954-06-08 1959-09-22 Hitachi Ltd Static shielding of transformer windings
GB1001512A (en) * 1960-11-24 1965-08-18 English Electric Co Ltd Improvements in or relating to electric transformers
US3560902A (en) * 1967-06-14 1971-02-02 Hitachi Ltd Method of providing static shielding of transformer windings

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL103934C (fr) * 1900-01-01
US2862195A (en) * 1954-07-22 1958-11-25 Siemens Ag Cylindrical windings composed of pancake coils for transformers, reactors and similar apparatus
DE1038644B (de) * 1955-11-22 1958-09-11 Bbc Brown Boveri & Cie Anordnung zur Verhuetung von Gleitfunken-Entladungen laengs der aus Scheibenspulen aufgebauten Hochspannungswicklung eines Transformators mit konzentrischen Wicklungen
DE1168557B (de) * 1961-01-16 1964-04-23 Licentia Gmbh Aus scheibenfoermigen Spulen, insbesondere aus Doppelspulen aufgebaute Wicklung fuer Transformatoren oder Drosselspulen
US3246270A (en) * 1962-09-10 1966-04-12 Westinghouse Electric Corp Graded insulation for interleaved windings
DE1413549A1 (de) * 1963-09-10 1969-01-09 Licentia Gmbh Hochspannungslagenwicklung mit Inneneingang fuer Transformatoren und Drosselspulen
DE1244945B (de) * 1963-10-18 1967-07-20 Licentia Gmbh Aus zu Doppelspulen fortlaufend geschalteten Scheibenspulen gleicher Windungszahl, zwischen denen radiale OElkanaele liegen, aufgebaute Wicklung fuer Transformatoren undDrosselspulen
FR1523215A (fr) * 1967-01-31 1968-05-03 Skoda Np Enroulement pour machine électromagnétique non rotative en particulier transformateur à haute tension ainsi que machine pourvue dudit enroulement
US3621428A (en) * 1970-09-24 1971-11-16 Westinghouse Electric Corp Electrical windings and method of constructing same
US3715696A (en) * 1972-05-22 1973-02-06 Gen Electric Disc winding with integral load current carrying rib shielding

Also Published As

Publication number Publication date
JPS58166709A (ja) 1983-10-01
US4486730A (en) 1984-12-04
KR840002574A (ko) 1984-07-02
DE3209350A1 (de) 1983-09-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19831007

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TRANSFORMATOREN UNION AKTIENGESELLSCHAFT

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18R Application refused

Effective date: 19861102

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BROSZAT, GOTTFRIED