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EP1183696B1 - Enroulement haute tension a commande capacitive - Google Patents

Enroulement haute tension a commande capacitive Download PDF

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Publication number
EP1183696B1
EP1183696B1 EP00949084A EP00949084A EP1183696B1 EP 1183696 B1 EP1183696 B1 EP 1183696B1 EP 00949084 A EP00949084 A EP 00949084A EP 00949084 A EP00949084 A EP 00949084A EP 1183696 B1 EP1183696 B1 EP 1183696B1
Authority
EP
European Patent Office
Prior art keywords
conductor
voltage winding
control
control conductor
main
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
EP00949084A
Other languages
German (de)
English (en)
Other versions
EP1183696A1 (fr
Inventor
Anatoliy Bunin
Erwin Hager
Johann KÖHL
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 AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1183696A1 publication Critical patent/EP1183696A1/fr
Application granted granted Critical
Publication of EP1183696B1 publication Critical patent/EP1183696B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F27/34—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
    • H01F27/345—Preventing or reducing surge voltages; oscillations using auxiliary conductors
    • 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

Definitions

  • the surge voltage resistance of transformer windings for rated voltages from 220 kV is usually achieved in that the winding is composed exclusively of nested coils or in that in the input region of the winding with stepped longitudinal capacitances, the surge voltage is reduced so far that the remaining winding in normal double coil circuit, for example from Drilleitern, executable.
  • the invention relates to a capacitive controlled high-voltage winding of disc coils for transformers with high power ratings with a designed as a twisting ladder, the load current leading main conductor and with a spatially parallel control conductor.
  • Such a capacitively controlled high voltage winding is known from DE-OS 24 18 230.
  • the high voltage winding shown there has a plurality of axially superposed disc coils, which are continuously wound from a trained as a twist conductor main conductor. Spatially parallel to the main conductor, a control conductor is continuously wound over a winding section of at least four disc coils. The control conductor is separated in the middle of this winding section and its beginning and end are electrically connected to each other outside the winding. This connection produced by soldering is practically without problems, because the control conductor is solderable as a solid conductor without difficulty.
  • German Auslegeschrift 1 297 217 discloses a further winding arrangement which contains control conductors for the capacitive control of a solid main conductor.
  • This winding is composed of continuously wound double coils and the control conductors are designed to achieve graded longitudinal capacitances in the double coils of different lengths.
  • the main conductor of the double coils is formed of two electrically parallel connected and spatially parallel and thereby electrically isolated from each other solid conductors, between which the designed as a metal foil control conductor is wrapped.
  • the longitudinal capacitance and the impulse voltage distribution in the winding also depends on the winding density.
  • the winding density fluctuates undesirably with the quality of manufacture achieved in each case.
  • a twisted conductor for coils for transformers which consists of several parallel-guided and mutually insulated flat part conductors.
  • the positions of the partial conductors in the cross section of the twisting conductor are cyclically reversed, as seen by crimping, so that each partial conductor cyclically assumes every possible position in the cross section of the twisted conductor over the length of the twisted conductor.
  • a step winding for transformers which has a plurality of electrically connected in series partial windings.
  • Each of the partial windings is formed in each case from a single conductor, to which a respective control conductor is arranged spatially parallel.
  • the control conductors and the individual conductors are electrically isolated from each other.
  • a transformer with a winding of a load current leading main conductor which usually consists of a material having high conductivity.
  • the main conductor is at least over part of its length spatially parallel an additional conductor of a resistance material arranged.
  • the additional conductor serves to dampen vibrations.
  • a high-current conductor for the connection lines of windings is known, in addition to a screen conductor is guided spatially parallel.
  • the shielding conductor is galvanically connected to the current-carrying conductor via so-called “potential connections", so that the sum current in the shielding conductor is equal to zero.
  • the shielding conductor serves to shield the magnetic field of the current conducted in the high-current conductor, so that construction parts exposed to its magnetic field are not subjected to thermal loading inadmissibly by eddy currents induced in them.
  • the invention has for its object for high-voltage windings of the former type to create a control conductor arrangement, which has a greater longitudinal capacity and also a comparatively simple and safe production and ensures high reliability of the high voltage winding during their use in a transformer.
  • Longitudinal capacity is understood to be the unit of electrical capacity per unit of length between the main winding conductors and the control conductor.
  • control conductor is arranged spatially within the main conductor, and the control conductor is upright between the two stacks of the sub-conductor of the main conductor.
  • control conductor is located within the main conductor designed as a twisting conductor, it is spatially very close to all sub-conductors from which a twisted conductor is usually formed, so that a large longitudinal capacity is given.
  • longitudinal capacity of this high voltage winding is independent of any existing axial cooling channels.
  • a high-voltage winding is particularly easy to produce with such a main conductor, because the main conductor and the control conductor can be wound simultaneously.
  • high reliability is given by the fact that the control conductor is located within the main conductor, that is shielded by the main conductor to the outside. The maximum voltage stress of the control conductor between two axially adjacent coils is due to this shield always equal to only twice the voltage applied across a pulley.
  • control conductor is arranged spatially between two stacks of flat superposed together forming the main conductors individual conductors and stands edgewise between the two stacks of the individual conductors of the main conductor.
  • the control conductor arranged in this way abuts against the corresponding side surfaces of the stacks.
  • control conductor forms in cross section a rectangle with a length to width ratio of about 15: 1 and the overall cross section of the main conductor with the control conductor enclosed is approximately square.
  • control conductor of several spatially parallel, against each other electrically insulated single conductors is formed. This results in low eddy current losses in the control conductor.
  • control conductor extends over a portion of the disk coil and that in the main conductor in the remaining part of the disk coil, a filling of insulating material is provided.
  • the number of turns provided with a control conductor within a disk coil decreases with increasing distance of the disk coil from the connection of the high-voltage winding.
  • the longitudinal capacitance decreases from the terminal into the high-voltage winding, and a distribution of a voltage surge occurring at the terminal to a high number of turns in the high-voltage winding is achieved.
  • an intermediate layer is arranged between the two stacks of sub-conductors forming the main conductor in control-disk-free coils, whose cross-section corresponds to the control conductor including its insulation.
  • a terminal lug of the control conductor is led out in each case from the outermost turn of a control conductor having a disc coil and the terminal lugs of adjacent disc coils whose radially inner main conductor windings are connected by a coil connection, coupled via a control conductor connection to each other galvanically.
  • High-voltage windings designed according to the invention are very advantageous because their longitudinal capacitance is significantly greater as a result of the spatially extremely close coupling of the control conductor to the main conductor than in all of the abovementioned known embodiments. In this case, the required production cost compared to the known solutions is rather lower than higher. In general, the high-voltage winding after its completion by a jig, which exerts an axial clamping force on the winding, held together.
  • a high-voltage winding 1 of a transformer with a high nominal power, for example more than 200 MWA and a rated voltage of 220 kV or more, which is directed along an axis 16, has terminals 2 and 3, the terminal 2 forming the high-voltage terminal (see FIG. 1).
  • the high-voltage winding 1 is composed of disk coils 4A to 4L (see FIG. 2).
  • the disk coils 4A to 4L are wound from a main conductor 5 having a preferably approximately square cross-section, wherein the main conductor 5 in the disk coils 4A, 4C, 4E, 4G, 4I and 4K respectively from outside to inside and in the disk coils 4B, 4D, 4F, 4H, 4J and 4L is wound from inside to outside.
  • the disk coils 4A to 4L are electrically connected in series via coil connections 6 located inside the high-voltage winding 1 and via coil connections 7 located on the outer circumference of the high-voltage winding 1 (see FIG. 2).
  • the disk coils 4A to 4L may also be in pairs (4a, 4b); (4C, 4D); (4E, 4F); (4G, 4H); (4I, 4J) and (4K, 4L) are each combined in a double coil, and each double coil can be wound from one main conductor.
  • the main conductor 5 (see FIG. 3) consists of two mutually parallel stacks 16 and 17 of sub-conductors 8 which adjoin one another with their broad sides and which are isolated from each other but nevertheless electrically connected in parallel.
  • the main conductor 5 is guided by entanglements 9, of which only one is shown, alternately one of the sub-conductor 8 from one stack 16 to the other stack 17 and one of the sub-conductor 8 from the other stack 17 to a stack 16 out.
  • This exchange takes place cyclically along the main conductor 5, so that each sub-conductor 8 occupies every possible sub-conductor position per longitudinal section of the main conductor 5. This is one so-called Drilleiter formed, which is also called Roebelstab in Stromgeneratorenbau.
  • the control conductor 10 has an approximately rectangular cross-section, wherein the rectangle has a length / width ratio of about 15: 1.
  • the control conductor 10 may be designed as an insulated solid conductor, in particular as a flat conductor, or similar to the main conductor 5 of a plurality of radially superimposed, insulated against each other individual conductors 15 (see Figure 4).
  • the individual conductors 15 are electrically connected in parallel.
  • the control conductor 10 stands upright between the two stacks of the individual conductors 8. This creates a close spatial arrangement of the individual conductors 8, in particular with respect to the control conductor 10.
  • the parallel and spatially closely spaced individual conductors 8 on the one hand and the control conductor 10 on the other hand form due to their small spatial distance from each other a capacitor with a relatively high capacity.
  • a respective control conductor 10A or 10B in the first and second disk coil 4A or 4B extends over all five windings, one control conductor 10C or 10D in each of the third and fourth disk coil 4C or 4D three windings, one control conductor 10E or 10F in the fifth and sixth disk coil 4E or 4F for 2 turns and one control conductor 10G to 10J in the seventh to tenth disk coil 4G to 4J via one turn.
  • the then in the high-voltage winding 1 following disc coils 4K and 4L are tax-free and padded only with the liner 12.
  • the fillings 11C to 11J are provided instead of a control conductor.
  • control conductors 10A-10J are in each case brought out of their respective disk coil 4A-4J via a connection lug 13A-13J, not shown in more detail, and can be electrically contacted.
  • the terminal lugs 13A to 13J of the disk coils 4A to 4J which are directly connected to each other via a coil connection 6, so the disk coils (4A, 4B); 4C, 4D); (4E, 4F); (4G, 4H) and (4I, 4J) are outside of the high-voltage winding 1 by a respective control conductor connection 14A to 14E galvanically connected to each other.
  • the control conductors 10A and 10B or 10C and 10D or 10E and 10F or 10G and 10H or 10I and 10J are electrically connected in series.
  • the longitudinal capacitances of the disk coils 4A to 4 J are correspondingly different.
  • the respective longitudinal capacity of the disk coils 4A and 4B is highest and the respective longitudinal capacity of the disk coils 4B to 4J is lowest.
  • the longitudinal capacity decreases.
  • high-frequency surges with which the terminal 2 is applied, so introduced into the high-voltage winding 1, that the voltage drop is distributed over many turns. Due to the decreasing longitudinal capacitance, an approximately uniform distribution of an impulsive surge on the high-voltage winding 1 is ideally enforced, depending on the frequency of the voltage surge.
  • the disk coils 4A - 4L which are not shown in detail, lying in the high-voltage winding 1 below the section A according to FIG. 1, can be designed with a main conductor designed as a twisted conductor without a control conductor and without filling or intermediate layer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Thermistors And Varistors (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Dc-Dc Converters (AREA)

Claims (9)

  1. Enroulement de haute tension à commande capacitive constitué de galettes (4), notamment pour des transformateurs à grande puissance nominale, comprenant un conducteur (5) principal réalisé en trifils pour le courant de charge qui est formé de piles (16, 17) disposées l'une à côté de l'autre de sous-conducteurs (8) à plat les uns sur les autres et un conducteur (10) de commande qui est séparé galvaniquement du conducteur (5) principal, qui lui est parallèle dans l'espace et qui est constitué en conducteur plat, caractérisé en ce que le conducteur (10) de commande est disposé dans l'espace à l'intérieur du conducteur (5) principal entre les deux piles (16, 17) et le conducteur (10) de commande est sur champ entre les deux piles (16, 17) des sous-conducteurs (8) du conducteur (5) principal.
  2. Enroulement de haute tension suivant la revendication 1,
    caractérisé en ce que le conducteur (10) de commande forme en section transversale un rectangle ayant un rapport de la longueur à la largeur d'environ 15:1.
  3. Enroulement de haute tension suivant l'une des revendications 1 ou 2,
    caractérisé en ce que le conducteur (10) de commande est formé de plusieurs conducteurs (15) individuels isolés électriquement les uns par rapport aux autres et s'étendant parallèlement dans l'espace.
  4. Enroulement de haute tension suivant l'une des revendications 1 à 3,
    caractérisé en ce que la section transversale globale du conducteur (5) principal enfermant le conducteur (10) de commande est à peu près carrée.
  5. Enroulement de haute tension suivant l'une des revendications 1 à 4,
    caractérisé en ce que le conducteur (10A) de commande s'étend sur une partie de la galette (4A) et en ce qu'il est prévu dans le conducteur (5) principal dans la partie restante de la galette (4A) un remplissage (11) en matière isolante.
  6. Enroulement de haute tension suivant la revendication 5,
    caractérisé en ce que le nombre des spires munies d'un conducteur (10A à 10J) de commande au sein d'une galette (4A à 4J) diminue au fur et à mesure qu'augmente la distance entre la galette (4A à 4J) et la borne (2) de l'enroulement (1) de haute tension.
  7. Enroulement de haute tension suivant l'une des revendications 1 à 6,
    caractérisé en ce qu'il est monté entre les deux piles (16, 17) des sous-conducteurs (8) formant le conducteur (5) principal dans des tranches (4K, 4L) n'ayant pas de conducteur de commande, une couche (12) intermédiaire, dont la section transversale correspond à celle du conducteur (10) de commande, y compris son isolant.
  8. Enroulement de haute tension suivant l'une des revendications 1 à 7,
    caractérisé en ce qu'un talon (13A) de connexion du conducteur (10A) de commande sort de la spire la plus extérieure d'une galette (4A) ayant un conducteur (10A) de commande.
  9. Enroulement de haute tension suivant l'une des revendications 1 à 8, caractérisé en ce que les talons (13A, 13B) de connexion de galettes (4A, 4B) voisines, dont les spires de conducteur principal se trouvant radialement vers l'intérieur sont reliées par une liaison (6) de galettes, sont, respectivement, couplées entre elles galvaniquement par une liaison (14A) de ligne de commande.
EP00949084A 1999-06-10 2000-06-09 Enroulement haute tension a commande capacitive Expired - Lifetime EP1183696B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19926540A DE19926540C1 (de) 1999-06-10 1999-06-10 Kapazitiv gesteuerte Hochspannungswicklung
DE19926540 1999-06-10
PCT/DE2000/001920 WO2000077800A1 (fr) 1999-06-10 2000-06-09 Enroulement haute tension a commande capacitive

Publications (2)

Publication Number Publication Date
EP1183696A1 EP1183696A1 (fr) 2002-03-06
EP1183696B1 true EP1183696B1 (fr) 2007-01-03

Family

ID=7910840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00949084A Expired - Lifetime EP1183696B1 (fr) 1999-06-10 2000-06-09 Enroulement haute tension a commande capacitive

Country Status (7)

Country Link
EP (1) EP1183696B1 (fr)
CN (1) CN1165057C (fr)
AT (1) ATE350756T1 (fr)
BR (1) BR0011458B1 (fr)
DE (2) DE19926540C1 (fr)
PT (1) PT1183696E (fr)
WO (1) WO2000077800A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004013416A1 (de) * 2004-03-18 2005-10-06 Nexans Hauptleiter für eine kapazitiv gesteuerte Hochspannungswicklung
EP2045898A1 (fr) * 2007-10-04 2009-04-08 Essex Europe SAS Conducteur trifilaire électrique
CN106205839A (zh) * 2016-08-31 2016-12-07 株洲市科达电机技术有限公司 高频导线及其制作方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1001512A (en) * 1960-11-24 1965-08-18 English Electric Co Ltd Improvements in or relating to electric transformers
GB1158325A (en) * 1965-11-09 1969-07-16 English Electric Co Ltd Improvements in or relating to Windings for Inductive Apparatus.
DE1943724A1 (de) * 1969-01-20 1970-07-30 Transform Roentgen Matern Veb Drilleiter
DE2323304C3 (de) * 1973-05-09 1978-09-07 Transformatoren Union Ag, 7000 Stuttgart Stufenwicklung für Transformatoren
DE2418230C3 (de) * 1974-04-13 1979-09-13 Transformatoren Union Ag, 7000 Stuttgart Kapazitiv gesteuerte Hochspannungswicklung aus Scheibenspulen für Transformatoren mit großen Leistungen
US4489298A (en) * 1982-03-04 1984-12-18 Westinghouse Electric Corp. Insulating structure for magnetic coils
DE3629310A1 (de) * 1986-08-28 1988-03-10 Transformatoren Union Ag Hochstromleiter fuer sondertransformatoren
DE3907287A1 (de) * 1989-03-07 1990-09-13 Siemens Ag Transformator mit wicklungen aus haupt- und zusatzleitern
BR9107321A (pt) * 1991-09-26 1995-10-17 Siemens Ag Processo para a fabricação de uma disposição de enrolamentos de uma bonbina

Also Published As

Publication number Publication date
ATE350756T1 (de) 2007-01-15
BR0011458B1 (pt) 2014-12-16
BR0011458A (pt) 2002-03-19
EP1183696A1 (fr) 2002-03-06
CN1165057C (zh) 2004-09-01
PT1183696E (pt) 2007-02-28
WO2000077800A1 (fr) 2000-12-21
DE50013938D1 (de) 2007-02-15
DE19926540C1 (de) 2001-01-11
CN1354883A (zh) 2002-06-19

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