EP0022269A1 - Conducteur de courant avec des conducteurs partiels transposés - Google Patents

Conducteur de courant avec des conducteurs partiels transposés Download PDF

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Publication number
EP0022269A1
EP0022269A1 EP80103837A EP80103837A EP0022269A1 EP 0022269 A1 EP0022269 A1 EP 0022269A1 EP 80103837 A EP80103837 A EP 80103837A EP 80103837 A EP80103837 A EP 80103837A EP 0022269 A1 EP0022269 A1 EP 0022269A1
Authority
EP
European Patent Office
Prior art keywords
current conductor
conductor
current
transitions
pipe sections
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Withdrawn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
EP80103837A
Other languages
German (de)
English (en)
Inventor
Paul Prof. Dr.-Ing. Weiss
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0022269A1 publication Critical patent/EP0022269A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/06—Single tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
    • H01B7/306—Transposed conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/58—Contacts spaced along longitudinal axis of engagement

Definitions

  • the invention relates to a current conductor for reducing the line loss due to current displacement in AC operation in parallel, side by side continuous and insulated from each other and alternately b e - guided conductor loom its opposite sides location interchanged is divided.
  • the proposed conductor is used in high-voltage technology and, in particular, in cables, in switchgear, as a connection between generators and transformers or as a busbar, where it is used to conduct alternating currents of 1000 amperes and more, and in high-frequency technology.
  • the basic task is to keep the electrical resistance of all current-carrying conductors as low as is economically justifiable, so that energy losses and heating are kept small.
  • the pure ohmic resistance of the entire conductor is for the transmission of a direct current cross-section is decisive, while with alternating current the cross-sectional area effective for the current supply is considerably reduced by the current displacement (the "skin effect"), so that with a solid conductor of circular cross-section only a small ring zone near the surface takes over the power line;
  • the conductor resistance effective in AC operation becomes considerably larger than that in operation with DC.
  • the object of the invention is to design a current conductor which is subdivided into partial conductors in order to reduce line losses as a result of current displacement and which has a cylindrical cross section for the purpose of opening up new fields of application in the case of radially symmetrical interchanging of its partial conductors.
  • a current conductor of the type described in the introduction is used and the object is achieved in that the partial conductors consist of coaxially arranged pipe sections of different widths, the ends of which are connected to one another by transitions.
  • the necessary interchanging takes place in that the innermost partial conductor is led outward at certain intervals by means of a transition and thereby becomes the outermost partial conductor, and at the same point the position of the other partial conductor is also changed by other transitions.
  • all the partial conductors have the same AC resistance after a few such exchanges and they carry the same partial current.
  • the result of this uniform current distribution is that the skin effect results in a current displacement in the individual partial conductor, but not in the overall cross section.
  • the generally usable cylindrical current conductor according to the invention has a particularly low effective resistance with alternating current.
  • the transitions can be either radial or conical.
  • each partial conductor consists of at least two identically designed ones and successively connected conductor elements made of at least two pipe sections of different widths which are connected to one another by means of recesses, which are arranged coaxially and are pushed into one another in such a way that the pipe sections of larger diameter are above those of smaller diameter and the free end of each pipe section with the smallest width is connected to the free start of the pipe section are connected to the largest width of the adjacent conductor element through the recesses connecting pieces.
  • Such a conductor can be manufactured relatively easily because it is composed of nothing but the same components.
  • the conical transitions are expediently designed as truncated cones bearing the recesses. This design allows a particularly compact, short design of the transitions.
  • Sleeves are advantageously used as connecting pieces and are clamped between the pipe sections by means of screw bolts passing through them.
  • transitions are separate components which carry pipe connections provided with connecting devices, to which the pipe sections can be attached on both sides.
  • a ventilation duct is provided in the interior of the conductor elements for the purpose of forced ventilation. If self-ventilation is preferred, the pipe sections have cross holes.
  • spacers made of insulating material are advantageously provided between the conductor elements. Such spacers hinder forced cooling of the partial conductors only very little.
  • a current conductor 1 according to the invention in its simplest embodiment - compare FIG. 1 - has two electrically connected partial conductors 2 and 2 ', which consist of coaxially arranged pipe sections 3, 3'.
  • the ends of these pipe sections 3, 3 ' which may have a circular, elliptical or even a polygonal cross section, are connected to one another at several points by transitions 4.
  • the partial conductors 2 and 2 ' are attached to a common connection plate 5 at their beginning and at their end.
  • the pipe sections 3,3 '...,. the transitions 4 and the connection plate 5 consist of a metal of high electrical conductivity, preferably of copper, aluminum or a suitable alloy.
  • the pipe sections 3,3 '... have different widths, for a current conductor 1 (FIG. 1) consisting of two partial conductors 2, 2', a number of pipe sections 3,3 'of two different widths are required.
  • Pipe sections 3, 3 'and 3 "with three different widths are required for a current conductor 1 consisting of three partial conductors 2, 2' and 2 '' (see FIG. 2), and pipe sections with four different ones are required for a current conductor 1 consisting of four partial conductors Widths required (Fig. 3) etc.
  • the current conductor 1 has interchanging points 6 at various periodic intervals, at which the ends of the pipe sections 3, 3 ', 3 "... are connected to one another" crosswise ", so to speak, by the transitions 4 1, each of the two subconductors 2 and 2 ', which run next to one another and are connected in parallel by the connecting plates 5, is led alternately once inwards and once outwards. With three subconductors 2, 2' and 2 " (FIG.
  • each current conductor 1 In the course of each current conductor 1, each becomes in this way three partial conductors 2, 2 ', 2 "over the total length of the current conductor 1, one third each inside, in the middle and outside, so that the current conductor 1 thus has an equivalent impedance in terms of amount and components between its two connection plates 5 in AC operation For this reason, the current flowing in it is evenly distributed over the three partial conductors 2.2 'and 2 ", so that the skin effect only to a current displacement within a single partial conductor 2.2' or 2", but not to a displacement in the entire cross section of the conductor 1 leads.
  • the disadvantageous effect of current displacement can be reduced even further by using four coaxial partial conductors 2.2 ', 2' 'and 2 "' (FIG. 3).
  • a further reduction in line losses is possible by increasing the number of parallel partial conductors, however, the technical effort increases progressively
  • the wall thickness of the partial conductors 2.2 '... is equal to the penetration depth of the alternating current according to the skin effect consist of two or more partial conductors constructed in accordance with FIGS. 1 or 2 or 3, main and secondary exchange points having to be provided for the cyclical exchange.
  • All sub-conductors 2,2 '... are electrically insulated from one another for a voltage of a few volts.
  • the partial conductors 2 also run past one another in an electrically separated manner at the transitions 4, which is why they must be designed in a special way - in the case of a radial or conical structure.
  • each of the three partial conductors 2, 2 'and 2 consists of a number of identically arranged conductor elements 7 - see FIG. 6.
  • Each of these conductor elements 7 consists of three pipe sections 3, 3 'and 3 "of different widths connected to one another by means of radially designed transitions.
  • four circular recesses 8 are arranged, in the area of the free start of the pipe section 3 ′′ with the largest width there are four holes 9 and in the area of the free end of the pipe section 3 with the smallest width the threaded holes 10.
  • the recesses 8, the holes 9 and the threaded holes 10 are each under central angles of 90 degrees.
  • the pipe section 3 with the smallest width is penetrated by a ventilation duct 11, all pipe sections 3, 3 'and 3''have an annular cross section.
  • each conductor element 7 (or the free end of each tube section 3 with the smallest width) is with the free start of each adjacent conductor element 7 (or the free start of each tube section 3 "with the largest width of the adjacent conductor element 7) Electrically connected with the aid of connecting pieces 12 which reach through the recesses 8.
  • These connectors 12 are sleeves 13, which are penetrated by bolts 14. The sleeves 13 are each clamped between the pipe sections 3 "with the largest width and the pipe sections 3 with the smallest width with the aid of the tightened screw bolts 14, so that they establish an electrical connection while they are electrically insulated from the recesses 8.
  • Mushroom-shaped spacers 15 made of an electrically non-conductive material are provided between the conductor elements 7.
  • the conductor elements 7 can also be provided with a firmly applied insulating layer covering the entire surface or essential parts thereof.
  • the partial conductors 2, 2 'and 2 are at their beginning and at the end with screws 16 from a well-conductive conductive metal existing connection plates 5 screwed, with the help of the parallel connection of the three sub-conductors 2,2 ', 2 "is effected.
  • the transition 4 shown in FIG. 7 for a current conductor 1 consisting of three partial conductors 2, 2 'and 2 " is a separate component on which the three coaxial, equally long pipe sections 3, 3' and 3" are connected on both sides by means of connecting devices 17 (in the form of External threads) can be attached.
  • This transition 4 consists of a total of six pipe sections 18 a - f with three different widths corresponding to the pipe sections 3, 3 ', 3 ".
  • the connection of the middle inlet pipe section 18 b to the inner outlet pipe section 18 d and that of the outer entrance -Tube piece 18 c with the middle outlet pipe piece 18 e happens through truncated cones 19, which carry recesses 8.
  • connection pieces 12 distributed uniformly over the circumference, consisting of a sleeve 13, through which a screw bolt 14 passes, provide the electrical connection between the inner inlet pipe section 18 a and the outer outlet pipe section 18 f.
  • the external threads on the ends of the pipe sections 18 a - f enable the pipe sections 3, 3 'and 3 "to be screwed on. Instead of these threads e.g. also plug connections with contact fingers.
  • the ventilation duct 11 is used for the forced cooling of the inner partial conductors with the aid of a gaseous or liquid cooling medium flowing through the current conductor 1 in the longitudinal direction.
  • An improvement in the heat dissipation of the inner partial conductors can also be achieved by transverse bores 20 (see FIGS. 4 and 6), which penetrate all partial conductors 2, 2 ', 2 "at certain points in such a way that they are perpendicular in the later installation position natural convection can develop.

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  • Installation Of Bus-Bars (AREA)
EP80103837A 1979-07-10 1980-07-05 Conducteur de courant avec des conducteurs partiels transposés Withdrawn EP0022269A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2927796 1979-07-10
DE19792927796 DE2927796C2 (de) 1979-07-10 1979-07-10 Stromleiter

Publications (1)

Publication Number Publication Date
EP0022269A1 true EP0022269A1 (fr) 1981-01-14

Family

ID=6075330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103837A Withdrawn EP0022269A1 (fr) 1979-07-10 1980-07-05 Conducteur de courant avec des conducteurs partiels transposés

Country Status (2)

Country Link
EP (1) EP0022269A1 (fr)
DE (1) DE2927796C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114141405A (zh) * 2021-11-03 2022-03-04 西安交通大学 消除集肤效应的电流通流结构
EP4044200A1 (fr) * 2021-02-16 2022-08-17 Hitachi Energy Switzerland AG Conducteur pour courant électrique, procédé de fabrication du conducteur et utilisation du conducteur pour conduire un courant électrique à composante ca

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246328C2 (de) * 1982-12-15 1985-01-17 Klaus-Werner Dipl.-Ing. 6730 Neustadt Iselborn Vertauschungsstelle für Stromleiter
KR101284075B1 (ko) * 2010-08-20 2013-07-10 가부시키가이샤후지쿠라 전선, 코일, 전선의 설계 장치 및 전기 모터
JP5301514B2 (ja) 2010-09-28 2013-09-25 株式会社神戸製鋼所 バスバー、バスバーの製造方法、及び、バスバーおよびコネクタ
DE102022201405A1 (de) 2022-02-10 2023-08-10 Leoni Bordnetz-Systeme Gmbh Stromschienen-Anordnung zur elektrischen Leistungsversorgung einer elektrischen Komponente sowie Kraftfahrzeug mit einer solchen Stromschienen-Anordnung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684993A (en) * 1949-07-19 1954-07-27 Gen Electric Parallel connected concentric conductor
US2812502A (en) * 1953-07-07 1957-11-05 Bell Telephone Labor Inc Transposed coaxial conductor system
US2930833A (en) * 1955-06-30 1960-03-29 Bell Telephone Labor Inc Electrical conductor having transposed conducting members

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190512880A (en) * 1905-06-22 1906-06-07 Anson Gardner Betts Improvements in Electric Conductors
JPS5913123B2 (ja) * 1973-03-05 1984-03-28 株式会社フジクラ 転位電線

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684993A (en) * 1949-07-19 1954-07-27 Gen Electric Parallel connected concentric conductor
US2812502A (en) * 1953-07-07 1957-11-05 Bell Telephone Labor Inc Transposed coaxial conductor system
US2930833A (en) * 1955-06-30 1960-03-29 Bell Telephone Labor Inc Electrical conductor having transposed conducting members

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4044200A1 (fr) * 2021-02-16 2022-08-17 Hitachi Energy Switzerland AG Conducteur pour courant électrique, procédé de fabrication du conducteur et utilisation du conducteur pour conduire un courant électrique à composante ca
WO2022175178A1 (fr) 2021-02-16 2022-08-25 Hitachi Energy Switzerland Ag Conducteur pour courant électrique, procédé de fabrication du conducteur et utilisation d'un conducteur pour conduire un courant électrique avec un composant en courant alternatif
CN114141405A (zh) * 2021-11-03 2022-03-04 西安交通大学 消除集肤效应的电流通流结构
CN114141405B (zh) * 2021-11-03 2023-03-10 西安交通大学 消除集肤效应的电流通流结构

Also Published As

Publication number Publication date
DE2927796B1 (de) 1980-11-06
DE2927796C2 (de) 1982-03-25

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