EP2141709A2 - Câble électrique sectoriel de type Milliken - Google Patents

Câble électrique sectoriel de type Milliken Download PDF

Info

Publication number
EP2141709A2
EP2141709A2 EP09008424A EP09008424A EP2141709A2 EP 2141709 A2 EP2141709 A2 EP 2141709A2 EP 09008424 A EP09008424 A EP 09008424A EP 09008424 A EP09008424 A EP 09008424A EP 2141709 A2 EP2141709 A2 EP 2141709A2
Authority
EP
European Patent Office
Prior art keywords
segment
individual conductors
layers
layer
elements
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Withdrawn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
EP09008424A
Other languages
German (de)
English (en)
Other versions
EP2141709A3 (fr
Inventor
Dag WILLÉN
Volker Dr. Waschk
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.)
NKT Cables GmbH and Co KG
Original Assignee
NKT Cables 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 NKT Cables GmbH and Co KG filed Critical NKT Cables GmbH and Co KG
Publication of EP2141709A2 publication Critical patent/EP2141709A2/fr
Publication of EP2141709A3 publication Critical patent/EP2141709A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01B7/303—Conductors comprising interwire insulation

Definitions

  • the invention relates to an electric sector conductor cable of the Millikentyp.
  • a parameter k S which lies between 0 and 1 as a dimensionless variable.
  • the line losses correspond to those of a conductor in direct current.
  • the conductor is divided into several, usually six, equal segments. These are insulated from each other, around a central channel, which is hollow or can be filled with plastic, stranded and pressed into a total round conductor. Each segment consists of several layers of individual conductors (wires), which are stranded around a segment core. First of all, you make a normal, multi-stranded, strand-stranded round conductor and then deform it into a segment.
  • the principle of operation of a conductor of the Millikentyp is that a wire within the lay length (Verseilly) of its location at a location of the conductor in the lower part of the segment appears and there induces a corresponding longitudinal stress, during Advances along the conductor due to its stranding also emerges in the upper part of the segment and there induces a longitudinal tension corresponding to this location. All of the longitudinal stresses induced when passing through the lay length add up so that overall a mean longitudinal stress is induced, which is the same for all wires of a layer, and which differs only slightly from the longitudinal stresses of the other layers of the same segment. The result is a homogenization of the current density within each segment, and thus a reduction of eddy current losses.
  • the contact resistances are increased by using insulated wires (eg, enameled or enamel-insulated copper wires).
  • the invention has for its object to provide a structure of a sector conductor cable of the Millikentyp, in which a further reduction of the transmission losses is achieved.
  • each segment consists of several layers of compacted, strand-shaped single conductors around the center of the high-voltage cable are stranded with different lay lengths.
  • Each segment consists of a core of several non-isolated single conductors. At least two layers of strand-shaped individual conductors are applied to the segment core. The resting on the segment core first layer is separated from the segment core by an insulating layer and the other resting (second and further) layers are also separated from each other by an insulating layer.
  • further non-conductive elements are present in addition to the individual conductors, so that there are at least two groups of individual conductors separated by the non-conductive elements.
  • the non-conductive elements isolate the individual conductors from each other in an insulating manner and that the number of non-conductive elements is as small as possible, but at least two non-conductive elements are present in one layer.
  • the entire cross sections of the nonconductive elements in one layer make up only a fraction of the cross section of the single conductors in one layer.
  • the nonconductive elements in one layer contact the insulating layers of the adjacent layer so that the extent (cross section) of a non-conductive element must be at least as large as to fill the thickness of the layer, but the adjacent single conductors at the shortest possible distance isolating from each other, so the extent (width) is very narrow.
  • the conductor cross section (cross section of the individual conductors) in one layer should be as large as possible.
  • the characteristic feature of the invention which was noted as essential, could be confirmed in detailed metrological investigations.
  • the loss parameter k S can be significantly reduced if only a few non-conductive, strand or rod-shaped elements are present in the respective layers, which isolate the non-insulated individual conductors from one another in an insulating manner.
  • the distances of the nonconductive elements may be regular (equidistant).
  • At least two strand-like, non-conductive elements are placed in a layer of a segment and are evenly spaced circumferentially in one layer, whereby the non-insulated individual conductors capable of being insulated are separated from each other in an insulating manner.
  • the fraction of the cross section of the nonconductive elements in a layer of the segment to the cross section of the single conductors in the same layer may be in a range between 5 and 10%.
  • fractions of the cross section of the non-conductive elements to the cross section of the individual conductors can be increasingly formed from an inner to the next-outer layer.
  • the non-conductive elements are preferably formed of rod or strand-like insulating material, for example of a rod or thread (fibers) made of plastic, which are stranded or stranded with the individual conductors.
  • the individual conductors can be formed from non-insulated round wires, in which case a plurality of, possibly the same diameter round wires in contact with each other and form a conductive group. Such groups are separated from each other by the aforementioned plastic rods or threads.
  • the individual conductors can also be formed from flat strip material. In one layer of a segment, for example, three (or four) flat individual conductors would be made of strip material, which are respectively separated from one another by three (or four) plastic elements.
  • the flat individual conductors made of strip material could, for example, be made of aluminum.
  • the band-shaped conductor elements can be formed as a flat band, which lie in their widthwise extension tangential to the circumference of a segment position. They can also be deformed in their position in the layers concave to the segment core, so that they lie approximately on the circumference of the associated layer.
  • the non-conductive elements (rods or filaments) and the insulating layer on the segment core and between the layers (as a film) should be made of a heat-resistant plastic (up to 200 ° C), for example, the film may be 250 microns thick and made of polyester.
  • Sektorleiterccis (hereinafter also referred to only briefly as 'Millikenleiter') is carried out so that first a conventional, Offdrähtiger, stranded stranded round conductor is made, this is deformed in a tool (by rolling or extrusion) to the segment and finally the uniform segments , usually 5 or 6, are stranded to Millikenleiter.
  • a segment with band-shaped conductor elements To produce a segment with band-shaped conductor elements, one can proceed as follows. It is first - as described - a segmented core manufactured and this wrapped with a temperature-resistant plastic film. This segment core is surrounded (in a first layer) with a plurality of band-shaped conductors (at least three), this intermediate being compacted in a tool (by rolling or extrusion). The intermediate spaces between the strip-shaped conductors are then filled with PE in a PE extrusion line. Subsequently, another plastic film is brought to the insulation above it and in repetition of the first step continues to apply a layer of band-shaped conductors. Finally, filling of the intermediate spaces takes place in an extrusion process.
  • a complete high-performance cable comprises several segments and has an outer cable sheath with a conventional structure, for example a polymer (PE, HDPE) sheath (older constructions made of oil-paper insulation). Underneath the cable sheath are (from outside to inside) a lead shield, a semiconducting layer of soot paper, a metallic (copper) shielding tape and the cable insulation on the Milliken conductor. Under the cable sheath can still be introduced a position of swelling paper or swellable nonwoven for longitudinal water seal. In the center or gusset of the cable can be introduced instead of a hollow channel plastic. It has been shown in the case of a cable with conductive material in the center that the loss parameter k S can also be reduced by placing the equivalent amount of the cross section of copper in the segments instead of in the center and filling the center with plastic.
  • PE polymer
  • HDPE high-performance cable
  • Fig. 1 shows a wedge-shaped segment 10 of a micro-electrical conductor, in which six segments 10 form the head of a high-performance cable.
  • the cable center 50 is located below, with reference numeral 52, the layer structure of the cable sheath is indicated.
  • a cavity may be formed or filled with insulating material.
  • the cable center may also be filled with conductor material.
  • Each segment consists of a segment core 11 and generally of several (in the figures two) layers of compacted strand-shaped individual conductors 30 made of copper, which surround the Center of the high performance cable are stranded with different lay lengths.
  • Each segment 10 is isolated from the adjacent segment (insulation 25 in FIG Fig. 2 ).
  • the layers 12, 14 are non-insulated individual conductors 30, which have been obtained by the deformation in the segment formation square cross-section.
  • the first layer 12 on the segment core is insulated from the segment core (insulating layer 16), as is the first isolated from the second layer 14 (insulating layer 16).
  • nonconductive elements 40 are present which individually each have a cross section which approximately corresponds to the cross section of a single conductor 30.
  • the non-conductive elements 40 may for example consist of rods or threads made of plastic.
  • three non-conductive elements 40 are present in the first layer and four in the second layer.
  • Fig. 2 In the Fig. 2 is the segment core 11 constructed as in Fig. 1 , On the segment core are also two layers 12,14, which are separated from each other and against the segment core with an insulating layer 16.
  • the single conductors 32 of the Fig. 2 are band-shaped conductor elements 32.
  • the thickness of a band-shaped conductor corresponds to the layer thickness of a layer.
  • the band-shaped conductors are in their widthwise extension in the outer region of the segment layers, which forms approximately a circular arc, deformed concave to the segment core 11. Adjacent segments 10 are separated from each other with an insulating layer 25. As in Fig.
  • each layer are three band-shaped conductors 32, which are separated by three insulating elements 42, wherein the insulating elements can be introduced in an extrusion process, which was previously mentioned as a possible manufacturing process.
  • the twisting of the segment alters the position of the elements in the layers as the length of the segment increases, so that the in Fig. 2 shown position is relatively random, where the insulating 42 lie in the corners.
  • a construction example of a Milliken conductor is given with 1800 mm 2 cross-section and constructed of 6 segments.
  • the conductor has a diameter of 53 mm.
  • the segment core consists of 18 wires each 2.58 mm thick; the 1st layer on the core consists of 17 wires of thickness 2.58 mm each with a lay length of 280 mm and 2 plastic threads or rods; or 16 wires and 3 plastic threads or rods; the second layer above it consists of 23 elements (21 wires + 2 insulating elements, or 20 wires or 3 insulating elements) with a thickness of 2.42 mm each with a lay length of 310 mm;

Landscapes

  • Insulated Conductors (AREA)
EP20090008424 2008-07-02 2009-06-27 Câble électrique sectoriel de type Milliken Withdrawn EP2141709A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810031337 DE102008031337B3 (de) 2008-07-02 2008-07-02 Elektrisches Sekorleiterlabel vom Millikentyp

Publications (2)

Publication Number Publication Date
EP2141709A2 true EP2141709A2 (fr) 2010-01-06
EP2141709A3 EP2141709A3 (fr) 2013-09-25

Family

ID=41210856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090008424 Withdrawn EP2141709A3 (fr) 2008-07-02 2009-06-27 Câble électrique sectoriel de type Milliken

Country Status (2)

Country Link
EP (1) EP2141709A3 (fr)
DE (1) DE102008031337B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3006099A1 (fr) * 2013-05-22 2014-11-28 Nexans Cable electrique comprenant au moins une couche electriquement isolante
CN109686505A (zh) * 2018-11-27 2019-04-26 广州岭南电缆股份有限公司 紧压分割导体的制备方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016004552A1 (de) * 2016-04-15 2017-10-19 Waskönig+Walter Kabel-Werk GmbH u. Co. KG Kabel, insbesondere Hochleistungs-Energiekabel
DE102016215252A1 (de) 2016-08-16 2018-02-22 Leoni Kabel Gmbh Kabel mit angepasster Verseilung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1904162A (en) * 1930-08-13 1933-04-18 Milliken Humphreys Electrical cable
US2187213A (en) * 1937-06-01 1940-01-16 Milliken Humphreys Electric power cable
US2972658A (en) * 1957-10-28 1961-02-21 Okonite Co Dynamically balanced alternating-current electric conductors
DE4036169A1 (de) * 1990-05-11 1991-11-14 Felten & Guilleaume Energie Elektrischer leiter vom millikentyp mit verringerten wirbelstromverlusten
GB9100317D0 (en) * 1991-01-08 1991-02-20 Holton Machinery Ltd Co-axial cable
FR2777383B1 (fr) * 1998-04-09 2000-05-12 Alsthom Cge Alcatel Conducteur multicouche a effet de peau reduit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3006099A1 (fr) * 2013-05-22 2014-11-28 Nexans Cable electrique comprenant au moins une couche electriquement isolante
EP2808874A1 (fr) * 2013-05-22 2014-12-03 Nexans Câble électrique comprenant au moins une couche électriquement isolante
US9466407B2 (en) 2013-05-22 2016-10-11 Nexans Electrical cable comprising at least one electrically insulating layer
CN109686505A (zh) * 2018-11-27 2019-04-26 广州岭南电缆股份有限公司 紧压分割导体的制备方法

Also Published As

Publication number Publication date
DE102008031337B3 (de) 2010-04-01
EP2141709A3 (fr) 2013-09-25

Similar Documents

Publication Publication Date Title
DE3779828T2 (de) Schraubenfoermig gewickelter flexibler schlauch.
DE69906052T2 (de) Abgeschirmtes kabel und sein herstellungsverfahren
EP2017856B1 (fr) Câble électrique résistant à une forte conduction
DE19549406C2 (de) Verfahren zur Herstellung eines Sektorleiters für elektrische Energiekabel
EP3147913B1 (fr) Cable de transmission de donnees pouvant etre confectionne
CH709972B1 (de) Elektrokabel.
DE102008031337B3 (de) Elektrisches Sekorleiterlabel vom Millikentyp
EP1490881B1 (fr) Cable a trois fils
EP3285266B1 (fr) Câble à toronnage adapté
DE69200777T2 (de) Mittels eines isolierenden Mantels isolierter Langkörper.
DE3226380C2 (de) Kabelgarnitur
DE2942925A1 (de) Feuchtigkeitsgeschuetztes elektrisches kabel
DE102009057421A1 (de) Konfektionierbares Datenkabel
EP3091619B1 (fr) Procede de raccordement de cables haute tension par des conducteurs multibrins
DE19620024A1 (de) Nachrichtenkabel sowie Verfahren zu dessen Herstellung
DE69710433T2 (de) Abgeschirmtes Kabel
EP0746860B1 (fr) Faisceau de conducteurs torsade pour enroulement de machines et appareils electriques
DE3439910C2 (fr)
EP1134749A1 (fr) Câble électrique
DE630974C (de) Hochfrequenzlitzenleiter
DE4036169A1 (de) Elektrischer leiter vom millikentyp mit verringerten wirbelstromverlusten
DE1252307B (de) Mit waermeelastischer Kunstharz-Isolierhuelse versehene Statorwicklung fuer elektrische Maschinen
DE19522628C2 (de) Verfahren zur Herstellung eines Sektorleiters für elektrische Energiekabel
DE678649C (de) Luftraumisoliertes konzentrisches Hochfrequenzkabel
DE68924915T2 (de) Nachrichtenkabel.

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

RIC1 Information provided on ipc code assigned before grant

Ipc: H01B 7/30 20060101AFI20130819BHEP

17P Request for examination filed

Effective date: 20140227

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

Owner name: NKT CABLES GMBH

17Q First examination report despatched

Effective date: 20140813

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

Owner name: NKT CABLES GMBH & CO. KG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20160628