EP2639797B1 - Elektrisches Übertragungskabel, insbesondere für Freileitung - Google Patents

Elektrisches Übertragungskabel, insbesondere für Freileitung Download PDF

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Publication number
EP2639797B1
EP2639797B1 EP12176539.0A EP12176539A EP2639797B1 EP 2639797 B1 EP2639797 B1 EP 2639797B1 EP 12176539 A EP12176539 A EP 12176539A EP 2639797 B1 EP2639797 B1 EP 2639797B1
Authority
EP
European Patent Office
Prior art keywords
cable
rod
wires
cable according
longitudinal axis
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.)
Not-in-force
Application number
EP12176539.0A
Other languages
English (en)
French (fr)
Other versions
EP2639797A1 (de
Inventor
Daniel Guery
Michel Martin
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.)
Nexans SA
Original Assignee
Nexans SA
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 Nexans SA filed Critical Nexans SA
Priority to CA2864764A priority Critical patent/CA2864764A1/fr
Priority to AU2013231579A priority patent/AU2013231579B2/en
Priority to PCT/EP2013/054011 priority patent/WO2013135489A1/fr
Priority to US14/381,341 priority patent/US9583233B2/en
Publication of EP2639797A1 publication Critical patent/EP2639797A1/de
Application granted granted Critical
Publication of EP2639797B1 publication Critical patent/EP2639797B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01B7/0009—Details relating to the conductive cores
    • 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
    • H01B5/08—Several wires or the like stranded in the form of a rope
    • H01B5/10—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material
    • H01B5/102—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core
    • H01B5/105—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core composed of synthetic filaments, e.g. glass-fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/008—Power cables for overhead application

Definitions

  • the invention relates to an electric transport cable, in particular for overhead lines.
  • an electric transport cable in particular for an overhead electrical line, comprising at least one central composite rod consisting of fibers impregnated with a matrix and whose specific stress at break is greater than 0.4 MPa.m 3 / kg. and at least one layer of interlocking conductive wires, aluminum or aluminum alloy and wound around this rod.
  • This electric transport cable in particular for the overhead electrical line, comprises a central composite rod consisting of fibers impregnated with an epoxy resin matrix and two layers of Z and S section wires, of aluminum or of aluminum alloy, wrapped around the ring.
  • the ring may be covered with a layer of insulating material.
  • Such conductive wires are shaped wires according to the IEC 62219 standard.
  • Such a cable may comprise a single central ring, as shown, or three central rods.
  • It may also comprise one or more layers of conductive wires 3.
  • the operating temperature of such a cable can reach 200 ° C or higher. It turns out, all the components of the cable being blocked at the ends by anchors, that, during an increase in the temperature of the conductive wires, from the ambient temperature to the operating temperature of the cable, the layers of lead wires tend to swell due to the difference in coefficient of expansion of the rod and conductive son, and conductive son tend to come out of their layer which can cause a loosening of the son out of their layer.
  • an electric transport cable in particular for an overhead electrical line, comprising at least one central composite rod consisting of fibers impregnated with a matrix and whose specific stress at break is greater than 0.4 MPa. .m 3 / kg and at least one layer of interconnecting, aluminum or aluminum alloy conductive wires wound around this ring, said cable having an outside diameter at ambient temperature, said initial diameter, and the ratio between the coefficient of thermal expansion of the conductive son and that of the central ring is greater than three, characterized in that said interconnected conductive son (3) are of a geometry such that the increase of the outer diameter of a length of this lower cable at 45 m, when the temperature increases for two to four minutes, from room temperature to between 150 and 240 ° C is less than or equal to 10% of its initial diameter, said cable being subjected to a mechanical tension of between 10 to 30% of the nominal breaking strength of the cable.
  • This cable comprises at least one layer of conductive wires to mutual nesting. More specifically, it may comprise one or more layers of mutually interleaved conductive wires, associated or not with at least one layer of conductive wires of round or trapezoidal section.
  • This cable comprises at least one central composite rod consisting of fibers, for example glass, carbon, alumina or ceramic fibers, impregnated with a matrix which may be made of polymer, for example epoxy resin, or metal, for example aluminum, steel, titanium or tungsten.
  • a matrix which may be made of polymer, for example epoxy resin, or metal, for example aluminum, steel, titanium or tungsten.
  • the specific stress at break is the breaking stress related to the density of the material or materials.
  • the outer diameter of the cable after a subsequent decrease of its temperature at ambient temperature is substantially equal to its initial diameter.
  • the variation of the temperature is carried out by applying or cutting off a current intensity.
  • each said mutually interleaved conductive wire comprises a so-called upper face and a so-called lower face arranged on a circular geometric cylinder having the longitudinal axis of the longitudinal axis of the cable and for radius R s and R i , is according to the invention such that the width of each said conductive wire at the intersection of a circular geometric cylinder of the same longitudinal axis and radius 1 ⁇ 2 (R s + R i ) is between 80 and 120% of the difference (R s - R i ).
  • said width of each said conductive wire is substantially equal to the difference (R s - R i ).
  • Said conductive wire may be of Z, S or C section.
  • said rod fibers are made of carbon and said epoxy resin matrix.
  • the conductive son are based on aluminum alloy and zirconium.
  • the ring may comprise a waterproof coating as described in the patent application WO 2010/089500 .
  • a dielectric layer may optionally be disposed between this coating and the composite rod.
  • the figure 1 is a sectional view of a cable according to the invention.
  • FIGS. 2 to 4 are cross-sectional views of a conductive wire according to several embodiments of the invention.
  • the invention relates to an electric transport cable, in particular for an overhead electrical line, comprising at least one central composite rod 1 consisting of fibers impregnated with a matrix and whose specific stress at break is greater than 0.4 MPa.m 3 / kg and at least one layer of conductive son 3 interlocking, aluminum or aluminum alloy and wound around this ring 1.
  • the rod 1 may comprise a tight coating 2.
  • the conductive son are based on aluminum alloy and zirconium.
  • This cable has an outer diameter at ambient temperature called initial diameter and the ratio between the coefficient of thermal expansion of the conductive son and that of the central rod is greater than three.
  • the mutually interleaved conductive wires (3) are of a geometry such that the increase in the external diameter of a length of this cable less than 45 m, during an increase in temperature during two to four months. four minutes, the ambient temperature at a temperature between 150 and 240 ° C is less than or equal to 10% of its initial diameter, said cable being subjected to a mechanical tension of between 10 to 30% of the nominal breaking strength cable.
  • its outer diameter after a subsequent decrease in temperature at room temperature is substantially equal to its initial diameter.
  • the figure 2 represents a Z conductor wire.
  • This conductive wire 3A comprises a so-called upper face 3B and a so-called lower face 3C each disposed on a circular geometric cylinder having the longitudinal axis AA of the cable and for radius R s and is such that the width L of this wire conductor at the intersection of a circular geometric cylinder C of the same longitudinal axis AA and radius 1 ⁇ 2 (R s + R i ) is between 80 and 120% of the difference (R s - R i ).
  • this width L of each conductive wire is substantially equal to the difference (R s - R i ).
  • the cable is Z-section, but it can be generally mutual nesting, for example S or C.
  • the figure 3 represents a S-shaped interlocking thread and the figure 4 represents a thread with mutual interlocking in C.
  • These conductor wires 3A comprise a so-called upper face 3B and a lower face 3C each disposed on a circular geometric cylinder having the longitudinal axis AA of the cable and for radius R s and R i , and are such that the width L of these conductive wires at the intersection of a circular geometric cylinder C of the same longitudinal axis AA and radius 1 ⁇ 2 (R s + R i ) is between 80 and 120% of the difference (R s - R i ).
  • this width L of these conductive wires is substantially equal to the difference (R s - R i ).
  • a cable length of less than 45m, and preferably between 10 and 45m, is used and is provided at its ends with a conventional epoxy resin sleeve to ensure that the layers retain substantially the same relative position as the obtained at the output of manufacture and more particularly without dismantling thereof.
  • the conductive wires of the layers are flared in the epoxy resin sleeves and the layers are reconstituted at the outlet of the sleeves to allow connection to an ac electrical power unit via conventional connectors.
  • the epoxy resin sleeves are introduced into conical aluminum bushes connected to tensioners to maintain a mechanical tension.
  • a load cell is placed between the cable and the anchoring device and, on the other side of the cable, the latter is directly connected to the other anchoring device.
  • the anchors are strong enough to minimize deflections of the ends of the device when mechanical tension is applied.
  • the mechanical stress applied at ambient temperature has a value between 10 and 30% of the rated breaking strength of the cable.
  • the temperature is measured at three locations along the length of the cable under test, preferably at 1 ⁇ 4, 1 ⁇ 2 and 3 ⁇ 4 the distance between ends, using thermocouples. At each location, the thermocouples are arranged in three different radial positions on the cable, namely on the outer layer of conductive wires, on the inner layer of conductive wires and in contact with the central ring.
  • the outer diameter of the cable is measured in the middle of the cable length under test initially in the initial state at room temperature.
  • the intensity of the current then applied to the cable is such that the conductive wire layers reach a temperature of between 150 ° C. and 240 ° C. in a time of between two and four minutes.
  • the reference temperature taken into account is the highest given by the thermocouples.
  • the increase in the external diameter just after the power failure is less than or equal to 10% of its initial external diameter and the external diameter after thermal stress and return to ambient temperature is substantially equal to its initial diameter.
  • This test method was performed with a cable as specified below at a temperature of 240 ° C.
  • This electric transport cable in particular for an overhead power line, is as shown in FIG. figure 1 and comprises a central composite bead consisting of continuous carbon fibers impregnated with an epoxy resin matrix, and two layers of mutually interlocking conductive wires, including an outer layer with Z-shaped wires and an inner layer with S-wires. as specified above, made of alloy of aluminum alloy and zirconium, wound helically around this rod so as to interlock each other.
  • the conducting wires are wires as described above with reference to the Figures 2 and 3 .
  • This cable is defined by the following characteristics: Conductive wires Central ring Rated section 341 mm 2 38.5 mm 2 Weight 947 kg / km 63 kg / km Elasticity module 57 kN / mm 2 170 kN / mm 2 Coefficient of thermal expansion 23.10 -6 / ° C 0.2.10 -6 / ° C

Landscapes

  • Non-Insulated Conductors (AREA)
  • Ropes Or Cables (AREA)
  • Insulated Conductors (AREA)

Claims (6)

  1. Elektrisches Übertragungskabel, insbesondere für Stromfreileitung, aufweisend mindestens einen zentralen Kompositstrang (1), gebildet von mit einer Matrix imprägnierten Fasern und dessen spezifische Bruchfestigkeit über 0,4 MPa.m3/kg beträgt, und mindestens eine Schicht von ineinander verschlungenen Leitungsdrähten (3) aus Aluminium oder aus Aluminiumlegierung und gewickelt um diesen Strang (1), wobei das Verhältnis zwischen dem thermischen Ausdehnungskoeffizienten der Leitungsdrähte (3) und dem des zentralen Strangs (1) größer als drei ist, wobei jeder ineinander verschlungene Leitungsdraht (3A) eine Oberseite (3B) und eine Unterseite (3C) aufweist, die auf einem runden geometrischen Zylinder angeordnet sind, der als Längsachse die Längsachse (A-A) des Kabels und als Radius Rs und Ri hat, dadurch gekennzeichnet, dass die Breite (L) jedes Leitungsdrahts am Schnittpunkt eines runden geometrischen Zylinders mit derselben Längsachse (A-A) und mit dem Radius ½ (Rs + Ri) zwischen 80 und 120 % der Differenz (Rs - Ri) inklusive beträgt.
  2. Kabel nach vorangehendem Anspruch, dadurch gekennzeichnet, dass die Breite (L) jedes Leitungsdrahts etwa der Differenz (Rs - Ri) entspricht.
  3. Kabel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Leitungsdraht (3A) einen Querschnitt als Z, S oder C hat.
  4. Kabel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Fasern des Strangs (1) aus Karbon sind und die Matrix aus Epoxyharz ist.
  5. Kabel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Leitungsdrähte (3A) auf der Basis von Legierung von Aluminium und von Zirkonium sind.
  6. Kabel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Strang (1) eine dichte Beschichtung (2) aufweist.
EP12176539.0A 2012-03-12 2012-07-16 Elektrisches Übertragungskabel, insbesondere für Freileitung Not-in-force EP2639797B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2864764A CA2864764A1 (fr) 2012-03-12 2013-02-28 Cable de transport electrique en particulier pour ligne aerienne
AU2013231579A AU2013231579B2 (en) 2012-03-12 2013-02-28 Electric power transmission cable particularly for an overhead line
PCT/EP2013/054011 WO2013135489A1 (fr) 2012-03-12 2013-02-28 Cable de transport electrique en particulier pour ligne aerienne
US14/381,341 US9583233B2 (en) 2012-03-12 2013-02-28 Electric power transmission cable particularly for an overhead line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1252180 2012-03-12

Publications (2)

Publication Number Publication Date
EP2639797A1 EP2639797A1 (de) 2013-09-18
EP2639797B1 true EP2639797B1 (de) 2018-04-04

Family

ID=46982353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12176539.0A Not-in-force EP2639797B1 (de) 2012-03-12 2012-07-16 Elektrisches Übertragungskabel, insbesondere für Freileitung

Country Status (5)

Country Link
US (1) US9583233B2 (de)
EP (1) EP2639797B1 (de)
AU (1) AU2013231579B2 (de)
CA (1) CA2864764A1 (de)
WO (1) WO2013135489A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103886996B (zh) * 2014-01-27 2016-06-29 中国南方电网有限责任公司超高压输电公司 钢芯铝合金型线绞线架空导线及其制造工艺
USD815047S1 (en) 2014-09-25 2018-04-10 Conway Electric, LLC Overbraided electrical cord with X pattern
ES2528171B1 (es) * 2014-10-31 2015-11-18 La Farga Lacambra S.A.U. Cable para líneas aéreas y procedimiento de fabricación
CN104851509A (zh) * 2015-05-13 2015-08-19 姜明利 锁股式密封型承荷探测电缆
RU2747274C2 (ru) * 2015-12-11 2021-05-04 СиТиСи ГЛОБАЛ КОРПОРЕЙШН Несущие тросы для электропоездов, способы изготовления и способы для установки
CN107576407A (zh) * 2016-07-04 2018-01-12 广州供电局有限公司 架空线温度检测装置
BE1025729B1 (nl) * 2017-11-21 2019-06-24 Lamifil N.V. Stille geleider
CN109887681B (zh) * 2018-12-27 2020-05-19 广西纵览线缆集团有限公司 高导电耐热铝合金导线的制备方法
CN112951488B (zh) * 2021-01-28 2022-09-20 深圳市汇昇科技发展有限公司 一种铝合金线缆制作设备及其制作方法

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DE1167932B (de) * 1959-09-08 1964-04-16 Johann Zagorski Dr Ing Hochspannungsvolleiter
BE1002786A4 (fr) 1989-01-26 1991-06-11 Hainaut Cableries Cordries Sa Cable electrique destine aux hautes tensions.
US7402753B2 (en) * 2005-01-12 2008-07-22 Schlumberger Technology Corporation Enhanced electrical cables
FR2896911B1 (fr) 2006-02-01 2008-03-21 Nexans Sa Conducteur de transport electrique pour ligne aerienne
ITMI20060297A1 (it) * 2006-02-17 2007-08-18 Angeli Prodotti S R L Cavo conduttore per linee elettriche
FR2909481B1 (fr) * 2006-12-01 2009-01-23 Nexans Sa Conducteur de transport electrique pour ligne aerienne
US20100059249A1 (en) * 2008-09-09 2010-03-11 Powers Wilber F Enhanced Strength Conductor
FR2941812A1 (fr) 2009-02-03 2010-08-06 Nexans Cable de transmission electrique a haute tension.
US8969728B2 (en) * 2009-08-18 2015-03-03 Halliburton Energy Services, Inc. Smooth wireline

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
EP2639797A1 (de) 2013-09-18
AU2013231579B2 (en) 2017-01-05
AU2013231579A1 (en) 2014-09-25
CA2864764A1 (fr) 2013-09-19
US9583233B2 (en) 2017-02-28
WO2013135489A1 (fr) 2013-09-19
US20150027773A1 (en) 2015-01-29

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