EP1217634A1 - Hochspannungskabel mit mindestens einem faseroptischen Kabel - Google Patents

Hochspannungskabel mit mindestens einem faseroptischen Kabel Download PDF

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Publication number
EP1217634A1
EP1217634A1 EP00204617A EP00204617A EP1217634A1 EP 1217634 A1 EP1217634 A1 EP 1217634A1 EP 00204617 A EP00204617 A EP 00204617A EP 00204617 A EP00204617 A EP 00204617A EP 1217634 A1 EP1217634 A1 EP 1217634A1
Authority
EP
European Patent Office
Prior art keywords
cable
optical
fibre
tensile
armour
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Withdrawn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
EP00204617A
Other languages
English (en)
French (fr)
Inventor
Allan Jensen
Peter A. Riisager
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 AS
Original Assignee
NKT Cables AS
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 AS filed Critical NKT Cables AS
Priority to EP00204617A priority Critical patent/EP1217634A1/de
Publication of EP1217634A1 publication Critical patent/EP1217634A1/de
Withdrawn legal-status Critical Current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
    • H01B9/00—Power cables
    • H01B9/005—Power cables including optical transmission elements

Definitions

  • the present invention relates to a high-voltage power cable for submarine power transmission comprising one or more cable cores, each core comprising a conductor with an insulation system around the conductor, a sheath encompassing the cable cores, a tensile armour comprising a plurality of helical tensile wires wound around the sheath, at least one optical-fibre cable, and an outer protective cover jacketing the tensile armour.
  • optical-fibre conductors are being provided in association with the power cable.
  • the optical-fibre conductors are fragile and may easily be damaged by mechanical impact.
  • a power cable in which the sheath is made up by reinforcement rods that are shaped to form a close circular fitting around the concentric wire conductor. Spaces are provided between some of the reinforcement rods. In these spaces, optical-fibre conductors are provided.
  • This cable design is expensive to produce and offers only limited protection to the optical fibres against mechanical impact. Moreover, this incorporation of optical-fibre transmission cables into a power cable is only suitable for single electric conductor cables.
  • a high-voltage cable of the initially mentioned kind wherein the at least one optical-fibre cable is peripherally positioned in the tensile armour between two tensile wires thereof and provided with a protecting means.
  • the optical-fibre cable is integrated in the cable structure in a particularly advantageous manner, so that it is ensured that the optical-fibre cable is easily accessible whilst being sufficiently well-protected.
  • the cable is relatively simple in its design as the optical-fibre cable is provided in the tensile armour and may merely be a replacement of a tensile wire in the armour.
  • the optical-fibre cable comprises a number of optical fibres arranged in a tubular casing. In association with the optical-fibre cable, protecting means are provided for protecting the optical-fibre cable against mechanical impact.
  • the protecting means includes a protective strip positioned on the outside of the tensile armour adjacent to the optical-fibre cable in such a way that the optical-fibre cable and at least part of the neighbouring tensile wires on each side of the optical-fibre cable are covered.
  • a particularly simple embodiment of the protecting means is provided offering a good protection of the optical-fibre cable against mechanical impact as well as being relatively easy to apply during the manufacturing process.
  • the protective strip is provided with a lay angle identical with that of the tensile wires and the optical-fibre cable or cables, so that it follows the optical cable along and around the tensile armour immediately inside the outer protection of cable.
  • the protective strip is provided on the inside of outermost layer of the tensile armour shaped with an outwardly protruding groove in which the optical-fibre cable is provided.
  • the protective strip is held in place by the two neighbouring tensile wires due to the serpentine cross-sectional shape.
  • the protective strip is a flat band helically disposed with the same lay angle as the tensile wires on the outer perimeter of the tensile armour.
  • This solution is particularly simple and specially suitable for the manufacturing process as the flat band easily bends around the cable in a helical shape. Moreover, it is a particularly suitable solution for the manufacture of long cable lengths.
  • the protecting means includes a Bowden cable accommodating the optical-fibre cable.
  • a Bowden cable accommodating the optical-fibre cable.
  • the diameter of the optical-fibre cable is equal to or smaller than the diameter of the neighbouring tensile wires of the armour.
  • a power cable according to the invention may comprise either a single core or a multiple of cable cores.
  • the power cable may be a DC or an AC high-voltage power cable, either a mass-impregnated, flat-type oil-filled or an XLPE cable or other types.
  • the power cable includes two or more optical-fibre cables each associated with protecting means, wherein the protecting means is provided with individual identification means.
  • the identification means may include colour codes, printing, embossing and/or other kinds of individualisation by providing the protecting means with a predetermined difference in shape and/or a predetermined difference in diameter or width of the shield.
  • each of the optical-fibre cables is easy to identify at each end of the cable, whereby it is ensured that a correct connection of the cable is being performed.
  • the cable comprises one or more cable cores 1 arranged in a circular formation, as shown in figs. 1 to 3, or next to each other to form a flat configuration power cable, as shown in figs. 7 to 9.
  • the cable cores comprise a conductor which is provided with an insulation system (not shown).
  • the cable cores 1 are encompassed by a lead sheath 2.
  • the sheath 2 is protected by a tensile armour 3 jacketing the sheath 2.
  • the tensile armour 3 is coated by an outer sheath (not shown) which protects the cable and prevents water from penetrating the cable.
  • the tensile armour 3 is made up by a number of helically wound tension wires 4.
  • this armour 3 at least one of the tensile wires 4 is replaced by an optical fibre cable 5.
  • the optical-fibre cable 5 is easily accessible for maintenance and repair.
  • a protecting means 6 is provided.
  • the protecting means 6 may be designed in different ways.
  • the protecting means 6 is not shown.
  • protection may be provided by a reduced diameter of the optical cable 5 relative to the tensile wires 4, so that an impact will be absorbed by the tensile wires 4 instead of the fragile optical cable 5.
  • Another solution could be that the optical cable 5 is provided with a Bowden cable 63 (see fig. 12) in order to provide the required impact strength.
  • the optical cable 5 is shielded by a protective strip 6 positioned on the outside perimeter of the tensile armour 3.
  • the strip 6 is laid around the tensile armour 3 in the same lay angle as the tensile wires 4 and the optical cable 5.
  • the strip 6 is positioned on the perimeter of the tensile armour 3 so that it completely covers the optical cable 5 and two neighbouring tensile wires 4.
  • the protective strip is generally a flat strip of metal or another suitable material, making the strip 6 is easy to bend and to wind around the cable.
  • a flat protective strip is particularly suitable due to the geometry of the cable.
  • the tensile armour 3 is made up by two layers of helically counter-wound wires 4.
  • the optical cable 5 is arranged in the outermost layer.
  • One or more optical cables 5 could alternatively be arranged in another layer of tensile wires.
  • Figs. 10 and 11 show two partial cross-section views of a tensile armour 3 with two embodiments of the protective metal strip 6.
  • the serpentine-shaped strip 61 is held in place by the neighbouring tensile wires 41, 42 on each side of the optical cable 5.
  • a protective strip 62 with a slightly different shape is shown.
  • the bent strip 63 is held in place by at least the neighbouring tensile wires 41, 42 and the adjacent tensile wires 4 in the armour 3.
  • FIG 12 a partial cross-section view of a tensile armour 3 with flat protective strip 60 is shown.
  • the strip 60 is positioned on the outside of the tensile armour 3 covering the optical cable 5 and at least the neighbouring the tensile wires 41, 42.
  • the strip 60 is helically wound around the tensile armour 3 with the same lay angle as the optical cable 5 and the tensile wires 4.
  • the strip 60 is secured to the tensile armour in a simple manner.
  • FIG. 13 a cross-section view of another embodiment of the protecting means is shown.
  • the optical fibre cable 5 is provided with a Bowden cable 63 around the optical cable 5.
  • the Bowden cable 63 is a coiled steel wire that offers the optical cable good protection against mechanical impacts.
  • the optical fibre cable 5 inserted in the Bowden cable 63 is then wound together with the tensile wires 4 around the sheath 2.

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  • Communication Cables (AREA)
EP00204617A 2000-12-19 2000-12-19 Hochspannungskabel mit mindestens einem faseroptischen Kabel Withdrawn EP1217634A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00204617A EP1217634A1 (de) 2000-12-19 2000-12-19 Hochspannungskabel mit mindestens einem faseroptischen Kabel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00204617A EP1217634A1 (de) 2000-12-19 2000-12-19 Hochspannungskabel mit mindestens einem faseroptischen Kabel

Publications (1)

Publication Number Publication Date
EP1217634A1 true EP1217634A1 (de) 2002-06-26

Family

ID=8172455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00204617A Withdrawn EP1217634A1 (de) 2000-12-19 2000-12-19 Hochspannungskabel mit mindestens einem faseroptischen Kabel

Country Status (1)

Country Link
EP (1) EP1217634A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2065901A2 (de) * 2007-11-28 2009-06-03 General Electric Company Energieversorgungshilfssystem für Hochsee-Windkraftanlagen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3511085A1 (de) * 1984-04-10 1985-10-17 Felten & Guilleaume Energietechnik GmbH, 5000 Köln 20 kv-seekabel mit eingelegten nachrichtenleitungen
EP0538698A1 (de) * 1991-10-24 1993-04-28 Alcatel Stk A/S Zusammengesetztes elektrisches/optisches Leistungskabel
JPH09259659A (ja) * 1996-03-22 1997-10-03 Sumitomo Electric Ind Ltd 光ファイバ複合水底長尺体及びその製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3511085A1 (de) * 1984-04-10 1985-10-17 Felten & Guilleaume Energietechnik GmbH, 5000 Köln 20 kv-seekabel mit eingelegten nachrichtenleitungen
EP0538698A1 (de) * 1991-10-24 1993-04-28 Alcatel Stk A/S Zusammengesetztes elektrisches/optisches Leistungskabel
JPH09259659A (ja) * 1996-03-22 1997-10-03 Sumitomo Electric Ind Ltd 光ファイバ複合水底長尺体及びその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 02 30 January 1998 (1998-01-30) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2065901A2 (de) * 2007-11-28 2009-06-03 General Electric Company Energieversorgungshilfssystem für Hochsee-Windkraftanlagen
EP2065901A3 (de) * 2007-11-28 2012-09-26 General Electric Company Energieversorgungshilfssystem für Hochsee-Windkraftanlagen

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