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WO2002025342A1 - Systeme de cable comportant un cable optique et un element de haubanage, dispositif et procede pour produire ce systeme de cable - Google Patents

Systeme de cable comportant un cable optique et un element de haubanage, dispositif et procede pour produire ce systeme de cable Download PDF

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Publication number
WO2002025342A1
WO2002025342A1 PCT/DE2001/003636 DE0103636W WO0225342A1 WO 2002025342 A1 WO2002025342 A1 WO 2002025342A1 DE 0103636 W DE0103636 W DE 0103636W WO 0225342 A1 WO0225342 A1 WO 0225342A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
outer circumference
guy
arrangement according
optical
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.)
Ceased
Application number
PCT/DE2001/003636
Other languages
German (de)
English (en)
Inventor
Ulrich Greiner
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.)
Corning Research and Development Corp
Original Assignee
CCS Technology Inc
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 CCS Technology Inc filed Critical CCS Technology Inc
Priority to AU2001295430A priority Critical patent/AU2001295430A1/en
Publication of WO2002025342A1 publication Critical patent/WO2002025342A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4416—Heterogeneous cables
    • G02B6/4422—Heterogeneous cables of the overhead type
    • G02B6/4423—Electro-corrosion preventing means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/48—Overhead installation
    • G02B6/483—Installation of aerial type

Definitions

  • Cable arrangement with an optical cable and a guy element as well as device and method for producing a cable arrangement
  • the present invention relates to a cable arrangement with an optical cable and an anchoring element for anchoring the optical cable in an electrical field region, which is applied along a partial length of the cable to its outer circumference, and to an apparatus and a method for producing a cable arrangement which has an optical Cable and a guy element for bracing the optical cable.
  • High-voltage overhead lines are usually used to transmit electrical energy over long distances and in large quantities. For example, in Germany voltage levels in the maximum voltage level of 220 kV or 400 kV effective voltage are known. In industrialized countries, there is good infrastructure for such overhead line networks. It is therefore often used to integrate fiber optic cables for data transmission in the existing overhead lines.
  • optical cables In general, only minor structural measures are required to install the optical cables, while at the same time large distances can be bridged.
  • self-supporting optical cables which are suitable for hanging on masts in existing overhead line routes for high-voltage overhead lines, can be suspended in the field area between the phase cables for the transmission of electrical energy and the ground.
  • Such cables are known in particular as fully dielectric self-supporting optical air cables and are also known as ADSS (All Dielectric Seif-Supporting) -
  • ADSS cables are particularly well suited for integration in high-voltage lines because of their wrestle weight the high voltage pylons only slightly.
  • the high potential that exists in normal operation of the line leads to a strong electrical field between phase cables and earth and between phase cables and mast.
  • optical cables which are usually metal-free and essentially non-conductive, are introduced into the existing electrical field, the stray capacitances between phase cables, cables, earth and grounded mast lead to the optical cables being charged to an electrical potential.
  • it is generally not desirable to disconnect and ground the relevant overhead line for the installation of optical cables in high-voltage lines it is necessary to earth the optical cables on the mast to avoid endangering installation personnel.
  • the field area of, for example, a high-voltage overhead line is generally a tensioning element, for example in the form of a tensioning spiral, applied to the outer circumference along a partial length of the cable.
  • a tensioning element for example in the form of a tensioning spiral
  • Particularly high voltage drops occur at the transition of the guy element in the longitudinal direction of the cable to the outer circumference of the cable at the end of the guy element.
  • the formation of partial discharges due to a discontinuous field distribution is favored at the transition of the guy element to the outer circumference of the cable. These partial discharges can destroy the cable sheath in particular and contribute to aging.
  • Such a cable arrangement for high-voltage overhead lines with a metal-free, self-supporting optical cable with a cable core and a cable sheath surrounding the cable core is known from EP 0 214 480 B1, the cable core being weakly electrically conductive.
  • the capacitive coupling between the semiconducting cable core and the tensioning spirals provided as a fastening and earthing device on the mast can lead to internal partial discharges occurring in the cable sheath in the area with the highest field strength, which can lead to breakdowns.
  • the object of the present invention is to provide a cable arrangement with an optical cable and an anchoring element of the type mentioned at the outset, with which a long service life of the cable can be achieved in particular when the cable is installed in electrical field areas with comparatively high field strengths.
  • the field control element is designed as an electrically conductive layer which is positively applied to the outer circumference of the cable and the guy element. This creates a seamless bond between the outer circumference of the cable, the guy element and the field control element, in particular at the transition point at the end of the guy element to the outer circumference of the cable.
  • the electrically conductive layer is formed by an easy-to-assemble 2-component material that is applied in the liquid state to the outer circumference of the cable and the guy element.
  • the 2-component material has, for example, self-curing properties, or it can be cured by heat, moisture or UV radiation.
  • Such a base material is admixed with, for example, silicon carbide, metal oxide, intrinsically conductive polymers, organic antistatic agents and / or carbon black to achieve the required specific conductivity and material properties.
  • silicon carbide silicon carbide
  • metal oxide metal oxide
  • intrinsically conductive polymers organic antistatic agents and / or carbon black
  • one or more of the materials mentioned is mixed, for example, into a component of the base material, so that the required material property is given in the cured state.
  • the field control element advantageously has a specific conductivity between 10 2 and 10 10 ⁇ cm.
  • the guy element is designed, for example, as a guy spiral, which surrounds the cable in a helical manner in the longitudinal direction of the cable.
  • the optical cable is preferably designed as a fully dielectric, self-supporting aerial cable.
  • the cable has a cable sheath and a cable core, the cable core being weakly electrically conductive.
  • This additionally counteracts in particular a further known aging mechanism of optical cables which are installed in electrical field areas, which is caused by dirt and moisture on the surface of the jacket. Due to the different surface conductivities of dry and moist zones of the cable sheath, surface discharges with damage to the sheath surface can occur, especially if the electric field strength in the dry zones exceeds the breakdown field strength.
  • the aging mechanism known as so-called dry-band areing is counteracted beyond the transition area of the bracing element to the outer circumference of the cable.
  • the object relating to the device is achieved by a device for producing a cable arrangement according to patent claim 10, the cable arrangement having an optical cable and a bracing element for bracing the optical cable, which is applied along a partial length of the cable to its outer circumference, with a filler which encloses the guy element and the outer circumference of the cable and into which a material can be filled in a liquid state.
  • the object relating to the method is achieved by a method for producing a cable arrangement according to claim 14.
  • an electrically conductive layer can be produced, which is applied in a form-fitting manner to the outer circumference of the cable and the guy element.
  • the filler body is poured out with a material in the liquid state and, after the material has hardened, removed again. This creates a completely poured out
  • the packing is advantageously designed such that the material can be cured by heat, moisture or UV radiation.
  • the filling body it is designed as a filling cylinder.
  • To attach the filling body or filling cylinder it is advantageous that it is designed to be foldable.
  • the folding mechanism also enables easy removal of the packing after pouring or curing.
  • FIG. 1 shows a schematic longitudinal illustration of a cable arrangement according to the invention
  • FIG. 2 shows an optical cable installed along a high-voltage overhead line
  • FIG. 3 shows a schematic illustration with regard to the production of a cable arrangement according to the invention
  • Figure 4 shows a cross section through a device for producing a cable assembly according to the invention.
  • FIG. 1 shows a schematic representation of an embodiment of a cable arrangement according to the invention, which has an optical cable OC and an anchoring element AS for anchoring the optical cable OC.
  • the guy element AS is applied along a partial length of the cable OC to its outer circumference.
  • a transition UE of the guy element AS to the outer circumference of the cable OC occurs at a boundary of the guy element AS.
  • a field control element FS is applied to the guy element AS and the outer periphery of the cable OC, which encloses the transition UE of the guy element to the outer periphery of the cable.
  • the field control element FS is designed as an electrically conductive layer which is positively applied to the outer circumference of the cable OC and the guy element AS. This creates a closed system in which discontinuities, which particularly favor partial discharges, are avoided at the UE transition.
  • the field control element FS has a specific conductivity in the range from 10 2 to 10 10 ⁇ cm.
  • FIG. 2 shows an illustration of an optical cable installed along a high-voltage overhead line.
  • cable OC is designed as a fully dielectric, self-supporting aerial cable (ADSS cable).
  • the guy element AS is designed in the form of a guy spiral, which surrounds the cable OC in a helical manner in the longitudinal direction of the cable.
  • the cable arrangement with the optical cable OC and the guy spiral AS is arranged in the field area FB of a high-voltage overhead line.
  • the power transmission line points a plurality of phase ropes, of which only one phase rope PS is shown as an example in FIG.
  • the cable arrangement is fastened via the guy spiral AS to the high-voltage pylon HM, which is grounded and is therefore connected to ground potential M.
  • the tensioning spiral AS is also earthed.
  • the field control element FS is produced with the aid of a filling body FK, which encloses the arrangement of optical cable OC and guy spiral AS in such a way that the transition UE is enclosed by the filling body FK.
  • a material in the liquid state can be filled into the filling body FK via the opening OE.
  • a material MA is filled into the packing FK in the form of a 2-component material. Silicon carbide, metal oxide, intrinsically conductive polymers, organic antistatic agents and / or carbon black are added to one of the components of the material MA. After the filling body FK has been poured out with the material MA, it is cured with heat, moisture or UV radiation. For this purpose, the filling body FK is designed in a suitable manner. Finally, after the material MA has fully hardened, the packing FK is removed.
  • FIG. 4 shows a schematic cross section through the arrangement comprising the packing FK and the cable OC.
  • the filling body FK in the form of a filling cylinder is designed to be foldable on the hinge S.
  • the filling cylinder FK can be folded apart in both circumferential directions UI and U2.
  • the sealing lips DL are used to seal the filling cylinder.
  • the cable OC has a cable sheath KM and a cable core KS, the cable core KS being filled with a weakly electrically conductive material.
  • the cable core KS preferably has a specific guide between 10 5 and 10 10 ⁇ cm.
  • the optical fibers LW of the optical cable OC are arranged inside the cable core KS.
  • a completely cast field control element FS according to FIG. 1 can be produced, which in the form of an electrically conductive layer surrounds the outer circumference of the cable OC and the guy spiral AS in a form-fitting manner.
  • partial discharges due to high potential differences and discontinuous field profiles at the transition UE of the cable arrangement are effectively inhibited.
  • the service life of the OC cable is effectively extended.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Communication Cables (AREA)

Abstract

L'invention concerne un système de câble comportant un câble optique (OC) et un élément de haubanage (AS) pour haubaner ledit câble optique dans une zone de champ (FB) électrique, qui est placé le long d'une longueur partielle du câble (OC), sur sa périphérie extérieure. Un élément de commande de champ (FS) sous forme de couche à base de matériau à deux composants, qui est appliqué sur l'élément de haubanage (AS) et la périphérie extérieure du câble (OC), entoure la jonction (UE) de l'élément de haubanage, située dans le sens longitudinal du câble, vers la périphérie extérieure du câble, à la limite de l'élément de haubanage (AS). Les décharges électriques partielles sont réduites, notamment à la jonction (UE) et la durée de vie du câble (OC) se trouve de ce fait prolongée.
PCT/DE2001/003636 2000-09-20 2001-09-20 Systeme de cable comportant un cable optique et un element de haubanage, dispositif et procede pour produire ce systeme de cable Ceased WO2002025342A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001295430A AU2001295430A1 (en) 2000-09-20 2001-09-20 Cable assembly comprising an optical cable and an anchoring element, and a device and method for producing a cable assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10046581.1 2000-09-20
DE10046581A DE10046581A1 (de) 2000-09-20 2000-09-20 Kabelanordnung mit einem optischen Kabel und einem Abspannelement sowie Vorrichtung zur Herstellung einer Kabelanordnung

Publications (1)

Publication Number Publication Date
WO2002025342A1 true WO2002025342A1 (fr) 2002-03-28

Family

ID=7656962

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/003636 Ceased WO2002025342A1 (fr) 2000-09-20 2001-09-20 Systeme de cable comportant un cable optique et un element de haubanage, dispositif et procede pour produire ce systeme de cable

Country Status (3)

Country Link
AU (1) AU2001295430A1 (fr)
DE (1) DE10046581A1 (fr)
WO (1) WO2002025342A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3544085A1 (de) * 1985-12-13 1987-06-19 Kabelmetal Electro Gmbh Elektrisches luftkabel mit lichtwellenleitern
US4928135A (en) * 1988-02-23 1990-05-22 Amphenol Socapex Mechanical holding device for a free-structure optical-fiber cable
EP0403285A2 (fr) * 1989-06-14 1990-12-19 BICC Public Limited Company Système de transmission optique aérien
DE4124158A1 (de) * 1991-07-20 1993-01-21 Kabelmetal Electro Gmbh Armatur zum abspannen von metallfreien luftkabeln
US5758005A (en) * 1995-10-19 1998-05-26 The Furukawa Electric Co., Ltd. Anchor device for an optical cable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3506883A1 (de) * 1985-02-27 1986-08-28 Philips Patentverwaltung Gmbh, 2000 Hamburg Metallfreies, in der nachbarschaft zu elektrischen hochspannungsanlagen verlegtes optisches luftkabel
DE3837285A1 (de) * 1988-11-03 1990-05-10 Rheydt Kabelwerk Ag Torsionsarmes optisches kabel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3544085A1 (de) * 1985-12-13 1987-06-19 Kabelmetal Electro Gmbh Elektrisches luftkabel mit lichtwellenleitern
US4928135A (en) * 1988-02-23 1990-05-22 Amphenol Socapex Mechanical holding device for a free-structure optical-fiber cable
EP0403285A2 (fr) * 1989-06-14 1990-12-19 BICC Public Limited Company Système de transmission optique aérien
DE4124158A1 (de) * 1991-07-20 1993-01-21 Kabelmetal Electro Gmbh Armatur zum abspannen von metallfreien luftkabeln
US5758005A (en) * 1995-10-19 1998-05-26 The Furukawa Electric Co., Ltd. Anchor device for an optical cable

Also Published As

Publication number Publication date
DE10046581A1 (de) 2002-03-28
AU2001295430A1 (en) 2002-04-02

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