EP2159803A1 - Electric conductor, its manufacturing and mounting - Google Patents

Electric conductor, its manufacturing and mounting Download PDF

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Publication number
EP2159803A1
EP2159803A1 EP08014955A EP08014955A EP2159803A1 EP 2159803 A1 EP2159803 A1 EP 2159803A1 EP 08014955 A EP08014955 A EP 08014955A EP 08014955 A EP08014955 A EP 08014955A EP 2159803 A1 EP2159803 A1 EP 2159803A1
Authority
EP
European Patent Office
Prior art keywords
wires
conductor
steel
aluminium
length
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Withdrawn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
EP08014955A
Other languages
German (de)
French (fr)
Inventor
Henrik Frankfurt
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
Priority to EP08014955A priority Critical patent/EP2159803A1/en
Publication of EP2159803A1 publication Critical patent/EP2159803A1/en
Withdrawn legal-status Critical Current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
    • H01B5/08—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
    • H01B5/104—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 metallic wires, e.g. steel wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023—Alloys based on aluminium

Definitions

  • the present invention relates to the electric conductors of air-lines of an electricity transmission.
  • Electric conductors are known,which contain a wires, from a strong material,for example from steel, on which a wires from a material with good electric characteristics,for exampie,aluminium,are wound.
  • the object of present invention is to increase the tensile strength of steel-aluminum conductors.
  • a wires from steel subject an expansible stretching, and it make before winding of an aluminium wires. After winding of an aluminium wire,on the ends of a site with the winding aluminium wires, install wire clips for fastening a positioning of wires.
  • the optimum size of a stretching of the steel wires for each type of a conductor, it is make several samples of conductor for different sizes of force of the stretching of the steel wire,including size of maximum of the working stretch(permissible load) of the steel wire,and for different sizes of tensile strength of steel( different sort of steel ),define tensile strength and price of the produced samples of a conductors and choose the optimum conductor for the electricity transmission fine.
  • the tension of steel wires at manufacturing the optimum sample of a conductor is an optimum tension for manufacturing such conductor.
  • Exceeding the length of aluminium wires above length of steel wires in the optimum sample of a conductor is the optimum of exceeding the length of the wires for such conductor.
  • a conductor take up from the coil,saving of its tension.
  • the offered conductor it is possible to apply stronger steel of wires, and it will in addition increase tensile strength of a conductor.
  • Advantageous effect of the invention offer reduces cost of a line,increase its safety and reduces inconveniences for an environment because of supports.

Landscapes

  • Non-Insulated Conductors (AREA)

Abstract

The invention relates to the electric conductors of air-lines for electricity transmission, which contains a wires from a strong material, for example from steel, on which are wound wires from a material with good electric characteristics, for example from aluminium.
In order to increase the tensile strength of conductor, the length of aluminium wires exceeds the length of the steel wires, and ratio of the length of the aluminium wires and the length of the steel wires equals the value, for which the manufacturing of the lines is optimal, aluminium wires have deformation of compression,
And steel wires have deformation of stretching, therefore it is possible to increase interval between towers of a line, the costs of the lines can be reduced and the safety and the reliability can be improved by the replacement of conductors of old lines by new ones. Finally the inconveniences for the environment caused by towers of the lines are reduced by the invention.

Description

  • The present invention relates to the electric conductors of air-lines of an electricity transmission.Electric conductors are known,which contain a wires, from a strong material,for example from steel, on which a wires from a material with good electric characteristics,for exampie,aluminium,are wound.
  • Same conductors are,for example,been disclosed in State standards of Russia on wires from steel and aluminium and by website under
    Figure imgb0001
    Steel wires are increasing the conductors tensile strength and are increasing an interval between supports of a line, and it improves characteristics of lines.
  • Lack of such conductor that bad use of tensile strength of steel ( it is less than 50%).
  • This lack because during stretching of the conductor,destruction of the aluminium wires occurs at smaller stretching than the steel wires because of smaller tensile strength of aluminium. It limits tensile strength of all conductor, About it is written into the book of author B.M. Sarychev. The name of the book; "The directory on designing air-lines of an electricity transmission."Publishing house of the Ministry of municipal services RSFSR Moscow-1958 year,page 171,paragraph 10 "Features of calculation of steel-aluminium conductors,
  • The object of present invention is to increase the tensile strength of steel-aluminum conductors.
  • This object is achieved by exceeding the length of aluminium wires above length of steel wires by optimum size, this is optimum ratio( quotient of division) of length of aluminium wires to length of steel wires. At the accommodation in a conductor jointly steel wires and aluminium wires,aluminium wires have deformation of compression and steel wires have deformation of stretching,size of the force of stretching equals the size of the force of compression. At a stretching of a conductor, at an initial step of a stretching,deformation of compression of aluminium wires decreases and deformation of stretching of steel wires-increases.
  • After decrease (reduction) to zero of deformation of aluminium wires, deformation of their stretching begins. Destruction of aluminium wires occurs (happens) to greater force of stretching of a conductor and at the best use of tensile strength of steel wires.
  • For manufacturing a conductor, a wires from steel subject an expansible stretching, and it make before winding of an aluminium wires. After winding of an aluminium wire,on the ends of a site with the winding aluminium wires, install wire clips for fastening a positioning of wires.
  • For determination of the optimum size of a stretching of the steel wires,for each type of a conductor, it is make several samples of conductor for different sizes of force of the stretching of the steel wire,including size of maximum of the working stretch(permissible load) of the steel wire,and for different sizes of tensile strength of steel( different sort of steel ),define tensile strength and price of the produced samples of a conductors and choose the optimum conductor for the electricity transmission fine. The tension of steel wires at manufacturing the optimum sample of a conductor is an optimum tension for manufacturing such conductor. Exceeding the length of aluminium wires above length of steel wires in the optimum sample of a conductor is the optimum of exceeding the length of the wires for such conductor.
  • It is offered a new additional way to wind of the produced conductor on the coil and to mounting of a conductor on transmission lines. The produced conductor,after winding its aluminium wires on steel wires, be reeled up on the coil in the tense condition,for reduction of deformation of compression of the aluminium wires. Thus force of stretching wires of steel,exceeds force of compression of aluminium wires on optimal size for reception of good characteristics of a transmission line. It expands opportunities of increase of tensile strength of a conductor. Both ends of a conductor need to be fixed on the coil for preservation of a stretching of a conductor.
  • At a mounting of a conductor on transmission lines, a conductor take up from the coil,saving of its tension. In the offered conductor it is possible to apply stronger steel of wires, and it will in addition increase tensile strength of a conductor.
  • Advantageous effect of the invention: offer reduces cost of a line,increase its safety and reduces inconveniences for an environment because of supports.

Claims (3)

  1. Electric conductor of air-lines of an electricity transmission,which containing a wires from a strong material, for example from steel, on which are wound a wires from a material with good electric characteristics,for example from aluminium,
    Characterized in that the length of aluminium wires exceed the length of steel, and ratio (quotient of division) of length of aluminium wires to length of steel wires equals the size, for which the characteristics of conductor (its tensile strength and cost) optimal to making the lines.
  2. Mode of manufacturing of the conductor to claim 1,
    Characterized in that, for manufacturing a conductor, a wires from steel subject an expansible stretching,the size of increase of length for the expansible stretching equal to the size exceeding of length of aluminium wires to claim 1,and it make before winding of an aluminium wire, after winding of an aluminium wire,on the ends of a site with the winding aluminium wires, install wire clips for fastening a relative positioning of wires, for determination of the optimum size of a stretching of the steel wires,for each type of a conductor,it is make several samples of conductor,for different sizes of force of the stretching of the steel wire, including size of maximum of the working stretch (permissible load) of the steel wire,and for different size of tensile strength of steel (different sort of steel ),define tensile strength and price of the produced samples of a conductor and choose the optimum conductor for the electricity transmission line,the tension of steel wires at manufacturing the optimum sample of a conductor is an optimum tension for manufacturing such conductor,the exceeding of the length of aluminium wires above length of steel wires in the optimum sample of a conductor is the optimum of exceeding the length of the wires for such conductor,
  3. Mode of keeping and to mounting the conductor to claims 1 and 2,
    characterised in that,the produced conductor,after winding its aluminium wires on steel wires,be reeled up on the coil in the tense condition,thus the force of stretching of steel wires exceeds force of compression of aluminium wires,both the ends of the conductor to fasten to the coil,at a mounting of a conductor on transmission lines, a conductor take up from the coil,saving of its tension.
EP08014955A 2008-08-24 2008-08-24 Electric conductor, its manufacturing and mounting Withdrawn EP2159803A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08014955A EP2159803A1 (en) 2008-08-24 2008-08-24 Electric conductor, its manufacturing and mounting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08014955A EP2159803A1 (en) 2008-08-24 2008-08-24 Electric conductor, its manufacturing and mounting

Publications (1)

Publication Number Publication Date
EP2159803A1 true EP2159803A1 (en) 2010-03-03

Family

ID=40229927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08014955A Withdrawn EP2159803A1 (en) 2008-08-24 2008-08-24 Electric conductor, its manufacturing and mounting

Country Status (1)

Country Link
EP (1) EP2159803A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1173190A (en) * 1914-10-10 1916-02-29 Aluminum Co Of America Composite conductor-cable and method of making the same.
US3676578A (en) * 1970-10-14 1972-07-11 Gkn Somerset Wire Ltd Electric conductor cables for use in overhead power transmissions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1173190A (en) * 1914-10-10 1916-02-29 Aluminum Co Of America Composite conductor-cable and method of making the same.
US3676578A (en) * 1970-10-14 1972-07-11 Gkn Somerset Wire Ltd Electric conductor cables for use in overhead power transmissions

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