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Graphite composited overhead ground wire and preparation method thereof

A technology of composite overhead ground wire and composite graphite wire, which is applied in the direction of carbon-silicon compound conductors, cable/conductor manufacturing, metal/alloy conductors, etc., to achieve the effects of reducing resistance, reducing skin effect, and absorbing heat.

Active Publication Date: 2015-05-06
WUHAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Aiming at the problems existing in the existing overhead ground wire, the present invention provides a graphite composite overhead ground wire with light weight, small resistance, small inductance and low skin effect and its preparation method

Method used

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  • Graphite composited overhead ground wire and preparation method thereof
  • Graphite composited overhead ground wire and preparation method thereof
  • Graphite composited overhead ground wire and preparation method thereof

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Embodiment Construction

[0031] In specific implementation, the main preparation raw materials of the present invention include high-purity worm graphite with a carbon content higher than 85%, metal fibers, carbon fibers, skeleton fibers and adhesives, the metal fibers are copper fibers or aluminum fibers, and the adhesives can be ethyl acrylate The ester water-soluble binder or the resin-based water-soluble binder, the skeleton fiber is an inorganic fiber, and glass fiber or the like can be used.

[0032] The worm graphite is rolled to form worm graphite paper with a smooth surface and uniform thickness. The thickness of the worm graphite paper is preferably 0.1-1 mm. If the thickness of the worm graphite paper is too large, the graphite ribbon is prone to breakage during twisting. Infiltrate the surface layer of carbon fiber and skeleton fiber with adhesive, and then lay them in parallel and equidistant between the upper and lower layers of worm graphite paper. The distance between adjacent fibers is...

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Abstract

The invention provides a graphite composited overhead ground wire and a preparation method thereof. The graphite composited overhead ground wire comprises an inner core composed of a first composited graphite line, a secondary outer layer which is formed by lengthways arranging second composited graphite lines about the outer side of the inner core, and an outermost layer which is formed by knitting metal fibers about the secondary outer layer; the secondary outer layer completely wraps the inner core, and the outermost layer completely wraps the secondary outer layer; the first composited graphite line is prepared by intertwining composited graphite strips; the second graphite lines are prepared by intertwining the composited graphite strips about the metal fibers; each composited graphite strip comprises two vermicular graphite layer, a framework fiber and a carbon fiber, wherein the framework fiber and the carbon fiber are paved between the two graphite layers and are wrapped with adhesive layers. The graphite composited overhead ground wire has the advantages of being light in weight, low in resistance, low in inductive reactance and low in surface effect; the graphite composited overhead ground wire can be matched with an arrester so as to expand the lightning protection range of the overhead ground wire; in addition, the process is simple, the cost is low, and the engineering application effect is obvious.

Description

technical field [0001] The invention relates to the technical field of electric lightning protection and grounding, in particular to a graphite composite overhead ground wire and a preparation method thereof. Background technique [0002] The power grounding system is an important power facility to ensure the safe and reliable operation of power equipment and the personal safety of power operators. A device that protects overhead transmission lines from lightning strikes, also known as lightning protection wires, or ground wires for short. The transmission line spans a vast area, and it is easy to be struck by lightning in the thunderstorm season, which will cause interruption of power transmission, which has become one of the main reasons for power outages in the power system. High-voltage and ultra-high-voltage substations occupy a large area, requiring large areas for direct lightning protection, and it will be difficult to install lightning rods. Therefore, overhead gro...

Claims

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Application Information

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IPC IPC(8): H01B5/00H01B1/04H01B1/02H01B13/00
Inventor 阮江军龚若涵葛贺飞
Owner WUHAN UNIV
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