Large-cross-section carbon-fiber-composite-core semi-hard aluminum lead

Abstract

The invention relates to a large-cross-section carbon-fiber-composite-core semi-hard aluminum lead comprising a carbon-fiber composite core rod and a plurality of semi-hard aluminum wire layers twisted outside the carbon-fiber composite core rod. The carbon-fiber composite core rod includes a composite-material inner core and a glass-fiber composite material layer coating the composite-material inner core. The semi-hard aluminum lead has advantages of high carrying capacity, high strength, low sag, and low usage cost; and the tower number is reduced. The large-cross-section carbon-fiber-composite-core-included semi-hard aluminum lead applied to a large-cross-section carbon-fiber composite core widely is capable of creating great economic and social benefits to build the strong smart grid, realizing cleaning replacement, and promoting energy conservation and environment protection. With development of the ultra-high-voltage grid, the semi-hard aluminum lead has the great significance in stimulating the domestic demand and economic growth, leading the transformation and upgrading of the equipment manufacturing industry, promoting coordinated development between the western and eastern regions, increasing employment, and treating the atmospheric contamination.

Description

technical field [0001] The invention relates to the technical field of cable core preparation, in particular to a large-section carbon fiber composite core semi-duraluminum conductor. Background technique [0002] Carbon fiber composite core conductor (abbreviated as ACCC) is a conductor for overhead transmission lines made of carbon fiber composite core instead of traditional steel core. Carbon fiber composite core wire has the characteristics of high strength, corrosion resistance, large carrying capacity, small linear expansion coefficient, small sag, light weight, etc., and can meet the higher requirements of energy saving and environmental protection in the field of overhead power transmission. At the same time, due to the use of soft aluminum as the conductor material of the carbon fiber composite core wire, the conductivity has been greatly improved compared with the ordinary hard aluminum wire, which effectively reduces the transmission loss. [0003] At present, th...

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Problems solved by technology

[0004] (1) The conventional carbon fiber composite core wire conductor material uses fully annealed annealed soft aluminum wire. This material is characterized by low strength, low resistivity, and high elongation, which can meet the design requirements of most projects. The disadvantages are The strength is low, resulting in low comprehensive tensile strength of the wire, and the wire is easy to wear during construction

[0005] (2) Compared with ordinary wires, due to the use of composite materials, the structural characteristics of carbon fiber composite core wires may be more susceptible to damage due to galloping. However, at present, due to the toughness of carbon fiber composite core wires Therefore, the conventional mass-type anti-dancing device may no longer be suitable for carbon fiber composite core conductors, and it is urgent to carry out research on new anti-dancing technology to ensure that carbon fiber composite core conductors have the ability to resist galloping disasters;

Therefore, the UHV DC transmission capacity increase has encountered technical bottlenecks in both converter station equipment and transmission line conductors

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