Photoelectrical composite torsion-resistant medium-voltage wind power cable and method for manufacturing the same

Abstract

The present invention discloses a photoelectrical composite torsion-resistant medium-voltage wind power cable and a method for manufacturing the same. The cable includes a cable core, a cable wrapping layer, an inner sheath layer, an aramid fiber woven layer and an oversheath layer. The cable core is coated with the cable wrapping layer, the inner sheath layer, the aramid fiber woven layer and the oversheath layer in sequence. The cable core is composed of three power transmission wire cores, three ground wire cores and an optical unit which are twisted together. According to the invention, the optical fiber structure is introduced into the cable, so that the cable can be better used for signal transmission and has the characteristics and functions of optical cables via its own system line resources, thereby achieving system operation monitoring and ensuring secure and stable operation of the system. The power transmission wire cores and the ground wire cores both have outer aramid fiber woven reinforcement layers. As the continuous use temperature range of aramid fibers is -196 DEG C to 204 DEG C, and the aramid fibers have high strength which is 5 to 6 times that of steel wires, so that the strength of the cable is enhanced, and the phenomena such as damage and cracking of the wire cores due to torsion are prevented, thereby ensuring that the cable is not cracked or damaged during torsion, and prolonging the service life of the cable.

Description

technical field [0001] The invention belongs to the field of cables, and in particular relates to a photoelectric composite torsion-resistant medium-voltage wind energy cable and a preparation method thereof. Background technique [0002] With the development of the wind power market, the capacity of wind turbines has increased year by year, and the capacity of a single unit has increased to the megawatt level. It can be seen that there is also a large market for high-power medium-voltage wind power cables used with wind turbines. The wind energy cables are installed and laid in the tower, and the environment is harsh and sparsely populated. In addition to the high requirements for the cable's tensile strength, cold resistance, and twist resistance, it also has high requirements for system monitoring and data transmission. Safe and stable operation. However, the problem existing in the prior art is that the existing medium-voltage wind power cables are only limited to reali...

AI Technical Summary

Problems solved by technology

The problem with the existing technology is that the existing medium-voltage wind power cables are only limited to power transmission.

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