Conductor cable for wind power generation tower drum

Abstract

The invention relates to a conductor cable for a wind power generation tower. The conductor cable comprises a stranded conductor, an insulating layer, a first flame-retardant belting layer, a sparsely-wound metal wire, a reverse metal belt, a second flame-retardant belting layer and an outer sheath, wherein the stranded conductor adopts a trapezoidal single wire concentric stranded structure, and is wrapped with the insulating layer, the insulating layer is wrapped with the first flame-retardant belting layer, the first flame-retardant belting layer is wrapped by the sparsely-wound metal wire, the sparsely-wound metal wire is wrapped by the reverse metal belt, the reverse metal belt is wrapped with the second flame-retardant belting layer, and the second flame-retardant belting layer is wrapped with the outer sheath. According to the conductor cable for the wind power generation tower drum, bending deformation and thermal expansion deformation caused by vibration can be reduced, and the conductor cable is resistant to high and low temperature changes in a field environment, resistant to oil, resistant to abrasion, resistant to corrosion and resistant to long-term sunlight aging, has the good lightning protection characteristic and the halogen-free, low-smoke and high-flame-retardant characteristics, reduces the fault rate, and prolongs the service life.

Description

technical field [0001] The invention relates to the technical field of cables for wind power generation, in particular to a conductor cable for wind power generation towers. Background technique [0002] Wind energy is one of the most commercially valuable energies in clean energy utilization in the world, and is an important player in the future renewable energy field. Wind turbines absorb wind energy by the rotation of the wind rotor, convert the kinetic energy of the air into mechanical energy, and then convert it into electrical energy and transmit it to the grid. In the process of replacing traditional energy sources with wind power, the cost of power generation is the focus of consideration. With the change of national policy, grid parity is the general trend of wind power development. However, wind power generation is limited by geographic location and wind resources. It is difficult to control the cost of site selection and construction of wind farms. In order to r...

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Problems solved by technology

[0003] The tower is the main supporting part of the wind turbine. It is a towering structure with a thin-shelled cylindrical shape. The cables in the straight section of the tower are fixedly laid power cables inside the tower. In order to reduce costs, they are usually replaced by ordinary aluminum conductor cables or aluminum alloy cables. However, due to the wind field environment, installation site and tower Due to the influence of its own height, this part of the cable still faces threats such as lightning strikes, vibration, high and low temperature changes, and solar aging for a long time. It is difficult for ordinary cables to withstand the above-mentioned environmental impacts in the 25-year life cycle, resulting in frequent accidents in wind farms and increased maintenance costs.

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