Wind wheel vane anti-lightning device for wind generating set and mounting method thereof

Abstract

The invention discloses a wind wheel vane anti-lightning device for a wind generating set and a mounting method of the anti-lightning device. A main beam of the wind wheel vane adopts carbon fiber reinforced composite material, an air-termination system is embedded in a wind wheel vane casing of the non-main-beam area, and the air-termination system is grounded through a conducting wire in a wind wheel vane inner cavity; a conductive shunting strip is fixed on the outer surface of the wind wheel vane and is connected with the air-termination system by a nut. According to the wind wheel vane anti-lightning device, the conductive shunting strip is arranged on the outer surface of the wind wheel vane, the area of the protection zone of the wind wheel vane anti-lightning device can be improved, the air termination effect is good, and the wind wheel vane anti-lightning device is applicable to the wind generating set of which the main beam of the wind wheel vane is made of the carbon fiber reinforced composite material.

Description

technical field [0001] The invention relates to the field of lightning protection devices for wind power generators, in particular to a lightning protection device for wind rotor blades of a wind power generator and an installation method thereof. Background technique [0002] With the development of modern wind power generation technology, the single-unit capacity of wind turbines is increasing, and the height of the tower and the diameter of the wind rotor are increasing, which increases the risk of wind rotor blades being struck by lightning, especially in thunderstorm-prone areas in southwest China. The traditional wind turbine blade lightning protection system mostly adopts the method of arranging metal flash points grounded through wires at the fixed points of the blade tip and blade body to prevent the blade from being struck by lightning. This traditional lightning protection method has the disadvantages of poor lightning reception effect and small lightning protecti...

AI Technical Summary

Problems solved by technology

This traditional lightning protection method has the disadvantages of poor lightning reception effect and small lightning protection, but it can basically meet the lightning protection requirements of general all-glass fiber reinforced composite wind rotor blades.

[0003] Large MW (3MW and above) wind turbines mostly use carbon fiber reinforced composite materials to make the main beam of the wind rotor blades. Compared with carbon fiber reinforced composite materials, the electrical conductivity is significantly better than that of glass fiber reinforced composite materials. Traditional lightning protection devices can no longer meet this requirement. Lightning protection requirements for blades

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