Device for reducing thunder disaster for wind turbine generator

Abstract

The invention relates to a device for reducing thunder disaster for a wind turbine generator. The device comprises a wind turbine generator paddle and a lightning protection lead arranged in the wind turbine generator paddle, and is characterized in that multiple radial needle-shaped conductive wires or conductive layers are arranged on the upper part of both faces of the wind turbine generator paddle, and the multiple radial needle-shaped conductive wires or conductive layers are connected with the lightning protection lead in the wind turbine generator paddle through one connected conductive wire or conductive layer. Once thundercloud is caused by the wind turbine generator, a space charge distribution rule in a thundercloud electric field is distorted, so that the discharge voltage of the thunder on the wind turbine generator, the probability of damage of the wind turbine generator suffering under the lightning stroke is reduced furthest, and safe and reliable operation is ensured.

Description

technical field [0001] The invention relates to a lightning protection device, in particular to a lightning disaster reduction device for a wind turbine. Background technique [0002] Lightning (Lightning), also known as lightning, refers to the phenomenon of pulse discharges that occur inside charged clouds, between clouds, or between clouds and the ground, accompanied by strong flashes and loud noises. At present, my country adopts the method of releasing lightning energy through lightning rods to prevent lightning strikes in nature. This principle is mostly applied to buildings, and it is installed on the highest point of buildings. However, many industrial equipment operating under natural environmental conditions, such as power transmission lines, wind turbines, and high-tech computer and communication equipment, cannot induce lightning by themselves. The transient electromagnetic pulse (LEMP), excessive transient voltage and current will interfere with various electro...

AI Technical Summary

Problems solved by technology

Due to the low insulation strength and poor overvoltage tolerance of wind turbines, they are sensitive to electromagnetic interference. Once they are damaged by lightning electromagnetic interference, they may fail to work, or be permanently damaged, resulting in outage accidents.

Due to the obvious randomness of lightning phenomena, and the existing wind turbines cannot realize their own lightning induction, therefore, the wind turbines are often faulted or even damaged by lightning.

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