A method for reducing lightning disasters applicable to wind turbines

A technology for wind turbines and lightning disasters, applied in wind power generation, wind turbines, motors, etc., can solve the problems of poor overvoltage tolerance, sensitivity to electromagnetic interference, low insulation strength, etc., to achieve high economic efficiency, short construction period, Wide range of effects

CN105736257BActive Publication Date: 2018-08-14吉林市简通电气科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-08-14

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Patent Text Reader

Abstract

The invention discloses a method suitable for a wind generation set to reduce lightning disasters. Metal in a radial conductive needle shape or coatings in a radial conductive needle shape are mounted on the upper portions of the double faces of a paddle of the wind generation set, and the metal or coatings are in series connection with air core inductors or magnetic core inductors, high-voltage diodes and a lightning conductor in the paddle of the wind generation set; the discharge speed of the lightning current slows down through the air core inductors or magnetic core inductors, and induction currents generated by electrical equipment and the number of channels transmitting charges in the direction from the ground to the paddle through the high-voltage diodes can be reduced; and on the contrary, conduction between the lightning current and the ground through the metal in the radial conductive needle shape is obstructed. The method suitable for the wind generation set to reduce the lightning disasters can reduce the probability that wind generation set equipment is damaged by lightning strokes to the maximum extent, and safe and reliable running of the electrical equipment can be ensured.
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Description

technical field

[0001] The invention relates to a method for reducing lightning disasters suitable for wind turbines. Background technique

[0002] When a lightning strike occurs, the peak value of the lightning current can reach hundreds of kiloamperes, and a powerful electromagnetic pulse is generated. The transient overvoltage of lightning interference includes two parts: one is the overvoltage entering the equipment through connecting external lines; the other is the overvoltage generated inside the electronic equipment due to lightning electromagnetic coupling.

[0003] At present, the method of releasing lightning energy through lightning rods is adopted to prevent lightning strikes in nature. Its principle is to lead lightning and itself. This principle can be applied to buildings. However, many industrial equipment operating in the natural environment cannot cause lightning to itself, such as wind turbines, power transmission lines, and computer technology, aerospac...

Examples

Embodiment Construction

[0015] Such as Figure 1-Figure 3 As shown, a method for reducing lightning disasters applicable to wind turbines, including radial conductive needle-shaped metal or radial conductive needle-shaped coating 2 on the wind turbine blades 1, and combined with air-core inductors or magnetic core inductors 4, high voltage The diode 7 is connected in series with the lightning conductor 6 in the blade 1 of the wind turbine. The method described above is suitable for wind turbines to reduce lightning disasters and is applicable to wind turbines of different capacities. A voltage equalizing ring 5 is also arranged on the lightning conductor 6 . A connecting point 3 is provided at the bottom of the metal in the shape of radial conductive pins or the coating 2 in the shape of radial conductive pins, and the connecting points 3 are connected to the ground wire.

[0016] The beneficial effects of the present invention are: the shape and weight of the blades are not affected during use, and...