LIGHTNING CONDUCTION METHOD AND LIGHTNING CONDUCTION DEVICE FOR WINDMILL BLADE, LIGHTNING PROTECTION METHOD AND LIGHTING PROTECTION DEVICE FOR WIND POWER GENERATION DEVICE

摘要

PROBLEM TO BE SOLVED: To quickly guide current of lightning striking a part other than a lightning receiving part of a windmill blade to the lightning receiving part.

SOLUTION: In this lightning conduction method for a windmill blade providing the lightning receiving part 12 made of conductive material (metal material) on a predetermined position of the windmill blade 11 and guiding lightning current striking the windmill blade 11 to the lightning receiving part, one or more of dielectric devices 21-24 having a plurality of conductive segments 25 composed of conductive material with a predetermined interval and putting dielectric layer therebetween are arranged on a surface of the windmill blade 11 between the lightning receiving part 12 and a predetermined section or a plurality of sections separate from the lightning receiving part 12, electric discharge is induced between the conductive segments 25 by an electric field applied by electric charge of thunder cloud, and lightening current striking the windmill blade 11 is guided to the lightning receiving part 12 through ionized layer of atmospheric air generated near the arranged conductive segments by the electric discharge.

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