EXPERIMENTAL STUDY for WIND TURBINE BLADES LIGHTNING PROTECTION

Various lightning protection measures are used for the wind turbine blade. Although in a lot of wind turbines, lightning protection measures which consist of lightning attachment points and down-conductors for allowing lightning current to flow to the earth safely are generally adopted, the influences of shape and the size etc. of the receptor on the effect of the lightning protection are slightly reported. In this paper, the results of the high voltage impulse tests to understand the difference of manner of lightning attachment are reported. Actual 29.5m length wind turbine blades are used for some tests.