Measurement of lightning current at wind turbine near coast of Sea of Japan in winter

The authors have carried out measurement of the current waveforms associated with lightning strokes to wind turbines at the coast of the Sea of Japan in Tohoku. In this paper measured waveforms on winter in 2014 to 2015 are reported and the initial continuous current (ICC), typical in the cases of lightning flash initiated by upward propagating leaders. The result is of practical importance for the lightning protection design of the wind turbine and the linkage distribution line on the wind farm.