The lightning protection method using pre-phenomena prior to the lightning hitting to a windmill

我们发现，在雷击风力发电机组及其保护塔之前，发生了三种前兆现象。第一种是预电流，其大小为几安培，在向上闪电开始之前流动几秒钟。第二个是风力机叶片尖端的预光发射，与几米距离上的不连续进气排放有关。最后一个是风车周围几公里范围内电场强度增大的现象。我们已经确认了使用预流预报闪电的可能性。

We have found the occurrence of three pre-phenomena immediately prior to the lightning hitting to a wind mill and its protection tower. The first one is the pre-current with a magnitude of several amperes which flow for a few seconds before the initiation of an upward lightning. The second one is the pre-light-emission from the tip of the wind turbine blade associated with an un-continuous progressing discharge over a distance of several meters. The last one is the phenomenon of increasing electric field strength in the area of several kilometers around the windmill. We have confirmed the possibility of forecasting lightning two seconds ahead using the pre-current.