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首页> 外文会议>International Conference on Lightning Protection >A positive lightning discharge that caused severe damage to the blade of a windmill
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A positive lightning discharge that caused severe damage to the blade of a windmill

机译：积极的闪电放电，对风车刀片产生严重损坏

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摘要

The optical progression characteristics of an upward connecting negative leader and a downward positive dart leader contained in a positive lightning discharge that hit on the blade tip of a windmill have been reported. The pulse discharges in the negative leader are found to propagate backward usually with a distance of a few tens of meters. Their propagation speeds tend to be around 1.0×108 m/s initially and soon drop to a stable value of about 2.0×107 m/s. The downward positive dart leader also exhibited a speed of about 2.0×107 m/s. The plasma formed on the windmill blade tip by the lightning tends to be much brighter than the free space lightning channel.
机译：已经报道了向上连接的负极领导的光学进展特性和包含在风车叶片尖端的正闪电放电中的向上闪电放电的向下阳性达顿头部。发现负极领导中的脉冲放电通常以几十米的距离向后传播。最初，它们的传播速度倾向于1.0×108 m / s，即将下降到约2.0×107m / s的稳定值。向下阳性飞镖领导人也表现出约2.0×107米/秒的速度。通过闪电在风车刀片尖端上形成的等离子体倾向于比自由空间雷电通道更亮。

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