防雷保护设计问题分析和探讨

Analysis and Discussion on Lightning Protection Design

根据雷电对人体所引起的心室纤维性颤动最小能量数值,并结合人体在潮湿情况下的电阻变化范围,通过计算得到最小单位能量数值。根据雷电流的参数和分配原则,结合单位能量与雷电流之间的关系,可以估算出此时雷电流的数值,并由此估算出防雷装置多根引下线中一根所接受的雷电流数值的大小,为防雷设计提供一定的理论基础,以防止雷击对相关工作人员的伤害。

According to minimum energy value of ventricular fibrillation caused by lightning hazard to human body,and combining the resistance variation range of human body in humid condition,the minimal specific energy value is obtained through calculation.According to lightning current parameters and distribution principle,combining the relationship between specific energy and lightning current,the value of lightning current at present can be estimated.Combining the result,the value of lightning current accepted by one of the down conductors of lightning protection device can be estimated.It provides a theoretical basis for lightning protection design to prevent the injury of lightning strike to relevant operators.