Lightning indirect effect of radar antenna integrated lightning rod system
An electromagnetic simulation model of the radar antenna system integrated with lightning rod is estab-lished here for studying the lightning induction coupling characteristics of the system.The distribution characteristics of the lightning transient electromagnetic field of the system were studied.The lightning induced voltage and current of different cables inside the antenna system is analyzed by conducting experiments.The results show that the lightning transient electro-magnetic field beneath the internal surface of the system is relatively large and decays rapidly toward the center.The shield-ing effect of the antenna array with grid structure is better than that of the antenna array with strip structure.When the an-tenna system is powered,the cable induced voltage is greater than that when the antenna system is powered off.When the cable is tightly attached to the inner wall of the antenna system,the induced voltage is reduced by 48.1％,68.9％,and 90.7％,compared to the induced voltage when the cable is suspended.The relevant research results can provide reference for the lightning protection design of the radar antenna system integrated with lightning rod.
radar antennaelectromagnetic field distributioncable inductionlightning protection
NETL
NSTL
万方数据
