Abstract
High-altitude electromagnetic pulse (HEMP) has the characteristics of high peak value, wide coverage and wide spectrum, which can destroy a lot of power electronic equipment, thus leading to system failure. Therefore, it is of great significance to study the system-level vulnerability of HEMP. In this paper, a vulnerability analysis method combining electromagnetic topology (EMT) and fault tree (FT) is proposed. In this qualitative analysis, the coupling relationship between HEMP and each component is presented, and the system fault model under HEMP is established based on the EMT and FT. The Taylor model of the transmission line is used to calculate the terminal induced current response. Combined with the vulnerability curve of components, the vulnerability of the system fault model under HEMP is analyzed by Monte Carlo methods. The proposed method is used to simulate the microcontroller system, and the simulation results show that the proposed method is feasible and effective.
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