南方电网技术2026，Vol.20Issue(5)：10-20,11.DOI:10.13648/j.cnki.issn1674-0629.2026.05.002
强电磁脉冲环境下典型一次设备耦合特性仿真
Simulation on Coupling Characteristics of Typical Primary Equipment in Strong Electromagnetic Pulse Environment
摘要
Abstract
A strong electromagnetic pulse(EMP)has a short rise time and high peak field strength,propagating to electrical equip-ment through strong coupling with cables,thereby causing damage.To investigate the coupling effect of strong EMPs on primary equipment,a conductive EMP environment is established,and equivalent circuit models for zinc oxide surge arresters,glass insula-tors,and distribution transformers are constructed.Through simulation,the port voltages and currents of each device under strong EMP conditions are obtained.The results indicate that when the terminal voltage waveform generated by the coupling of strong EMPs with overhead lines enters typical primary equipment,the voltages and currents of the surge arrester,insulator,and transformer remain as pulse waveforms when a protective resistor is connected at the port.However,the leading edge becomes slower,and the pulse width increases.Without a protective resistor,streamers form on the surface of the insulator string after flashover,causing the equivalent impedance to shift from capacitive to inductive,leading to sustained oscillations in the ground current.During flashover,the voltage and current amplitudes rapidly decrease.The transformer's port voltage and ground current without a protective resistor both exhibit oscillatory waveforms,gradually decaying to zero.关键词
强电磁脉冲/架空线耦合/传导环境/一次设备/宽频等效电路Key words
HEMP/overhead line coupling/conduction environment/primary equipment/broadband equivalent circuit分类
信息技术与安全科学引用本文复制引用
夏小飞,潘锐健,刘磊,俸波,李斌,祁汭晗,黎大健,冯瑞发,张磊,李敏..强电磁脉冲环境下典型一次设备耦合特性仿真[J].南方电网技术,2026,20(5):10-20,11.基金项目
国家自然科学基金联合基金资助项目(U23B20132) （U23B20132）
广西电网有限责任公司科技项目(GXKJXM20210264). Supported by the Joint Fund of National Natural Science Foundation of China(U23B20132) （GXKJXM20210264）
the Science and Technology Project of Guangxi Power Grid Co.,Ltd.(GXKJXM20210264). （GXKJXM20210264）
