Transient Induced Response on Cables by Lightning Electromagnetic Pulse with Different Experimental Conditions

Chakhung Yeung,Jianguo Wang,Mi Zhou,Jinxin Cao,Yuxuan Ding,Li Cai,Yadong Fan, Quan Zhou,Jianping Wang,Weihan Zhao

Electric Power Systems Research（2025）SCI 3区

Hong Kong Polytech Univ | Wuhan Univ

Cited 0|Views6

Abstract

The coupling of lightning electromagnetic pulse (LEMP) on cables can generate disruptive surge current and voltage, which may cause damage to devices or systems connected with cables. In this paper, a double toroidal magnetic field, through injection of an 8/20 mu s lightning current into a double toroidal coil, is generated to induce indirect effects on nine communication/electrical cables. The impacts of different types and shielding methods of communication cables on induced surge current are evaluated, and the results show that twisted-pair cables with shielding layer have the best shielding effectiveness, with the ability to absorb more energy on the communication cables from LEMP. In addition, the study's findings demonstrate that the induction properties of cables are independent of the number of cores, but related to the shielding layer of cables. Meanwhile, simulation analysis in CST Studio Suite is carried out here, and results are basically similar to experimental results, with the difference attributed to the ignorance of some losses in the simulation environment. Finally, the magnetic field strength at each point of the LEMP is simulated, with some engineering proposals for the actual and simulated experiments.

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Key words

Cable,Lightning electromagnetic pulse,Magnetic field,Energy of coupling,Numerical simulation

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