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| Content Provider | IET Digital Library |
|---|---|
| Author | Gong, Yanfei Hao, Jianhong Jiang, Luhang Liu, Qiang Zhou, Haijing |
| Abstract | An efficient field-to-line coupling model in the time domain is developed combining the second-order decoupled multiconductor transmission lines (MTLs) equations and the finite-element time-domain (FETD) method for evaluating the electromagnetic (EM) transient response of MTLs over a lossy ground excited by a high-altitude EM pulse (HEMP). First, the incident HEMP electric fields on the lines are calculated as equivalent distributed sources introduced into the MTLs equations. Then, the discrete FETD equations for the lines against the HEMP, in which the effect of frequency-dependent parameters caused by the ground impedance is considered, are derived using the FETD method with current as the single iteration variable. Finally, the transient currents induced on the lines are obtained by assembling all the discrete FETD equations into the global FETD equation, and the transient induced voltages on the lines are calculated by discretising the coupled equations with respect to current and voltage. The proposed model is successfully compared with the finite-difference time-domain method via several examples. It is then employed to analyse the effect of various parameters on the transient currents including the polarisation and the incident angles of the HEMP, the conductivity, and the relative permittivity of the soil. |
| Starting Page | 803 |
| Ending Page | 811 |
| Page Count | 9 |
| ISSN | 17518822 |
| Volume Number | 13 |
| e-ISSN | 17518830 |
| Issue Number | Issue 6, Aug (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-smt/13/6 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2018.5188 |
| Journal | IET Science, Measurement & Technology |
| Publisher Date | 2019-03-27 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Coupled Equation Discrete FETD Equation Efficient Field-to-line Coupling Model Electrical Conductivity Electromagnetic Transient Response EM Transient Current Equivalent Distributed Source FETD Method Finite Element Analysis Finite-element Time-domain Method Frequency-dependent Parameter Global FETD Equation Ground Impedance High-altitude EM Pulse Incident HEMP Electric Field Lossy Ground MTL Equation Multiconductor Transmission Line Photonic Technology Relative Permittivity Second-order Decoupled Multiconductor Transmission Line Equation Single Iteration Variable Soil Time Domain Analysis Transient Induced Voltage Transient Response Transmission Line Theory |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering |
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