An efficient time-domain method for the electromagnetic transient response of multiconductor transmission lines excited by an electromagnetic field

Abstract

An efficient time-domain method based on the waveform relaxation with transverse partitioning (WR-TP) techniques and the delay extraction passive compact circuit (DEPACT) macromodel is presented for evaluating the electromagnetic (EM) transient response of multiconductor transmission lines (MTLs) excited by an external EM field. Firstly, the equivalent distributed sources due to the tangential components of the electric field are introduced into the MTLs equations. Then, the TLs are divided into a cascaded of DEPACT subnetworks, where the telegrapher’s equations of lossless TLs are decoupled by applying the WR-TP techniques. And the relaxation sources over the lossy TLs are updated by using the waveform scaling algorithm, which can completely avoid performing the numerical convolution. Finally, the equivalent circuit is established and the transient responses induced on the lines can be obtained by using the circuit simulation software PSCAD.

KEYWORDS:

• Waveform relaxation
• multiconductor transmission lines (MTLs)
• transient response
• DEPACT macromodel
• equivalent circuit

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Research Funds of Beijing Information Science & Technology University: [grant number 2025020].

Notes on contributors

Yanfei Gong

Yanfei Gong was born in Shandong, China, in 1987. He received the Ph.D. degree in electrical engineering from North China Electric Power University, Beijing, China, in 2019, where he is currently a Lecturer with the School of Information and Communication Engineering, Beijing Information Science and Technology University. His main research interests include electromagnetic pulse (EMP) interaction with transmission lines, electromagnetic shielding.

Xingtong Chen

Xingtong Chen was born in Jilin, China, in 1993. She received the B.S. degree in electrical engineering from North China Electric Power University, Baoding, China, in 2016, and the M.S. degree in electronic science and technology from North China Electric Power University, Beijing, China, in 2019. She is currently an engineer with the State Grid Energy Research Institute, Beijing, China. Her main research interests include Internet of energy, power electronic technology, and power system modeling.