Reconstruction of the lightning channel current starting from electromagnetic fields measurements
The behavior of the lightning current along the channel is extremely important in the evaluation of the electromagnetic fields at various distances which may cause disturbances or faults on electric and electronic equipment. While the current at the channel-base can be measured by means of instrumented towers, the current attenuation and propagation along the channel is partially unknown. In this framework, several models have been developed based on the aim of reproducing the typical characteristics of the measured electromagnetic fields at various distances. In this lecture, another approach is proposed: the current attenuation is evaluated starting from the electromagnetic fields measurements. The process, based on the Tikhonov regularization technique that was derived to manage ill-posed problems, requires some preliminary analysis involving issues such as a suitable representation of the problem in the frequency-domain and the investigation on the minimum time window in which one has to sense both the channel base current and the fields to get a sufficient amount of information on the attenuation function.
Date and Time
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- Date: 04 May 2023
- Time: 12:00 PM UTC to 01:00 PM UTC
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- EPFL
- Lausanne , Switzerland
- Switzerland 1015
- Building: ELD 020
- Room Number: ELD 020
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- Co-sponsored by EMC Lab EPFL
- Starts 21 April 2023 08:33 PM UTC
- Ends 04 May 2023 12:33 PM UTC
- No Admission Charge
Speakers
Prof. Daniele Mestriner of University of Genoa
Biography:
Daniele Mestriner is currently an Assistant Professor at the University of Genoa. He has taken part in the Technical Committee of many international conferences and he works as Topic Editor for the journal “Applied Sciences”. His main interests include electromagnetic fields computation and lightning modeling. He is author or co-author of more than 50 scientific papers published in reviewed journals or presented in international conferences.
Prof. Renato Procopio of University of Genoa
Biography:
Renato Procopio (M’ 03, SM’17) is Associate Professor at the University of Genoa. He is co-author of the book ‘Microgrids Design and Operation: Towards Smart Energy in Cities”, Artech House, and of more than 150 papers published in international journals or presented at international conferences. He is editor of the international Journals Energies and Electrical and Computer Engineering (power system division), Guest Editor of the IEEE Transaction on EMC Special Section “Advances in Lightning Modeling, computation and measurement”, and of the EPSR Special Issue ““Lightning protection, physics and effects” and member of the IEEE Technical Committee 5 - High Power Electromagnetics. He was local chair of the 19th edition of the International Conference on Environment and Electrical Engineering EEEIC (Genoa 11-14 June 2019). He is recipient of the Emerald Literati Awards' Outstanding Paper accolade for the best paper published in the Electrical engineering journal COMPEL (2003) for the paper “A full-Maxwell algorithm for the field-to-multiconductor line-coupling problem”.