The paper presents a method to locate flashovers resulting from direct lightning strikes to overhead transmission lines. The method exploits the electromagnetic time-reversal theory and uses the cross-correlation between the flashover-originated transient current observed in the direct time and the transverse branch currents in the reversed time at the guessed flashover locations as a similarity metric to identify the location of the flashover. The performance of the similarity metric is numerically illustrated using two simulation case studies associated with a shielding failure and a back-flashover.
Using Electromagnetic Time Reversal Similarity Metric to Locate Lightning-Originated Flashovers on Overhead Transmission Lines / Wang Z.; Gerini F.; Paolone M.; Nucci C.A.; Rachidi F.. - ELETTRONICO. - (2019), pp. 8951737.1-8951737.6. (Intervento presentato al convegno 15th International Symposium on Lightning Protection, SIPDA 2019 tenutosi a Institute of Energy and Environment - IEE/USP, Avenida Professor Luciano Gualberto, 1289, Cidade Universitaria, bra nel 2019) [10.1109/SIPDA47030.2019.8951737].
Using Electromagnetic Time Reversal Similarity Metric to Locate Lightning-Originated Flashovers on Overhead Transmission Lines
Nucci C. A.;
2019
Abstract
The paper presents a method to locate flashovers resulting from direct lightning strikes to overhead transmission lines. The method exploits the electromagnetic time-reversal theory and uses the cross-correlation between the flashover-originated transient current observed in the direct time and the transverse branch currents in the reversed time at the guessed flashover locations as a similarity metric to identify the location of the flashover. The performance of the similarity metric is numerically illustrated using two simulation case studies associated with a shielding failure and a back-flashover.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
