Locating lightning strikes and flashovers along overhead power transmission lines using electromagnetic time reversal

•A method to locate lightning strikes and lightning-induced flashovers is presented.•The method is based on the Electromagnetic Time Reversal Theory and uses single measurement point.•The performance of the method is evaluated for different simulation case studies.•A sensitivity analysis is carried...

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Bibliographic Details
Published in:Electric power systems research 2018-07, Vol.160, p.282-291
Main Authors: Razzaghi, R., Scatena, M., Sheshyekani, K., Paolone, M., Rachidi, F., Antonini, G.
Format: Article
Language:English
Subjects:
Computer simulation
Conductors
Disturbance location
Electrical grounding
Electricity distribution
Electromagnetic time reversal
Electromagnetic transients
Electromagnetism
Flashover
Lightning
Lightning flashovers
Lightning strikes
Mathematical models
Power lines
Power system protection
Shielding
Simulation
Surge arresters
Time
Topology
Transformers
Transmission lines
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Summary:•A method to locate lightning strikes and lightning-induced flashovers is presented.•The method is based on the Electromagnetic Time Reversal Theory and uses single measurement point.•The performance of the method is evaluated for different simulation case studies.•A sensitivity analysis is carried out with respect to various parameters and computational models. The paper presents a method to identify the location of direct lightning strikes to overhead transmission lines and potential subsequent flashover(s). The method is based on the electromagnetic time reversal theory and relies on the use of a single measurement point to record voltage transient signals originated by a direct lightning strike either on the phase conductors or shielding wires, and possible flashovers. The measurement system is supposed to be installed on the secondary winding of the transformer located at the line feeding substation. The performance of the proposed method, applicable for different power network topologies, is validated by using different numerical simulations applied to various case studies. The paper also discusses the impact of the grounding system model, high-frequency transformer model, presence of surge arresters as well as soil electrical parameters.
ISSN:0378-7796
1873-2046
DOI:10.1016/j.epsr.2018.03.012