New static airarc EMTP model of long arc in free air

Vladimir Terzija, Gary Preston, Marjan Popov, Natasa Terzija

    Research output: Contribution to journalArticlepeer-review


    In this paper, long arcs in free air are investigated. A long arc was induced in the high-power test laboratory at FGH-Mannheim, Germany. From the recorded arc data, the features of the arc were derived and analyzed, including elongation effects associated with these arcs. Based on this analysis of a real arc, a new AirArc static arc model, including the length variations, was derived and incorporated into the Alternate Transients ProgramElectromagnetic Transients Program software package in which it was simulated. The arc is modeled as a current-dependent voltage source with a characteristic-distorted rectangular voltage that elongates nonlinearly over time. Fault arcs are a significant source of harmonics that distort other voltages and currents in the network. The time-domain and spectral-domain features of the simulated arc are compared with those of the real arc. The assessment of transient processes during arcing faults was carried out using the discrete wavelet transform. © 2011 IEEE.
    Original languageEnglish
    Article number5743047
    Pages (from-to)1344-1353
    Number of pages9
    JournalIEEE Transactions on Power Delivery
    Issue number3
    Publication statusPublished - Jul 2011


    • Arc length
    • distortions
    • Electromagnetic Transients Program (EMTP)
    • laboratory testing
    • long arc in free air
    • modeling
    • simulation
    • spectral analysis
    • wavelets analysis


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