Streamer Propagation in a Long Gap in Model Liquids
DOI :
https://doi.org/10.5324/nordis.v0i23.2463Résumé
A summary of streamer propagation in Exxsol-D140 and Marcol-52 under various experimental conditions is given. The results are compared to those of cyclohexane and mineral transformer oil. Streamer propagation is polarity and liquid dependent. The breakdown and acceleration voltages are also governed by liquid chemistry. Reduced pressure largely enhances streamer propagation of both polarities. A low ionization potential additive significantly affects positive streamers while an electron scavenger markedly impacts negative streamers. Adding a low ionization potential additive caused positive streamers to behave like those in mineral transformer oil while adding an electron scavenger had the same influence on negative streamers. Processes at the streamer heads are suggested to be responsible for streamer propagation.
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