HVDC Surface Flashover in Compressed Air for Various Dielectrics
IEEE transactions on dielectrics and electrical insulation(2020)
摘要
This study measures the voltage at which flashover occurs in compressed air for a variety of dielectric materials and lengths in a uniform field for DC voltages up to 100 kV. Statistical time lag is recorded and characterized, displaying a roughly exponential dependence on breakdown voltage. Of the materials tested, acrylic is observed to be the most resistant to flashover. These data are intended to facilitate the design of compressed-air insulated high voltage systems as an alternative to SF6 insulated systems.
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关键词
Voltage measurement,Surface discharges,Sulfur hexafluoride,Flashover,Surface charging,Threshold voltage,Surface finishing,flashover,HVDC insulation
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