ガス絶縁変圧器ターン間絶縁モデルの急峻波領域における絶縁特性

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タイトル別名
  • Dielectric Characteristics of Turn-to-Turn Insulation Models of Gas-Insulated Transformer under Very Fast Transient Voltages
  • ガス ゼツエン ヘンアツキ ターンカン ゼツエン モデル ノ キュウシュンハ

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This paper deals with the partial discharge inception voltage (PDIV) and breakdown voltage (BDV) characteristics of turn-to-turn insulation models for SF6 gas-insulated transformers under steep front short pulse voltages, of which waveforms are 35/65 ns and 50/370 ns. It was found out that PDIV under nano-second pulses were 1.05_??_1.15 times higher than those under standard impulse voltages and BDV under nano-second pulses were about 1.4 times higher than those under standard impulse voltages. The ratio of impulse PDIV to ac PDIV is 1.40_??_1.48 for standard impulse voltages and 1.32_??_1.37 for switching impulses.

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