HF-reignition phenomena related to post-arc current in vacuum interrupters
HF-reignition phenomena related to post-arc current in vacuum interrupters
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DOI：
10.1117/12.174642
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发表时间：
1994-05
期刊：
影响因子：
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通讯作者：
R. Smeets;Honqun Li;N. Lamerichs;E. Kaneko
中科院分区：
文献类型：
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作者：
R. Smeets;Honqun Li;N. Lamerichs;E. Kaneko
真空电弧中断高频 (hf) 电流后，可以观察到两种不同类型的重燃。第一种类型在中断后立即发生，第二种类型往往允许零点几微秒的无电流暂停。测量了高频电流中断后流过的弧后电流，其峰值为数 A，衰减时间为数百 ns。高频电流中断后衰变等离子体的动态鞘层模型已成功用于对测量的弧后电流波形进行建模。第一种类型的重燃可能归因于尚未形成离子鞘层期间的热应力，第二种类型归因于高电场，或者由于离子鞘层，或者由于TRV，每个的权重取决于间隙长度和di/dt。
After interruption of a high-frequency (hf) current by a vacuum arc, two distinct types of reignition can be observed. The first type follows immediately after interruption, the second type tends to allow a currentless pause of a few tenths of a microsecond. The post-arc current that flows after hf-current interruption has been measured and has a peak of several A and a decay time of a several hundreds of ns. A dynamic sheath model for the decaying plasma after hf current interruption has been used successfully to model the measured post-arc current waveshapes. The first type of reignition may be attributed to thermal stress during the period in which no ion sheath has been formed yet, the second type to high electric fields, either due to the ion sheath, or due to the TRV, the weight of each depending on gaplength and di/dt.