Investigation of pulsed breakdown characteristics in high-pressure CO<inf>2</inf> including supercritical phase under non-uniform electric field
Investigation of pulsed breakdown characteristics in high-pressure CO<inf>2</inf> including supercritical phase under non-uniform electric field
复制标题
非均匀电场下高压CO<inf>2</inf>（含超临界相）脉冲击穿特性研究
DOI：
10.1109/icdl.2017.8124619
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Kiyan T.
中科院分区：
文献类型：
--
作者：
Kamagahara T.;Ashizuka N.;Furusato T.;Fujishima T.;Yamashita T.;Sasaki M.;Kiyan T.
本文研究了正极性纳秒脉冲击穿电压对气体到超临界（SC）相co2密度的依赖性。在所有实验条件下，针面电极均施加等效电压上升速率为0.75 kV/ns的脉冲电压。此外，用劳埃图研究了高压气相和SC相下火花的时滞。结果表明：1)气相击穿电压升高，SC相击穿电压饱和；2)击穿电压局部降低，在中密度为90.8 kg/m3（气相）时尤为明显；3)在高压气相（82.1 ~ 103.1 kg/m3）中，无论形成时滞恒定，统计滞后都很小，为90.8 kg/m3；4) SC阶段的形成滞后和统计滞后难以量化。
In this paper, dependence of positive polarity nanosecond pulsed breakdown voltage on CO2density was examined from gas to supercritical (SC) phases. The pulsed voltage with equivalent voltage rise rate (0.75 kV/ns) was applied to needle-to-plane electrode in all experimental conditions. In addition, the time lag of spark at high pressure gas and SC phases were investigated with Laue plots. The obtained results were as follows: 1) the breakdown voltage increased in gas phase and saturated in SC phase; 2) the local reduction of breakdown voltage specifically appeared at medium density of 90.8 kg/m3(gas phase); 3) in the high pressure gas phase (82.1-103.1 kg/m3), the statistical time lag was extremely small at 90.8 kg/m3irrespective of constant formative time lag; 4) it was difficult to quantify the formative and the statistical time lags in SC phase.