Streamer and leader characterization in HFO1234ze(E) gas, in a divergent electric field

IF 1.1 Q3 PHYSICS, MULTIDISCIPLINARY
S. Soulié, N. Bonifaci, O. Lesaint, F. Gentils
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引用次数: 0

Abstract

Pre-breakdown phenomena in HFO1234ze-(E) gas, considered as a potential replacement of SF6 for medium voltage insulation, are studied in needle-plane electrode systems versus pressure (0.01 to 0.3 MPa) under positive impulse voltage. Measurements are also carried out in air and SF6 in the same conditions for comparison. At the lowest pressure in HFO, the propagation of fast streamers is observed. Above 0.03 MPa, breakdown is the consequence of the propagation of stepped leaders, with shapes and velocities nearly identical to those observed in SF6. Several leader features (minimum inception voltage, propagation length) show that leader formation and propagation is easier in HFO compared to SF6. In turn, this allow explaining why breakdown voltages in HFO are slightly lower than in SF6.
发散电场条件下HFO1234ze(E)气体中拖缆和引线的表征
在针平面电极系统中,研究了HFO1234ze-(E)气体在正脉冲电压下对压力(0.01至0.3MPa)的预击穿现象,该气体被认为是中压绝缘SF6的潜在替代品。在相同的条件下,也在空气和SF6中进行了测量以进行比较。在HFO的最低压力下,可以观察到快速拖缆的传播。在0.03MPa以上,击穿是阶梯状引线传播的结果,其形状和速度几乎与SF6中观察到的形状和速度相同。几个先导特征(最小起始电压、传播长度)表明,与SF6相比,HFO中的先导形成和传播更容易。反过来,这可以解释为什么HFO中的击穿电压略低于SF6。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Physics Communications
Journal of Physics Communications PHYSICS, MULTIDISCIPLINARY-
CiteScore
2.60
自引率
0.00%
发文量
114
审稿时长
10 weeks
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