考虑喷口烧蚀影响的高压断路器电弧仿真(英文)

被引：17

作者：

JIANG Xu ^{[1
]}

ZHONG Jianying ^{[2
]}

ZHANG Youpeng ^{[2
]}

ZHANG Gaochao ^{[2
]}

LI Xingwen ^{[1
]}

JIA Shenli ^{[1
]}

机构：

[1] State Key Laboratory of Electrical Insulation and Power Equipment,Xi'an Jiaotong University

[2] Henan Pinggao Electric Co,Ltd

来源：

高电压技术 | 2013年 / 39卷 / 04期

关键词：

D O I：

暂无

中图分类号：

TM561 [断路器];

学科分类号：

080508 [光电信息材料与器件];

摘要：

In order to investigate the influence of nozzle ablation to arc,a 2-D axisymmetric magneto-hydro-dynamics arc model is developed to simulate the arc behavior during the whole interruption process in a puffer-type high voltage circuit breaker,considering the nozzle ablating and the mixing process of Polytetrafluoroethylene(PTFE) vapor with SF6.The results show that the arc radius firstly increases and then decreases as arc current varies according to its sinusoida waveform.At 3.5 ms after arc initiation the nozzle ablation starts,and 2.5 ms later the current nearly reaches its peak value and nozzle ablation develops intensely.Meanwhile the nozzle is blocked by arc at this time and consequently the vapor concentration in nozzle reaches the highest.Then while the current decreasing and open distance increaseing the vapor concentration gradually decreases.Before current zero the extinction peak of arc voltage occurs.It indicates that the PTFE vapor enhances pressure rise in arc quenching chamber and strengthens the arc blocking effect on nozzle;the arc radius is wider and arc temperature is lower when nozzle ablation is considered.

引用

页码：827 / 832

页数：6

共 8 条

[1]

SF6新气痕量杂质对SF6电气设备寿命的影响 [J].