论文类型：
期刊论文
第一作者：
Li, Hongyue
通讯作者：
Li, C (reprint author), Dalian Univ Technol, Sch Phys, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China.
合写作者：
Wu, Xingwei,Li, Cong,Wang, Yong,Wu, Ding,Liu, Jiamin,Feng, Chunlei,Ding, Hongbin
发表时间：
2019-07-01
发表刊物：
PLASMA SCIENCE & TECHNOLOGY
收录刊物：
EI、SCIE
文献类型：
J
卷号：
21
期号：
7
ISSN号：
1009-0630
关键字：
optical emission spectroscopy; partial discharge; SF6-insulated
equipment; spatial and temporal evolution
摘要：
The study of sulfur hexafluoride (SF6) discharge is vital for its application in gas-insulated equipment. Direct current partial discharge (PD) may cause SF6 decomposition, and the decomposed products of SF6, such as F atoms, play a dominant role in the breakdown of insulation systems. In this study, the PD caused by metal protrusion defects is simulated by a needle-plate electrode using pulsed high voltage in SF6/Ar mixtures. The spatial and temporal characteristics of SF6/Ar plasma are analyzed by measuring the emission spectra of F and Ar atoms, which are important for understanding the characteristics of PD. The spatial resolved results show that both F and Ar atom spectral intensities increase first from the plate anode to the needle and then decrease under the conditions of a background pressure of 400 Pa, peak voltage of -1000 V, frequency of 2 kHz, pulse width of 60 mu s, and electrode gap of 5-9 mm. However, the distribution characteristics of F and Ar are significantly different. The temporal distribution results show that the spectral intensity of Ar decreases first and then increases slowly, while the spectral intensity of F increases slowly for the duration of the pulsed discharge at the electrode gap of 5 mm and the pulse width of 40-80 mu s.
是否译文：
否
