Study on the Influence of Switching Impulse Superposition Phase on AC Partial Discharge of Epoxy Surface in SF6 Gas

被引：4
|
作者：
He, Cong [1 ]
Zhang, Liang [1 ]
Zhang, Xuanrui [1 ]
Li, Junhao [1 ]
Yao, Xiu [2 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China
[2] SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2020年 / 35卷 / 03期
关键词：
Surface partial discharge; epoxy insulation; SF6; AC and switching impulse superimposed voltage; LIGHTNING IMPULSE; INSULATION CHARACTERISTICS; TRANSFORMER;
D O I：
10.1109/TPWRD.2019.2941121
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this letter, a test platform capable of generating superimposed voltage with controllable phase is presented. Surface partial discharge(PD) of epoxy insulation was measured and analyzed in SF6. The applied voltage is AC and switching impulse superimposed voltage. Results show that only PD of the negative cycles of the AC voltage is excited or accelerated after impulse. With AC voltage at 90% of partial discharge inception voltage(PDIV), AC PDIV is reduced after imposing the switching impulse. When AC voltage is kept at 110% of PDIV, AC PDs are obviously promoted after impulse.
引用
收藏
页码：1596 / 1598
页数：3
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