The Physical Mechanism of Frequency-Induced Inflection Point for Oil-Paper Insulation Under High-Frequency Square-Wave Voltage

doi:10.1109/TPS.2022.3182551

CORC > 兰州理工大学 > 兰州理工大学

	The Physical Mechanism of Frequency-Induced Inflection Point for Oil-Paper Insulation Under High-Frequency Square-Wave Voltage
	Liu, Kai 2; Li, Xiaonan 1,2; Yang, Yan 2; Wu, Zihao 3; Liu, Tong 3; Zhu, Minghui 3; Wu, Guangning 2
刊名	IEEE TRANSACTIONS ON PLASMA SCIENCE
	2022-07-01
关键词	Frequency-induced inflection point high-frequency (HF) square wave Nomex paper oil-paper insulation partial discharge (PD)
ISSN号	0093-3813
DOI	10.1109/TPS.2022.3182551
英文摘要	High-frequency (HF) oil-immersed transformers with small size and light weight have been paid wide attention by researchers. Its oil-paper insulation frequently withstands HF over-voltages at frequencies of several kilohertz and above, resulting in the too early failure of oil-paper insulation. In order to investigate the effect of HF on oil-paper insulation, this article investigates the partial discharge (PD) characteristics of oil-paper insulation under HF stress. The experimental results show that a frequency-induced inflection point is existed near 10 kHz and the PD parameters of HF voltages is much higher than that ac voltages. Besides, the theoretical mechanism is expounded to interpret and understand the formation process of frequency-induced inflection points more easily. It can be found that the change in frequency causes the change in the charge decay time constant and the residual charge on the insulating surface, resulting in the formation of the frequency-induced inflection point at HE These results might contribute to determine the characteristics of PDs between HF voltages and ac voltages. It can provide references for the research and production of HF transformers.
WOS研究方向	Physics
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号	WOS:000824752500001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159470]
专题	兰州理工大学
作者单位	1.Lanzhou Univ Technol, Coll Elect & Informat Engn, Lanzhou 730050, Peoples R China; 2.Southwest Jiaotong Univ, Sch Elect Engn, Chengdu 610032, Peoples R China; 3.Elect Power Res Inst, State Grid Shaanxi Elect Power Co, Xian 710000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Kai,Li, Xiaonan,Yang, Yan,et al. The Physical Mechanism of Frequency-Induced Inflection Point for Oil-Paper Insulation Under High-Frequency Square-Wave Voltage[J]. IEEE TRANSACTIONS ON PLASMA SCIENCE,2022.
APA	Liu, Kai.,Li, Xiaonan.,Yang, Yan.,Wu, Zihao.,Liu, Tong.,...&Wu, Guangning.(2022).The Physical Mechanism of Frequency-Induced Inflection Point for Oil-Paper Insulation Under High-Frequency Square-Wave Voltage.IEEE TRANSACTIONS ON PLASMA SCIENCE.
MLA	Liu, Kai,et al."The Physical Mechanism of Frequency-Induced Inflection Point for Oil-Paper Insulation Under High-Frequency Square-Wave Voltage".IEEE TRANSACTIONS ON PLASMA SCIENCE (2022).