Space Charge Dynamics in Epoxy Resins Under the Influence of a Long-Term High Electric Field at Various Temperatures

doi:10.3389/fchem.2022.904750

	Space Charge Dynamics in Epoxy Resins Under the Influence of a Long-Term High Electric Field at Various Temperatures
	Zhang, Hongliang 2; Li, Kun 2; Jin, Hai 2; Li, Kangle 2; Li, Xiaonan 2; Liu, Peng 1; Peng, Zongren 1
刊名	FRONTIERS IN CHEMISTRY
	2022-06-15
卷号	10
关键词	space charge epoxy resin long term temperature bushing
ISSN号	2296-2646
DOI	10.3389/fchem.2022.904750
英文摘要	As the main insulating material of an ultra-high voltage (UHV) resin impregnated paper (RIP) bushing, epoxy resin accumulates space charge under the DC voltage, which would affect the insulation properties of the bushing. In this article, the evolution of space charge accumulation and dissipation within the epoxy resin samples was measured under the influence of a long-term (24 h) electric field of 60 kV/mm at 40 degrees, 60 degrees, 80 degrees, and 100 degrees C. The experimental results show that the space charge transport in the epoxy sample was a long-time dynamic process. When the temperature was not greater than 60 degrees C, only homocharge accumulation was observed within the samples, and the space charge distribution did not reach a stable state even after 24 h of voltage application. When the temperature was not lower than 80 degrees C, the positive heterocharge accumulation was observed at the interface between cathode and epoxy. Through analysis by fitting and numerical simulation, it was verified that the positive heterocharge accumulation was caused by the limitation of the hole extraction, and the transport of holes within the samples obeyed the jump conductance model.
WOS研究方向	Chemistry
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000817968800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158875]
专题	电气工程与信息工程学院
作者单位	1.Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xi'an, Peoples R China 2.Lanzhou Univ Technol, Coll Elect Engn & Informat Engn, Lanzhou, Peoples R China;
推荐引用方式 GB/T 7714	Zhang, Hongliang,Li, Kun,Jin, Hai,et al. Space Charge Dynamics in Epoxy Resins Under the Influence of a Long-Term High Electric Field at Various Temperatures[J]. FRONTIERS IN CHEMISTRY,2022,10.
APA	Zhang, Hongliang.,Li, Kun.,Jin, Hai.,Li, Kangle.,Li, Xiaonan.,...&Peng, Zongren.(2022).Space Charge Dynamics in Epoxy Resins Under the Influence of a Long-Term High Electric Field at Various Temperatures.FRONTIERS IN CHEMISTRY,10.
MLA	Zhang, Hongliang,et al."Space Charge Dynamics in Epoxy Resins Under the Influence of a Long-Term High Electric Field at Various Temperatures".FRONTIERS IN CHEMISTRY 10(2022).