Understanding the Crystalline Region Damage Mechanism of XLPE in Water Tree Propagation by Erosion Method

doi:10.1109/TDEI.2021.009678

	Understanding the Crystalline Region Damage Mechanism of XLPE in Water Tree Propagation by Erosion Method
	Li, Kangle 1; Zhou, Kai 2; Zhang, Hongliang1 ; Jin, Hai1 ; Li, Xiaonan 1
	2021-12
发表期刊	IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
ISSN	1070-9878
卷号	28 期号:6 页码:2074-2082
摘要	This study investigates the damage characteristics and mechanism of the crystalline regions of cross-linked polyethylene (XLPE) in water tree propagation. XLPE cable samples are subjected to an accelerated water tree aging at a voltage of 7.5 kV/400 Hz for 240, 480 and 720 hours. After the water tree aging, the crystalline structural changes of the water tree samples are observed by X-ray diffraction (XRD). In addition, the water tree samples are eroded and the morphologies of the crystalline regions in water tree regions are observed by a scanning electron microscope (SEM). The XRD results show that the crystallinities of the aged samples decrease with aging, especially after 240 hours. The SEM results show that after 240 hours of aging, slip lines and dislocation steps emerge on the fracture surfaces. After 480 hours, microcracks with sizes of several micrometers are observed in the directions of the crystal faces. After 720 hours, conical dislocation pits appear in the samples and there are microvoids at the bottoms of the pits. Based on the XRD and SEM results, it is concluded that the crystalline regions of XLPE are damaged in the water tree aging. At last, the initiation process of the dislocations and the damage characteristics of the crystalline regions in the water tree propagation are discussed.
关键词	XLPE water tree crystalline region damage dislocations
DOI	10.1109/TDEI.2021.009678
收录类别	SCIE
语种	英语
WOS研究方向	Engineering ; Physics
WOS类目	Engineering, Electrical & Electronic ; Physics, Applied
WOS记录号	WOS:000742182400036
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
来源库	WOS
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/154961
专题	电气工程与信息工程学院
通讯作者	Li, Kangle
作者单位	1.Lanzhou Univ Technol, Coll Elect Engn & Informat Engn, Lanzhou, Peoples R China; 2.Sichuan Univ, Coll Elect Engn, Chengdu, Peoples R China
第一作者单位	电气工程与信息工程学院
通讯作者单位	电气工程与信息工程学院
第一作者的第一单位	电气工程与信息工程学院
推荐引用方式 GB/T 7714	Li, Kangle,Zhou, Kai,Zhang, Hongliang,et al. Understanding the Crystalline Region Damage Mechanism of XLPE in Water Tree Propagation by Erosion Method[J]. IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION,2021,28(6):2074-2082.
APA	Li, Kangle,Zhou, Kai,Zhang, Hongliang,Jin, Hai,&Li, Xiaonan.(2021).Understanding the Crystalline Region Damage Mechanism of XLPE in Water Tree Propagation by Erosion Method.IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION,28(6),2074-2082.
MLA	Li, Kangle,et al."Understanding the Crystalline Region Damage Mechanism of XLPE in Water Tree Propagation by Erosion Method".IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION 28.6(2021):2074-2082.

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