Space Charge Dynamics in Epoxy Resins Under the Influence of a Long-Term High Electric Field at Various Temperatures | |
Zhang, Hongliang2; Li, Kun2; Jin, Hai2; Li, Kangle2; Li, Xiaonan2; Liu, Peng1; Peng, Zongren1 | |
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). |
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