Performance Analysis of a Domestic Crosslinked Polyethylene Insulating Material for 500 kV Power Cable

doi:10.11930/j.issn.1004-9649.202210100

Abstract

Abstract: The applicability of a new domestic super clean XLPE insulating material for 500 kV AC cables is discussed. Firstly, the similarities and differences between domestic and imported base resins in molecular weight and chain structure are analyzed. Furthermore, the electrical, thermal and mechanical properties of the domestic XLPE is studied and compared with those of two imported XLPE. It is found that the three materials have similar properties and all meet the requirements for 500 kV cables. Finally, based on the molecular chain structure of the base resin, it is concluded that the introduction of more terminal double bonds in the base resin to improve crosslinking efficiency may be one of the directions for the subsequent improvement of domestic insulating materials.

Key words: crosslinked polyethylene, AC cable, localization, crosslink, terminal double bond

YAN Hongda, LI Wenpeng, ZHANG Chong, SUI Rui, LI Fei, HE Lin, ZHONG Lisheng. Performance Analysis of a Domestic Crosslinked Polyethylene Insulating Material for 500 kV Power Cable[J]. Electric Power, 2023, 56(2): 86-92.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202210100

https://www.electricpower.com.cn/EN/Y2023/V56/I2/86

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