XLPE/SiO<sub>2</sub>纳米复合材料长期直流老化特征寿命恶化分析

doi:10.19595/j.cnki.1000-6753.tces.L90101

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Abstract In order to study the long-term aging characteristics of XLPE/SiO₂ nano-composites under HVDC, a comparative study of pure XLPE and XLPE/SiO₂ nano-composites was conducted. First, aging experiments were performed on both materials at different DC electric fields. It was found that XLPE/SiO₂ nano-composites did have better electrical and life characteristics than pure XLPE at higher electric fields. However, with the decrease of the DC electric field, the lifetime of XLPE/SiO₂ nano-composites was getting closer to that of pure XLPE. Until the minimum electric field is 115kV/mm, the characteristic lifetime of XLPE/SiO₂ nano-composites was shorter than that of pure XLPE. Experimental studies further found that the life index of XLPE/SiO₂ nano-composites was lower than that of pure XLPE. Therefore, although XLPE/SiO₂ nano-composites composite showed excellent short-term electrical properties, the long-term DC aging property might not be better than that of pure XLPE.

Key words： XLPE/SiO₂ nano-composites DC aging characteristic lifetime inverse power law life index

Received: 27 June 2020

PACS:	TM215
	TM855

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	Articles by authors
	Lei Weiqun
	Liu Guanfang
	Geng Tao
	Wu Jiang
	Zheng Xiaoquan
	L.A. Dissado

Cite this article:

Lei Weiqun,Liu Guanfang,Geng Tao等. Analysis on the Characteristic Lifetime Deterioration of XLPE/SiO₂ Nano-Composites After Long-Term DC Aging[J]. Transactions of China Electrotechnical Society, 2022, 37(2): 311-321.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L90101 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I2/311

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