电工技术学报  2022, Vol. 37 Issue (2): 311-321    DOI: 10.19595/j.cnki.1000-6753.tces.L90101
电工理论 |
XLPE/SiO2纳米复合材料长期直流老化特征寿命恶化分析
雷伟群1, 刘冠芳1, 耿涛1, 乌江2, 郑晓泉3, L. A. Dissado4
1.中车永济电机有限公司轨道交通牵引电机山西省重点实验室 运城 044502;
2.西安工程大学电子信息学院 西安 710038;
3.电力设备电气绝缘国家重点实验室(西安交通大学) 西安 710049;
4.莱斯特大学工程学院 LE1 7RH 莱斯特
Analysis on the Characteristic Lifetime Deterioration of XLPE/SiO2 Nano-Composites After Long-Term DC Aging
Lei Weiqun1, Liu Guanfang1, Geng Tao1, Wu Jiang2, Zheng Xiaoquan3, L.A. Dissado4
1. Shanxi Provincial Key Laboratory of Traction Motor for Rail Transit CRRC Yongji Electric Co. Ltd Yuncheng 044502 China;
2. School of Electronics and Information Xi'an Polytechnic University Xi'an 710038 China;
3. State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an 710049 China;
4. Department of Engineering University of Leicester LE1 7RH Leicester U.K.
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摘要 为了研究纳米SiO2改性后的交联聚乙烯(XLPE)在直流电场下的长期老化规律,该文对纯XLPE和XLPE/SiO2纳米复合材料的老化性能进行对比研究。首先在不同直流电压下分别对两种材料进行老化实验,发现XLPE/SiO2纳米复合材料在电场较高时的确具有较纯XLPE更优异的耐电特性,但随着施加直流电场的降低,XLPE/SiO2纳米复合材料的特征寿命与纯XLPE的越来越接近,直到该文测试的最低直流电场强度115kV/mm(特征寿命1 000h以上),XLPE/SiO2纳米复合材料的特征寿命已低于纯XLPE。对比分析XLPE/SiO2纳米复合材料和纯XLPE老化数据显示,纳米复合材料的寿命指数低于纯XLPE。该文直流老化研究结果表明,尽管XLPE/SiO2纳米复合材料的短期电性能指标优于纯XLPE,但长期直流老化性能会比纯XLPE差。
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关键词 XLPE/SiO2纳米复合材料直流老化特征寿命逆幂定律寿命指数    
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 wordsXLPE/SiO2 nano-composites    DC aging    characteristic lifetime    inverse power law    life index   
收稿日期: 2020-06-27     
PACS: TM215  
  TM855  
基金资助:山西省关键核心技术和共性技术研发攻关专项(2020XXX012)和国家自然科学基金(51377126)资助项目
通讯作者: 刘冠芳 女,1983年生,硕士,高级工程师,研究方向为牵引电机绝缘测试与诊断。E-mail: liuguanfang@163.com   
作者简介: 雷伟群 男,1989年生,博士,工程师,研究方向为电介质材料的直流老化与介电特性。E-mail: christ_lei@163.com
引用本文:   
雷伟群, 刘冠芳, 耿涛, 乌江, 郑晓泉, L. A. Dissado. XLPE/SiO2纳米复合材料长期直流老化特征寿命恶化分析[J]. 电工技术学报, 2022, 37(2): 311-321. Lei Weiqun, Liu Guanfang, Geng Tao, Wu Jiang, Zheng Xiaoquan, L.A. Dissado. Analysis on the Characteristic Lifetime Deterioration of XLPE/SiO2 Nano-Composites After Long-Term DC Aging. Transactions of China Electrotechnical Society, 2022, 37(2): 311-321.
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