摘要
为了研究纳米SiO_(2)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/SiO_(2)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/SiO_(2)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/SiO_(2)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1000h以上),XLPE/SiO_(2)纳米复合材料的特征寿命已低于纯XLPE。对比分析XLPE/SiO_(2)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/SiO_(2)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。
In order to study the long-term aging characteristics of XLPE/SiO_(2)nano-composites under HVDC,a comparative study of pure XLPE and XLPE/SiO_(2)nano-composites was conducted.First,aging experiments were performed on both materials at different DC electric fields.It was found that XLPE/SiO_(2)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/SiO_(2)nano-composites was getting closer to that of pure XLPE.Until the minimum electric field is115kV/mm,the characteristic lifetime of XLPE/SiO_(2)nano-composites was shorter than that of pure XLPE.Experimental studies further found that the life index of XLPE/SiO_(2)nano-composites was lower than that of pure XLPE.Therefore,although XLPE/SiO_(2)nano-composites composite showed excellent short-term electrical properties,the long-term DC aging property might not be better than that of pure XLPE.
作者
雷伟群
刘冠芳
耿涛
乌江
郑晓泉
L.A.Dissado
Lei Weiqun;Liu Guanfang;Geng Tao;Wu Jiang;Zheng Xiaoquan;L.A.Dissado(Shanxi Provincial Key Laboratory of Traction Motor for Rail Transit CRRC Yongji Electric Co.Ltd,Yuncheng 044502 China;School of Electronics and Information Xi’an Polytechnic University,Xi’an 710038 China;State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University,Xi’an 710049 China;Department of Engineering University of Leicester,LE17RH Leicester U.K.)
出处
《电工技术学报》
EI
CSCD
北大核心
2022年第2期311-321,共11页
Transactions of China Electrotechnical Society
基金
山西省关键核心技术和共性技术研发攻关专项(2020XXX012)
国家自然科学基金(51377126)资助项目。
