BaTiO_(3)掺杂驻极体复合纳米纤维的制备及其在变压器绝缘油先进再生技术中的应用  

Application of BaTiO_(3) Doped Electret Composite Nanofibers in Advanced Regeneration Technology of Transformer Insulating Oil

作　　者：何潇 周年荣 张政 张林山 谭向宇 HE Xiao;ZHOU Nianrong;ZHANG Zheng;ZHANG Linshan;TAN Xiangyu(Electric Power Research Institute of Yunnan Power Grid Co.,Ltd.,Kunming 650217,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing 400044,China)

机构地区：[1]云南电网有限责任公司电力科学研究院,云南昆明650217 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《绝缘材料》2022年第2期28-37,共10页Insulating Materials

基　　金：国家自然科学基金资助项目(51377176);中国南方电网科技项目(YNKJXM20190709)。

摘　　要：驻极体效应可提高滤膜对极性杂质的吸附能力,本研究将驻极体技术与静电纺丝工艺相结合,制备了BaTiO_(3)掺杂复合纳米纤维变压器绝缘油滤膜。通过对电纺参数与纤维膜形貌之间关联开展了较为系统的研究,得出制备直径和孔径较小且无串珠PVDF纳米纤维膜的电纺条件。随后进行变压器绝缘油再生实验。结果表明:制备的变压器油滤膜具有可清除极性物质、比表面积高、孔隙率高等优点,通过掺杂BaTiO_(3)和电晕放电处理可使复合纳米纤维膜稳定带电。老化绝缘油经过驻极掺杂复合纳米纤维膜过滤后介质损耗和击穿电压得到明显优化,相比其他滤膜,驻极掺杂复合纳米纤维膜使变压器绝缘油的再生效果更好。The electret effect can improve the adsorption capacity of the filter membrane for polar impurities. In this paper, BaTiO_(3) doped composite nanofiber filter membrane for transformer insulating oil was prepared by combining electret technology with electrospinning process. The electrospinning conditions for preparing PVDF nanofiber membranes with small diameters and pores without beading were obtained by system study on the relationship between electrospinning parameters and the morphology of fiber membrane. And then the regeneration experiment for transformer insulating oil was carried out. The results show that the filter membrane can remove polar substances, and has high specific surface area and high porosity. After doping BaTiO_(3) and corona discharge treatment, the filter membrane can be stably charged. The dielectric loss factor and breakdown voltage of the aged insulating oil are significantly optimized after filtering by the BaTiO_(3) doped composite nanofiber filter membrane.Compared with other filter membrane electret-doped composite nanofiber membranes, it has better regeneration effect on transformer insulation oil.

关 键 词：变压器 驻极体 纳米纤维 静电纺丝 绝缘油再生 

分 类 号：TM215[一般工业技术—材料科学与工程] TM214[电气工程—电工理论与新技术]