TiO_2納米粒子對礦物及植物納米變壓器油中電荷輸運(yùn)特性的影響(英文)

編號：NMJS03874

篇名：TiO_2納米粒子對礦物及植物納米變壓器油中電荷輸運(yùn)特性的影響(英文)

作者：杜岳凡； 李成榕； 呂玉珍； 鐘宇翔； 陳牧天； 周游；

關(guān)鍵詞：semiconductive nanoparticles； mineral oil； nanofluid； transformer oil； charge shallow trap； charge t

機(jī)構(gòu)： Beijing Key Laboratory of High Voltage and Electromagnetic Compatibility, School of Electric and Ele

摘要： TiO2 semiconductive nanoparticles are added into mineral and ester based transformer oil to form semiconductive nanofluids (SNFs) with the aim of enhancing the oil’s insulating performance. Charge accumulation and decay characteristics of both pure oils and SNFs are measured by pulse electroacoustic (PEA) technique. The result reveals that compared with pure oil, SNFs have more uniform in- ternal electric fields with voltage applied and higher charge decay rate after removing the applied voltage. This is caused by the increase of shallow trap density in SNFs, due to the test results of thermally stimulated current (TSC). It is proposed that the electron trapping and de-trapping processes in shallow traps could be the main charge transport processes in the nanofluid transformer oil.