The effects of shallow traps on the positive streamer electrodynamics in transformer oil based nanofluids
The effects of shallow traps on the positive streamer electrodynamics in transformer oil based nanofluids
复制标题
浅陷阱对变压器油基纳米流体正流光电动力学的影响
DOI：
10.1088/1361-6463/aaab2a
复制
发表时间：
2018-02
期刊：
影响因子：
--
通讯作者：
Lu Wu
中科院分区：
文献类型：
--
作者：
Zhou You;Sui Sanyi;Li Jie;Ouyang Zigui;Lv Yuzhen;Li Chengrong;Lu Wu
纳米技术为改善传统电介质材料的绝缘性能提供了新的途径。本研究以油酸为表面改性剂，制备了Fe3O4、TiO2和Al2O3三种矿物油基纳米流体。实验研究了正雷电冲击电压作用下纳米流体中流光的起始电压、终止长度和传播速度。结果表明，纳米粒子对正电子流在Transformer油中的产生和传播过程具有抑制作用，这与纳米粒子的种类有关。此外，还对纯油和纳米流体中的圈闭特性进行了初步研究。建立了油样中电荷载流子迁移率与陷阱特性之间的关系。纳米流体中陷阱密度的增加扩散了电离电子的动能并将其转化为负离子，导致正流光前方的电场强度降低，纳米流体的击穿强度增加。
Nanotechnology provides a new way to improve the insulating properties of traditional dielectric materials. In this study, three types of mineral oil based nanofluids were prepared by suspending Fe3O4, TiO2 and Al2O3 nanoparticles all of which were surface modified by oleic acid. The inception voltage, stopping length and propagating velocity of streamers in the nanofluids under positive lightning impulse voltage were experimentally studied. It is found that nanoparticles can restrain the initiation and propagation processes of positive streamers in transformer oil depending on the types of nanoparticles. In addition, the trap characteristics in pure oil and nanofluids were comparably studied. The relationship between the trap characteristics and mobility of charge carriers in oil samples were then established. The increased trap density in nanofluids diffuses kinetic energy of ionized electrons and converts them into negative ions, resulting in the reduced electrical field strength in front of positive streamer and increased breakdown strength of nanofluids.
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DOI：
10.1109/elinsl.1998.704636
发表时间：
1998-06
期刊：
Conference Record of the 1998 IEEE International Symposium on Electrical Insulation (Cat. No.98CH36239)
影响因子：
--
作者：
H. Wintle
通讯作者：
H. Wintle
DOI：
10.1520/mono2-eb
发表时间：
1994
期刊：
--
影响因子：
--
作者：
R. Bartnikas
通讯作者：
R. Bartnikas
影响因子：
2.9
作者：
P. Wedin
通讯作者：
P. Wedin
显着改善碳酸丙烯基纳米流体的击穿性能
影响因子：
1.3
作者：
Hou, Yanpan;Zhang, Ji;e;Zhang, Zicheng
通讯作者：
Zhang, Zicheng
DOI：
10.1109/tdei.2005.1522186
发表时间：
2005-10-01
影响因子：
3.1
作者：
Tanaka, T
通讯作者：
Tanaka, T