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Study on Flowing Development Characteristics of TiO2 Nano-modified Vegetable Insulating Oil
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Nianrong ZHOU1, Xiao HE1, Xinliang GUO1, Yunhua HE1, Linshan ZHANG1, Xiangyu TAN1, Zhengyun FANG2
Insulating Materials | 2022, 55(4) : 71 - 76
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Insulating Materials | 2022, 55(4): 71-76
• Insulation Technology •
Study on Flowing Development Characteristics of TiO2 Nano-modified Vegetable Insulating Oil
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Nianrong ZHOU1, Xiao HE1, Xinliang GUO1, Yunhua HE1, Linshan ZHANG1, Xiangyu TAN1, Zhengyun FANG2
Affiliations
  • 1Electric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming 650217, China
  • 2Yunnan Power Grid Co., Ltd., Kunming 650011, China
Published: 2022-04-20 doi: 10.16790/j.cnki.1009-9239.im.2022.04.010
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Vegetable insulating oil has a higher ignition point and better environmental protection, but its breakdown voltage is lower than mineral insulating oil. Using nanoparticles to modify vegetable insulating oil can improve the breakdown voltage of vegetable insulating oil. In this study, the lightning impulse breakdown voltage test was conducted on vegetable insulating oil modified by different volume fractions of nano-TiO2, at the same time, pictures of the production, development, and termination of the streamer during the breakdown process were taken. The streamer development morphology of the original vegetable oil and the nano-modified vegetable insulating oil were observed, and the effect law of TiO2 nanoparticles on the lightning impulse breakdown voltage of vegetable insulating oil and the development process of streamers was analyzed. The results show that adding TiO2 nanoparticles can improve the positive polarity lightning impulse performance of vegetable insulating oil, and the development speed of streamer is relatively slow, while the development speed of streamer is faster under negative polarity lightning impulse voltage.

vegetable insulating oil  /  nano modification  /  titanium dioxide  /  breakdown voltage
Nianrong ZHOU, Xiao HE, Xinliang GUO, Yunhua HE, Linshan ZHANG, Xiangyu TAN, Zhengyun FANG. Study on Flowing Development Characteristics of TiO2 Nano-modified Vegetable Insulating Oil[J]. Insulating Materials, 2022 , 55 (4) : 71 -76 . DOI: 10.16790/j.cnki.1009-9239.im.2022.04.010
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Year 2022 volume 55 Issue 4
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.04.010
  • Receive Date：2020-09-05
  • Online Date：2025-12-22
  • Published：2022-04-20
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History
  • Received：2020-09-05
  • Revised：2021-02-03
Affiliations
    1Electric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming 650217, China
    2Yunnan Power Grid Co., Ltd., Kunming 650011, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2022.04.010
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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