Voltage-time Characteristics of the Different Nano-Oil under Lightning Impulse
2023 IEEE 6th International Electrical and Energy Conference (CIEEC)(2023)
摘要
This paper presents experimental results of breakdown voltage-time characteristics of transformer oil and three kinds of nano-oil (Fe304, TiO
2
, Al
2
O
3
) under lightning impulse voltage. The test results show that three kinds of nanoparticles can improve the positive breakdown performance of the transformer oil, but has little effect on the negative breakdown performance. The reason for this phenomenon may be that the three kinds of nanoaprtcles can weaken of the electric field near the positive streamer head and enhance of the electric field of the negative streamer head, but the specific mechanism still needs to be explored. The results of the paper can provide a certain reference for insulation design by using nano-oil as insulation medium.
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关键词
the voltage-time characteristics,transformer oil,nanoparticle,lightning impulse
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