本文概述了纳米改性变压器油的发展历史以及纳米流体的制备方法，总结了纳米颗粒对纳米改性变压器油电气特性（击穿性能、介电特性）的影响，分析了纳米颗粒对变压器油介电性能的作用机理；阐述了纳米颗粒对变压器油导热性能的影响及其作用机理；最后综述了新型环境友好型植物油的纳米改性研究工作以及相关的研究成果。文章认为适当的纳米颗粒会对变压器油的电气和导热性能带来显著的提升，可以满足充油电力设备小型化和向更高电压等级发展的需求。%The development and preparation method of nano-modified transformer oil are summarized. The influence of nanoparticles on the electrical properties including breakdown strength and dielectric property is summarized. The mechanism of the influence of nanoparticles on dielectric property is discussed. Meanwhile,the effect of nanoparticle on the thermal property is discussed along with the corresponding mechanism. At last,the research of the new environmental-friendly vegetable oil modified by nanoparticles is sum-meried. It is found by correlative study that the electrical and thermal properties of transformer oil could be improved by proper nanop-articles. The nano-modified transformer oil meets the requirements of miniaturization and higher voltage of electric devices in power system.
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