The rise in transmission voltages levels, the demand for insulating reliability of the transformer is getting more and more critical. The mineral oil (MO) together with paper is the main insulation constituents in oil-immersed transformers. To enhance the insulation level of ultra-high voltage (UHV) transformers and to decrease its weight and size, it is highly required to increase the insulating conduct of transformer oil (TO) and oil-impregnated cellulose. Lately, a distinctive novel venture of application of nanotechnology with liquid insulation of transformer has been conducted and the results have displayed marvelous enhancement in the insulation properties of transformer oil. The transformer oil-based nanofluids research domain (i.e., NFs) has been attracting huge attention during recent years both in theoretical and practical fields. NFs may be applied as a potential substitute for MO in the near future. To recognize various brunts of NFs and show evolving developments and challenges, the study demonstrates a scientometric review established on 210 published features from 2004 to 2019 through co-author, co-occurring and co-citation investigations. The significance of the editorial lies in compiling former inquiries, categorizing research nature, motivations and forecasting impending research orientations. Lastly, some recommendations for future NFs research and application are suggested.

传输电压水平的上升，对变压器绝缘可靠性的要求越来越重要。矿物油（MO）与纸一起是油浸式变压器的主要绝缘成分。为了提高超高压（UHV）变压器的绝缘水平并减小其重量和尺寸，迫切需要提高变压器油（TO）和浸油纤维素的绝缘性能。近来，进行了将纳米技术应用于变压器的液体绝缘的独特新颖的尝试，其结果显示出变压器油的绝缘性能的惊人提高。近年来，基于变压器油的纳米流体研究领域（即NFs）在理论和实践领域都引起了巨大的关注。在不久的将来，NF可以用作MO的潜在替代品。为了认识到NF的各种冲击力并显示出不断发展的变化和挑战，该研究表明了2004年至2019年通过合著者，同时发生和被引文献调查对210种已发表的特征进行的科学计量学综述。社论的意义在于汇编以前的询问，对研究性质，动机进行分类并预测即将到来的研究方向。最后，提出了一些有关未来NFs研究和应用的建议。共现和共引调查。社论的意义在于汇编以前的询问，对研究性质，动机进行分类并预测即将到来的研究方向。最后，提出了一些有关未来NFs研究和应用的建议。共现和共引调查。社论的意义在于汇编以前的询问，对研究性质，动机进行分类并预测即将到来的研究方向。最后，提出了一些有关未来NFs研究和应用的建议。