Nanofluids in transformer insulation: preparation, performance, and future prospects
Subject Areas : Applications of Nanostructures
Majid Mirzaee
1
,
Majid Rezaei Abdadchi
2
,
Alimorad Rashidi
3
1 - Non-metallic Group, Niroo Research Institute (NRI), Tehran, Iran
2 - Non-metallic Group, Niroo Research Institute (NRI), Tehran, Iran
3 - Non-metallic Group, Niroo Research Institute (NRI), Tehran, Iran
Keywords: Transformer, Oil, Nanofluid, Nanomaterials.,
Abstract :
With the increase in voltage levels in power transmission, the need to ensure the insulating performance of transformers has significantly increased. Mineral oil and paper are the main insulating components in oil-filled transformers. Given the growing demand for superior insulations, several researchers have conducted experimental studies to demonstrate the effectiveness and capabilities of transformer oils. To enhance the insulating level of ultra-high voltage transformers and reduce their weight and dimensions, it is essential to increase the dielectric strength of transformer oil and the cellulose impregnated. Recently, an innovative project has been implemented in the application of nanotechnology in the liquid insulations of transformers, with results indicating a significant improvement in the insulating properties of transformer oils. The field of oil-based transformer nanofluids has recently attracted considerable attention from both theoretical and practical perspectives. Nanofluids can be used as a potential replacement for mineral oils in the near future. This article reviews a collection of research conducted in this area, divided into three main sections. The first section focuses on the preparation of nanofluids, including various types of nanomaterials and synthetic methods for producing stable and suspended nanofluids. The second section thoroughly examines and compares the performance of nanofluids, concentrating on the thermal, electrical, and physicochemical properties of transformer oil. The third section addresses the advantages and limitations of nanofluids. The significance of this article lies in its compilation of previous studies, categorization of research nature, motivations, and predictions of future trends. Additionally, several recommendations for future research and applications of nanofluids are provided.
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