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Application of a Class of Nano fluids to improve the Loadability of Power Transformers

Ramu, TS and Keshavan, BK and Murthy, Balasubramanya KN (2012) Application of a Class of Nano fluids to improve the Loadability of Power Transformers. In: 10th IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM), JUL 24-28, 2012 , Bangalore, INDIA.

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It is generally known that addition of conducting or insulating particles to mineral transformer oil, lowers its breakdown strength, E-d. However, if the particulates are of molecular dimensions, or nanoparticles, (NPs), as they are called, the breakdown strength is seen to increase considerably. Recent experiments by the authors on oil cooled power equipment such as transformers showed that, nanofluids comprising NPs of selected oxides of iron, such as Fe(3)o(4), called magnetite, added to transformer oil increased the breakdown voltage of the virgin oil and more importantly a remarkable enhancement in the thermal conductivity and the viscosity and hence an increased loadability of the transformer for a given top oil temperature (TOT).

Item Type: Conference Proceedings
Series.: International Conference on Properties and Applications of Dielectric Materials-ICPADM
Publisher: IEEE, NEW YORK, USA
Additional Information: Copyright for this article belongs to IEEE, NEW YORK, USA
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 10 Dec 2012 06:53
Last Modified: 10 Dec 2012 07:05
URI: http://eprints.iisc.ac.in/id/eprint/45518

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