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Experimental Evaluation on Suitability of Alternate Fluids with the Influence of Additives for Power System Transformer Applications

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Abstract

Transformers are most vibrant equipment of power system network and petroleum base mineral oil is used as dielectric insulating medium and cooling medium. At present more research works are focused towards natural esters based fluids as prospectivedisplace to traditional mineral oil, due to similar properties of transformer oil, high availability of resources, high biodegradability and environmental friendly nature. This work emphasizes on enhancement of properties of natural ester using antioxidants. Natural esters such as mustard oil, rice bran oil, punna oil and castor oil are chosen for investigation along with antioxidants such as gallic acid, citric acid, propyl gallate and tertiary butylated hydroxy quinone. Natural esters are mixed with 1 g, 2 g, 3 g and 5 g of antioxidants for the investigations. The critical properties like breakdown voltage, flash point, fire point, viscosity, interfacial tension, water content and acidity of natural esters are analyzed based on IEC/ASTM standards before and after addition of antioxidants. From this study, it is noted that antioxidants improve the characteristics of natural esters after addition of it and properties are superior to the traditional mineral oil.By the suitable proportion of fluids the 80–90% of characteristics betterment are achieved with the influence of fatty acid based additives.

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Authors and Affiliations

  1. Department of Electrical and Electronics Engineering, Sri Ramakrishna Engineering College, Coimbatore, 641 022, Tamil Nadu, India

    M. Karthik

  2. Department of Electrical and Electronics Engineering, Government College of Technology, Coimbatore, 641 013, Tamil Nadu, India

    N. Narmadhai

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  1. M. Karthik
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  2. N. Narmadhai
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Karthik, M., Narmadhai, N. Experimental Evaluation on Suitability of Alternate Fluids with the Influence of Additives for Power System Transformer Applications. J. Electr. Eng. Technol. 17, 1883–1906 (2022). https://doi.org/10.1007/s42835-022-01035-0

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  • DOI: https://doi.org/10.1007/s42835-022-01035-0

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