Informatics Publishing Limited

Aditya Prakash Mishra ¹, R. T. Arun Ram Prasath ², Sankar Narayan Mahato ¹, Nirmal Kumar Roy ³, P. Thomas ⁴

Affiliations
1 EE Department, National Institute of Technology, Durgapur, IN
2 Ph.D. Full-time Research Scholar, EE Department, National Institute of Technology, Durgapur, IN
3 High Voltage and Insulation Laboratory, EE Department, National Institute of Technology, Durgapur, IN
4 Dielectric Materials Division, Central Power Research Institute, Bangalore, IN

Abstract

In general, insulating oil serves as an insulation and cooling medium of power transformers and different High Voltage (HV) application. The properties of insulating oil like breakdown voltage (BDV), viscosity, flash point and fire point are enhanced by adding of different additives in an optimal way. In this work, a mathematical model has been developed by using Lagrange interpolation technique for predicting the critical properties values in different volume concentrations (in Vol %). The predicted critical properties are compared with the set of measured data. Based on this approach, accuracy of predicted value has been obtained in between the two available measured data in two known different volume concentrations. From the volume concentrations (0-0.01%), the error seems to be negligible. Hence, Lagrange interpolation technique is considered as a reliable technique for predicting the intermediate value for different concentrations of nano powder doped insulating oil used in different HV power apparatus.

Keywords

Insulating Oil, Critical Parameters, Interpolation Technique, Nanofluids.

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