A study on electrically induced thermal effects on dielectric parameters of paper oil insulation in presence of DBDS

Summary

The effect of elevated temperatures induced by continuous current overloading of transformers on the performance of paper oil insulation is investigated. This study has been carried out in presence of spiked concentrations of DBDS in mineral oil for understanding its effects on copper sulphide. The dielectric response of paper oil insulation when subjected to elevated temperatures is studied using Frequency domain spectroscopy. It is observed that there is significant increase in tan ? (dissipation factor), real and imaginary part of complex permittivity and complex capacitance of paper oil insulation due to copper sulphide deposits on paper insulation.

Additional informations

Authors

S.R. JAGANNATHAN

Keywords

Thermal effects, DBDS, FDS, complex capacitance, complex permittivity