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Analysis on surface discharge patterns caused by harmonic AC voltages


Affiliations
1 Dept. of Electrical and Computer Engineering, National University of Singapore, Singapore
2 Electrical and Computer Engineering Department , Nazarbayev University, Astana, Kazakhstan
3 Indian Institute of Technology Madras, India
     

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Surface roughness and fractal analysis is carried out on the surface discharge patterns formed on epoxy nanocomposite, by harmonic AC voltages. The surface discharge patterns are obtained be adopting IEC(b) electrode configuration, and surface degradation levels are compared. It is observed that discharges initiated from the high voltage electrode propagates over the surface of the nanocomposites, the extent of discharge propagation are different for AC voltages with different harmonics and THDs. Surface roughness does not linearly increase with the increase in order of harmonics. Fractal dimension of surface discharge patterns in air medium varies between 1.4 – 1.72.

Keywords

Surface discharge, surface roughness, fractal dimension, harmonics, epoxy nanocomposite
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  • Analysis on surface discharge patterns caused by harmonic AC voltages

Abstract Views: 263  |  PDF Views: 0

Authors

Aravinth Subramaniam
Dept. of Electrical and Computer Engineering, National University of Singapore, Singapore
Sanjib Kumar Panda
Dept. of Electrical and Computer Engineering, National University of Singapore, Singapore
Mehdi Bagheri
Electrical and Computer Engineering Department , Nazarbayev University, Astana, Kazakhstan
Nilesh J. Vasa
Indian Institute of Technology Madras, India
Ramanujam Sarathi
Indian Institute of Technology Madras, India

Abstract


Surface roughness and fractal analysis is carried out on the surface discharge patterns formed on epoxy nanocomposite, by harmonic AC voltages. The surface discharge patterns are obtained be adopting IEC(b) electrode configuration, and surface degradation levels are compared. It is observed that discharges initiated from the high voltage electrode propagates over the surface of the nanocomposites, the extent of discharge propagation are different for AC voltages with different harmonics and THDs. Surface roughness does not linearly increase with the increase in order of harmonics. Fractal dimension of surface discharge patterns in air medium varies between 1.4 – 1.72.

Keywords


Surface discharge, surface roughness, fractal dimension, harmonics, epoxy nanocomposite



DOI: https://doi.org/10.33686/prj.v13i1.189227