Date: Wednesday 26th of April 2023, 13:30 (GMT).
Location: Isaac Newton Building (INB3305) and Online MS Teams meeting

‘Partial discharge from electrical treeing’

by Dr Nikola Chalashkanov, School of Engineering, University of Lincoln, Lincoln, UK.

Abstract:

The analysis of partial discharge (PD) data obtained from electrical treeing experiments showed some interesting correlations between the physical parameters related to the discharge activity and the statistical parameters characterising the distributions of the PD amplitudes. The properties of the dielectric material also have been found to affect the discharge activity especially a long-range charge transport, often referred to in the literature as quasi-DC conduction, found in epoxy resin-based insulation above its glass transition temperature. In this talk, Dr Chalashkanov will explore the opportunities to further improve our understanding of the PD process and the mathematical solutions required to achieve this goal.

Dr Nikola M. Chalashkanov was born in Sofia, Bulgaria in 1981. He graduated from the Technical University of Sofia in 2003 with a Bachelor’s degree in industrial engineering and gained the Master’s degree there in industrial engineering in 2005. He joined the University of Leicester, UK in 2007 as a Graduate Teaching Assistant and received a Ph.D. degree for his work on charge transport and electrical breakdown in epoxy resins in 2012. In the period 2011-2019, he was a Teaching Fellow in the Electrical Power and Power Electronics Research Group in the Department of Engineering, University of Leicester. He joined the University of Lincoln as a Senior Lecturer in 2019.
Dr Chalashkanov is author and co-author of more than 40 peer reviewed papers. His research interests include partial discharge and electrical treeing phenomena, dielectric properties and charge transport in polymers, chaos theory, statistical analysis and data mining. He is a member of the Institute of Physics, a senior member of the IEEE and a fellow of the HEA