Effect of Dielectric Material on Decay of Surface Charge Deposited by Corona Discharge
2013 (English)In: Proceedings of the 18th International Symposium on High Voltage Engineering (ISH), 2013, 753-758 p.Conference paper (Refereed)
This work investigates the effect of different dielectric barriers on coronadischarge in the needle-plane geometry, where a layer of dielectric material was placedover the surface of the plane electrode. Different dielectric materials used werepolytetrafluoroethylene (PTFE), polyethylene (PE), polycarbonate (PC), polyvinylchloride(PVC), epoxy and pressboard. The discharges were generated by the application ofperiodic negative step voltage pulses. The results show that the evolution of coronapulses over time depends on the dielectric properties of the barriers. Unlike pressboardwith a higher conductivity, the dielectric materials with a lower conductivity such as PTFEand PE would have more surface charges deposited on its surface during the firstcharging period of 100 ms, and the charges would not disappear during the relaxationperiod of 10 s, therefore, the discharge activities can be reduced significantly after thefirst charging period.
Place, publisher, year, edition, pages
2013. 753-758 p.
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-166551OAI: oai:DiVA.org:kth-166551DiVA: diva2:811271
18th International Symposium on High Voltage Engineering (ISH), 2013 Korea
QC 201505182015-05-112015-05-112015-05-18Bibliographically approved