Applied voltage frequency dependence of partial discharges in electrical trees
2009 (English)In: Proceedings of the 21st Nordic Insulation Symposium, Göteborg, Sweden, 2009, 2009Conference paper (Refereed)
In this paper the growth of electrical trees in a needleplane electrode arrangement is investigated. Electrical trees are grown in epoxy samples by applying a sinusoidal voltage of 16 kV peak and 17 kV peak. Electrical tree growth is followed under a stereo microscope in real time. As soon as an electrical tree reaches a specific length or shape the aging sequence ends and the partial discharge activity from the trees is investigated at a fixed voltage with frequencies varying between 0.1 to 100 Hz. The frequency dependence of the partial discharge is investigated and related to the different stage and forms of the electrical tree.
Place, publisher, year, edition, pages
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-31433OAI: oai:DiVA.org:kth-31433DiVA: diva2:403912