Biçen, YunusÇilliyüz, YusufAras, FarukAyduğan, Güzide2020-04-302020-04-302011978-1-4244-7355-7https://hdl.handle.net/20.500.12684/2618IEEE International Conference on Dielectric Liquids (ICDL) -- JUN 26-30, 2011 -- Trondheim, NORWAYFaruk ARAS, Dr./0000-0001-5513-9139WOS: 000295317700042This paper presents an assessment on aging model of IEEE and IEC standards using thermal model of oil-immersed power transformer for natural ester and mineral oil. For this purpose, a model created for the analysis of behavior transient thermal performance with aging both of natural ester and mineral oils. Thermal model of the transformer is based on thermal-electrical analogy that is calculated separately for natural and mineral oils covering top-oil and hot-spot temperatures. The hot-spot temperature values of each ester/oil are used to calculate aging parameters which include the aging acceleration factor, time dependent relative aging rate and insulation life loss variations.eninfo:eu-repo/semantics/closedAccessaginginsulationthermal modelnatural oiltrasformertemperatureloadabilityConference ObjectN/A