Measurement of ion mobility in transformer oils for HVDC applications
Paper in proceeding, 2012

Conduction process in dielectric liquids usually occurs due to ion migration and is therefore characterized by concentration and mobility of the ionic charge carriers. For this reason accurately determining these parameters and especially ion mobility in insulating oils for HVDC applications needs to be done precisely. In this report various methods for determining ion mobility are described, including single polarity, reversal polarity methods in time domain as well as frequency domain based measurement of dielectric response. The advantages and disadvantages of each of them are presented and illustrated with the results of measurements on various oils using two different test cells. The dependence of ion mobility on measuring voltage level and temperature are analyzed and compared.

ion mobility

transformer oil



Lijun Yang

Mohsen Shafiee Zadeh

Joachim Schiessling

Olof Hjortstam

Yuriy Serdyuk

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Stanislaw Gubanski

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Proceedings of the International Conference on High Voltage Engineering and Application

978-1-4673-4745-7 (ISBN)

Areas of Advance


Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering





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