Guest Lecture on “Methanol and Ethanol As Paper Ageing Indicators For Transformers’’
February 22, 2017 · 7:00 AM - 8:00 AM @ Peradeniya, Faculty of Engineering
Description
Guest Lecture on “Methanol and Ethanol As Paper Ageing Indicators For Transformers’’ Abstract Aging of transformer paper insulation is commonly investigated through indirect measurements conducted in the oil, such as furanic compounds and carbon oxide gases. In addition to the conventional indicators, recent investigations have shown that alcohols like methanol and ethanol in oil could be used as paper aging indicators. Applicability of these new paper aging indicators in a novel, gas-to-liquid technology based transformer oil was investigated through an accelerated laboratory aging experiment. A conventional mineral oil was also tested as a reference. Kraft paper aged in both oil types showed similar reductions in degree of polymerization and tensile strength. Amount of methanol in oil was higher than that of 2-FAL in oil when DP is over 400, confirming the promise of using methanol as an early paper aging indicator. In addition, oil only aging experiments showed that oil does produce methanol but it is negligible compared with oil paper aging experiment; however the amount of ethanol measured in the present oil paper aging experiment is believed to be originated from oil oxidation rather than from paper aging.
Agenda
3.45 pm - Refreshments 4:00 pm - 5:00 pm - Talk