IEEE Newsletter - University of Peradeniya Volume 2 (March 2019) | Page 12

P
ower transformers play a predominant
'PES Talk'
role in electric power systems. A new
mode of failure, which is not readily
understood, is the corrosion of internal silver
contacts. Corrosive Sulphur compounds in mineral oil can react with the copper and silver surfaces in a power
transformer which has been known to lead to failure. The metal Sulphide layer may break off and then be carried
around the transformer by the flow of oil, which in turn can cause dielectric failure. To prevent such incidents,
studying this failure mechanism and developing transformer condi on monitoring techniques are required.
IEEE PES Sri Lanka Chapter, IEEE Sri Lanka Central Region
Subsec on and IEEE PES Peradeniya Student Chapter jointly organized a
talk on "Corrosive Sulphur Related Power Transformer Failures" by Mr.
Sameera Samarasinghe, PhD Student, School of Informa on Technology
and Electrical Engineering, University of Queensland, Australia. It was
held on 31st of May, 2018 at the Faculty of Engineering, University of
Peradeniya.
At the end of the program par cipants acquired the knowledge to
iden fy the Sulphur related transformer failure mechanisms,
factors in those mechanisms and required condi on
monitoring strategies to prevent those failures.
Asith Devinda & Thashmila Araliya
Electrical and Electronic Engineering
University of Peradeniya
PAGE 10
IEEE Newsletter University of Peradeniya