Conference Agenda

Session

A2-6: A2 Power Transformer and Reactor: Monitoring, Testing and Diagnostics

Time:

Wednesday, 01/Oct/2025:

4:00pm - 6:00pm

Location: Room 520F

Session Topics:

A2 Power transformers and reactors

Presentations

4:00pm - 4:15pm

Mitigation and Electromagnetic Transient (EMT) Analysis for Dissolved Gas in a 500 kV/16 kV Generator Step-Up (GSU) Transformer

Bruce Chen, Hyunjung Yong, Wenli Hong, Masoud Ali, Ska-Hiish Manuel, Anil Pradhan, Edward Burt

BC Hydro, Canada

4:15pm - 4:30pm

Insights in Condition Assessment of Power Transformers Using SOT and DGA Data for End-of-Life Estimation

Ahmad Vosoughi Hamzekhanlo¹, Stefan Kornhuber¹, Sebastian Kleyboldt², Mahmoud Moh'd²

¹University of Applied Science Zittau/Görlitz , Germany; ²50Hertz Transmission GmbH

4:30pm - 4:45pm

Determining Abnormal Behaviour of Loaded Tap Changers using a DGA 4-simplex.

Zachary Draper, James Dukarm, Sanskruti Padmawar

Delta-X Research, Canada

4:45pm - 5:00pm

Software for applying the DGA interpretation method of CIGRE TB 771 using gas limits specific for each type of fault

Michel Duval¹, Nelly Sénéchal¹, Luc Paulhiac², Jerzy Buchacz³, Patrick Picher¹, Sébastien Favron¹, Marta Cea de Ruano¹, Stéphane Proulx¹

¹Hydro Québec, Canada; ²EDF, France; ³Electropomiar Elektryka, Poland

5:00pm - 5:15pm

Evaluation of Water Content in Solid Insulation Using Online Monitor Data

Senja Maria Leivo

Vaisala Oyj, Finland

5:15pm - 5:30pm

Partial Discharge Based Root Cause Analysis for a 33 kV Cast Resin Transformer

Raul Alvarez¹, Rodolfo García-Colon², Mihai Huzmezan³

¹University of La Plata, Argentine Republic; ²Megger; ³Megger

5:30pm - 5:45pm

Impact of Accelerated Thermal Aging on Power Transformer Insulation: An FRA-Based Assessment

Avinash Srikanta Murthy¹, Genaro Andrew-Morlet², Zhanyue Wen², Saravanan Selvaraj¹

¹Hitachi Energy India Limited, India; ²Hitachi Energy Germany AG, Germany

5:45pm - 6:00pm

Analysis of on-line vibroacoustic monitoring of On-Load Tap Changers in Power Transformers

Joachim Schiessling¹, Nilanga Abeywickrama¹, Michel Gauvin², Patrick Picher²

¹Hitachi Energy Research, Sweden; ²Hydro-Québec, Canada