Combatting the effect of moisture in transformers
Using advanced computer simulations and lab experiments, Zhao studied the problem from the smallest level — down to individual molecules and electrical charges.
He discovered that the interface between the oil and paper plays a key role in stopping dangerous electrical currents. But when water enters, it weakens this protective barrier and makes it easier for electricity to break through.
Based on this understanding, Zhao developed a new protective coating — a kind of "super raincoat" for the insulation. It’s environmentally friendly, oil-resistant, and helps keep moisture out while extending the lifespan of the material.
This research provides a deeper understanding of a hidden problem in our power systems and offers a practical solution that could help make our electricity supply more reliable, greener, and safer for everyone.
Title of PhD thesis: . Supervisors: Björn Baumeier and Haibao Mu (external).