Combatting the effect of moisture in transformers
Haoxing Zhao defended his PhD thesis at the Department of Applied Physics and Science 果冻传媒 on March 18.
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Transformers are essential devices that keep our electricity running 鈥� from lighting our homes to powering trains and hospitals. They act like giant phone chargers for our cities. Inside each transformer is a special insulating material, made from cellulose paper soaked in oil. This material helps prevent electrical failure. However, just a small amount of water can severely damage the insulation, making transformers less safe and more likely to fail 鈥� sometimes even leading to blackouts or fires. For his PhD research Haoxing Zhao focused on understanding how moisture causes damage inside this insulation and how to prevent it.
Using advanced computer simulations and lab experiments, Zhao studied the problem from the smallest level 鈥� 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 鈥� a kind of "super raincoat" for the insulation. It鈥檚 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: Bj枚rn Baumeier and Haibao Mu (external).