What is the impact of static electrification on transformer oil in power transformers?

The impact of static electrification on transformer oil in power transformers can lead to the accumulation of electric charges on the oil’s surface. This phenomenon can cause partial discharges, which may degrade the insulating properties of the oil and potentially lead to insulation failure. Additionally, static electrification can promote the formation of contaminants, further compromising the performance and longevity of the transformer oil and the overall transformer system.