How does transformer fluid stability impact the reliability of transformers?

Transformer fluid stability refers to the ability of the insulating oil to maintain its chemical and physical properties over time under operational stresses. Stable transformer fluid ensures consistent insulation, cooling, and protection of internal components. If the fluid degrades, it can lead to:

Reduced Dielectric Strength: Increases the risk of electrical discharges and insulation failure.

Formation of Acids and Sludge: Causes corrosion of transformer components and clogs cooling channels.

Decreased Thermal Conductivity: Impairs heat dissipation, leading to overheating.

Gas Formation: Indicates potential faults and can further degrade the oil.

Therefore, fluid stability is crucial for transformer reliability. Maintaining stable transformer fluid minimizes the risk of failures, extends equipment life, and reduces maintenance costs.