What are the technical aspects of water in transformer oil?

Water in transformer oil significantly affects the performance and longevity of power transformers. Its presence can lead to reduced dielectric strength, increased corrosion of internal components, and accelerated aging of the insulation system. The solubility of water in oil varies with temperature, and even low levels can form harmful emulsions. Regular monitoring and maintenance, including moisture analysis, are essential to mitigate these risks and ensure optimal transformer operation.