What methods are used for wind turbine transformer oil quality control?

Wind turbine transformer oil quality control involves regular testing, filtration, and degassing to monitor and maintain oil purity. Parameters such as moisture, gas content, and acidity are tracked to ensure the oil retains its insulating and cooling properties. Filtration removes solid contaminants, while vacuum degassing eliminates moisture and gases. By regularly assessing these factors, oil quality is maintained, reducing the risk of transformer failure.