Power transformer fault detection methods and Effects of edge burrs fault: a review

Power transformers form a central component of a power network, and when a transformer fails, this causes unexpected disruptions to operations and repair work which is costly. Transformers can be affected by a range of faults, among which is the edge burr. This fault has been found to increase power transformer losses, as well as leading to greater eddy current losses within magnetic circuits. For a larger transformer core, short-circuit current may rise to a level where the core is damaged. This study reviews edge burr faults, and how these faults are identified and confirmed. It investigates the benefitsand challenges of established and novel approaches to detecting emerging faults, considering advanced methods, range of measurement, accuracy and reliability, and identifies which approach to detecting edge burr faults is most suitable for different instances of faults. The study provides useful information for understanding and detecting edge burr faults through application of varied detection approaches.