When a transformer malfunctions, it is necessary to conduct fault diagnosis and handling in a timely manner. Common transformer faults include winding faults, core faults, insulation faults, tap changer faults, etc. The main methods for fault diagnosis include electrical tests, analysis of dissolved gases in oil, and infrared temperature measurement, etc. Through comprehensive analysis of the fault phenomena and detection data, the type and location of the fault are determined, and corresponding treatment measures are taken, such as replacing the damaged windings, repairing the core faults, dealing with insulation defects, and adjusting the tap changer, etc., to restore the transformer to normal operation.
