Condition Assessment of Transformers Load Tap Changers Using Support Vector Machine

One of the widely used tests to diagnose incipient faults in transformer on-load tap changers is dissolved gas in oil analysis. Several standards and methods (i.e. International Electrotechnical Commision (IEC) 60599 and Institute of Electrical and Electronics Engineers (IEEE) C57.104 standards) have been developed to detect faults in transformers but not specifically in oil-type on-load tap changers. The main problem in applying a conventional method for assessing the condition of on-load tap changers is due to the arcing in oil through the normal operation of on-load tap changers which leads to incorrect diagnosis by these methods. An alternative way for this purpose is applying the modified Duval Triangle method to diagnose faults in on-load tap changers. Implementing an asset…