SYSTEM AND METHOD FOR DETECTING FAULTS IN POWER TRANSMISSION SYSTEMS USING OSCILLOGRAPHY

A system for detecting a fault in a distribution transformer of a power transmission system includes a current sensor and one or more processors. The current sensor may be positioned to sense a primary output current or a secondary output current flowing from the distribution transformer. The processor may be programmed or otherwise operable to receive an output of the current sensor over time, generate a time-varying output signal representing the received output of the current sensor, compare the time-varying output signal to one or more transformer fault profiles to produce a fault analysis, and generate a fault alert when the fault analysis indicates a transformer fault condition. The current sensor may be positioned around a primary output terminal or a secondary output terminal of the distribution transformer, as applicable, to respectively sense either the primary output current or the secondary output current flowing from the distribution transformer.