Abstract: A system and method for locating inter-turn short circuits or ground faults in a rotor winding of an electrical generator. The method analyzes data from a Recurrent Surge Oscillograph (RSO) test, identifies a spike or anomaly in a reflected RSO signal, determines an elapsed time between a transmitted signal and the anomaly in the reflected signal, calculates a distance along the winding conductor to the inter-turn short circuit or ground fault based on the elapsed time, and uses a geometric model of the winding conductor to identify a location of the fault based on the distance. The location of the inter-turn short circuit or ground fault specifies a coil number, a turn number within the coil and a position within the turn.

Abstract: A monitoring system for electrical generators is disclosed The system continuously monitors sensor data from the generator and other electrical and mechanical equipment in a power plant, including data from sensors of different signal types, and data from existing control systems The monitoring system stores the data and analyzes it for both current conditions and time-based trends, and provides alarms for out-of-range conditions.

Abstract: A system and method for locating inter-turn short circuits or ground faults in a rotor winding of an electrical generator. The method analyzes data from a Recurrent Surge Oscillograph (RSO) test, identifies a spike or anomaly in a reflected RSO signal, determines an elapsed time between a transmitted signal and the anomaly in the reflected signal, calculates a distance along the winding conductor to the inter-turn short circuit or ground fault based on the elapsed time, and uses a geometric model of the winding conductor to identify a location of the fault based on the distance. The location of the inter-turn short circuit or ground fault specifies a coil number, a turn number within the coil and a position within the turn.