GENERATOR ROTOR TURN-TO-TURN FAULT DETECTION USING FRACTIONAL HARMONICS

GENERATOR ROTOR TURN-TO-TURN FAULT DETECTION USING FRACTIONAL HARMONICS

Detection and protection against electric power generator rotor (120) turn-to-turn faults (122), rotor multi-point-to-ground faults, and rotor permanent magnet faults is provided herein. A fractional harmonic signal is used to determine the rotor fault condition. The fractional harmonic signal may b...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Alla, Matchyaraju, Chowdhury, Ritwik, Fischer, Normann, Finney, Dale, Scharlach, Rogerio
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:Detection and protection against electric power generator rotor (120) turn-to-turn faults (122), rotor multi-point-to-ground faults, and rotor permanent magnet faults is provided herein. A fractional harmonic signal is used to determine the rotor fault condition. The fractional harmonic signal may be a fractional harmonic magnitude of the circulating current of one phase. The fractional harmonic may be a fractional harmonic magnitude of a neutral voltage. A tripping subsystem (1232) may issue a trip command based upon detection of a rotor turn-to-turn fault condition.Fig. 4