OVERVOLTAGE PROTECTION DEVICE OF VARIABLE SPEED POWER GENERATION SYSTEM

An overvoltage protection device of a variable-speed power system according to an embodiment includes a detection unit (27) configured to detect a prescribed phenomenon that occurs when a failure has occurred on the high-voltage side of a main transformer or when a failure has not occurred on the lo...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIZUKI, Teruyuki, KAGEYAMA, Takahisa
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION
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Beschreibung
Zusammenfassung:	An overvoltage protection device of a variable-speed power system according to an embodiment includes a detection unit (27) configured to detect a prescribed phenomenon that occurs when a failure has occurred on the high-voltage side of a main transformer or when a failure has not occurred on the low-voltage side of the main transformer or inside the main transformer or to detect that the prescribed phenomenon has not occurred, and a control unit (L1, L2, F1, F2, SW1, SW2) configured to determine based on a detection result of the detection unit (27) whether control to forcibly release the operation of the overvoltage suppression device (13) is to be permitted to be performed.