CONTROL OF POWER CONVERTERS IN POWER TRANSMISSION NETWORKS IN ORDER TO LIMIT CONVERTER AC CURRENTS

A computer-implemented method (400) of controlling a power converter in a power transmission network. A first amplitude limit value for a first AC current output from an AC side of the power converter is received (410). A second amplitude limit value for a negative phase sequence component of the fi...

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Bibliographische Detailangaben
Hauptverfasser:	BARKER, Carl, ADAMCZYK, Andrzej, DANG, Huy Quoc Si, ZOU, Li
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	A computer-implemented method (400) of controlling a power converter in a power transmission network. A first amplitude limit value for a first AC current output from an AC side of the power converter is received (410). A second amplitude limit value for a negative phase sequence component of the first AC current is received (420). The negative phase sequence component is measured (430) to provide a measured second amplitude. The negative phase sequence component is regulated (440) to flow with a regulated second amplitude that is the lesser of the measured second amplitude and second amplitude limit value. A positive phase sequence component of the first AC current is regulated (450) to flow with an amplitude not exceeding a regulated third amplitude. The regulated third amplitude is set using a function of the first amplitude limit value and the regulated second amplitude, such that the regulated second amplitude and the regulated third amplitude, when combined, provide a first amplitude for the first AC current that is substantially equal to the first amplitude limit value.