METHOD AND DEVICE FOR PROCESSING VOLTAGE DROP, GRID INTERCONNECTION PROCESSING METHOD AND DEVICE FOR ELECTRIAL APPARATUS, AND SYSTEM

METHOD AND DEVICE FOR PROCESSING VOLTAGE DROP, GRID INTERCONNECTION PROCESSING METHOD AND DEVICE FOR ELECTRIAL APPARATUS, AND SYSTEM

Disclosed are a method and device for processing a voltage drop, a grid interconnection method and device for processing an electrical apparatus, and a system. The method includes: acquiring a drop amplitude of a voltage for each phase in a three-phase alternating current (S204); and under a conditi...

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Bibliographische Detailangaben
Hauptverfasser: Ni, Weitao, Li, Jianhua, Zhang, Xuefen, Lou, Hewei, Wang, Jing, Jiang, Shiyong
Format: Patent
Sprache:eng
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
GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-REDRADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, E.G. USINGPHOTOVOLTAIC [PV] MODULES
SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:Disclosed are a method and device for processing a voltage drop, a grid interconnection method and device for processing an electrical apparatus, and a system. The method includes: acquiring a drop amplitude of a voltage for each phase in a three-phase alternating current (S204); and under a condition in which a voltage for any phase in the three-phase alternating current drops, performing reactive power compensation according to a drop amplitude of a voltage for a phase in which the voltage drops (S206). Therefore, the electrical apparatus has a low voltage ride-through function, thereby solving the technical problem of a large deviation of voltage drop amplitude determination arising from an asymmetrical drop of three phases.