Photovoltaic combiner box fault diagnosis method and system

• Main Authors: WANG WEINENG, YANG FANGLIAO, ZHU SHI, HUANG XIN, YANG HONGMING, LIU XUAN, TIAN NAN, SUN YIZHEN, FANG BIN, AKIMASA
• Format: Patent
• Language: Chinese; English
• Published: 02.08.2024
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; CALCULATING; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; GENERATION; GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-REDRADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, E.G. USINGPHOTOVOLTAIC [PV] MODULES; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

The invention discloses a photovoltaic combiner box fault diagnosis method. The method comprises the following steps: acquiring parameter information of a photovoltaic combiner box of a target power system; establishing a photovoltaic combiner box database; collecting data information of the photovoltaic combiner box; performing preliminary judgment on the data information according to the service type of the photovoltaic combiner box, and completing the preliminary judgment of the abnormality of the photovoltaic combiner box; and carrying out multi-information fusion fault diagnosis on the photovoltaic combiner box according to the preliminary abnormal judgment result. The invention also discloses a system for realizing the photovoltaic combiner box fault diagnosis method. According to the method, the influence of environmental factors on the combiner box is fully considered, and the fault of the photovoltaic combiner box is diagnosed in combination with data information in multiple aspects; according to the