Performance analysis system for grid-connected photovoltaic inverter

• Main Authors: GAO DELAN, LIU YAN, CAO SHANQIAO, SHI RUXIN, WANG JUAN, ZHANG SHUXIANG, WU LIDONG, TANG HONGFEN
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2022
• Subjects: 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; CALCULATING; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; COMPUTING; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; GENERATION; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to a grid-connected photovoltaic inverter performance analysis system. Comprising a grid-connected photovoltaic inverter conversion efficiency calculation module, a grid-connected photovoltaic inverter availability calculation module, a photovoltaic power station inverter output power dispersion rate calculation module, a photovoltaic inverter equivalent utilization hour calculation module, a photovoltaic inverter performance loss electric quantity calculation module and a photovoltaic inverter fault shutdown loss electric quantity calculation module. The system comprises a photovoltaic power station local irradiance evaluation module, a power station type division module, an inverter type division module, an analysis dimension determination module and a comparative analysis module. According to the invention, the inverter performance analysis indexes are abundant, and the performance condition of equipment can be known more clearly through mutual evidence and cooperative analysis; the p