Photovoltaic module fault diagnosis method, edge computing processing device and inverter

Abstract

The invention provides a photovoltaic module fault diagnosis method, an edge computing processing device and an inverter. Multiple component level power electronic equipment can be controlled to perform IV scanning on respective connected photovoltaic assemblies; the IV curves of corresponding photovoltaic assemblies can be extracted by each component level power electronic equipment; the IV curves meeting a condition can be selected as reference curves, and comparison can be further performed on the other IV curves except the reference curves and the reference curves, so that each comparisonresult can be generated; and fault diagnosis results of each photovoltaic assembly can be generated according to the comparison results. Thus, the dependence on the output of reference assemblies anddata of environmental monitoring equipment like irradiation instruments in the prior is not needed, and the problems of corresponding high costs and regular maintenance of the reference assemblies canbe avoided.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power plant fault diagnosis, and in particular to a photovoltaic module fault diagnosis method, an edge computing processing device and an inverter. Background technique [0002] As photovoltaic power generation technology moves from a period of rapid development to a mature period, its application scenarios and implementation methods vary widely, such as distributed photovoltaic systems with complex roof conditions and mountainous photovoltaic power stations with poor ground flatness. Troubleshooting components in the work creates difficulties. [0003] In order to solve this problem, in line with the development trend of "intelligence" and "refinement" in the photovoltaic industry, component-level power electronic equipment provides a hardware foundation for component-level monitoring and fault judgment in photovoltaic power generation systems. The IV scan data of the photovoltaic module p...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a photovoltaic module fault diagnosis method, an edge computing processing device and an inverter to solve the problems of high cost and regular maintenance of reference components caused by the high dependence on reference devices and environmental monitoring devices in the prior art

Images