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

A photovoltaic module and fault diagnosis technology, applied in the monitoring of photovoltaic power generation, photovoltaic modules, photovoltaic systems, etc., can solve the problems of high dependence on reference devices and environmental monitoring devices, high cost, and the need for regular maintenance of reference components.

Active Publication Date: 2019-06-07
SUNGROW POWER SUPPLY CO LTD
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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

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

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Embodiment Construction

[0073] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0074] The invention provides a fault diagnosis method for photovoltaic components to solve the problems of high cost and regular maintenance of reference components caused by high dependence on reference devices and environmental monitoring devices in the prior art.

[0075] The photovoltaic power generation system applied by the photovoltaic module fault diagnosis method is as follows: figure 1 As shown, the photovoltaic power generation system includes: a component-level power electronic...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S50/10
CPCH02S50/10Y02E10/50H02S40/32H02S50/00
Inventor 赵天云平翁捷
Owner SUNGROW POWER SUPPLY CO LTD
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