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Fault diagnosis method and device for a photovoltaic module

A technology for fault diagnosis and photovoltaic modules, which is applied in the monitoring of photovoltaic systems, photovoltaic modules, photovoltaic power generation, etc., and can solve problems such as low reliability

Active Publication Date: 2020-05-22
SUNGROW POWER SUPPLY CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The invention provides a method and device for fault diagnosis of photovoltaic modules to solve the problem of low reliability in the prior art

Method used

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  • Fault diagnosis method and device for a photovoltaic module
  • Fault diagnosis method and device for a photovoltaic module
  • Fault diagnosis method and device for a photovoltaic module

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Embodiment Construction

[0060]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.

[0061] The invention provides a method for fault diagnosis of a photovoltaic component to solve the problem of low reliability in the prior art.

[0062] See figure 1 , the fault diagnosis method of the photovoltaic module specifically includes:

[0063] S101. Obtain IV curve scanning data of the photovoltaic module;

[0064] In practical applications, it is necessary to deduplicate and sort the data collected during the IV scan of photovoltaic modules in order to obtain IV curve scan data...

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Abstract

The invention provides a method and a device for fault diagnosis of a photovoltaic module. Firstly, the IV curve scanning data of the photovoltaic module is obtained. And then judging whether the IV curve scanning data meets the fault diagnosis condition; If the IV curve scanning data does not satisfy the fault diagnosis condition, re-acquiring the IV curve scanning data until the IV curve scanning data satisfies the fault diagnosis condition, that is, until the quality of the collected data passes the standard; at this time, that fault diagnosis result of the photovoltaic module is obtain according to the IV curve scan data and the preset diagnosis model. The invention avoids the problem that the quality of the collected data is poor due to the low irradiance and the diagnosis reliabilityis low in the prior art.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis of photovoltaic components, in particular to a method and device for fault diagnosis of photovoltaic components. Background technique [0002] With the vigorous development of photovoltaic power generation systems, the fault diagnosis of photovoltaic modules is becoming more and more important. Among the many fault diagnosis methods of photovoltaic modules, the intelligent detection method has attracted more and more attention and research because it does not depend on mathematical models and does not need to increase the cost of photovoltaic system equipment. [0003] The existing photovoltaic module fault diagnosis method based on intelligent detection first collects photovoltaic module data and performs data processing, then imports the obtained data into the corresponding fault diagnosis model, and then judges the fault type of the photovoltaic module through the decision-making module...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S50/15
CPCH02S50/15Y02E10/50
Inventor 王平玉云平翁捷
Owner SUNGROW POWER SUPPLY CO LTD
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