Photovoltaic power generation system and assembly IV curve scanning method thereof

A technology of a photovoltaic power generation system and a scanning method, applied in the field of photovoltaic power generation, can solve the problems such as the inability to detect the IV curve of a single component

Active Publication Date: 2017-08-04
SUNGROW POWER SUPPLY CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0004] However, in the existing IV curve scanning scheme, as long as the inverter controls the bus voltage to realize the IV curve scanning of the entire

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  • Photovoltaic power generation system and assembly IV curve scanning method thereof
  • Photovoltaic power generation system and assembly IV curve scanning method thereof
  • Photovoltaic power generation system and assembly IV curve scanning method thereof

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Embodiment Construction

[0044] 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.

[0045] The invention provides a photovoltaic power generation system and its component IV curve scanning method, so as to provide a scheme capable of detecting and obtaining the IV curve of a single component.

[0046] The component IV curve scanning method of the photovoltaic power generation system is applied to the inverter and each detection device in the photovoltaic power generation system. The input end of each detection device is connected to at least one component, and the output en...

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Abstract

The present invention provides a photovoltaic power generation system and an assembly IV curve scanning method thereof. According to the photovoltaic power generation system and the assembly IV curve scanning method thereof of the invention, assembly-level detection devices are additionally adopted; when an inverter adjusts the output voltage of at least one detection device string and performs IV curve scanning on the corresponding detection device strings, corresponding detection devices continuously record the scanning data of assemblies connected with the detection devices; after completing recording the scanning data, the detection devices upload the recorded scanning data to a host computer; and therefore, the scanning data of individual assemblies can be obtained.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation system and an IV curve scanning method of components thereof. Background technique [0002] In a photovoltaic power generation system, since its components are installed and worked in a complex outdoor environment, and are affected by various environmental factors such as thermal cycles, high humidity, and ultraviolet rays, various problems such as component aging and performance degradation are prone to occur. [0003] The detection and diagnosis of module IV curves can prolong the service life of photovoltaic systems, improve power generation efficiency, and reduce operation and maintenance costs. With the rapid growth of global photovoltaic power generation installed capacity, the safety and reliability requirements of photovoltaic power generation systems are constantly increasing. Therefore, module IV curve scanning techn...

Claims

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Application Information

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IPC IPC(8): H02S50/10G01R31/26
CPCG01R31/2642H02S50/10Y02E10/50
Inventor 邹云飞俞雁飞杨宗军詹亮
Owner SUNGROW POWER SUPPLY CO LTD
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