Fault detection method and device and photovoltaic power generation system

Abstract

The invention provides a fault detection method, a fault detection device and a photovoltaic power generation system, which are used for improving the fault detection efficiency of photovoltaic modules and reducing the detection cost. The method comprises the steps that a power station management system controls a to-be-detected photovoltaic module to be in a target state through an inverter connected with the to-be-detected photovoltaic module according to a preset photovoltaic module sequence, and controlling a mobile image collection terminal to collect image data of the to-be-detected photovoltaic module when the to-be-detected photovoltaic module is determined to be in the target state; the image data is used for detecting the fault state of the to-be-detected photovoltaic module; when the power station management system determines that the mobile image collection terminal acquires the image data of the to-be-detected photovoltaic module this time, the power station management system continues to control a to-be-detected photovoltaic module next time to be in a target state through the inverter connected with the to-be-detected photovoltaic module next time according to the preset photovoltaic module sequence until the image data of all the to-be-detected photovoltaic modules is collected.

Description

technical field [0001] The present application relates to the technical field of photovoltaic power generation, and in particular to a fault detection method, device and photovoltaic power generation system. Background technique [0002] With the large-scale application of photovoltaic technology, the application scenarios are becoming increasingly diversified. Since most photovoltaic power generation systems are located in remote areas, and photovoltaic modules in photovoltaic power generation systems are scattered and installed, intelligent operation and maintenance has become an inevitable trend in the development of photovoltaic power plants. [0003] During the operation of the photovoltaic power generation system, it is necessary to perform fault detection on the running photovoltaic modules to ensure the operation safety of the photovoltaic power generation system and the power generation of the photovoltaic power generation system. At present, electroluminescent (EL)...

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Problems solved by technology

[0004] In actual use, the EL detection method is mainly through manual detection, which requires inspectors to manually adjust the working status of photovoltaic modules and collect image data of photovoltaic modules. Due to the scattered installation of photovoltaic modules in photovoltaic power stations, detection is difficult and the detection efficiency is low.

[0005] Therefore, the existing fault detection methods of photovoltaic modules still need to be further studied

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