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Method for carrying out EL (Electroluminescence) real-time online atlas collection, analysis and diagnosis on photovoltaic cell module by applying unmanned aerial vehicle and backward filling technology of inverter

A technology of photovoltaic cells and drones, applied in photovoltaic power generation, photovoltaic modules, electrical components, etc., can solve the problems of heavy testing equipment and cumbersome operation steps

Inactive Publication Date: 2019-09-24
NAT ELECTRIC POWER INVESTMENT GRP YELLOW RIVER UPSTREAM HYDROPOWER DEV CO LTD +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The original testing equipment is heavy, and the operation steps are cumbersome. During the test, multiple wiring and equipment replacement are required.

Method used

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  • Method for carrying out EL (Electroluminescence) real-time online atlas collection, analysis and diagnosis on photovoltaic cell module by applying unmanned aerial vehicle and backward filling technology of inverter
  • Method for carrying out EL (Electroluminescence) real-time online atlas collection, analysis and diagnosis on photovoltaic cell module by applying unmanned aerial vehicle and backward filling technology of inverter

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Embodiment

[0023] like figure 1 and figure 2 As shown, the method for collecting and analyzing the EL spectrum of photovoltaic cell components by using unmanned aerial vehicle of the present invention comprises the following steps:

[0024] (1) Invert current to the photovoltaic cell module through the inverter with EL function that can reverse current to the photovoltaic cell module;

[0025] (2) Scanning and photographing the photovoltaic cell components of the reverse current through a UAV equipped with a positioning system equipped with a charge-coupled device camera and collecting EL maps;

[0026] (3) Complete the fault diagnosis of the photovoltaic cell module by analyzing the EL spectrum of the collected photovoltaic cell module;

[0027] (4) Quickly feedback maintenance information, confirm the stages where failures may occur, and take corresponding measures to avoid them from the stages of manufacturing, transportation, installation, and production operation and maintenance ...

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Abstract

The invention aims to provide a method for carrying out EL (Electroluminescence) real-time online atlas collection, analysis and diagnosis on a photovoltaic cell module by applying an unmanned aerial vehicle and a backward filling technology of an inverter. The EL detection method comprises the steps that the inverter automatically performs backward current filling (electric energy transmission) on the photovoltaic cell module at a constant value; the photovoltaic cell module emits light under the action of the electric energy; the unmanned aerial vehicle equipped with a positioning system carries a charge-coupled device camera to perform scanning and photographing on the photovoltaic cell module in the light emitting state; an EL atlas (image) of the photovoltaic cell module is collected; EL software performs EL image identification and analysis; and the EL software completes fault diagnosis and quickly feeds back maintenance information, thereby achieving the purpose of the invention. The EL detection method provided by the invention can significantly improve the detection efficiency of the photovoltaic cell module.

Description

technical field [0001] The present application relates to the field of new energy, in particular to a method for detecting EL (Electroluminescence) of photovoltaic cell components of a solar photovoltaic power station. Background technique [0002] In the prior art, due to different degrees of quality defects or damages caused by photovoltaic cell modules during manufacturing, transportation, installation, and production operation and maintenance management, the performance of photovoltaic cell modules is degraded or fails. [0003] Photovoltaic cell modules are the core part of solar photovoltaic power plants. The quality of photovoltaic cell modules can affect the power generation yield of the power station throughout the life of the power station. It is extremely necessary to test photovoltaic cell modules. [0004] At present, the commonly used photovoltaic cell module testing method is EL testing. The traditional EL testing can test one photovoltaic cell module each tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S50/15
CPCH02S50/15Y02E10/50
Inventor 谢小平庞秀岚祁斌崇锋马成邦
Owner NAT ELECTRIC POWER INVESTMENT GRP YELLOW RIVER UPSTREAM HYDROPOWER DEV CO LTD
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