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Automatic monitoring and fault elimination method of photovoltaic cell system

A photovoltaic power generation system and troubleshooting technology, applied in the monitoring of photovoltaic systems, photovoltaic power generation, photovoltaic modules, etc., can solve problems such as charging batteries, lowering the total output voltage, and photovoltaic power generation systems cannot work

Inactive Publication Date: 2017-11-21
孙睿超
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  • Application Information

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Problems solved by technology

However, in the process of actual use, when the power generation of the system fails, due to the professional limitations of users and technical support personnel in rural areas, they often cannot arrive at the scene in the first time, resulting in the situation that the photovoltaic power generation system cannot work and is idle.
However, in actual troubleshooting, system failures are often caused by damage to one or several photovoltaic cells
For example, in a battery array used in series, if one of the battery slices is damaged or related welding causes an open circuit, the entire series battery array cannot be used due to the system open circuit, or one of the battery slices has too much internal resistance due to its own reasons. The output voltage cannot charge the battery

Method used

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  • Automatic monitoring and fault elimination method of photovoltaic cell system
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  • Automatic monitoring and fault elimination method of photovoltaic cell system

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Embodiment Construction

[0022] The following will refer to the attached Figure 1-2 To describe the present invention in more detail, in the following description, descriptions of structures and techniques known to those skilled in the art are omitted. like figure 1 As shown in , the photovoltaic power generation array is composed of a plurality of photovoltaic battery groups 1 connected in series, and the photovoltaic battery group 1 can be a single cell 2 or a figure 2 The parallel structure of single photovoltaic cells 2 shown in . A switch S1, S2 is connected in series on the positive and negative leads of each battery pack 1; the positive and negative poles of each battery pack 1 are short-circuited through a series switch S3 and a sampling resistor R; the sampling resistor R is connected in parallel with a Switch S4: The sampling signal of the sampling resistor R is connected to an information collection module through a wire, and all the switches are connected to a switch control module. I...

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Abstract

The invention provides an automatic monitoring and fault elimination method of a photovoltaic cell system, which can be used for conveniently detecting a working condition of a battery piece and performing simple circuit conversion. A single battery piece which is circuit-shorted or is failure in the array can be automatically detected by a relative program and by arranging an external circuit in a photovoltaic battery piece array, so that the photovoltaic power generation system is prevented from not being used due to damage of a certain single battery piece in the photovoltaic battery piece array, and the photovoltaic power generation system still can be maintained running before concentrated maintenance in next time.

Description

technical field [0001] The invention relates to a design of a photovoltaic power generation component and a method for automatic detection and troubleshooting, in particular, a method for conveniently detecting the working state of a cell and performing simple circuit conversion. Background technique [0002] At present, independent photovoltaic power generation systems have been applied to a certain extent in vast rural areas and have broad development prospects. However, in the process of actual use, when the power generation of the system fails, due to the professional limitations of users and technical support personnel in rural areas, they often cannot arrive at the scene in the first time, resulting in the situation that the photovoltaic power generation system cannot work and is idle. However, in actual troubleshooting, system failures are often caused by damage to one or several photovoltaic cells. For example, in a battery array used in series, if one of the batt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S50/00H02S40/30
CPCH02S40/30H02S50/00Y02E10/50
Inventor 许亮梁兰菊张磊许太安
Owner 孙睿超
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