Photovoltaic array fault detection method and device, readable medium and electronic device

A photovoltaic array and fault detection technology, applied in the energy field, can solve problems such as high computational complexity and time-consuming training

Inactive Publication Date: 2019-11-15
XINAO SHUNENG TECH CO LTD
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Problems solved by technology

[0004] However, when using machine learning algorithms to determine the faulty strings in the photovoltaic array, the computational complexity is high, and it takes a lot of time to train the corresponding model, and this method is only applicable to specific photovoltaic arrays

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  • Photovoltaic array fault detection method and device, readable medium and electronic device

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Embodiment Construction

[0084] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0085] Such as figure 1 As mentioned above, the embodiment of the present invention provides a photovoltaic array fault detection method, including the following steps:

[0086] 101. Collect the current value of each string of the photovoltaic array;

[0087] 102. Determine the median value and the estimated value of the median absolute deviation of each of the current values, and deter...

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Abstract

The invention discloses a photovoltaic array fault detection method and device, a readable medium and an electronic device. The method comprises the steps that the current value of each string of a photovoltaic array is collected; the median of each current value and the absolute deviation estimate of the median are determined; upper limit current and lower limit current are determined according to the median and the absolute deviation estimate of the median; the dispersion rate is determined according to each current value; according to the upper limit current, the lower limit current and thedispersion rate, whether each current value is an abnormal value is determined; and when at least one abnormal value exists, the fact that the string corresponding to each abnormal value fails. According to the technical scheme of the invention, the faulty string in the photovoltaic array can be determined more simply and quickly.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a photovoltaic array fault detection method, device, readable medium and electronic equipment. Background technique [0002] Photovoltaic arrays include multiple strings, and each string is prone to various failures when exposed to complex outdoor environments for a long time. These failures will easily reduce the power generation efficiency of the photovoltaic array and may cause fires. The array performs fault detection to locate the faulty string, thereby improving the safety and service life of the components. [0003] At present, the faulty strings in the photovoltaic array are mainly determined by machine learning algorithms. [0004] However, when using machine learning algorithms to determine the faulty strings in the photovoltaic array, the computational complexity is high, and it takes a lot of time to train the corresponding model, and this method is only applicable t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S50/10
CPCH02S50/10Y02E10/50
Inventor 王小娜
Owner XINAO SHUNENG TECH CO LTD
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