Photovoltaic array power attenuation prediction method and system

By using the ARIMA model to build a predicted power attenuation model, the problem of inaccurate power monitoring of photovoltaic arrays in the prior art is solved, more accurate power attenuation detection and optimized maintenance are achieved, and the efficiency and life of the photovoltaic system are improved.

CN119787964APending Publication Date: 2025-04-08YUNNAN ELECTRIC POWER TESTING & RES INST (GRP) CO LTD
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Patent Information

Application Number
CN202411837162.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-04-08

AI Technical Summary

Technical Problem

The existing photovoltaic array power attenuation detection methods lack accurate monitoring of full-cycle power, and cannot accurately evaluate the attenuation of photovoltaic arrays, which affects the optimization and maintenance of photovoltaic systems and the improvement of power generation efficiency.

Method used

ARIMA model is used to build a predicted power attenuation model, and pre-process the photovoltaic power generation historical data for pre-processing, calculate the theoretical output power, and use Python's Statsmodels library to fit the ARIMA model to perform power attenuation prediction.

Benefits of technology

It improves the accuracy of power attenuation detection of photovoltaic arrays, optimizes maintenance strategies, extends the service life of photovoltaic arrays, and improves energy output efficiency.

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Abstract

The present invention provides a photovoltaic array power attenuation prediction method and system. Firstly, data of the photovoltaic array is collected, and the state of the photovoltaic array is evaluated by comparing the calculated theoretical output power with the collected actual output power; a power attenuation prediction model is constructed by using an ARIMA model, and the output power of the photovoltaic array is predicted by fitting the ARIMA model; the output power of the photovoltaic array under different environmental conditions is monitored in real time, and the power attenuation of the photovoltaic array is accurately predicted and evaluated by combining a physical model with a data analysis method, so as to improve the accuracy of the photovoltaic array power attenuation detection, realize predictive maintenance, extend the service life of the photovoltaic array, and improve the energy output efficiency.
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Citation Information

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