A photovoltaic module power generation loss evaluation method, device, equipment and storage medium

By collecting and processing outdoor data in photovoltaic modules, performing steady-state screening and temperature compensation, and fitting the incident angle correction factor curve, the accuracy problem of incident angle correction factor testing in existing technologies is solved, and an accurate assessment of the impact on actual power generation is achieved.

CN122456468APending Publication Date: 2026-07-24CNNC OPTOELECTRONICS TECH (SHANGHAI) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CNNC OPTOELECTRONICS TECH (SHANGHAI) CO LTD
Filing Date
2026-04-29
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing technologies, the incident angle correction factor test method for photovoltaic modules cannot accurately reflect the outdoor solar spectrum, temperature, and operating status, resulting in an inability to accurately assess the impact on power generation.

Method used

By collecting the original output power, planar irradiance, and backsheet temperature of photovoltaic modules under outdoor operating conditions, steady-state screening and temperature compensation are performed, and an incident angle correction factor curve is fitted. Combined with real outdoor operating conditions, data processing is carried out to obtain the incident angle correction factor curve or parametric fitting function.

Benefits of technology

This approach achieves a direct reflection of the impact of the incident angle correction factor on actual power generation, improves the accuracy and reliability of the fitting results, and reduces the impact of temperature changes on the component output performance.

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Abstract

The application discloses a photovoltaic module power generation loss evaluation method, device, equipment and storage medium, comprising: collecting each original output power, each component plane irradiance, each component backboard temperature and each timestamp of the photovoltaic module under outdoor operation conditions; performing steady-state screening on each original output power according to each component plane irradiance, performing temperature compensation according to each component backboard temperature, performing normalization processing on each temperature-compensated output power to obtain each normalized output power; calculating each solar incident angle, selecting the solar incident angle in the reference incident angle interval, and calculating the reference normalized output power; fitting an incident angle correction factor curve or function according to the ratio of each normalized output power to the reference normalized output power, and performing power generation loss evaluation. The incident angle correction factor curve fitted by the application can truly reflect the angle response characteristics of the photovoltaic module in the actual outdoor environment, and intuitively reflect the influence degree of the incident angle correction factor on the actual power generation.
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