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A Dual-Stage Solar Power Prediction Model That Reflects Uncertainties in Weather Forecasts

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  • Jeongin Lee

    (Energy ICT Research Section, Industrial Energy Convergence Research Division, Digital Convergence Laboratory, Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of Korea)

  • Jongwoo Choi

    (Energy ICT Research Section, Industrial Energy Convergence Research Division, Digital Convergence Laboratory, Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of Korea)

  • Wanki Park

    (Energy ICT Research Section, Industrial Energy Convergence Research Division, Digital Convergence Laboratory, Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of Korea)

  • Ilwoo Lee

    (Energy ICT Research Section, Industrial Energy Convergence Research Division, Digital Convergence Laboratory, Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of Korea)

Abstract

Renewable energy sources are being expanded globally in response to global warming. Solar power generation is closely related to solar radiation and typically experiences significant fluctuations in solar radiation hours during periods of high solar radiation, leading to substantial inaccuracies in power generation predictions. In this paper, we suggest a solar power generation prediction method aimed at minimizing prediction errors during solar time. The proposed method comprises two stages. The first stage is the construction of the Solar Base Model by extracting characteristics from input variables. In the second stage, the prediction error period is detected using the Solar Change Point, which measures the difference between the predicted output from the Solar Base Model and the actual power generation. Subsequently, the probability of a weather forecast state change within the error occurrence period is calculated, and this information is used to update the power generation forecast value. The performance evaluation was restricted to July and August. The average improvement rate in predicted power generation was 24.5%. Using the proposed model, updates to weather forecast status information were implemented, leading to enhanced accuracy in predicting solar power generation.

Suggested Citation

  • Jeongin Lee & Jongwoo Choi & Wanki Park & Ilwoo Lee, 2023. "A Dual-Stage Solar Power Prediction Model That Reflects Uncertainties in Weather Forecasts," Energies, MDPI, vol. 16(21), pages 1-19, October.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:21:p:7321-:d:1269651
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    References listed on IDEAS

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    3. Ju-Hee Kim & Sin-Young Kim & Seung-Hoon Yoo, 2020. "Public Acceptance of the “Renewable Energy 3020 Plan”: Evidence from a Contingent Valuation Study in South Korea," Sustainability, MDPI, vol. 12(8), pages 1-12, April.
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