基于参数灵敏度的概率性光伏功率预测方法及系统

By combining physical models with data-driven models, a photovoltaic power prediction method has been developed, which solves the problems of systematic bias and uncertainty in photovoltaic power generation prediction, achieves high-precision probabilistic prediction, and improves the operational reliability of the power grid and the absorption capacity of photovoltaic power generation.

CN122026309BActive Publication Date: 2026-07-17DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER
Filing Date
2025-12-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing photovoltaic power prediction technologies suffer from systematic biases and uncertainties, making it impossible to accurately quantify the uncertainties in the prediction process. This leads to difficulties in grid dispatch and losses of curtailed solar power.

Method used

By constructing a probabilistic photovoltaic power prediction method based on parameter sensitivity, and combining a physical model with a data-driven model, error correction and uncertainty quantification are performed to generate rigorously calibrated probabilistic prediction information.

Benefits of technology

It has improved the accuracy and reliability of photovoltaic power generation forecasting, reduced grid security risks and curtailment energy losses, and enhanced the grid's ability to absorb renewable energy.

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Abstract

本发明公开了基于参数灵敏度的概率性光伏功率预测方法及系统,涉及可再生能源功率预测领域。首先构建包含入射角 / 光谱修正与热模型的一体化物理链,依据晴空指数划分天气型,通过一阶灵敏度传播获得功率预测方差的可计算下界,从而得到经偏差更正的基线确定性预测;随后引入状态感知的梯度提升树模型对不同天气型下的NWP误差与条件方差进行学习与校准,将条件协方差传递至功率侧,生成经校准的概率分布与预测区间。运行时,经偏差修正的高精度确定性预测与状态条件的方差估计结合,形成覆盖率与宽度匹配的可靠概率性结果;提高了确定性预测的准确性,提供了可解释、可校准的概率区间,增强了对云致爬坡 / 骤降等突变的跟踪能力。
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Citation Information

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