arXiv:2510.15780stat.APcs.LG2025-10被引 1

用环境感知方法提升风电光伏预测的可靠性,无需重训练模型。

Enhanced Renewable Energy Forecasting using Context-Aware Conformal Prediction

  • 根据环境相似度加权历史数据,动态调整预测区间。
  • 在多个电网系统上验证,显著改善预测可靠性与效率平衡。
  • 适合无法重训练模型的实时预测场景,提升决策可信度。

人工智能正广泛用于可再生能源预测与电网调度。随着可再生能源渗透率上升,可靠的概率预测对管理不确定性、支持风险敏感型决策愈发重要。然而,现有预测常因时间变化、天气波动和运行模式差异而出现校准偏差。在许多实际场景中,预测由外部供应商或独立系统提供,受限于模型访问权限或计算资源,难以重新训练。因此亟需高效且不依赖具体模型的方法,在预测生成后提升其可靠性。本文提出环境感知的置信区间校准(CACP)框架,通过在校准过程中对与目标条件更相似的历史观测赋予更高权重,实现反映局部不确定性的自适应预测区间,无需访问或重训练原预测模型。实验基于美国国家可再生能源实验室(NREL)的大规模日前太阳能预测数据集,涵盖MISO、ERCTO、SPP等多个系统。结果表明,相比NREL基线模型及其它置信区间校准方法,CACP在站点级与系统级均显著提升了预测可靠性与效率的权衡表现。这表明CACP可作为可信AI驱动的可再生能源预测与调度决策支持的实用增强层。

原文摘要 · Abstract (English)

Artificial intelligence (AI) is increasingly used to support renewable energy forecasting and grid operations. As renewable penetration grows, reliable probabilistic forecasting is becoming essential for managing uncertainty and supporting risk-aware operational decision-making. However, these forecasts often suffer from miscalibration due to temporal variability, changing weather conditions, and heterogeneous operating regimes. In many real-world settings, renewable energy forecasts are provided by external sources, vendors, or independently trained systems, making retraining infeasible because of limited model access or computational constraints. This creates a need for efficient and model-agnostic methods that can improve forecast reliability after they are produced. This paper presents Context-Aware Conformal Prediction (CACP), a framework for calibrating renewable energy forecasts. The proposed method relies on a weighting mechanism during the calibration procedure which assigns higher weights to historical observations that are more similar to the target forecasting condition. This enables adaptive prediction intervals that reflect local uncertainty regimes without requiring access to, or retraining of, the underlying forecasting model. Experiments are performed on a large-scale dataset from National Renewable Energy Laboratory (NREL) day-ahead solar forecasting, covering multiple systems including MISO, ERCTO, and SPP. The results show that CACP improves the reliability-efficiency tradeoff at both site and system levels compared to NREL's base forecasting model and the other conformal prediction baselines. These results suggest that CACP can serve as a practical reliability-enhancement layer for trustworthy AI-enabled renewable energy forecasting and operational decision support.

能源预测置信校准可再生能源智能电网

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