arXiv:2512.23898cs.LGcs.AI2025-12

对比10种深度模型,发现Transformer在光伏预测中精度最高。

Efficient Deep Learning for Short-Term Solar Irradiance Time Series Forecasting: A Benchmark Study in Ho Chi Minh City

  • 用十种深度模型对比预测光照强度,选了最有效的Transformer。
  • Transformer准确率最高,R²达0.9696,误差MAE为23.78 W/m²。
  • 知识蒸馏让大模型变小23.5%还更准,适合边缘设备部署。

可靠的全球水平辐照度(GHI)预测对缓解电网中太阳能波动至关重要。本研究在胡志明市对十种深度学习架构进行了短时(1小时前瞻)GHI时间序列预测的全面基准测试,利用2011-2020年高分辨率NSRDB卫星数据,对比了经典模型(如LSTM、TCN)与新兴前沿架构(包括Transformer、Informer、iTransformer、TSMixer和Mamba)。实验结果表明,Transformer表现最优,预测准确率最高,R²达0.9696。通过SHAP分析揭示,Transformer表现出强烈的“近期偏好”,聚焦于即时大气条件;而Mamba则显式利用24小时周期性依赖进行预测。此外,研究证明知识蒸馏可将高性能Transformer压缩23.5%,同时意外降低误差(MAE: 23.78 W/m²),为在资源受限的边缘设备上部署低延迟预测提供了可行路径。

原文摘要 · Abstract (English)

Reliable forecasting of Global Horizontal Irradiance (GHI) is essential for mitigating the variability of solar energy in power grids. This study presents a comprehensive benchmark of ten deep learning architectures for short-term (1-hour ahead) GHI time series forecasting in Ho Chi Minh City, leveraging high-resolution NSRDB satellite data (2011-2020) to compare established baselines (e.g. LSTM, TCN) against emerging state-of-the-art architectures, including Transformer, Informer, iTransformer, TSMixer, and Mamba. Experimental results identify the Transformer as the superior architecture, achieving the highest predictive accuracy with an R^2 of 0.9696. The study further utilizes SHAP analysis to contrast the temporal reasoning of these architectures, revealing that Transformers exhibit a strong "recency bias" focused on immediate atmospheric conditions, whereas Mamba explicitly leverages 24-hour periodic dependencies to inform predictions. Furthermore, we demonstrate that Knowledge Distillation can compress the high-performance Transformer by 23.5% while surprisingly reducing error (MAE: 23.78 W/m^2), offering a proven pathway for deploying sophisticated, low-latency forecasting on resource-constrained edge devices.

光伏预测深度学习时间序列边缘部署

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