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EDformer family: End-to-end multi-task load forecasting frameworks for day-ahead economic dispatch

Author

Listed:
  • Tian, Zhirui
  • Liu, Weican
  • Zhang, Jiahao
  • Sun, Wenpu
  • Wu, Chenye

Abstract

The highly penetrated renewable energy resources have significantly increased the uncertainty faced by the power system. Accurate day-ahead economic dispatch (ED) is crucial for managing this uncertainty and ensuring the efficient use of energy resources. To guarantee the planned dispatch schedules align closely with actual operations, most existing methods focus on improving the accuracy of time-series load forecasting. However, minimizing the commonly adopted forecasting accuracy metrics, e.g., the mean squared error (MSE), cannot directly correspond to the fidelity of day-ahead ED. This misalignment for load forecasting limits the practical effectiveness of the existing methods. To this end, based on the multi-task learning technique and end-to-end learning framework, we propose the EDformer family which contains two learning frameworks, EDformer and EEDformer. Specifically, the proposed frameworks parallel multiple load forecasting tasks based on customized encoder–decoder structures and address the inconsistency between the forecasting accuracy metrics and actual ED costs through a customized loss function. Furthermore, the proposed frameworks adopt the Learning to Optimize (L2O) technique, utilizing fully connected neural networks based on data transposition strategies to learn the mapping relationships, replacing conventional solvers and thereby accelerating the training process. EDformer, through independent parameter training, achieves high forecasting accuracy while requiring high computational resources. EEDformer, on the other hand, adopts parameter-sharing techniques, slightly sacrificing forecasting accuracy to significantly improve computational efficiency, making the proposed EDformer family adaptable to different practical requirements. Validation using real data from Australia on the IEEE 9-Bus and 39-Bus systems proves the superiority of the EDformer family in enhancing day-ahead dispatch effectiveness.

Suggested Citation

  • Tian, Zhirui & Liu, Weican & Zhang, Jiahao & Sun, Wenpu & Wu, Chenye, 2025. "EDformer family: End-to-end multi-task load forecasting frameworks for day-ahead economic dispatch," Applied Energy, Elsevier, vol. 383(C).
    • Handle: RePEc:eee:appene:v:383:y:2025:i:c:s0306261925000492
    DOI: 10.1016/j.apenergy.2025.125319
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