Informer-PINN ultra-short-term multi-step load forecasting framework for hydrogen powered ships based on constructing a mixed constraint loss function
Liu Xingdou1, Zou Liang1, Han Zhiyun1, Ma Liangwang1, Wang Rui2
1. School of Electrical Engineering Shandong University Jinan 250061 China;
2. School of Information Science and Engineering Northeastern University Shenyang 110819 China
With the promotion and application of hydrogen energy in the shipbuilding industry, the energy management of hydrogen-powered ships demands high precision and timeliness in ultra-short-term multi-step load forecasting. However, load forecasting models for onshore power systems are difficult to directly adapt to ship scenarios. Ship loads are influenced by a couplingof factors such as navigation conditions and hydro-meteorology, exhibiting strong nonlinearity and dynamic fluctuations. Existing methods often neglect the integration of physical constraints anddata dynamics, resulting in insufficient forecasting accuracy and poor adaptability to varying conditions. This makes it difficult to support efficient energy scheduling for hydrogen-powered ships.
To address this issue, this paper proposes an Informer-PINN ultra-short-term multi-step load forecasting framework for hydrogen-powered ships, based on a constructed hybrid constraint loss function. The framework first selects multi-source variables strongly correlated with load through the Maximum Information Coefficient (MIC) to extract highly relevant features. Subsequently, it employs a non-uniform phase space reconstruction method to process ship operation and hydro-meteorological data, transforming them into feature forms suitable for model learning. Finally, itconstructs a hybrid loss function that integrates physical constraints of chaotic systems with data-driven methods. By combining the long-sequence prediction capability of Informer and the physical law embedding capability of Physical Information Neural Network (PINN), a closed-loop process of "multi-source variable selection - data reconstruction - hybrid constraint prediction" is formed.
Using the actual operating data of "Hydrogen Boat No.1" in the Three Gorges section of the Yangtze River as the validation sample (with a sampling interval of 1 minute, covering both stationary and non-stationary conditions), the proposed framework was compared with models such as ARIMA, XGBoost, GRU, and Transformer. The results showed that in the ultra-short-term predictions of 1/3/5/10 steps, the error metrics such as MAE and RMSE of the proposed framework were superior to those of the comparative models, and the accuracy decay rate under non-stationary conditions was lower. At the same time, the model training convergence speed was significantly accelerated, balancing prediction accuracy and computational efficiency, and verifying the advantage of integrating data-driven and physical constraints.
The Informer-PINN framework effectively addresses the core challenge of adapting onshore load forecasting models to ship scenarios, providing a high-precision basis for energy managementin hydrogen-powered ships. In the future, it can be further extended to complex sea conditions and other operational scenarios, deepening the coupling between the propulsion system and the ship's physical mechanisms, optimizing the weight configuration of the hybrid constraint loss function, enhancing the model generalization and robustness under extreme operating conditions, and facilitating the intelligent and efficient operation of hydrogen-powered ships.
刘星斗, 邹亮, 韩智云, 马良旺, 王睿. 基于构造混合约束损失函数的Informer- PINN氢动力船舶超短期多步负荷预测框架[J]. 电工技术学报, 0, (): 15-.
Liu Xingdou, Zou Liang, Han Zhiyun, Ma Liangwang, Wang Rui. Informer-PINN ultra-short-term multi-step load forecasting framework for hydrogen powered ships based on constructing a mixed constraint loss function. Transactions of China Electrotechnical Society, 0, (): 15-.
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